DAILY OPERATIONS REPORT Date:

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1 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 01/26/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 1 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: 00 / 0 ft Rig: ft Progress: Rot Hrs Today: Avg ROP Today: H&P ft hr 0.0 ft/hr RIGGING DOWN ON BECK #13 PREPARING TO MOVE RIG IN RIG DOWN ON BECK #13 PRPEARING TO MOVE RIG IN MOVE RIG IN FROM BECK #13 11O MILE RIG MOVE CASING/WELL CONTROL PERSONNEL 120ft 345ft 01/16/2010 CHAD FRAZIER DANNY AUSTIN JOHN EGELSTON Geologist: Oxy Personnel: 0 Contractor Personnel: 0 Total on Site: 0 HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: MD Incl / Ref Datum: Ground Elev: AFE MD/Days: AFE Number: Lithology: Azi ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: $19,784 $19,784 $2,655,407 SPLIT REPORT HYDRAULICS Pump Rate: 0.0 gpm Pump Press: TVD SURVEY DATA (LAST 6) N/-S E/-W MUD GAS Avg Max Conn: Trip: Backgr: VS DLS Build BIT RECORD Bit No Size Manufacturer Model Serial No IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R Bit No Rot Hrs Cum Rot Hrs BIT OPERATING PARAMETERS TODAY Prog Cum Prog ROP Cum ROP WOB RPM min/max min/max TFA P Drop Bit Noz Vel HHPSI Engineer: Sample From: Mud Type: Time / MD: / Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: VG Meter: Comments: / / / / / / / / MUD DATA - MUD PRODUCTS MBT: ph: Pm / Pom: Pf / Mf: Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: / / / 0.0 / 0.0 / Product Units Qty Used $0 $0 LAST OR CURRENT BHA Component OD ID Jts Length DAILY COSTS (Top 15) Cost Description Vendor Amount Fuel & Lubricants THOMAS PETROLEUM $6,372 Direct Supervision OXY PERMIAN $3,725 Rig Move HELMERICH & PAYNE IDC $3,646 Rig Work HELMERICH & PAYNE IDC $3,646 Tax OXY PERMIAN $1,294 Rig Move HELMERICH & PAYNE IDC $257 Rental Surface Eqpmnt & Tools LIGHT TOWER RENTALS $220 Camp & Catering STALLION OILFIELD SERVICE $120 Rental Surface Eqpmnt & Tools STALLION OILFIELD SERVICE $119 Rental Surface Eqpmnt & Tools LIGHT TOWER RENTALS $100 Rental Surface Eqpmnt & Tools NEFF FORK LIFT $78 Camp & Catering STALLION OILFIELD SERVICE $60 Rental Surface Eqpmnt & Tools MD TOTCO $55 Camp & Catering STALLION OILFIELD SERVICE $38 Camp & Catering B & L SATELLITE RENTALS $30 3/25/2010 3:42:29PM Page 1 of 2

2 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 01/26/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 1 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS Operation Details 19:00 0: MIRU LOCMOV RD P RIGGING DOWN ON BECK #13 PREPARING TO MOVE RIG IN MILE RIG MOVE, DOCK TDS, PJSM, SLIP OFF DRILL LINE AND CUT 67', RIG DOWN WIND WALLS, LAY DOWN BOP STACK, BEGIN RIGGING DOWN BACK YARD 00:00 SAFETY BRAKE - RIGGING DOWN, HAND AND FINGER PLACEMENT, COMMUNICATION Total Time 5.00 Safety Incident? Environ Incident? Incident Comments: N N Days since Last RI: Days since Last LTA: Weather Comments: Other Remarks: FROM ODESSA GO WEST ON HWY MILES TO FM 181 TURN SOUTH ON 181 GO MILES TO CATTLE GUARD #11 TURN EAST ONTO LEASE ROAD, GO 1.2 MILES THEN SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 103 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY : CEMENTING, NIPPLE DOWN, RIGGING DOWN ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 609 DAYS SINCE LAST RECORDABLE: 163 TOTAL JSA REVIEWED: 16 TOTAL STOP CARDS: 40 TOTAL PRE-OP SAFETY MEETINGS: 7 TOTAL LO/TO: 1 TOTAL PERMITS TO WORK: 1 BEST STOP CARD OF THE DAY: OBSERVED AN EMPLOYEE USING A HAND GRINDER, HE WENT TO CHANGE THE DISC WITHOUT UNPLUGGING THE POWER CORD, STOPPED THE JOB AND ASKED HIM TO UNPLUG THE CORD WHEN CHANGING DISC, HE COMPLIED 3/25/2010 3:42:29PM Page 2 of 2

3 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 01/27/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 2 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: 00 / 0 ft Rig: ft Progress: ft Rot Hrs Today: Avg ROP Today: H&P ft hr 0.0 ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: Lithology: ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: $31,488 $51,272 $2,655,407 WAITING ON DAYLIGHT TO CONTINUE RIG UP ON DRONE BEE # % RIG AT NEW LOCATION, DERRICK ON LOCATION NEXT TO DRO MOVE FROM THE BECK #13, 110 MILE RIG MOVE, DERRICK DOWN AT 10:30 01/27/2010, TO THE DRONE BEE #1 AND RIG UP. 100% OF R FINISH RIGGING UP RIG ON DRONE BEE #1 AND PREPARE TO SPUD IN. CASING/WELL CONTROL PERSONNEL 120ft 345ft 01/16/2010 GILBERT ZAPATA DANNY AUSTIN JOHN EGELSTON Geologist: Oxy Personnel: 2 Contractor Personnel: 16 Total on Site: 18 HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: MD Incl / Azi HYDRAULICS Pump Rate: 0.0 gpm Pump Press: TVD SURVEY DATA (LAST 6) N/-S E/-W MUD GAS Avg Max Conn: Trip: Backgr: VS DLS Build BIT RECORD Bit No Size Manufacturer Model Serial No IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R Bit No Rot Hrs Cum Rot Hrs BIT OPERATING PARAMETERS TODAY Prog Cum Prog ROP Cum ROP WOB RPM min/max min/max TFA P Drop Bit Noz Vel HHPSI Engineer: Sample From: Mud Type: Time / MD: / Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: VG Meter: Comments: / / / / / / / / MUD DATA - MUD PRODUCTS MBT: ph: Pm / Pom: Pf / Mf: Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: / / / 0.0 / 0.0 / Product Units Qty Used $0 $0 LAST OR CURRENT BHA Component OD ID Jts Length DAILY COSTS (Top 15) Cost Description Vendor Amount Rig Work HELMERICH & PAYNE IDC $17,500 Direct Supervision OXY PERMIAN $3,725 Rig Move HELMERICH & PAYNE IDC $3,646 Rig Work HELMERICH & PAYNE IDC $3,156 Tax OXY PERMIAN $2,060 Miscellaneous Services B & L SATELLITE RENTALS $300 Rig Move HELMERICH & PAYNE IDC $257 Rental Surface Eqpmnt & Tools LIGHT TOWER RENTALS $220 Camp & Catering STALLION OILFIELD SERVICE $120 Rental Surface Eqpmnt & Tools STALLION OILFIELD SERVICE $119 Rental Surface Eqpmnt & Tools LIGHT TOWER RENTALS $100 Rental Surface Eqpmnt & Tools NEFF FORK LIFT $78 Camp & Catering STALLION OILFIELD SERVICE $60 Rental Surface Eqpmnt & Tools MD TOTCO $55 Camp & Catering STALLION OILFIELD SERVICE $38 3/25/2010 3:44:31PM Page 1 of 3

4 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 01/27/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 2 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS Operation Details 0:00 6: MIRU LOCMOV RD P CONTINUE RIGGING DOWN ON BECK #13 PREPARING TO MOVE RIG IN MILE RIG MOVE, DOCK TDS, PJSM, SLIP OFF DRILL LINE AND CUT 67', RIG DOWN WIND WALLS, LAY DOWN BOP STACK, BEGIN RIGGING DOWN BACK YARD, LAY DOWN DRILLERS CABIN, SCOPE IN MCC HOUSES SERVICE ARM AND TIE BACK ELECTRICAL LINES 00:00 SAFETY BRAKE - REVIEW JSA OVER LOWERING DRILLERS CABIN / COMMUNICATION 6:00 7: MIRU LOCMOV RD P CONTINUE RIGGING DOWN EQUIPMENT FOR TRUCK LOAD OUT. 7:00 7: MIRU SAFE PJSM P HELD SAFETY MEETING WITH BUTCH'S TRUCKING AND RIG CREWS. 7:30 11: MIRU LOCMOV RD P LOAD OUT BACK YARD, GAS BUSTER, CREW QUARTERS AND COMPANY MAN TRAILER. DERRICK DOWN AT 10:30 HOURS AND SUB DOWN AT 11:00 HOURS. MOVE TO NEW LOCATION 110 MILES. 08:00 SAFETY MEETING 15 MINS. = MAKING EYE CONTACT AND RAISING HAND WITH TRUCK DRIVER WHEN WALKING IN FRONT OF TRUCK. 11:00 15: MIRU LOCMOV MOVE P FIRST LOADS ARRIVED ON LOCATION AT 11:30 HOURS, MUD TANKS AND VFD HOUSE. START TO UNLOAD WITH CRANE. SPOT VFD HOUSE, MUD TANKS, GENERATOR PACKAGE AND DIESEL TANK. UNLOAD AND SPOT CHANGE HOUSE, CREW QUARTERS AND MUD MAN'S TRAILER. HOOK UP ALL POWER, WATER AND SEWAGE SYSTEM. 12:00 SAFETY MEETING 15 MINS. = USING TAGLINES WHEN HANDLING LOADS. 15:00 21: MIRU LOCMOV RU P SPOT BOTH MUD PUMPS AND HOOK UP TO MUD TANKS. PLUG ELECTRICAL CABLES TO SERVICE ARM & PITS. SET MCC HOUSE AND WATER TANK IN PLACE. SPOT SHAKER SKID AND GAS BUSTER. SPOT DRAWWORKS, SUBSTRUCTURE AND PIN TOGETHER. PLUG IN ELECTRICAL CABLES TO DRAWWORKS. SPOT THE MUD BOAT AND PIN TO THE DRAWWORKS. ALL LOADS OFF BECK # 13 AT 17:00 HOURS. NOTE: MOVED RIG UNDER 18 OVERHEAD POWER LINES, HAD TO SHUT POWER OFF TO 1 OF GAEA'S LINES, DUE TO NOT HAVING AT LEAST 6' CLEARANCE. THE LOWEST POWER LINE WAS 22' 4", THE TALLEST RIG LOAD WAS 16' 4", THE RIG HAD 23 LOADS THAT DID NOT HAVE 6' CLEARANCE, POWER WAS TURNED 08:00 AND TURNED BACK 16:00 OXY ELECTRCIANS ON SITE TO MONITOR LOADS GOING UNDER LINES. 16:00 SAFETY MEETING 15 MINS. =REFOCUS ON BEING ALERT AFTER DRIVING 110 MILES AND GOOD COMMUNICATION WITH BUTCH'S TRUCKING. 20:00 SAFETY MEETING - HAND AND FINGER PLACEMENT, 100% TIE OFF 21:00 0: MIRU LOCMOV RU P CONTINUE TO PLUG UP ALL ELECTRICAL EQUIPMENT, RIG UP SUCTION PITS, MUD PIT'S, RIG UP HANDRAILS, PICK UP AND CLEAN UP WORK AREA'S AND TOOL'S, RIG UP BACK YARD TO RESERVE PIT'S Total Time Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. N N Days since Last RI: Days since Last LTA: 00:00 SAFETY MEETING - ELECTRICAL EQUIPMENT, WEATHER - RAIN Weather Comments: 61 3/25/2010 3:44:31PM Page 2 of 3

5 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 01/27/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 2 Other Remarks: FROM ODESSA GO WEST ON HWY MILES TO FM 181 TURN NORTH ON 181 GO MILES TO CATTLE GUARD #11 TURN EAST ONTO LEASE ROAD, GO 1.2 MILES THEN SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 103 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY : RIG MOVE, PINCH POINTS, HIGHWAY SAFETY, 100% TIE OFF ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 610 DAYS SINCE LAST RECORDABLE: 164 TOTAL JSA REVIEWED: 20 TOTAL STOP CARDS: 40 TOTAL PRE-OP SAFETY MEETINGS: 7 TOTAL LO/TO: 0 TOTAL PERMITS TO WORK: 0 BEST STOP CARD OF THE DAY: OBSERVED THIRD PARTY ATTEMPT TO WALK BETWEEN LOADS TO MOVE ELECTRICAL CABLE, TO PREVENT PINCHING, STOPPED HIM AND EXPLAINED HOW WE COULD DO THE JOB AFTER THE LOAD WAS SET ON THE GROUND, HE AGREED, WE CONTINUED OUR WORK 3/25/2010 3:44:31PM Page 3 of 3

6 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 01/28/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 3 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: 00 / 0 ft Rig: ft Progress: ft Rot Hrs Today: Avg ROP Today: H&P ft hr 0.0 ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: Lithology: ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: $188,823 $240,095 $2,655,407 RIGGING UP ON DRONE BEE # 1. WORKING ON TOPDRIVE SHOP PIN ASSEMBLY WHILE CONTINUING RIG UP. 95% RIGGED UP. RIG UP ON DRONE BEE # 1, DERRICK IN AIR AT 14:30 HOUR, CONTINUE TO RIG UP. FINISH RIGGING UP, INSPECT AND ACCEPT RIG ON DAY RATE, PICK UP 17.5" SURFACE DRILL ASSEMBLY, DRILL SURFACE TO 350', RU CASING/WELL CONTROL PERSONNEL 120ft 345ft 01/16/2010 GILBERT ZAPATA MIKE SPRINGER JOHN EGELSTON Geologist: Oxy Personnel: 2 Contractor Personnel: 11 Total on Site: 13 HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: MD Incl / Azi HYDRAULICS Pump Rate: 0.0 gpm Pump Press: TVD SURVEY DATA (LAST 6) N/-S E/-W MUD GAS Avg Max Conn: Trip: Backgr: VS DLS Build BIT RECORD Bit No Size Manufacturer Model Serial No IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R Bit No Rot Hrs Cum Rot Hrs BIT OPERATING PARAMETERS TODAY Prog Cum Prog ROP Cum ROP WOB RPM min/max min/max TFA P Drop Bit Noz Vel HHPSI Engineer: Sample From: Mud Type: Time / MD: / Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: VG Meter: Comments: / / / / / / / / MUD DATA - MUD PRODUCTS MBT: ph: Pm / Pom: Pf / Mf: Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: / / / 0.0 / 0.0 / Product Units Qty Used $0 $0 LAST OR CURRENT BHA Component OD ID Jts Length DAILY COSTS (Top 15) Cost Description Vendor Amount Rig Move BUTCH'S RAT HOLE & ANCHO $97,500 Location & Roads + Maintenance FAS-LINE SALES & RENTALS, $30,000 Rig Move HELMERICH & PAYNE IDC $17,500 Tax OXY PERMIAN $12,353 Location & Roads + Maintenance FAS-LINE SALES & RENTALS, $7,390 Fuel & Lubricants THOMAS PETROLEUM $6,372 Direct Supervision OXY PERMIAN $3,725 Miscellaneous Services GLEN D. BIELSS CONSULTING $2,303 Elec., Water, Sewer, Trash B & L SATELLITE RENTALS $1,919 Miscellaneous Services STALLION OILFIELD SERVICE $1,600 Miscellaneous Services BUTCH'S RAT HOLE & ANCHO $1,500 Communications & IT STALLION OILFIELD SERVICE $1,080 Miscellaneous Services STEWART WELDING & MACHI $1,030 Drilling & Completion Fluids M-I $650 Elec., Water, Sewer, Trash STALLION OILFIELD SERVICE $600 3/25/2010 3:45:02PM Page 1 of 3

7 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 01/28/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 3 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS Operation Details 0:00 6: MIRU LOCMOV RU P CONTINUE TO PLUG UP ALL ELECTRICAL EQUIPMENT, RIG UP SUCTION PITS, MUD PIT'S, RIG UP HANDRAILS, PICK UP AND CLEAN UP WORK AREA'S AND TOOL'S, RIG UP BACK YARD TO RESERVE PIT'S PJSM, CHANGE LINERS IN #2 PUMP 04:00 SAFETY BREAK - CORRECT TOOLS FOR THE JOB, PINCH POINTS, LINE OF FIRE 6:00 7: MIRU LOCMOV RU P CONTINUE CHANGING OUT LINERS IN #2 PUMP. 7:00 7: MIRU SAFE PJSM P HOLD A PRE-JOB SAFETY MEETING WITH RIG CREWS, DSM AND BUTCH'S TRUCKING. 7:30 10: MIRU LOCMOV RU P SET CENTER PIECE IN SUBSTRUCTURE AND PIN TOGETHER. HOOK UP HYDRAULICS TO SUB. RAISE SUBSTRUCTURE AND PIN AT 09:00 HOURS. SPOT BOP HANDLER AND PIN TO SUBSTRUCTURE. SPOT AND PIN DRILLER'S CABIN. 08:00 SAFETY MEETING 15 MINS. = WEARING PROPER CLOTHING WHEN CHANGE IN COLD WEATHER. 10:00 14: MIRU LOCMOV RU P BACK DERRICK IN AND PIN DERRICK TOGETHER, LOAD ONTO MUDBOAT, RAISE DERRICK BOARD & DRESS UP. HOOK UP HYDRAULIC HOSES AND PIN CYLINDERS TO DERRICK. STRING UP BLOCKS. SPOT PARTSHOUSE AND JUNK BOX IN PLACE. SET V-DOOR AND PIPE WRANGLER IN PLACE. INSTALL FLOWLINE AND RAISE SHAKER SKID. INSTALL STAIRS TO RIG FLOOR AND TO TRIP TANKS. SPOT DRILLER'S CABIN AND PIN. NOTE: HELD A CRITICAL JSA FOR RAISING DERRICK. DERRICK IN 14:30 HRS. 12:00 SAFETY MEETING 15 MINS = REFOCUS ON GOOD COMMUNICATION WITH ALL PERSONNEL ON LOCATION WHILE RIGGING UP. 14:30 16: MIRU LOCMOV RU P HOOK UP HYDRAULIC HOSES AND INSTALL FRONT STAIRS. RAISED DRILLER'S CABIN AT 16:00 HOURS. SPOT AND PIN BOP TRANSPORT. RAISE GAS BUSTER. BUTCHS MOVE TRUCKS 15:00 HOUR. 16:00 18: MIRU LOCMOV RU P CONTINUE TO RIG UP ELECTRICAL CABLES ON RIG FLOOR. HOOK UP LIGHTS TO TOP HOUSE, DERRICK, RIG FLOOR AND SUB BASE. 16:00 SAFETY MEETING 15 MINS. = STAYING FOCUS ON GOING UP AND DOWN STAIRS WHILE RIGGING UP. USING PROPER LIFTING TECHNIQUE. CREW CHANGE. 18:00 22: MIRU LOCMOV RU P CONTINUE TO RIG UP HYDRAULIC LINES ON RIG FLOOR. SCOPE IN CYLINDERS ON FLOOR AND DERRICK. WORK ON RIG COMPUTER SYSTEM. PERFORM WICHITA AND REGENCY BRAKE INSPECTION WITH MECHANIC. INSTALL DRILL LINE ON DRUM, SECURE ON ANCHOR AND UNPIN TOPDRIVE. PERFORMED 2 POINT CALIBRATION. 20:00 HR SAFETY BREAK - RIGGING UP HOSES, ELECTRIC LINES, TRIP HAZARDS OF THESE LINES WHILE RIG UP. 22:00 0: MIRU LOCMOV RU P MOVE IN FRAC TANKS AND SET IN PLACE. START TO FILL UP MUD TANKS AND FRAC TANKS WITH FRESHWATER. H & P ELECTRICIANS TESTING EQUIPMENT. CONTINUE TO RIG UP. INSTALL FLOW LINE, CONDUCTOR. FINISH WORKING ON RIG COMPUTER. Total Time Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. N N Days since Last RI: Days since Last LTA: 00:00 HR SAFETY BREAK - ICE ON STEPS AND KEEPING SALT ON STEPS TO KEEP THAWED Weather Comments: /25/2010 3:45:02PM Page 2 of 3

8 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 01/28/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 3 Other Remarks: FROM ODESSA GO WEST ON HWY MILES TO FM 181 TURN NORTH ON 181 GO MILES TO CATTLE GUARD #11 TURN EAST ONTO LEASE ROAD (H&P 370 SIGN), GO 1.2 MILES THEN SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 103 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY : WATCHING PINCH POINTS, GOOD COMMUNICATION, STAYING FOCUSED WHILE WALKING ON ICED UP SURFACE LOCATION. ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 611 DAYS SINCE LAST RECORDABLE: 165 TOTAL JSA REVIEWED: 24 TOTAL STOP CARDS: 40 TOTAL PRE-OP SAFETY MEETINGS: 6 TOTAL LO/TO: 0 TOTAL PERMITS TO WORK: 0 BEST STOP CARD OF THE DAY: OBSERVED AN EMPLOYEE SWINGING A HAMMER TO REMOVE VALVE CAP WHILE ANOTHER EMPLOYEE WAS TO CLOSE, STOPPED THE JOB AND HAD EMPLOYEE MOVE TO A DISTANCE IN CASE HAMMER SLIPPED IN COLD WEATHER ENVIRONMENT. 3/25/2010 3:45:02PM Page 3 of 3

9 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 01/29/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 4 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: 00 / 0 ft Rig: ft Progress: ft Rot Hrs Today: Avg ROP Today: H&P ft 3.50 hr 64.3 ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: 0.31 $52,894 $292,989 $2,655,407 Lithology: INTERBEDDED REDBEDS & SANDS CEMENTING " CASING. FINISH RIG UP, RIG ACCEPTED 12:30 HR 1/29/2010, SPUD " 16:30 HR 1/29/2010, DRILL " SURFACE HOLE TO 345' (TD FINISH RUNNING " SURFACE CASING, CIRCULATE, CEMENT CASING, RIG UP WELL HEAD & TEST, RIG UP BOP, PICK UP DR CASING/WELL CONTROL PERSONNEL 345ft 3,850ft 01/16/2010 GILBERT ZAPATA MIKE SPRINGER JOHN EGELSTON Geologist: Oxy Personnel: 2 Contractor Personnel: 11 Total on Site: 13 HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: 82.0 / 75.0 kip 78.0 kip 2,500.0 ft-lbf 6,000.0 ft-lbf HYDRAULICS Pump Rate: gpm Pump Press: 2,80 SURVEY DATA (LAST 6) MUD GAS Avg Max Conn: Trip: Backgr: MD Incl Azi TVD N/-S E/-W VS DLS Build Bit No Size Manufacturer Model Serial No BIT RECORD IADC Code Nozzles MD In MD Out SMITH MSD55HC PJ x FC-A I-O-D-L B-G-O-R 0-I-NO-TD BIT OPERATING PARAMETERS TODAY Bit No Rot Hrs Cum Rot Hrs Prog Cum Prog ROP Cum ROP WOB min/max RPM min/max TFA P Drop Bit Noz Vel HHPSI / / , MUD DATA - M-I Engineer: Saad Maraqa MBT: 5.0 lbm/bbl Sample From: Out ph: 8.5 Mud Type: Time / MD: Fresh water 20:00 / Pm / Pom: Pf / Mf: 0.0 / 0.1 Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: 8.70 / / 1 1 / 2 / / / 0.0 / bbl 3.00 / Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: 4, / / 0 ppm 0.0 / 0.0 / VG Meter: 1@3 / 1@6 / 1@100 / 1@200 / 2@300 / 3@600 Comments: Drilled surface with fresh watre pumped hgh visc sweeps and added 2 sx of drilling paper every hour. MW visc. MUD PRODUCTS $1,487 $1,487 Product Units Qty Used DRILLING PAPER BG,40 LB 6.00 ENGINEERING SERVICE EACH 1.00 FEDERAL BENTONITE BG,100 LB MF-55 CAN,5 GA 3.00 LAST OR CURRENT BHA BHA No: 1 Bit No: 1 MD In: ft Purpose: DRILL 17 1/2" SURFACE HOLE MD Out: ft Component OD ID Jts Length TRI-CONE BIT BIT SUB CROSSOVER SHOCK SUB DRILL COLLAR CROSSOVER SPIRAL DRILL COLLAR CROSSOVER HWDP Total Length: ft Wt below Jars: 35.0 kip DAILY COSTS (Top 15) Cost Description Vendor Amount Drilling & Completion Fluids MUSSLEWHITE TRUCKING $12,634 Rig Work HELMERICH & PAYNE IDC $11,979 Rig Move HELMERICH & PAYNE IDC $9,115 Direct Supervision OXY PERMIAN $3,725 Tax OXY PERMIAN $3,460 Bits, Reamers, Scrapers, HOs SMITH INTERNATIONAL, INC. $2,500 Drilling & Completion Fluids MUSSLEWHITE TRUCKING $1,972 Rental Surface Eqpmnt & Tools MD TOTCO $1,540 Drilling & Completion Fluids M-I $1,487 Rental Surface Eqpmnt & Tools KELLY'S PIPE INSPECTION, IN $1,090 Rental Surface Eqpmnt & Tools M-I $830 Miscellaneous Services MONAHANS NIPPLE-UP SERV $738 Drilling & Completion Fluids MUSSLEWHITE TRUCKING $473 Rig Move HELMERICH & PAYNE IDC $257 Rental Surface Eqpmnt & Tools LIGHT TOWER RENTALS $220 3/25/2010 3:45:12PM Page 1 of 3

10 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 01/29/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 4 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS Operation Details 0:00 4: MIRU LOCMOV RU P CONTINUE TO RIG UP ON DRONE BEE # 1. CLEAN DRIFT " SURFACE CASING. RECIEVED 14 JTS, H40, 48 #/FT, STC CASING (603.91'). 04:00 HR SAFETY BREAK - WORKING OFF THE MAN LIFT. WEARING SAFETY HARNESS WHILE RUNNING LIFT. LIMITATIONS OF LIFT. MEET AND GREET PROCEDURES. 4:00 6: MIRU LOCMOV RU P RIG UP ON DRONE BEE #1. HAULING FRESH WATER TO RIG PITS. WORKING ON TOP DRIVE, INSTALL DRAIN AND FILL LINE ON CONDUCTOR AND CENTER. 6:00 10: MIRU LOCMOV RU P HOOK UP TRANSFER PUMP. HOOK UP FILL UP LINE AND INSTALL TURNBUCKLES TO 20" CONDUCTOR PIPE. MIX HIGH VIS SWEEP IN SLUG PIT. HOOK UP FLARE LINE. NOTIFY TRRC OF SPUD, SURFACE CASING & CEMENT JOB 01/29/10 09:00 - AMY PEREZ, JOB # 1026 PJSM W/ MONAHANS NIPPLE UP AND RIG CREW AND BEGIN STUMP TESETING BOPE NOTE: OFFLINE BOPE STUMP TEST AS FOLLOWS, 5 MINS/ LOW, 5 MIN/ HIGH ANNULAR TEST 250# LOW/ 3500# HIGH CHOKE MANIFOLD 250# LOW/ 5000# HIGH FLOOR VALVES 250# LOW/ 5000# HIGH RAMS 250# LOW/ 5000# HIGH 08:00 HOURS SAFETY MEETING 15 MINS = DISCUSS WATCHING OUT FOR THIRD PARTY PERSONEL. MAKING SURE THEY UNDERSTAND AND FOLLOW OUR POLICIES. 10:00 12: MIRU LOCMOV RU P PICK UP AND RIG UP FLOOR TOOLS. MAKE UP STAND PIPE UNIONS AND VIBRATING HOSES. RIG UP RAILS AND WINDWALLS AND HOOK UP MI SWACO CHOKE CONTROL PANEL ON RIG FLOOR. 12:00 HOURS SAFETY MEETING 15 MINS = GOOD COMMUNICATION WITH FORKLIFT OPERATOR WHEN LIFTING EQUIPMENT. 12:30 13: MIRU SAFE PJSM P CONDUCT A PRE-SPUD RIG INSPECTION AND HOLD A PRE-SPUD MEETING WITH RIG CREW. LAYOUT AND SET UP 17 1/2" BHA, MEASURE AND CALIPER. PICK UP MOUSEHOLE AND INSTALL. NOTE: ACCEPTED RIG ON DAYWORK AT 12:30 HOURS, :30 14: MIRU LOCMOV RU P PICK UP JOINT OF HWDP AND BREAK CIRCULATION. CHECK FOR LEAKS ON CONDUCTOR AND TEST LINES TO 2000 PSI. 14:30 16: MIRU TRIP BHA P PICK UP 17 1/2" SPUD-IN BHA AS FOLLOWS, TAG BOTTOM AT 120' 1 = BIT= 17 1/2" SMITH MILL TOOTH XR+ JETTED WITH 3/16 TFA= = BIT SUB 1 = CROSSOVER 1 = 8" SHOCK SUB 6 = 8" DC'S 1 = CROSSOVER 3-6 1/2" DC'S 1 = CROSSOVER 3 = 5" HWDP 16:00 HOURS SAFETY MEETING 15 MINS = DISCUSS PINCH POINTS AND HAND PLACEMENT WHEN HANDLING BHA. 16:30 18: SUDR DRILL ROTVER P SPUD 17½" SURFACE HOLE AT 16:30 HRS, 01/29/2010. DRILLED 17.5" SURFACE HOLE FROM 120' TO 207' (58 FPH AVG ROP ON BTM) USING 900GPM, 600 PSI ON BTM, 80 SRPM, WOB, 4/6K TORQUE. CIRCULATING OUTER RESERVE. DROPPING SOAP STICK EVERY CONNECTION. PUMPING 25 BBL HIGH VISCOUS SWEEP EVERY 100'. CREW CHANGE. 18:00 20: SUDR DRILL ROTVER P DRILLED 17.5" SURFACE HOLE FROM 207' TO 345' (138') (69 FPH AVG ROP ON BTM) USING 900GPM, 2270 PSI ON BTM, SRPM, WOB, 4/6K TORQUE. TD " SURFACE HOLE AT 345' MD, 20:00 HOUR, 1/29/2010. CIRCULATING OUTER RESERVE. DROPPING SOAP STICK EVERY CONNECTION. PUMPING 25 BBL HIGH VISCOUS SWEEP EVERY 100'. 3/25/2010 3:45:12PM Page 2 of 3

11 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 01/29/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 4 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 20:00 20: SUDR CIRC CNDHOL P PUMP 50 BBLS HIGH VIS SWEEP AND CIRCULATE ROUND. 20:30 22: SUDR TRIP DRILL P DROP TOTCO. PULL OUT OF HOLE TO RUN " SURFACE CASING. NO PROBLEMS PULLING OUT OF HOLE, HOLE TAKING PROPER FILL. LAY DOWN BIT, SHOCK SUB, BIT SUB AND XO SUB. RECOVER TOTCO. BIT # 1 GRADE: 2-2-FC-A-0-I-NO-TD. SURVEY - 340' 1.0 DEG 22:00 22: SUDR OTHR OTHER P CLEAR AND CLEAN RIG FLOOR OF SUBS AND TOOLS. 22:30 23: SURC SAFE PJSM P PJSM WITH CASING CREW AND RIG CREW ON RIGGING UP AND RUNNING " SURFACE CASING. 23:00 0: SURC CSG RUNCSG P RUN 13 3/8", 48#, H-40, STC CASING AS FOLLOWS, TORQUE CASING TO 3220 FT-LBS Total Time Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. Other Remarks: N N Days since Last RI: Days since Last LTA: 1 - WEATHERFORD SAW TOOTH PATTERN GUIDE SHOE MODEL # 105 FROM 345' TO ' (THREAD LOCKED) 1 - SHOE JOINTS 13 3/8", 48#, H-40, STC FROM ' TO ' (THREAD LOCKED) 1 - WEATHERFORD PDC DRILLABLE FLOAT COLLAR MODEL # 1490 FROM ' TO ' (THREAD LOCKED) 7 - JOINTS 13 3/8", 48#, H-40, STC CASING FROM ' TO SURFACE WITH A 2.2' STICK UP INSTALLED BOW SPRING CENTRALIZERS AND WEATHERFORD SERIES 4 BOW WELDED CENTRALIZERS AS FOLLOWS, 1 BOW SPRING ON COLLAR STOP 10' ABOVE SHOE, NEXT TWO COLLARS, 1 ON EVERY THIRD JOINT TO SURFACE (4 TOTAL) SAFETY 00:00 - RUNNING CASING Weather Comments: FROM ODESSA GO WEST ON HWY MILES TO FM 181 TURN NORTH ON 181 GO MILES TO CATTLE GUARD #11 TURN EAST ONTO LEASE ROAD (H&P 370 SIGN), GO 1.2 MILES THEN SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 103 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY : RUNNING AND CEMENTING " SURFACE CASING. ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 612 DAYS SINCE LAST RECORDABLE: 166 TOTAL JSA REVIEWED: 16 TOTAL STOP CARDS: 40 TOTAL PRE-OP SAFETY MEETINGS: 6 TOTAL LO/TO: 3 TOTAL PERMITS TO WORK: 0 BEST STOP CARD OF THE DAY: WHILE H&P ELECTRICIAN WAS TROUBLESHOOTING THE LINER FLUSH PUMP ON #2 MUD PUMP, ELECTRICIAN UNPLUGGED THE 20 PIN CONTROL PLUG FROM THE J-BOX AND BEGAN DISASSEMBLING THE PLUG TO INSPECT IT. RIG MANAGER NOTICED A SPARK FROM ONE OF THE PINS WHEN THE ELECTRICIAN WAS HANDLING THE PLUG. RIG MANAGER STOPPED THE JOB AND ASKED THE ELECTRICIAN IF ALL THE PROPER BREAKERS HAD BEEN LOCKED OUT. AFTER INVESTIGATING, RM FOUND THE HEATER, LIGHTS AND AGITATOR BREAKERS WERE STILL ON. CORRECTION WAS MADE TO LOCKOUT BREAKERS AND DOCUMENTED THE ISSUE. 3/25/2010 3:45:12PM Page 3 of 3

12 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 01/30/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 5 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: 00 / 0 ft Rig: ft Progress: ft Rot Hrs Today: Avg ROP Today: H&P ft hr 0.0 ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: Lithology: ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: 1.31 $155,147 $448,137 $2,655,407 DRILLING " INTERMEDIATE HOLE AT 1,020'. ROP AT 200' HOUR WITH CONNECTIONS AND SURVEYS. RUN " SURFACE CASING (SET AT 345'), CIRCULATE, CEMENTED CASING, RIG UP BOP, TEST BOP, PICK UP " DRILLING ASSE TEST CASING, CHOKE DRILL, DRILL SHOE JTS, DRILL " INTERMEDIATE HOLE SECTION TO 3,850' CASING/WELL CONTROL PERSONNEL 345ft 3,850ft 01/30/2010 GILBERT ZAPATA MIKE SPRINGER JOHN EGELSTON Geologist: Oxy Personnel: 2 Contractor Personnel: 11 Total on Site: 13 Bit No Size Manufacturer HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model / HYDRAULICS Pump Rate: gpm Pump Press: 1,10 SURVEY DATA (LAST 6) MUD GAS Avg Max Conn: Trip: Backgr: MD Incl Azi TVD N/-S E/-W VS DLS Build Serial No BIT RECORD IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R SMITH Mi616 JY3429 M223 3x13, 3x , FC-A D-I-NO-TD SMITH MSD55HC PJ x FC-A 0-I-NO-TD Bit No Rot Hrs Cum Rot Hrs BIT OPERATING PARAMETERS TODAY Prog Cum Prog ROP Cum ROP WOB RPM min/max min/max TFA P Drop Bit Noz Vel HHPSI MUD DATA - M-I Engineer: Saad Maraqa MBT: 0.0 lbm/bbl Sample From: In ph: 8.0 Mud Type: Time / MD: Fresh water 22:00 / Pm / Pom: Pf / Mf: 0.0 / 0.1 Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: 1 / / 1 1 / 2 / / / 0.0 / bbl 1.10 / Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: 174,000 3,200 / 0 / 0 0 ppm 0 ppm 0.0 / 0.0 / VG Meter: 1@3 / 1@6 / 1@100 / 1@200 / 2@300 / 3@600 Comments: Cleaned pits and filled with 10ppg brine. Plane to circulate over shakers after drilling plug and then switch to inner reserve. MUD PRODUCTS $548 $2,034 Product Units Qty Used ENGINEERING SERVICE EACH 1.00 LAST OR CURRENT BHA BHA No: 2 Bit No: 2 MD In: ft Purpose: DRILL " INTERMEDIATE HOLE MD Out: 3,865.0 ft Component OD ID Jts Length PDC BIT POSITIVE DISPLACEMENT MOTOR FLOAT SUB SHOCK SUB POINT REAMER UBHO SUB NON-MAG DRILL COLLAR CROSSOVER POINT REAMER DRILL COLLAR CROSSOVER DRILL COLLAR CROSSOVER HWDP Total Length: 1, ft Wt below Jars: 54.0 kip DAILY COSTS (Top 15) Cost Description Vendor Amount Wellhead & Xmas Tree FMC TECHNOLOGIES $30,950 Rig Work HELMERICH & PAYNE IDC $25,000 Fuel & Lubricants THOMAS PETROLEUM $15,540 Cementing HALLIBURTON ENERGY SERV $14,596 Casing & Accessories SOONER PIPE $11,862 Tax OXY PERMIAN $10,150 Directional Drilling & LWD PATHFINDER ENERGY $9,300 Miscellaneous Services B & L CASING $8,442 Rig Work HELMERICH & PAYNE IDC $8,252 Bits, Reamers, Scrapers, HOs SMITH INTERNATIONAL, INC. $6,500 Direct Supervision OXY PERMIAN $3,725 Miscellaneous Services MONAHANS NIPPLE-UP SERV $2,231 Rental Surface Eqpmnt & Tools FMC TECHNOLOGIES $1,895 Casing & Accessories WEATHERFORD INTERNATION $1,542 Miscellaneous Services FMC TECHNOLOGIES $1,269 3/25/2010 3:45:22PM Page 1 of 3

13 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 01/30/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 5 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS Operation Details 0:00 1: SURC CSG RUNCSG P RUN 13 3/8", 48#, H-40, STC CASING AS FOLLOWS, TORQUE CASING TO 3220 FT-LBS 1 - WEATHERFORD SAW TOOTH PATTERN GUIDE SHOE MODEL # 105 FROM 345' TO ' (THREAD LOCKED) 1 - SHOE JOINTS 13 3/8", 48#, H-40, STC FROM ' TO ' (THREAD LOCKED) 1 - WEATHERFORD PDC DRILLABLE FLOAT COLLAR MODEL # 1490 FROM ' TO ' (THREAD LOCKED) 7 - JOINTS 13 3/8", 48#, H-40, STC CASING FROM ' TO SURFACE WITH A 2.2' STICK UP INSTALLED BOW SPRING CENTRALIZERS AND WEATHERFORD SERIES 4 BOW WELDED CENTRALIZERS AS FOLLOWS, 1 BOW SPRING ON COLLAR STOP 10' ABOVE SHOE, NEXT TWO COLLARS, 1 ON EVERY THIRD JOINT TO SURFACE (4 TOTAL) NO MUD LOSSES WHILE RUNNING CASING. TAG AT 337'. 1:30 2: SURC CIRC CNDHOL P INSTALL CIRCULATING SWEDGE AND WASH CASING DOWN FROM 337' TO 345' (8' FILL). 2:00 2: SURC CIRC CNDHOL P CIRCULATE AT 450 GPM (10.7 BBL/MIN) 220 PSI 2 1/2 CASING VOL, 2 ANNULAR VOL. PJSM WITH HALLIBURTON ON CEMENTING CASING WHILE CIRCULATING, AT WHICH TIME FOUND THAT THE CEMENT PLUG WAS WOOD. THIS PLUG WILL NOT TAKE THE 500 PSI OVER PUMPING PRESSURE WHEN BUMPING FLOAT COLLAR. 2:30 5: SURC CIRC CNDHOL PT RIG UP HALLIBURTON CEMENT HEAD AND CONTINUE TO CIRCULATE WHILE REGULAR RUBBER PLUG COME FROM ODESSA HALLIBURTON YARD. PLUG ON LOCATION AT 04:45 HOUR, LOAD PLUG IN HEAD. 5:00 6: SURC CMT PRIM P CEMENT " CASING AS FOLLOWS WITH HALLIBURTON: PUMP 20 BBLS FRESH WATER AHEAD. 400 SACKS HALLIBURTON PREMIUM PLUS (14.8 PPG, 1.35 YIELD 6.35 GAL/SK) 2% CALCIUM CHLORIDE AND 1 LBM/SK PHENO SEAL, AT 8 BPM WITH 260 PSI, DROP TOP WIPER PLUG, WASHED UP ON TOP OF PLUG. DISPLACE CEMENT 48.7 BBLS 10.0 PPG BRINE WATER AT 6 BPM WITH 150 PSI FINAL DISPLACEMENT PRESSURE. BUMPED PLUG WITH 650 PSI. HELD PRESSURE 5 MINUTES. BLED OFF 1.0 BBLS, FLOAT EQUIPMENT HOLDING. CIRCULATE 20 BBL (83 SACKS) CEMENT TO SURFACE. PLUG DOWN AT 05:45 HRS, ON 01/30/ :00 7: SURC CMT RIGUP P FLUSH OUT CONDUCTOR AND FLOW LINE WITH FRESH WATER. RIG DOWN CEMENTING EQUIPMENT. 7:00 9: SURC WLHD RWH P RIG DOWN FLOWLINE, REMOVE TURNBUCKLES, CUT OFF CONDUCTOR, " CASING AND ROUGH CUT CASING. 08:00 SAFETY MEETING 15 MINS: REVIEW JSA'S WITH ALL THIRD PARTY ON LOCATION, NIPPLING UP BOPE, AND REMINDING EVERYONE THAT ANYONE CAN STOP THE JOB FOR UNSAFE CONDITIONS. 9:30 11: SURC WLHD RWH P INSTALL AND WELD FMC UH-WB1 ( SECTION A 13 5/8" 3K - FLANGE TOP x 13 3/8" SOW AND SECTION B /8" 3K FLANGE BOTTOM AND 13 5/8" 5K FLANGE TOP ) UNIHEAD ASSEMBLY AND TEST SAME TO 540 PSI FOR 20 MIN. WITH NITROGEN - GOOD TEST. NOTE: REVIEW JSA ON NITROGEN GAS TESTING. CLEAN MUD PITS AND FILL WITH 10.0 PPG BRINE WATER 11:00 14: SURC BOP RUBOP P PRE-JOB SAFATY MEETING WITH MONAHANS NIPPLE UP CREW. INSTALL CROSS OVER SPOOL 13-5/8" x 5M TO 13-5/8" 10M; NIPPLE UP 13-5/8" 10M CAMERON BOP'S. DRESS OUT HYDRAULIC LINES, TURN BUCKLES, FLOWLINE AND FUNCTION TEST. 00:00 SAFETY MEETING 15 MINS = REVIEW JSA ON NIPPLE UP AND PINCH POINTS. 14:30 15: SURC BOP RUBOP P CHANGE OUT BAILS AND ELEVATORS. 3/25/2010 3:45:22PM Page 2 of 3

14 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 01/30/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 5 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 15:30 17: SURC BOP TSTBOP P CONDUCT PRE-JOB SAFETY MEETING, INSTALL TEST PLUG CLOSE UPPER PIPE RAMS, PERFORM SHELL TEST ON BOPE TEST 250# LOW 1211# HIGH FOR 10 MINUTES EACH. #1 VALVE ON CHOKE MANIFOLD, TOP DRIVE MANUEL AND HYDRAULIC, STAND PIPE VALVE, BOTH 4" MUD PUMP VALVES KELLY HOSE AND VIBRATOR LINES BACK TO MUD PUMPS, KILL LINE, CROSSOVER SPOOL AND WELL HEAD. 16:00 SAFETY MEETING 15 MINS. = BOPE TEST 17:00 17: SURC BOP CHRAMS P INSTALL WEAR BUSHING AND RUN IN LOCK PINS. 17:30 19: SURC OTHR OTHER P STRAP DRILLING BHA AND INSTALL TRIP NIPPLE IN ROTATING HEAD. 19:00 23: SURC TRIP PULD P STRAP AND PICK UP 12 1/4" INTERMEDIATE BHA AS FOLLOWS : 1 - BIT=SMITH MSI616 PX JETTED W/ 3/13'S AND 3/14'S TFA= MUD MOTOR= PATHFINDER 9 5/8" G1 5/6 4.0, 1.15 DEGREE ADJ, REV/GAL, BIT TO BEND 11.53'. 1 - FLOAT SUB 1 - SHOCK SUB 1-3 POINT ROLLER REAMER = 12 1/4"= 1/8" UNDERGAUGE 1 - UBHO 1 - PATHFINDER MONEL DC 1 - CROSSOVER 1-3 POINT ROLLER REAMER = 12 1/4"=1/8" UNDERGUAGE 6-8" DC 1 - CROSSOVER 6-6 1/2" SPIRAL DC 1 -CROSSOVER 6-5" HWDP 1 - DRILLING JARS ( TO BE RUN IN TENSION ) 11-5" HWDP SCRIB MOTOR TO UBHO (WITNESSED BY DSM) INSTALL MWD TOOL, TEST MWD, OK. BHA WEIGHTS: 8" DC = 37k 20:00 HOUR SAFETY BREAK - PICKING UP DIRECTIONAL TOOLS FOR " HOLE. 23:00 0: SURC TRIP BHA P TRIP IN HOLE AND TAG AT 290' (FLOAT COLLAR AT 301') Total Time Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. Other Remarks: N N Days since Last RI: Days since Last LTA: 00:00 HOUR SAFETY BREAK - CASING TESTING PROCEDURES AND PERFORMING CHOKE DRILL Weather Comments: FROM ODESSA GO WEST ON HWY MILES TO FM 181 TURN NORTH ON 181 GO MILES TO CATTLE GUARD #11 TURN EAST ONTO LEASE ROAD (H&P 370 SIGN), GO 1.2 MILES THEN SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 103 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY : WATCHING PINCH POINTS WHEN PICKING UP DIRECTIONAL BHA. ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 613 DAYS SINCE LAST RECORDABLE: 167 TOTAL JSA REVIEWED: 16 TOTAL STOP CARDS: 40 TOTAL PRE-OP SAFETY MEETINGS: 8 TOTAL LO/TO: 0 TOTAL PERMITS TO WORK: 0 BEST STOP CARD OF THE DAY: H&P EMPLOYEE LEFT MOUSEHOLE COVER OFF WHILE WORKING ON FLOOR. EMPLOYEE WAS STOPPED AND HAD COVER INSTALLED BEFORE SOME ONE STEPPED OFF IN HOLE. 3/25/2010 3:45:22PM Page 3 of 3

15 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 01/31/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 6 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: Engineer: 00 / 0 ft Rig: 2,775.0 ft Progress: ft Rot Hrs Today: Avg ROP Today: YATES@2,750.0 H&P 370 2,430.0 ft hr ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: Lithology: ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: 2.31 $52,000 $500,137 $2,655,407 DRILLING " INTERMEDIATE HOLE AT 3,130' (50-90 FPH). TEST CASING 1211 PSI AND PERFORM CHOKE DRILL, DRILL SHOE TRACK FROM 290' TO 345', DRILL " INTERMEDIATE HOLE FROM DRILL " INTERMEDIATE HOLE TO 3,865' TD, CIRCULATE, PULL OUT OF HOLE, PJSM, RIG UP AND RUN 9.625" CASING. CASING/WELL CONTROL PERSONNEL 3,855ft GILBERT ZAPATA MIKE SPRINGER JOHN EGELSTON 10,000ft 01/30/2010 Geologist: Oxy Personnel: 2 Contractor Personnel: 11 Total on Site: 13 Bit No Size Manufacturer HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model / kip kip 7,000.0 ft-lbf 11,000.0 ft-lbf HYDRAULICS Pump Rate: gpm Pump Press: 3,20 SURVEY DATA (LAST 6) MUD GAS Avg Max Conn: Trip: Backgr: MD Incl Azi TVD N/-S E/-W VS DLS Build 2, , , , , , , , , , , , Serial No BIT RECORD IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R SMITH Mi616 JY3429 M223 3x13, 3x , FC-A D-I-NO-TD BIT OPERATING PARAMETERS TODAY Bit No Rot Hrs Cum Rot Hrs Prog Cum Prog ROP Cum ROP WOB min/max RPM min/max TFA P Drop Bit Noz Vel HHPSI , , / / , MUD DATA - M-I Engineer: Saad Maraqa MBT: Sample From: Out ph: Mud Type: Time / MD: Brine 22:00 / 2,510.0 Pm / Pom: Pf / Mf: Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: / / 1 1 / 2 / /.0 1 / 0.0 / bbl 4.20 / Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: 0 ppm 0.0 / 0.0 / VG Meter: 1@3 / 1@6 / 1@100 / 1@200 / 2@300 / 3@600 Comments: Drilling ahead adding Soda Ash for ph and MF-55 to decrease solids. MW 10.3ppg and 28visc. MUD PRODUCTS 5.0 lbm/bbl / ,000 0 / / 0 5 ppm $3,498 $5,533 Product Units Qty Used ENGINEERING SERVICE EACH 1.00 LIME BG,50 LB MF-55 CAN,5 GA 5.00 SALT GEL BG,50 LB 8 SHRINK WRAPPING EACH 6.00 SODA ASH BG,50 LB 10 LAST OR CURRENT BHA BHA No: 2 Bit No: 2 MD In: ft Purpose: DRILL " INTERMEDIATE HOLE MD Out: 3,865.0 ft Component OD ID Jts Length PDC BIT POSITIVE DISPLACEMENT MOTOR FLOAT SUB SHOCK SUB POINT REAMER UBHO SUB NON-MAG DRILL COLLAR CROSSOVER POINT REAMER DRILL COLLAR CROSSOVER DRILL COLLAR CROSSOVER HWDP Total Length: 1, ft Wt below Jars: 54.0 kip DAILY COSTS (Top 15) Cost Description Vendor Amount Rig Work HELMERICH & PAYNE IDC $25,000 Directional Drilling & LWD PATHFINDER ENERGY $7,100 Direct Supervision OXY PERMIAN $3,725 Drilling & Completion Fluids M-I $3,498 Tax OXY PERMIAN $3,402 Eqpmnt Transportation Charges STEWART WELDING & MACHI $2,362 Rental Downhole Eqpmnt & Tools STABIL DRILL $1,600 Miscellaneous Services STEWART WELDING & MACHI $1,320 Miscellaneous Services KELLY'S PIPE INSPECTION, IN $1,112 Miscellaneous Services STEWART WELDING & MACHI $540 Rental Surface Eqpmnt & Tools MD TOTCO $320 Rental Downhole Eqpmnt & Tools STABIL DRILL $300 Rental Downhole Eqpmnt & Tools STABIL DRILL $300 Rig Move HELMERICH & PAYNE IDC $257 Rental Surface Eqpmnt & Tools FAS-LINE SALES & RENTALS, $150 3/25/2010 3:45:33PM Page 1 of 4

16 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 01/31/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 6 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS Operation Details 0:00 1: SURC DRLOUT DOCMT P TEST CASING TO 1211 PSI FOR 30 MINUTES. PRESSURE DROP TO 1200 PSI AFTER 30 MINS. PERFORM CHOKE DRILL WITH DRILL CREW. 1:00 2: SURC DRLOUT DOCMT P DRILL FIRM CEMENT & FLOAT EQUIPMENT FROM 290' TO 345' USING 7-10K AVERAGE WOB, 600 GPM, 64 MRPM + 40 SRPM = 104 BRPM, 1000 PSI OFF BOTTOM, 1100 PSI ON BOTTOM 2:00 3: INDR DRILL MTRDIR P DRILL 12 1/4" INTERMEDIATE HOLE FROM 345' TO 505' (160') (160 FPH AVG ROP ON BOTTOM) USING GPM, 2200 PSI OFF BOTTOM, 2480 PSI ON BOTTOM, 40 SRPM MRPM = 146 BRPM, 10-15K WOB AND 7-9K TORQUE. CIRCULATING RESERVE PITS AND DROPPING A SOAPSTICK ON EVERY CONNECTION. SURVEY 430' 0.62 DEG AZ 3:00 6: INDR DRILL MTRDIR P DRILL 12 1/4" INTERMEDIATE HOLE FROM 505' TO 1,020' (515') (172 FPH AVG ROP ON BOTTOM) USING 980 GPM, 2600 PSI OFF BOTTOM, 3000 PSI ON BOTTOM, 70 SRPM MRPM = 174 BRPM, 10-15K WOB AND 6-9K TORQUE. CIRCULATING RESERVE PITS AND DROPPING A SOAPSTICK ON EVERY CONNECTION. PUMPING 20 BBL HI VIS SWEEPS EVERY 200' OR SOONER IF NEEDED. SURVEY 610' 0.53 DEG AZ SURVEY 790' 0.70 DEG AZ 04:00 HOUR SAFETY BREAK - IMPORTANCE OF LOCK OUT AND TAG OUTS. 6:00 7: INDR DRILL MTRDIR P DRILL 12 1/4" INTERMEDIATE HOLE FROM 1,020' TO 1,141' (121') (81 FPH AVG ROP ON BOTTOM) USING 500 GPM, 900 PSI OFF BOTTOM, 1100 PSI ON BOTTOM, 70 SRPM + 54 MRPM = 124 BRPM, 6-10K WOB AND 6-8K TORQUE. DRILLING WITH ONE PUMP. CHANGING OUT A CAP GASKET ON #1 PUMP. 970' 0.70 INC AZI 1,126' 0.79 INC AZI CIRCULATING RESERVE PITS AND DROPPING A SOAPSTICK ON EVERY CONNECTION. PUMPING 20 BBL HI VIS SWEEPS EVERY 200' 7:30 8: INDR BOP CHRAMS P REMOVE TRIP NIPPLE AND INSTALL ROTATING HEAD. 8:00 10: INDR DRILL MTRDIR P DRILL 12 1/4" INTERMEDIATE HOLE FROM 1,141' TO 1,534', ROTATED 368' AND SLIDE 25' ( 164 FPH AVG ROP ON BTM ROTATING, 95 FPH ON BTM SLIDING) USING 950 GPM, 2650 PSI OFF BTM, 2950 PSI ON BTM, 70 SRPM MRPM = 172 BRPM 18K WOB, 6/7K TORQUE ON BTM, 2/3K TORQUE OFF BOTTOM TOTAL AVG ROP 157 FPH CIRCULATING RESERVE PITS AND DROPPING A SOAPSTICK ON EVERY CONNECTION. PUMPING 20 BBL HI VIS SWEEPS EVERY 200'. 1,313' 0.88 INC AZ 1,501' 0.18 INC AZ 08:00 SAFETY MEETING 15 MINS = DISCUSS THREE POINT CONTACT WHEN USING STAIRS. 10:30 13: INDR DRILL MTRDIR P DRILL 12 1/4" INTERMEDIATE HOLE FROM 1,534' TO 1,762', ROTATED 213' AND SLIDE 15' ( 85 FPH AVG ROP ON BTM ROTATING, 30 FPH ON BTM SLIDING) USING 500 GPM, 900 PSI OFF BOTTOM, 1100 PSI ON BOTTOM, 70 SRPM + 54 MRPM = 124 BRPM, 18K WOB AND 6-8K TORQUE. TOTAL AVG ROP 76 FPH 13:30 14: INDR RIGMT SRVRIG P RIG SERVICE DRILLING WITH ONE PUMP. CHANGING OUT A CAP GASKET ON #1 PUMP. 1690' 0.53 INC AZI CIRCULATING RESERVE PITS AND DROPPING A SOAPSTICK ON EVERY CONNECTION. PUMPING 20 BBL HI VIS SWEEPS EVERY 200' 12:00 SAFETY MEETING 15 MINS = DISCUSS FORKLIFT OPERATIONS WHEN LOADING AND UNLOADING TOOLS. DISCUSS ELECTRICAL SAFETY. 3/25/2010 3:45:33PM Page 2 of 4

17 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 01/31/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 6 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 14:00 15: INDR DRILL MTRDIR P DRILL 12 1/4" INTERMEDIATE HOLE FROM 1,762' TO 1,861', ROTATED 99' AND SLIDE 0' ( 99 FPH AVG ROP ON BTM ROTATING, 0 FPH ON BTM SLIDING) USING 500 GPM, 900 PSI OFF BOTTOM, 1100 PSI ON BOTTOM, 70 SRPM + 54 MRPM = 124 BRPM, 18K WOB AND 6-8K TORQUE. TOTAL AVG ROP 99 FPH DRILLING WITH ONE PUMP. CHANGING OUT A CAP GASKET ON #1 PUMP. CHANGE OUT PLUG AND BUFF FACING ON AREA WHERE CAP GASKETS SEALS. 1,784' 0.35 INC AZI CIRCULATING RESERVE PITS AND DROPPING A SOAPSTICK ON EVERY CONNECTION. PUMPING 20 BBL HI VIS SWEEPS EVERY 200' 15:00 17: INDR DRILL MTRDIR P DRILL 12 1/4" INTERMEDIATE HOLE FROM 1,861' TO 2,196', ROTATED 335' AND SLIDE 0' ( 134 FPH AVG ROP ON BTM ROTATING, 0 FPH ON BTM SLIDING) USING 900 GPM, 2650 PSI OFF BTM, 2950 PSI ON BTM, 70 SRPM + 96 MRPM = 166 BRPM 18-22K WOB, 8/10K TORQUE ON BTM, 3/4K TORQUE OFF BOTTOM TOTAL AVG ROP 134 FPH CIRCULATING RESERVE PITS AND DROPPING A SOAPSTICK ON EVERY CONNECTION. PUMPING 20 BBL HI VIS SWEEPS EVERY 200'. 1,878' 0.53 INC AZ 2,066' 0.79 INC AZ 16:00 SAFETY MEETING 15 MINS = DISCUSS LOCKOUT AND TAGOUT WHEN THIRD PARTY IS WORKING ON THIER EQUIPMENT. 17:30 19: INDR DRILL MTRDIR P DRILL 12 1/4" INTERMEDIATE HOLE FROM 2,196' TO 2328', ROTATED 132' AND SLIDE 0' (88 FPH AVG ROP ON BTM ROTATING, 0 FPH ON BTM SLIDING) USING 500 GPM, 900 PSI OFF BOTTOM, 1100 PSI ON BOTTOM, 70 SRPM + 54 MRPM = 124 BRPM, 18K WOB AND 6-8K TORQUE. TOTAL AVG ROP 88 FPH DRILLING WITH ONE PUMP. CHANGING OUT A SWAB ON #2 PUMP 2,254' 1.06 INC AZ CIRCULATING RESERVE PITS AND DROPPING A SOAPSTICK ON EVERY CONNECTION. PUMPING 20 BBL HI VIS SWEEPS EVERY 200' 19:00 0: INDR DRILL MTRDIR P DRILL 12 1/4" INTERMEDIATE HOLE FROM 2,328' TO 2775', ROTATED 430' (4.5 HR) AND SLIDE 17' (.5HR) (95.5 FPH AVG ROP ON BTM ROTATING, 34 FPH ON BTM SLIDING) USING 900 GPM, 2900 PSI OFF BOTTOM, 3200 PSI ON BOTTOM, 70 SRPM + 96 MRPM = 166 BRPM, 18K WOB AND 7-11K TORQUE. TOTAL AVG ROP 89.4 FPH 2,442' 1.23 INC AZ 2,630' 1.41 INC AZ CIRCULATING RESERVE PITS AND DROPPING A SOAPSTICK ON EVERY CONNECTION. PUMPING 20 BBL HI VIS SWEEPS EVERY 200' Total Time Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. N N Days since Last RI: Days since Last LTA: 20:00 HOUR SAFETY MEETING - NOT SHUTTING IN THE YATES FORMATION IF IT WAS TO START BLOWING. 00:00 HOUR SAFETY MEETING - GENERAL RIG HOUSE KEEPING Weather Comments: /25/2010 3:45:33PM Page 3 of 4

18 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 01/31/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 6 Other Remarks: FROM ODESSA GO WEST ON HWY MILES TO FM 181 TURN NORTH ON 181 GO MILES TO CATTLE GUARD #11 TURN EAST ONTO LEASE ROAD (H&P 370 SIGN), GO 1.2 MILES THEN SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 103 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY : EACH PERSONS POSITION WHEN MAKING CONNECTIONS. ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 614 DAYS SINCE LAST RECORDABLE: 168 TOTAL JSA REVIEWED: 16 TOTAL STOP CARDS: 40 TOTAL PRE-OP SAFETY MEETINGS: 8 TOTAL LO/TO: 0 TOTAL PERMITS TO WORK: 0 BEST STOP CARD OF THE DAY: H&P EMPLOYEE DID NOT RETRACT ST-80 TO COMPLETE REST POSITION. STOPPED JOB AND EXPLAINED THAT IT NEEDS TO BE ALL WAY BACK IN ORDER NOT TO COME IN CONTACT WITH DRILL PIPE BEING DRILLED DOWN. 93 JTS 9.625", 40 #/ft, LTC CASING DELIVERED (44 JTS K ', 49 JTS J ' TOTAL ') K-55 TO GO IN HOLE FIRST. PIPE MEASURED BY KELLYS INSPECTION & GILBERT ZAPATA (DSM). 3/25/2010 3:45:33PM Page 4 of 4

19 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/01/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 7 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: Engineer: 00 / 0 ft Rig: 3,865.0 ft Progress: 2,775.0 ft Rot Hrs Today: Avg ROP Today: QUEEN@3,600.0 H&P 370 1,090.0 ft hr 62.3 ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: 3.31 $57,351 $557,488 $2,655,407 Lithology: DOLOMITE, ANHY, SALT AND SAND RUNNING 9.625" INTERMEDIATE CASING AT 1,100', HAVING TO WASH DOWN 9 5/8" CASING THRU REDBED SECTION. DRILL AND TD " INTERMEDIATE HOLE AT 3865' AT 17:30 HOUR 02/01/2010, CIRCULATE TO RUN 9.625" CASING, PULL OUT OF HOLE RIG UP CASING RUNNING TOOLS, RUN 9.625" INTERMEDIATE CASING, CIRCULATE, CEMENT CASING, TEST BOP, PICK UP 8 3/4 DRILLIN CASING/WELL CONTROL PERSONNEL 3,855ft GILBERT ZAPATA MIKE SPRINGER JOHN EGELSTON 10,000ft 01/30/2010 Geologist: Oxy Personnel: 2 Contractor Personnel: 11 Total on Site: 13 Bit No Size Manufacturer HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model / kip kip 6,000.0 ft-lbf 12,000.0 ft-lbf HYDRAULICS Pump Rate: gpm Pump Press: 3,25 SURVEY DATA (LAST 6) MUD GAS Avg Max Conn: Trip: Backgr: MD Incl Azi TVD N/-S E/-W VS DLS Build 3, , , , , , , , , , , , Serial No BIT RECORD IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R SMITH Mi616 JY3429 M223 3x13, 3x , FC-A D-I-NO-TD BIT OPERATING PARAMETERS TODAY Bit No Rot Hrs Cum Rot Hrs Prog Cum Prog ROP Cum ROP WOB min/max RPM min/max TFA P Drop Bit Noz Vel HHPSI , , / / , MUD DATA - M-I Engineer: Saad Maraqa MBT: 5.0 lbm/bbl Sample From: Out ph: 9.0 Mud Type: Time / MD: Brine 17:00 / 3,855.0 Pm / Pom: Pf / Mf: 0.2 / 0.7 Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: / / 2 1 / 2 / / / 0.0 / bbl 6.10 / Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: 176,000 1,200 / 0 / 3 ppm 0.0 / 0.0 / VG Meter: 1@3 / 1@6 / 1@100 / 2@200 / 3@300 / 4@600 Comments: Added 50 sx of My Lo Jel at 3800'' for lubricity. Pumped high visc sweep at TD and circulated bottoms up.mw visc MUD PRODUCTS $4,097 $9,630 Product Units Qty Used ENGINEERING SERVICE EACH 1.00 MF-55 CAN,5 GA 5.00 Mi Wate (Barite) CAN,5 GA 4 MY LO JEL BG,50 LB 5 SALT GEL BG,50 LB 10 SHRINK WRAPPING EACH 4.00 LAST OR CURRENT BHA BHA No: 2 Bit No: 2 MD In: ft Purpose: DRILL " INTERMEDIATE HOLE MD Out: 3,865.0 ft Component OD ID Jts Length PDC BIT POSITIVE DISPLACEMENT MOTOR FLOAT SUB SHOCK SUB POINT REAMER UBHO SUB NON-MAG DRILL COLLAR CROSSOVER POINT REAMER DRILL COLLAR CROSSOVER DRILL COLLAR CROSSOVER HWDP Total Length: 1, ft Wt below Jars: 54.0 kip DAILY COSTS (Top 15) Cost Description Vendor Amount Rig Work HELMERICH & PAYNE IDC $25,000 Directional Drilling & LWD PATHFINDER ENERGY $7,100 Drilling & Completion Fluids MUSSLEWHITE TRUCKING $5,990 Drilling & Completion Fluids M-I $4,096 Direct Supervision OXY PERMIAN $3,725 Tax OXY PERMIAN $3,287 Miscellaneous Supplies BRANDT $2,835 Drilling & Completion Fluids MUSSLEWHITE TRUCKING $1,370 Drilling & Completion Fluids MUSSLEWHITE TRUCKING $1,059 Rental Surface Eqpmnt & Tools FAS-LINE SALES & RENTALS, $450 Eqpmnt Transportation Charges HUGHES OILFIELD TRANSPOR $331 Rental Surface Eqpmnt & Tools MD TOTCO $320 Eqpmnt Transportation Charges HUGHES OILFIELD TRANSPOR $285 Rig Move HELMERICH & PAYNE IDC $257 Eqpmnt Transportation Charges HUGHES OILFIELD TRANSPOR $162 3/25/2010 3:45:44PM Page 1 of 3

20 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/01/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 7 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS Operation Details 0:00 4: INDR DRILL MTRDIR P DRILL 12 1/4" INTERMEDIATE HOLE FROM 2,775' TO 3,040', ROTATED 265' (4 HR) AND SLIDE 0' (0HR) (66.25 FPH AVG ROP ON BTM ROTATING, 0 FPH ON BTM SLIDING) USING 900 GPM, 2900 PSI OFF BOTTOM, 3200 PSI ON BOTTOM, 70 SRPM + 96 MRPM = 166 BRPM, 18K WOB AND 7-11K TORQUE. TOTAL AVG ROP FPH 2,819' 0.88 INC AZ CIRCULATING RESERVE PITS AND DROPPING A SOAPSTICK ON EVERY CONNECTION. PUMPING 20 BBL HI VIS SWEEPS EVERY 200' 04:00 HOUR SAFETY BREAK - PROPER MEANS OF LIFTING HEAVY LOADS. KNOW YOUR LIMITATIONS OF HOW MUCH YOU CAN LIFT SAFELY. 4:00 6: INDR DRILL MTRDIR P DRILL 12 1/4" INTERMEDIATE HOLE FROM 3,040' TO 3,130', ROTATED 90' (2 HR) AND SLIDE 0' (0HR) (45 FPH AVG ROP ON BTM ROTATING, 0 FPH ON BTM SLIDING) USING 900 GPM, 2900 PSI OFF BOTTOM, 3200 PSI ON BOTTOM, 70 SRPM + 96 MRPM = 166 BRPM, 18K WOB AND 7-11K TORQUE. TOTAL AVG ROP 45 FPH 3,007' 0.53 INC AZ CIRCULATING RESERVE PITS AND DROPPING A SOAPSTICK ON EVERY CONNECTION. PUMPING 20 BBL HI VIS SWEEPS EVERY 200' 6:00 8: INDR DRILL MTRDIR P DRILL 12 1/4" INTERMEDIATE HOLE FROM 3,130' TO 3,326', ROTATED 196' AND SLIDE 0' (0HR) (98 FPH AVG ROP ON BTM ROTATING, 0 FPH ON BTM SLIDING) USING 900 GPM, 2900 PSI OFF BOTTOM, 3200 PSI ON BOTTOM, 70 SRPM + 96 MRPM = 166 BRPM, 25K WOB AND 7-11K TORQUE. TOTAL AVG ROP 98 FPH 3,195' 0.35 INC AZ CIRCULATING RESERVE PITS AND DROPPING A SOAPSTICK ON EVERY CONNECTION. PUMPING 20 BBL HI VIS SWEEPS EVERY 200' 8:00 8: INDR DRILL MTRDIR P DRILL 12 1/4" INTERMEDIATE HOLE FROM 3,326' TO 3,344', ROTATED 18' AND SLIDE 0' (36 FPH AVG ROP ON BTM ROTATING, 0 FPH ON BTM SLIDING) USING 500 GPM, 900 PSI OFF BOTTOM, 1100 PSI ON BOTTOM, 70 SRPM + 54 MRPM = 124 BRPM, 25K WOB AND 10K TORQUE. TOTAL AVG ROP 36 FPH DRILLING WITH ONE PUMP. CHANGING OUT A SWAB ON #1 PUMP 08:00 SAFETY MEETING 15 MINS = DISCUSS LOCKOUT AND TAGOUT ON MUD PUMPS WHEN CHANGING OUT SWABS. 8:30 14: INDR DRILL MTRDIR P DRILL 12 1/4" INTERMEDIATE HOLE FROM 3,344' TO 3,711', ROTATED 354' AND SLIDE 13' ( 71 FPH AVG ROP ON BTM ROTATING, 13 FPH ON BTM SLIDING) USING 900 GPM, 2950 PSI OFF BOTTOM, 3250 PSI ON BOTTOM, 70 SRPM + 96 MRPM = 166 BRPM, 25K WOB AND 12K TORQUE. TOTAL AVG ROP 62 FPH 3,383' 0.44 INC AZ 3,572' 0.44 INC AZ CIRCULATING RESERVE PITS AND DROPPING A SOAPSTICK ON EVERY CONNECTION. PUMPING 20 BBL HI VIS SWEEPS EVERY 200' 12:00 SAFETY MEETING 15 MINS = DISCUSS WEARING FACESHIELD WHEN USING PRESSURE WASHER. 3/25/2010 3:45:44PM Page 2 of 3

21 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/01/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 7 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 14:30 17: INDR DRILL MTRDIR P DRILL 12 1/4" INTERMEDIATE HOLE FROM 3,711' TO 3,865', ROTATED 154' AND SLIDE 0' ( 51 FPH AVG ROP ON BTM ROTATING, 0 FPH ON BTM SLIDING) USING 900 GPM, 2950 PSI OFF BOTTOM, 3250 PSI ON BOTTOM, 70 SRPM + 96 MRPM = 166 BRPM, 25-30K WOB AND 12K TORQUE. TOTAL AVG ROP 51 FPH 3,760' 0.09 INC AZ 3,788' 0.35 INC AZ PROJECTED TO BIT: 3865', 0.35 INC, AZ, ' TVD, 9.25 N-S, 0.48 E-W, 9.25 VETICAL SECTION. CIRCULATING RESERVE PITS AND DROPPING A SOAPSTICK ON EVERY CONNECTION. PUMPING 20 BBL HI VIS SWEEPS EVERY 200' NOTE: TURNED INTO WORKING STEEL PITS PRIOR TO T.D. AND MIXED 50 SACKS MY LO GEL IN ORDER TO CONDITION WALL CAKE AT 3,800'. T.D. 12 1/4" INTERMEDIATE HOLE AT 17:30 HOURS ON 02/01/ :00 SAFETY MEETING BREAK 15 MINS: DISCUSS UPCOMING TRIP, USING TAGLINE WHEN HANDLING BOTTOM HOLE TOOLS. 17:30 18: INDR CIRC CNDHOL P PUMP 50 BBLS HIGH - VISCOUS SWEEP AND CIRCULATE TWO BOTTOMS UP, PUMP SLUG. NOTE: 25% INCREASE IN 3/4" ROCKSIZE REDBED WITH SWEEP TO SURFACE. NOTIFIED TRRC OF UPCOMING 9 5/8" INTERMEDIATE CASING AND CEMENT JOB, CONTACTED SARA, OPERATER #1 AT 18:00 HOURS, 02/01/ :30 20: INDR TRIP DRILL P FLOW CHECK, NO FLOW. PUMP SLUG SLM OUT OF HOLE TO 1016'. DRAG OF 20 TO 50k AT 1500' TO 1000'. NO OTHER HOLE PROBLEMS. HOLE TAKING PROPER FILL. 20:00 HOUR SAFETY BREAK - LAY DOWN THE DIRECTIONAL TOOLS. THE HANDLING OF LARGE TOOLS. 20:00 20: INDR TRIP DRILL P PULL ROTATING HEAD RUBBER AND INSTALL TRIP NIPPLE. 20:30 22: INDR TRIP DRILL P CONTINUE TO SLM OUT OF HOLE FROM 1,016' WITH NO PROBLEMS FOR ENTERING CASING. LAY DOWN 8" DRILL COLLARS. DRILL PIPE STRAP 2.88' DIFFERENT (DEEPER) 22:00 23: INDR TRIP PULD P LAY DOWN PATHFINDER DIRECTIONAL TOOLS. BIT # 2 GRADING: 2-1-FC-A-D-I-NO-TD. 23:00 23: INDR OTHR OTHER P PULL FMC'S WEAR BUSHING. 23:30 0: INRC SAFE PJSM P PJSM WITH ALL PERSONNEL ON RUNING 9.625" CASING. Total Time Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. Other Remarks: N N Days since Last RI: Days since Last LTA: 00:00 HOUR SAFETY BREAK - RIGGING UP THE 9.625" CASING TOOLS. PINCH POINTS AND PLACES TO NOT BE CAUGHT INBETWEEN Weather Comments: FROM ODESSA GO WEST ON HWY MILES TO FM 181 TURN NORTH ON 181 GO MILES TO CATTLE GUARD #11 TURN EAST ONTO LEASE ROAD (H&P 370 SIGN), GO 1.2 MILES THEN SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 103 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY : LAST DAY NEED TO STAY FOCUSED UNTIL WORK PERIOD IS DONE. ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 615 DAYS SINCE LAST RECORDABLE: 169 TOTAL JSA REVIEWED: 16 TOTAL STOP CARDS: 40 TOTAL PRE-OP SAFETY MEETINGS: 8 TOTAL LO/TO: 0 TOTAL PERMITS TO WORK: 0 BEST STOP CARD OF THE DAY: H&P EMPLOYEE WAS RAISING WRANGLER WHEN IT WAS NOTICED THAT THE VEE DOOR HAND RAILS WERE CLOSED. STOPPED THE JOB AND SHOWED THE EMPLOYEE THEY WERE CLOSED. OPENED HAND RAILS AND JOB CONTINUED. 3/25/2010 3:45:44PM Page 3 of 3

22 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/02/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 8 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: Engineer: 00 / 0 ft Rig: 3,865.0 ft Progress: 3,865.0 ft Rot Hrs Today: Avg ROP Today: QUEEN@3,600.0 H&P ft hr 0.0 ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: 4.31 $262,606 $820,093 $2,655,407 Lithology: DOLOMITE, ANHY, SALT AND SAND TRIPPING IN HOLE WITH 8.750" PRODUCTION DRILLING ASSEMBLY AT 3,000'. RUN 9.625" INTERMEDIATE CASING TO 3855', CIRCULATE, CEMENT CASING, INSTALL FMC PACK OFF AND TEST TO 1800 PSI, TEST BOP PICK UP BHA # 3 FOR 8.750" STRAIGHT HOLE ASSEMBLY, TRIP IN HOLE, TEST CASING, PERFORM CHOKE DRILL, DRILL OUT SHOE TRA CASING/WELL CONTROL PERSONNEL 3,855ft GILBERT ZAPATA MIKE SPRINGER JOHN EGELSTON 10,000ft 02/02/2010 Geologist: Oxy Personnel: 2 Contractor Personnel: 12 Total on Site: 14 Bit No Size Manufacturer HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model / HYDRAULICS Pump Rate: gpm Pump Press: 1,00 SURVEY DATA (LAST 6) MUD GAS Avg Max Conn: Trip: Backgr: MD Incl Azi TVD N/-S E/-W VS DLS Build 3, , , , , , , , , , , , Serial No BIT RECORD IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R SMITH Mi616 JY3429 M223 3x13, 3x , FC-A D-I-NO-TD Bit No Rot Hrs Cum Rot Hrs BIT OPERATING PARAMETERS TODAY Prog Cum Prog ROP Cum ROP WOB RPM min/max min/max TFA P Drop Bit Noz Vel HHPSI MUD DATA - M-I Engineer: Saad Maraqa MBT: Sample From: In ph: Mud Type: Time / MD: Brine 16:30 / 3,840.0 Pm / Pom: Pf / Mf: Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: / / 2 1 / 2 / / / / bbl 5.20 / Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: 0 ppm 0.0 / 0.0 / VG Meter: 1@3 / 1@6 / 1@100 / 2@200 / 3@300 / 4@600 Comments: Added 50 sx of My Lo Jel at 3800'' for lubricity. Pumped high visc sweep at TD and circulated bottoms up.mw visc MUD PRODUCTS 7.5 lbm/bbl / , / 0 / 0 3 ppm Product Units Qty Used $0 $9,630 LAST OR CURRENT BHA BHA No: 2 Bit No: 2 MD In: ft Purpose: DRILL " INTERMEDIATE HOLE MD Out: 3,865.0 ft Component OD ID Jts Length PDC BIT POSITIVE DISPLACEMENT MOTOR FLOAT SUB SHOCK SUB POINT REAMER UBHO SUB NON-MAG DRILL COLLAR CROSSOVER POINT REAMER DRILL COLLAR CROSSOVER DRILL COLLAR CROSSOVER HWDP Total Length: 1, ft Wt below Jars: 54.0 kip DAILY COSTS (Top 15) Cost Description Vendor Amount Casing & Accessories SOONER PIPE $108,468 Casing & Accessories SOONER PIPE $89,412 Rig Work HELMERICH & PAYNE IDC $25,000 Tax OXY PERMIAN $17,180 Miscellaneous Services B & L CASING $7,855 Direct Supervision OXY PERMIAN $3,725 Casing & Accessories FMC TECHNOLOGIES $3,075 Casing & Accessories WEATHERFORD INTERNATION $2,244 Miscellaneous Services FMC TECHNOLOGIES $1,938 Eqpmnt Transportation Charges STEWART WELDING & MACHI $560 Rental Surface Eqpmnt & Tools MUSSLEWHITE TRUCKING $560 Drilling & Completion Fluids M-I $548 Rental Surface Eqpmnt & Tools FAS-LINE SALES & RENTALS, $450 Rental Surface Eqpmnt & Tools MD TOTCO $320 Rig Move HELMERICH & PAYNE IDC $257 3/25/2010 3:45:55PM Page 1 of 4

23 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/02/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 8 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS 0:00 1: INRC CSG RIGUP P RIG UP B&L 9.625" CASING TOOLS. Operation Details 1:30 4: INRC CSG RUNCSG P RUN 9 5/8", 40#, K-55 & J-55, LTC CASING AS FOLLOWS, TORQUE CASING TO 5610 FT-LBS 1 - WEATHERFORD FLOAT SHOE GUIDE SHOE MODEL # E303 (THREAD LOCKED) 2 - SHOE JOINTS 9 5/8", 40#, K-55, LTC (THREAD LOCKED) 1 - WEATHERFORD PDC DRILLABLE FLOAT COLLAR MODEL # E402 (THREAD LOCKED). NOTE: CHECKED PROPER OPERATION OF FLOAT EQUIPMENT AFTER MAKE UP. OK JOINTS 9 5/8", 40#, K-55, LTC CASING TO 822' 04:00 SAFETY BREAK - THE INSTALLING OF CASING SWEDGE THE THE HOOKING UP OF THE 2" MUD HOSE IN DERRICK FOR EACH CASING JT NEEDING TO BE WASHED DOWN. 4:00 6: INRC REAM RMTGT P HIT A TIGHT SPOT AT 822'. SWEDGE UP CASING AND WASH THRU REDBED SECTION FROM 822' TO 1400' USING 650 GPM AND 900 PSI. PH WAS AT A 9.5 IN OUR MUD PROPERTIES. 6:30 11: INRC REAM RMTGT P RUN 9 5/8", 40#, K-55 & J-55, LTC CASING AS FOLLOWS, TORQUE CASING TO 5610 FT-LBS 1 - WEATHERFORD FLOAT SHOE GUIDE SHOE MODEL # E303 FROM ' TO ' (THREAD LOCKED) 2 - SHOE JOINTS 9 5/8", 40#, K-55, LTC FROM ' TO ' (THREAD LOCKED) 1 - WEATHERFORD PDC DRILLABLE FLOAT COLLAR MODEL # E402 FROM ' TO ' (THREAD LOCKED) JOINTS 9 5/8", 40#, K-55, LTC CASING FROM ' TO ' 45 - JOINTS 9 5/8", 40#, J-55, LTC CASING FROM '' TO 31.22' 1 - JOINT (FMC MANDREL HANGER) 9 5/8", 40#, K-55, LTC CASING FROM 31.22' TO 25.00'. 1 - LANDING JT 9 5/8", 40#, K-55, LTC CASING 25.00' TO SURFACE WITH A 7' STICK UP. (ROTARY TABLE - ELEVATION TO WELL HEAD) INSTALLED BOW SPRING CENTRALIZERS AND WEATHERFORD SERIES S BOW WELDED CENTRALIZER AS FOLLOWS, 1 BOW SPRING ON COLLAR STOP 10' ABOVE SHOE, 1 BOW SPRING ON COUPLING 40' ABOVE SHOE, 1 BOW SPRING ON COUPLING ABOVE FLOAT COLLAR, 1 ON EVERY THIRD JOINT TO SURFACE. (31 TOTAL). 1 RIDGID CENTRILIZER OVER COUPLING BELOW MANDREL HANGER. HIT A TIGHT SPOT AT 2,041'. SWEDGE UP AND WASH FROM 2,041, TO 2,061' WITH 580 GPM AND 1000 PSI. 12:00 HOURS SAFETY MEETING 15 MINS. = HAND PLACEMENT AND GOOD COMMUNICATION WITH CASING CREW WHILE RUNNING CASING. 11:30 12: INRC CSG RUNCSG P MAKE UP LANDING JOINT AND WASH FROM 3,824' TO 3,855' WITH A 10' FILL USING 580 GPM AND 1000 PSI. 12:00 13: INRC CIRC CNDHOL P CIRCULATE 2X BOTTOMS UP AND RECIPROCATE CASING WHILE RIGGING DOWN B & L CASING CREW AND CONDUCTING PRE - JOB SAFETY MEETING WITH HALLIBURTON. LAND CASING MANDREL HANGER AND PERFORMED CEMENT JOB. 3/25/2010 3:45:55PM Page 2 of 4

24 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/02/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 8 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 13:00 16: INRC CMT PRIM P RIG UP CEMENT HEAD & LINES ON FLOOR, CEMENTED 9.625" INTERMEDIATE CASING IN PLACE AS FOLLOWS: TESTED CEMENTING LINES TO 250 PSI LOW AND 4000 PSI HIGH PRESSURE HOLDING ALL TEST FOR 5 MINUTES. PUMP 20 BBLS FRESH WATER SPACER AHEAD. 950 SACKS (419 BBLS) OF LEAD WITH 0.5 LBM/SK PHENO SEAL, 5 LBM/SK GILSONITE (INTERFILL C, 11.9 PPG, YIELD 2.48, MIX GAL / SACK) AT 8 BPM WITH 379 PSI 400 SACKS (94 BBL) OF TAIL WITH 1 LBM/SK PHENO SEAL (HALCEM, 14.8 PPG, YIELD 1.33, MIX 6.30 GAL / SACK) AT 6 BPM WITH 417 PSI. DROPPED TOP PLUG, WASH OUT CEMENTING LINES USING HALLIBURTON PUMP TRUCK ON TOP OF PLUG WITH 10 BBL FRESH WATER. DISPLACED CEMENT USING HALLIBURTON PUMPS WITH 285 BBLS FRESH WATER AT 8 BPM, AT 1150 PSI FINAL DISPLACEMENT PRESSURE. BUMPED PLUG TO 1700 PSI (500 PSI OVER). HELD PRESSURE FOR 5 MINUTES, BLED OFF PRESSURE BLEED BACK 1.5 BBL TO DISPLACEMENT TUBS ON CEMENT TRUCK. FLOAT EQUIPMENT HOLDING. CIRCULATED 195 BBLS (441 SACKS) OF CEMENT TO SURFACE. PLUG DOWN & CEMENT IN PLACE AT 15:35 HOURS ON 02/02/ :00 16: INRC CMT RIGUP P FLUSH OUT LINES AND BOP WITH FRESH WATER. RIG DOWN HALLIBURTON CEMENTERS. 16:30 18: INRC WLHD RWH P BACKOUT LANDING JOINT, PICK UP JOINT OF DRILL PIPE MAKE UP RUNNING TOOL AND INSTALL 13 5/8" X 9 5/8" PACK OFF IN WELL HEAD, TEST PACK OFF TO 1800 PSI FOR 20 MIN. - GOOD TEST 18:00 20: INRC CSG RIGUP P RIG DOWN CASING TOOLS (BAILS, ELEVATORS, AND SLIPS) AND CLEAN FLOOR. 20:00 HOUR SAFETY BREAK - TESTING WELL HEAD PACK OFF WITH HIGH PRESURE HAND PUMP. 20:00 0: INRC BOP TSTBOP P FUNCTION BOP. PICK UP TEST PLUG AND TEST BOP WITH MONAHANS NIPPLE UP. START TESTING BOPS: 10 MIN 250 PSI LOW TEST AND 5000 PSI HIGH TEST: TEST # 1: TEST BLIND RAMS INSIDE VALVE CHOKE MANIFOLD, INSIDE KILL VALVE TO 5000 PSI. TEST # 2: TEST LOWER PIPE RAMS AND HYDRAULIC VALVE ON TOP DRIVE SYSTEM (TDS). TEST # 3: TEST UPPER PIPE RAMS, OUTSIDE KILL LINE VALVE, HCR VALVE AND TDS MANUAL VALVE, TEST GOOD. TEST # 4: TEST UPPER PIPE RAMS, MANUAL CHOKE VALVE, CHECK VALVE ON KILL LINE. TEST # 5: TEST STAND PIPE LINE, 4 VALVE, 2 KILL LINE AND 2 VALVE TO 3500 PSI. TEST # 6: TEST STAND PIPE AND 4" VALVES ON MUD PUMPS TO 3500 PSI. TEST # 7: TEST ANNULAR BOP TO 3500 PSI. NOTE KOOMEY TEST: TEST ACCUMULATORS CAPACITY (114 SECONDS TO REGAIN MANIFOLD PRESSURE). Total Time Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. N N Days since Last RI: Days since Last LTA: 00:00 HOUR SAFETY BREAK - HIGH PRESSURE TESTING OF BOPS. - PINCH POINTS WHEN PICKING UP BHA - WEATHER CONDITIONS TURNING OFF COLD AGAIN 17 Weather Comments: /25/2010 3:45:55PM Page 3 of 4

25 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/02/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 8 Other Remarks: FROM ODESSA GO WEST ON HWY MILES TO FM 181 TURN NORTH ON 181 GO MILES TO CATTLE GUARD #11 TURN EAST ONTO LEASE ROAD (H&P 370 SIGN), GO 1.2 MILES THEN SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 103 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY : RUNNING AND CEMENTING 9.625" CASING. ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 616 DAYS SINCE LAST RECORDABLE: 170 TOTAL JSA REVIEWED: 16 TOTAL STOP CARDS: 40 TOTAL PRE-OP SAFETY MEETINGS: 8 TOTAL LO/TO: 0 TOTAL PERMITS TO WORK: 0 BEST STOP CARD OF THE DAY: OBSERVED CREW WORKING AREA WITH TOOLS LAYING AROUND. STOPPED JOB AND EXPLAINED THE NEED TO PICK UP TOOLS AND NOT BE A TRIP HAZARD. 3/25/2010 3:45:55PM Page 4 of 4

26 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/03/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 9 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: Engineer: 00 / 0 ft Rig: 4,732.0 ft Progress: 3,865.0 ft Rot Hrs Today: Avg ROP Today: SAN ANDRES@ H&P ft 9.50 hr 91.3 ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: 5.31 $71,493 $891,586 $2,655,407 Lithology: DOLOMITE & SHALE DRILLING 8.750" PRODUCTION HOLE AT 5,225' AT 100 FPH. TEST BOP, INSTALL WEAR BUSHING, PICK UP PRODUCTION DRILL ASSEMBLY AND TRIP IN HOLE TO 3761', TEST CASING AND PERFOR DRILL 8.750" PRODUCTION HOLE, POSSIBLE BIT TRIP +/- 6500'. CASING/WELL CONTROL PERSONNEL 3,855ft 9,698ft 02/02/2010 FIT / ppg GILBERT ZAPATA MIKE SPRINGER JOHN EGELSTON Geologist: Oxy Personnel: 2 Contractor Personnel: 15 Total on Site: 17 Bit No Size Manufacturer HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model / kip kip 2,000.0 ft-lbf 12,000.0 ft-lbf HYDRAULICS Pump Rate: gpm Pump Press: 2,50 SURVEY DATA (LAST 6) MUD GAS Avg Max Conn: Trip: Backgr: MD Incl Azi TVD N/-S E/-W VS DLS Build 4, , , , , , , , , , , , Serial No BIT RECORD IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R HUGHES CHRISTENS Q507FX M323 5x10, 2x11 3, , NO-A D-I-NO-BHA BIT OPERATING PARAMETERS TODAY Bit No Rot Hrs Cum Rot Hrs Prog Cum Prog ROP Cum ROP WOB min/max RPM min/max TFA P Drop Bit Noz Vel HHPSI / / MUD DATA - M-I Engineer: Jimmy Martin MBT: 0.0 lbm/bbl Sample From: In ph: 10.0 Mud Type: Time / MD: Fresh water 23:00 / 3,930.0 Pm / Pom: Pf / Mf: 0.1 / 0.5 Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: 8.50 / / 1 0 / 0 / / / 0.0 / bbl 0.90 / 8.00 Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: 5,400 4,400 / 0 / 0 2 ppm 0 ppm 0.0 / 0.0 / VG Meter: 1@3 / 1@6 / 1@100 / 1@200 / 2@300 / 3@600 Comments: Add lime thru chemical barrel at min per sack for 9-10pH. Add MF-55 at the flowline at 1 every 2 hours for solids control in reserve. For Sweep-fill Slug pit w/ Fresh water (80bbls), add 2 sk soda ash, 1 lime and fresh gel to get vis. MUD PRODUCTS $3,430 $13,060 Product Units Qty Used DRILLING PAPER BG,40 LB ENGINEERING SERVICE EACH 2.00 FEDERAL BENTONITE BG,100 LB 11 LIME BG,50 LB MF-55 CAN,5 GA 6.00 POLY-PLUS CAN,5 GA 1.00 SODA ASH BG,50 LB 2.00 LAST OR CURRENT BHA BHA No: 3 Bit No: 3 MD In: 3,865.0 ft Purpose: DRILL 8.750" PRODUCTION HOLE MD Out: 6,661.0 ft Component OD ID Jts Length PDC BIT DH DYNAMICS RECORDER POSITIVE DISPLACEMENT MOTOR FLOAT SUB CROSSOVER DH DYNAMICS RECORDER CROSSOVER UNDERGAUGE INTEGRAL BLADE STA UBHO SUB NON-MAG DRILL COLLAR UNDERGAUGE INTEGRAL BLADE STA DRILL COLLAR CROSSOVER HWDP Total Length: ft Wt below Jars: 37.0 kip DAILY COSTS (Top 15) Cost Description Vendor Amount Rig Work HELMERICH & PAYNE IDC $25,000 Bits, Reamers, Scrapers, HOs HUGHES CHRISTENSEN $13,500 Rental Downhole Eqpmnt & Tools NATIONAL OILWELL, INC. $10,400 Tax OXY PERMIAN $4,677 Direct Supervision OXY PERMIAN $3,725 Drilling & Completion Fluids M-I $3,430 Directional Drilling & LWD PATHFINDER ENERGY $3,350 Miscellaneous Services MONAHANS NIPPLE-UP SERV $2,100 Rental Downhole Eqpmnt & Tools STABIL DRILL $1,700 Elec., Water, Sewer, Trash B & L SATELLITE RENTALS $900 Rental Surface Eqpmnt & Tools FAS-LINE SALES & RENTALS, $450 Rental Surface Eqpmnt & Tools MD TOTCO $425 Rental Surface Eqpmnt & Tools MD TOTCO $320 Rig Move HELMERICH & PAYNE IDC $257 Miscellaneous Services B & L SATELLITE RENTALS $175 3/25/2010 3:46:05PM Page 1 of 4

27 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/03/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 9 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS Operation Details 0:00 1: INRC BOP TSTBOP P FINISH TESTING BOP. PULL TEST PLUG AND LAY DOWN. 1:00 1: INRC BOP TSTBOP P PICK UP AND INSTALL FMC WEAR BUSHING 1:30 2: INRC OTHR OTHER P CLEAR AND CLEAN RIG FLOOR 2:00 4: INRC TRIP PULD P STRAP AND PICK UP 8 3/4" PRODUCTION HOLE BHA AS FOLLOWS : 1 - BIT=HUGHES CHRISTENSEN Q507FX 7 BLADED, 16 MM CUTTERS, JETTED W/ 2/11'S AND 5/10'S TFA= BLACK BOX 1 - MUD MOTOR= PATHFINDER 6 3/4" G2 7/8 5.0, HR STRAIGHT HOLE PERFORMANCE WITH 1/8" UG INLINE STABILIZER & 1/8" UG SCREW ON STABILIZER, REV/GAL. 1 - FLOAT SUB 1 - XO SUB 1 - BLACK BOX 1 - XO SUB 1 - IBS STABILIZER (1/8" UNDER GAUGE) 1 - UBHO SUB 1 - NON MAGNETIC DRILL COLLAR (TEST MWD TOOL, OK) 1 - IBS STABILIZER (1/8" UNDER GAUGE) /2" DC 1 -CROSSOVER 6-5" HWDP 1 - DRILLING JARS ( TO BE RUN IN COMPRESSION ) 11-5" HWDP BHA WEIGHTS WITH 8.5 PPG MUD: 6 1/2" DC = 32k 6 1/2" DC + 6 HWTDP = 37k TOTAL BHA = 49k 04:00 HOUR SAFETY BREAK - PICKING UP AND LOADING OF MWD TOOL IN NMDC AND THE UBHO SUB. 4:30 6: INRC TRIP PULD P CONTINUE TO TRIP IN HOLE WITH 8.750" PRODUCTION DRILLING ASSEMBLY AT 3,000'. CREW CHANGE. 6:00 7: INRC TRIP DRILL P FINISH TRIPPING IN THE HOLE FROM 3,000' TO TOP OF CEMENT AT 3,761'. REMOVE TRIP NIPPLE AND INSTALL ROTATING HEAD. 7:00 8: INRC CSG PIPE P BREAK CIRCULATION AND PUMP THROUGH CHOKE MAINFOLD AND TEST CASING TO 3300 PSI FOR 30 MIN. - GOOD TEST PERFORM CHOKE DRILL WITH RIG CREW. 8:00 10: INRC DRLOUT DOCMT P DRILL FIRM CEMENT & FLOAT EQUIPMENT + 10' NEW FORMATION FROM 3,761' TO 3,875' USING 10K AVERAGE WOB, 450 GPM, 129 MRPM + 30 SRPM = 159 BRPM, 1150 PSI OFF BOTTOM, 1350 PSI ON BOTTOM 08:00 SAFETY BREAK- WORKING IN COLD WEATHER / RAINY CONDITIONS, MIXING CHEMICALS, PPE. 10:00 10: INRC DRLOUT FST P CIRCULATED BOTTOMS UP AND PREFORMED FIT TEST TO ,875' TVD USING 8.5 PPG MUD. EQUIVALENT MUD WEIGHT = 13.5 PPG. 10:30 11: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 3,875' TO 3,938' ROTATED 63 FT, USING 500 GPM, 2100 PSI OFF BTM, 2450 PSI ON BOTTOM, 30 SRPM MRPM = 174 BRPM, 15-20K WOB AND 4K TORQUE OFF BOTTOM AND 7K TORQUE ON BOTTOM. TOTAL AVG ROP 126 FPH 11:00 11: PRDR RIGMT SRVRIG P RIG SERVICE. PUMPING HIGH VIS (60 / 70 VIS) SWEEPS EVERY 200'. 3/25/2010 3:46:05PM Page 2 of 4

28 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/03/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 9 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 11:30 15: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 3,938' TO 4,120' ROTATED 182 FT, USING 600 GPM, 2000 PSI OFF BTM, 2450 PSI ON BOTTOM, 90 SRPM MRPM = 262 BRPM, 25-28K WOB AND 4K TORQUE OFF BOTTOM AND 7K TORQUE ON BOTTOM. TOTAL AVG ROP 52 FPH 3,970' 1.06 INC AZIMUTH 4,064' 1.93 INC AZIMUTH CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200' 12:00 HOURS SAFETY MEETING 15 MINS: DISCUSS GENERAL HOUSEKEEPING AND WATCHING WHERE YOU STEP. 15:00 18: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 4,120' TO 4,307' ROTATED 187 FT, USING 600 GPM, 2100 PSI OFF BTM, 2450 PSI ON BOTTOM, 90 SRPM MRPM = 262 BRPM, 18-30K WOB AND 4K TORQUE OFF BOTTOM AND 7K TORQUE ON BOTTOM. TOTAL AVG ROP 62 FPH 4,153' 1.93 INC AZIMUTH 4,252' 2.02 INC AZIMUTH CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200' 16:00 SAFETY MEETING 15 MINS = DISCUSS WEARING FACESHIELD WHEN USING PRESSURE WASHER. CREW CHANGE. 18:00 22: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 4,307' TO 4,590' ROTATED 283 FT, USING 600 GPM, 2100 PSI OFF BTM, 2450 PSI ON BOTTOM, 90 SRPM MRPM = 262 BRPM, 18-30K WOB AND 4K TORQUE OFF BOTTOM AND 7K TORQUE ON BOTTOM. TOTAL AVG ROP FPH 4,344' 2.02 INC AZIMUTH 4,441' 2.11 INC AZIMUTH CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 29 VIS, PH 10.0 MUD WT OUT PPG, 29 VIS, PH :00 HOUR SAFETY BREAK - WORKING WITH NEW HIRE EMPLOYEES. 22:00 23: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 4,590' TO 4,732' ROTATED 142 FT, USING 600 GPM, 2100 PSI OFF BTM, 2450 PSI ON BOTTOM, 90 SRPM MRPM = 262 BRPM, 18-30K WOB AND 4K TORQUE OFF BOTTOM AND 12K TORQUE ON BOTTOM. TOTAL AVG ROP 94.6 FPH 4,535' 2.20 INC AZIMUTH 4,629' 2.11 INC AZIMUTH CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 29 VIS, PH 10.0 MUD WT OUT PPG, 29 VIS, PH :30 0: PRDR RIGMT REP PT TROUBLE SHOOT CROWN SAVER. CABLE CAME UNPLUGGED IN DERRICK DUE TO VIBRATION. UNABLE TO MOVE TRAVELING BLOCKS UP OR DOWN. ROTATE AT 20 RPM AND CIRCULATE WITH RIG PUMPS AT 600 GPM. NO HOLE PROBLEMS. Total Time :00 HOUR SAFETY BREAK - TROUBLE SHOOTING TOP DRIVE AND WORKING WITH PLUGS IN TOP DRIVE. 3/25/2010 3:46:05PM Page 3 of 4

29 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/03/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 9 Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. Other Remarks: N N Days since Last RI: Days since Last LTA: Weather Comments: SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 103 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY : TRIPPING IN HOLE, RUNNING CASING PRESSURE TESTS, CHOKE DRILL PROCEDURES AND QUESTIONS, AND FIT TESTING PROCEDURES. ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 617 DAYS SINCE LAST RECORDABLE: 171 TOTAL JSA REVIEWED: 17 TOTAL STOP CARDS: 40 TOTAL PRE-OP SAFETY MEETINGS: 8 TOTAL LO/TO: 0 TOTAL PERMITS TO WORK: 0 BEST STOP CARD OF THE DAY: OBSERVED HAND WAS USING A HAMMER THAT HAD A CRACK IN HANDLE. STOPPED JOB AND SHOWED EMPLOYEE THAT THE HANDLE HAD A CRACK IN IT AND REPLACED HAMMER WITH ONE THAT WAS NOT CRACKED. 3/25/2010 3:46:05PM Page 4 of 4

30 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/04/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 10 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: Engineer: 00 / 0 ft Rig: 6,260.0 ft Progress: 4,732.0 ft Rot Hrs Today: Avg ROP Today: TUBB@ H&P 370 1,528.0 ft hr 65.0 ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: 6.31 $74,411 $965,997 $2,655,407 Lithology: 100% 6486'. DRILLING 8.750" PRODUCTION HOLE AT 6,580' AT 70 FPH. DRILLING 8.750" VERTICAL PRODUCTION HOLE FROM 4,732' TO 6,260'. RIG SERVICE AND SURVEY. DRILL 8.750" VERTICAL PRODUCTION HOLE, POSSIBLE TRIP FOR SCHLUMBERGER POWER V ASSEMBLY. CASING/WELL CONTROL PERSONNEL 3,855ft 9,698ft 02/02/2010 FIT / ppg GILBERT ZAPATA MIKE SPRINGER JOHN EGELSTON Geologist: Oxy Personnel: 2 Contractor Personnel: 15 Total on Site: 17 Bit No Size Manufacturer HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model / kip kip 5,000.0 ft-lbf 13,000.0 ft-lbf HYDRAULICS Pump Rate: gpm Pump Press: 2,50 SURVEY DATA (LAST 6) MUD GAS Avg Max Conn: Trip: Backgr: MD Incl Azi TVD N/-S E/-W VS DLS Build 6, , , , , , , , , , , , Serial No BIT RECORD IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R HUGHES CHRISTENS Q507FX M323 5x10, 2x11 3, , NO-A D-I-NO-BHA BIT OPERATING PARAMETERS TODAY Bit No Rot Hrs Cum Rot Hrs Prog Cum Prog ROP Cum ROP WOB min/max RPM min/max TFA P Drop Bit Noz Vel HHPSI , , / / MUD DATA - M-I Engineer: Jimmy Martin MBT: 0.0 lbm/bbl Sample From: IN ph: 11.0 Mud Type: Time / MD: Fresh water 23:00 / 6,140.0 Pm / Pom: Pf / Mf: 0.3 / 0.4 Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: 8.70 / / 1 0 / 0 / / / 0.0 / bbl 0.60 / 5.80 Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: 52,000 3,200 / / 0 5 ppm 0 ppm 0.0 / 0.0 / VG Meter: 1@3 / 1@6 / 1@100 / 1@200 / 2@300 / 3@600 Comments: ADD LIME THRU CHEMICAL BARREL AT MINUTES PER SACK FOR 9-10Ph. ADD MF-55 AT THE FLOWLINE AT 1 EVERY 2 HR FOR SOLIDS CONTROL IN RESERVE. MUD PRODUCTS $2,272 $15,332 Product Units Qty Used ENGINEERING SERVICE EACH 2.00 FEDERAL BENTONITE BG,100 LB MF-55 CAN,5 GA 5.00 SODA ASH BG,50 LB 2.00 LAST OR CURRENT BHA BHA No: 3 Bit No: 3 MD In: 3,865.0 ft Purpose: DRILL 8.750" PRODUCTION HOLE MD Out: 6,661.0 ft Component OD ID Jts Length PDC BIT DH DYNAMICS RECORDER POSITIVE DISPLACEMENT MOTOR FLOAT SUB CROSSOVER DH DYNAMICS RECORDER CROSSOVER UNDERGAUGE INTEGRAL BLADE STA UBHO SUB NON-MAG DRILL COLLAR UNDERGAUGE INTEGRAL BLADE STA DRILL COLLAR CROSSOVER HWDP Total Length: ft Wt below Jars: 37.0 kip DAILY COSTS (Top 15) Cost Description Vendor Amount Rig Work HELMERICH & PAYNE IDC $25,000 Fuel & Lubricants THOMAS PETROLEUM $16,198 Rental Downhole Eqpmnt & Tools NATIONAL OILWELL, INC. $6,450 Tax OXY PERMIAN $4,868 Directional Drilling & LWD PATHFINDER ENERGY $4,715 Direct Supervision OXY PERMIAN $3,725 Rental Surface Eqpmnt & Tools M-I $2,400 Drilling & Completion Fluids M-I $2,272 Eqpmnt Transportation Charges PRADON CONSTRUCTION & T $1,913 Mud Logging WEATHERFORD INTERNATION $1,420 Mud Logging WEATHERFORD INTERNATION $950 Elec., Water, Sewer, Trash B & L SATELLITE RENTALS $900 Eqpmnt Transportation Charges HUGHES OILFIELD TRANSPOR $845 Rental Surface Eqpmnt & Tools FAS-LINE SALES & RENTALS, $450 Drilling & Completion Fluids CATALYST CHEMICALS $449 3/25/2010 3:42:40PM Page 1 of 4

31 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/04/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 10 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS Operation Details 0:00 4: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 4,732' TO 5,060' ROTATED 328 FT, USING 600 GPM, 2100 PSI OFF BTM, 2450 PSI ON BOTTOM, 90 SRPM MRPM = 262 BRPM, 30K WOB AND 4K TORQUE OFF BOTTOM AND 12K TORQUE ON BOTTOM. TOTAL AVG ROP 82 FPH 4,817' 2.46 INC AZIMUTH 5,005' 2.37 INC AZIMUTH CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 29 VIS, PH 10.0 MUD WT OUT PPG, 29 VIS, PH :00 SAFETY BREAK - CHANGING SCREENS ON SHALE SHAKERS. 4:00 6: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 5,060' TO 5,225' ROTATED 165 FT, USING 600 GPM, 2000 PSI OFF BTM, 2250 PSI ON BOTTOM, 90 SRPM MRPM = 262 BRPM, 30K WOB AND 5K TORQUE OFF BOTTOM AND 13K TORQUE ON BOTTOM. TOTAL AVG ROP 83 FPH 4,817' 2.46 INC AZIMUTH 5,005' 2.37 INC AZIMUTH CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 29 VIS, PH 10.0 MUD WT OUT PPG, 29 VIS, PH CREW CHANGE 6:00 10: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 5,225' TO 5,488' ROTATED 263 FT, USING 600 GPM, 2050 PSI OFF BTM, 2400 PSI ON BOTTOM, 90 SRPM MRPM = 262 BRPM, 30K WOB AND 5K TORQUE OFF BOTTOM AND 13K TORQUE ON BOTTOM. TOTAL AVG ROP 66 FPH 5,194' 2.55 INC AZIMUTH 5,382' 2.55 INC AZIMUTH CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 29 VIS, PH 10.0 MUD WT OUT PPG, 29 VIS, PH :00 SAFETY MEETING 15 MINS = DISCUSS GOOD COMMUNICATION WITH DRILLER AND FLOOR HANDS WHEN TIGHTENING ROTATING HEAD. 10:00 14: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 5,488' TO 5,691' ROTATED 203 FT, USING 500 GPM, 1600 PSI OFF BTM, 1800 PSI ON BOTTOM, 90 SRPM MRPM = 234 BRPM, 30K WOB AND 5K TORQUE OFF BOTTOM AND 10K TORQUE ON BOTTOM. TOTAL AVG ROP 51 FPH 5,570' 2.64 INC AZIMUTH DRILLING WITH #1 MUD PUMP WHILE CHANGING OUT PLUG AND CAP GASKETS. CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 29 VIS, PH 10.0 MUD WT OUT PPG, 29 VIS, PH :00 SAFETY MEETING 15 MINS = DISCUSS USING LOCKOUT AND TAGOUT WHILE WORKING ON MUD PUMPS. WATCHING OUT FOR THIRD PARTY PERSONNEL WHILE RIGGING UP EQUIPMENT. 3/25/2010 3:42:40PM Page 2 of 4

32 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/04/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 10 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 14:00 16: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 5,691' TO 5,817' ROTATED 126 FT, USING 600 GPM, 2200 PSI OFF BTM, 2450 PSI ON BOTTOM, 90 SRPM MRPM = 262 BRPM, 30K WOB AND 5K TORQUE OFF BOTTOM AND 12K TORQUE ON BOTTOM. TOTAL AVG ROP 63 FPH 16:00 16: PRDR SAFE PJSM P RIG SERVICE 5,758' 2.90 INC AZIMUTH CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 29 VIS, PH 10.0 MUD WT OUT PPG, 29 VIS, PH :00 SAFETY MEETING 15 MINS = DISCUSS PROPER PPE WHILE MIXING CHEMICALS AND RIG SERVICE. 16:30 18: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 5,817' TO 5,915' ROTATED 98 FT, USING 500 GPM, 1750 PSI OFF BTM, 2000 PSI ON BOTTOM, 60 SRPM MRPM = 204 BRPM, 30K WOB AND 5K TORQUE OFF BOTTOM AND 8K TORQUE ON BOTTOM. TOTAL AVG ROP 65 FPH BACKGROUND GAS: 25 UNITS CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 29 VIS, PH 10.0 MUD WT OUT PPG, 29 VIS, PH 10.0 CREW CHANGE. 18:00 22: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 5,915' TO 6,140' ROTATED 225 FT, USING 500 GPM, 1750 PSI OFF BTM, 2000 PSI ON BOTTOM, 60 SRPM MRPM = 204 BRPM, 30K WOB AND 5K TORQUE OFF BOTTOM AND 8K TORQUE ON BOTTOM. TOTAL AVG ROP FPH BACKGROUND GAS: 25 UNITS 5,946' 3.25 INC AZIMUTH 6,135' 3.87 INC AZIMUTH CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 29 VIS, PH 9.0 MUD WT OUT PPG, 29 VIS, PH 9.0 NOTE: SCHLUMBERGER DIRECTIONAL (POWER V DRILLING ASSEMBLY) TOOLS AND PERSSONEL ON LOCATION AT 20:00 HR. 20:00 HOUR SAFETY BREAK - THE RUNNING OF THE SCHLUMBERGER POWER V DRILLING ASSEMBLY ON THE NEXT TRIP. 3/25/2010 3:42:40PM Page 3 of 4

33 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/04/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 10 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 22:00 0: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 6,140' TO 6,260' ROTATED 120 FT, USING 600 GPM, 2000 PSI OFF BTM, 2500 PSI ON BOTTOM, + 60 SRPM MRPM = 262 BRPM, 30K WOB AND 5K TORQUE OFF BOTTOM AND 12K TORQUE ON BOTTOM. Total Time Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. Other Remarks: N N Days since Last RI: Days since Last LTA: TOTAL AVG ROP 60 FPH WELL IS FLOWING AT 3 BPH. BACKGROUND GAS: UNITS CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 29 VIS, PH 9.0 MUD WT OUT PPG, 29 VIS, PH 9.0 NOTE: AT 6200' WENT TO 600 GPM AND 90 RPM ON TOP DRIVE. ROP WENT TO FT/HR. SLOWED TOP DRIVE TO 60 RPM 600 GPM AND ROP WENT TO FT/HR. MAINTAIN TOP DRIVE AT 60 RPM. 00:00 HOUR SAFETY BREAK - WORKING AROUND GAS THAT IS COMING BACK OUT OF FLOW LINE AT SHAKERS OR TO RESERVE PIT Weather Comments: SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 103 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY : DRILLING WITH A MOTOR AND MAKING CONNECTIONS WITH DRILLING JARS IN COMPRESSION. ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 618 DAYS SINCE LAST RECORDABLE: 172 TOTAL JSA REVIEWED: 18 TOTAL STOP CARDS: 48 TOTAL PRE-OP SAFETY MEETINGS: 9 TOTAL LO/TO: 0 TOTAL PERMITS TO WORK: 1HOT WORK PERMIT. BEST STOP CARD OF THE DAY: WHILE MAKING ROUNDS INSPECTING RIG EQUIPMENT, NOTICED TURNBUCKLES LOOSE ON BOP STACK AND BOP MOVING. TIGHTENED TURNBUCKLES TO KEEP BOP STILL AND NOT LOOSEN ROTATING HEAD CLAMP AND KEEP BOP IN ALIGNMENT. 3/25/2010 3:42:40PM Page 4 of 4

34 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/05/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 11 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: Engineer: 00 / 0 ft Rig: 6,847.0 ft Progress: 6,260.0 ft Rot Hrs Today: Avg ROP Today: WICHITA ALBANY@7,010.0 H&P ft 9.50 hr 61.8 ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: 7.31 $108,387 $1,074,384 $2,655,407 Lithology: 90% DOLOMITE, 10% 7000'. DRILL 8.750" VERTICAL PRODUCTION HOLE AT 7,089' AT 75 FPH. DRILL 8.750" VERTICAL PRODUCTION HOLE TO 6661', TROUBLE SHOOT MWD, CIRCULATE FOR TRIP, PULL OUT OF HOLE TO 5995', SPO DRILL 8.750" VERTICAL PRODUCTION HOLE. CASING/WELL CONTROL PERSONNEL 3,855ft 9,698ft 02/02/2010 FIT / ppg GILBERT ZAPATA MIKE SPRINGER JOHN EGELSTON Geologist: Oxy Personnel: 2 Contractor Personnel: 15 Total on Site: 17 Bit No Size Manufacturer HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model / kip kip 4,000.0 ft-lbf 9,000.0 ft-lbf HYDRAULICS Pump Rate: gpm Pump Press: 2,50 SURVEY DATA (LAST 6) MUD GAS Avg Max Conn: Trip: Backgr: MD Incl Azi TVD N/-S E/-W VS DLS Build 6, , , , , , , , , , , , Serial No BIT RECORD IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R SECURITY DBS FX M423 5x10, 2x11 6, , CR-N D-I-CT-PR HUGHES CHRISTENS Q507FX M323 5x10, 2x11 3, , NO-A D-I-NO-BHA BIT OPERATING PARAMETERS TODAY Bit No Rot Hrs Cum Rot Hrs Prog Cum Prog ROP Cum ROP WOB min/max RPM min/max TFA P Drop Bit Noz Vel HHPSI / / , / / MUD DATA - M-I Engineer: Jimmy Martin MBT: 0.0 lbm/bbl Sample From: In ph: 11.0 Mud Type: Time / MD: Fresh water 23:00 / 6,775.0 Pm / Pom: Pf / Mf: 0.3 / 0.4 Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: 8.80 / / 1 0 / 0 / / / 0.0 / bbl 0.10 / 1.30 Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: 48,000 3,200 / / 0 5 ppm 0 ppm 0.0 / 0.0 / VG Meter: 1@3 / 1@6 / 1@100 / 1@200 / 2@300 / 3@600 Comments: ADD LIME THRU CHEMICAL BARREL AT MINUTES PER SACK FOR 9-10PH.ADD MF-55 AT THE FLOWLINE AT 1 EVERY 2 HRS FOR SOLIDS CONTROL IN RESERVE.FOR SWEEP-FILL SLUG PIT W/ FRESH WATER (80BBLS), ADD 2 SACKS SODA ASH, 1 MUD PRODUCTS $1,411 $16,742 Product Units Qty Used ENGINEERING SERVICE EACH 2.00 FEDERAL BENTONITE BG,100 LB SODA ASH BG,50 LB 2.00 LAST OR CURRENT BHA BHA No: 4 Bit No: 4 MD In: 6,661.0 ft Purpose: DRILL VERTICAL 8.750" PRODUCTION HOLE MD Out: 8,790.0 ft Component OD ID Jts Length PDC BIT DH DYNAMICS RECORDER ROTARY STEERABLE MOTOR FLOAT SUB CROSSOVER POSITIVE DISPLACEMENT MOTOR DH DYNAMICS RECORDER NON-MAG INTEGRAL BLADE STABILIZ NON-MAG FLEX PONY COLLAR MWD TOOL NON-MAG INTEGRAL BLADE STABILIZ NON-MAG DRILL COLLAR CROSSOVER DRILL COLLAR Total Length: ft Wt below Jars: 21.0 kip DAILY COSTS (Top 15) Cost Description Vendor Amount Directional Drilling & LWD SCHLUMBERGER $35,420 Rig Work HELMERICH & PAYNE IDC $25,000 Bits, Reamers, Scrapers, HOs HALLIBURTON ENERGY SERV $10,000 Directional Drilling & LWD PATHFINDER ENERGY $7,200 Tax OXY PERMIAN $7,091 Rental Downhole Eqpmnt & Tools NATIONAL OILWELL, INC. $6,450 Direct Supervision OXY PERMIAN $3,725 Drilling & Completion Fluids MUSSLEWHITE TRUCKING $3,332 Rental Downhole Eqpmnt & Tools SMITH INTERNATIONAL, INC. $2,190 Drilling & Completion Fluids M-I $1,411 Mud Logging WEATHERFORD INTERNATION $950 Drilling & Completion Fluids MUSSLEWHITE TRUCKING $624 Elec., Water, Sewer, Trash B & L SATELLITE RENTALS $600 Drilling & Completion Fluids MUSSLEWHITE TRUCKING $567 Eqpmnt Transportation Charges STEWART WELDING & MACHI $560 3/25/2010 3:42:51PM Page 1 of 4

35 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/05/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 11 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS Operation Details 0:00 4: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 6,260' TO 6,505' ROTATED 245 FT, USING 600 GPM, 2000 PSI OFF BTM, 2500 PSI ON BOTTOM, + 60 SRPM MRPM = 262 BRPM, 30K WOB AND 5K TORQUE OFF BOTTOM AND 12K TORQUE ON BOTTOM. TOTAL AVG ROP FPH WELL IS FLOWING AT 3 BPH. BACKGROUND GAS: UNITS 6,323' 4.31 INC AZIMUTH CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 29 VIS, PH 9.0 MUD WT OUT PPG, 29 VIS, PH :00 HOUR SAFETY BREAK - HAND PLACEMENT WHILE MAKING CONNECTIONS. 4:00 5: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 6,505' TO 6,565' ROTATED 60 FT, USING 600 GPM, 2000 PSI OFF BTM, 2500 PSI ON BOTTOM, + 60 SRPM MRPM = 262 BRPM, 30K WOB AND 5K TORQUE OFF BOTTOM AND 12K TORQUE ON BOTTOM. TOTAL AVG ROP 60 FPH WELL IS FLOWING AT 3 BPH. BACKGROUND GAS: UNITS 6,511' 5.01 INC AZIMUTH CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 29 VIS, PH 9.0 MUD WT OUT PPG, 29 VIS, PH 9.0 5:00 5: PRDR WLCNTL NOCIRC P MONITOR WELL IN TRIP TANK. WELL FLOWING AT 3 BPH AND DIMINISHING TO 2 BPH. 5:30 6: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 6,565' TO 6,590' ROTATED 25 FT, USING 600 GPM, 2000 PSI OFF BTM, 2500 PSI ON BOTTOM, + 60 SRPM MRPM = 262 BRPM, 30K WOB AND 5K TORQUE OFF BOTTOM AND 12K TORQUE ON BOTTOM. TOTAL AVG ROP 50 FPH WELL IS FLOWING AT 3 BPH. CIRCULATED BOTTOMS UP, TESTED SAMPLES WITH 48K ON CHLORIDES A PH OF 10 AND 8.7 PPG MUD WEIGHT. BACKGROUND GAS: UNITS CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 29 VIS, PH 9.0 MUD WT OUT PPG, 29 VIS, PH 9.0 CREW CHANGE. 6:00 7: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 6,590' TO 6,661' ROTATED 71 FT, USING 600 GPM, 2000 PSI OFF BTM, 2500 PSI ON BOTTOM, + 60 SRPM MRPM = 262 BRPM, 30K WOB AND 5K TORQUE OFF BOTTOM AND 12K TORQUE ON BOTTOM. TOTAL AVG ROP 71 FPH WELL IS FLOWING AT 3 BPH. BACKGROUND GAS: UNITS CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 29 VIS, PH 9.0 MUD WT OUT PPG, 29 VIS, PH 9.0 7:00 8: PRDR SURV INCL PT TROUBLESHOOOT MWD TOOL WITH DIFFERENT PARAMETERS, NO SUCCESS. MWD TOOL FAILURE. PUMP SWEEP AND CIRCULATE. DECISION IS TO TRIP, LAYDOWN PATHFINDER AND PICK UP SCHLUMBERGER POWER V. 3/25/2010 3:42:51PM Page 2 of 4

36 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/05/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 11 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 8:00 8: PRDR CIRC CNDHOL P CIRCULATE SWEEP TO SURFACE AND MONITOR WELL, WELL FLOWING AT 2 BPH. 08:00 SAFETY MEETING 15 MINS = 8:30 9: PRDR TRIP DRILL P TRIP OUT OF FROM 6,661' TO 5,995'. 9:00 9: PRDR CIRC CNDHOL P SPOT 50 BBLS 10# AT 5,995'. MONITOR WELL, WELL STATIC WITH 50 BBLS 10.0 PPG BRINE IN HOLE THIS GIVES A MUD WEIGHT EQUIVALENT OF 8.92 PPG. 9:30 12: PRDR TRIP DRILL P TRIP OUT OF HOLE FROM 5,995' TO SURFACE WITH PROPER HOLE FILL. 12:00 SAFETY MEETING 15 MINS = GOOD COMMUNICATION AND USING TAGLINE WHILE LAYING DOWN BOTTOM HOLE TOOLS. 12:00 14: PRDR TRIP BHA P BREAK AND LAYDOWN PATHFINDER 8 3/4" BHA. GRADED BIT AT A 1 & 1. 14:00 14: PRDR TRIP BHA P CLEAN RIG FLOOR FOR SAFETY. 14:30 16: PRDR TRIP BHA P HOLD PRE-JOB SAFETY MEETING WITH SCHLUMBERGER DIRECTIONAL PERSONNEL AND RIG CREW. PICK UP 8 3/4" BHA AS FOLLOW /4" SECURITY FX 75 JETTED WITH 2X11'S AND 5X10'S (TFA 0.569, 7 BLADED, 16 MM CUTTERS) 1 - BLACK BOX (NOV) 1 - POWER V 1 - FILTER SUB 1 - NM CROSSOVER 1 - MUDMOTOR.29 REV/GAL 1 - BLACKBOX (NOV) 1 - NM IBS (1/4" UG) 1 - NM SUB (PIN X PIN) 1 - SCHLUMBERGER SLIM PULSE MWD TOOL 1 - NM IBS (1/4" UG) 1 - NMDC 1 - CROSSOVER (TEST MWD TOOLS - OK) 3-6 1/2" SPIRAL DC'S 1 - DRILLING JARS (TO BE RUN IN COMPRESSION) 7-6 1/2" SPIRAL DC'S 1 - CROSSOVER 17-5" HWDP 16:00 HOURS SAFETY MEETING 15 MINS = PINCH POINTS WHEN USING IRONROUNECK TO MAKE UP TOOLS. 16:30 20: PRDR TRIP BHA P TRIP IN HOLE WITH SCHLUMBERGER POWER V DRILLING ASSEMBLY TO 6618'. 20:00 HOUR SAFETY BREAK - TRIPPING DRILL STRING AND MAKING CONNECTIONS. 20:30 21: PRDR CIRC CNDHOL P FILL DRILL PIPE. WASH FROM 6618' TO 6661'. NO FILL. DOWN LINK SCHLUMBERGER POWER V MOTOR SYSTEM. 21:00 0: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 6,661' TO 6,847' ROTATED 186 FT, USING 550 GPM, 2100 PSI OFF BTM, 2600 PSI ON BOTTOM, 30 SRPM MRPM = 190 BRPM, 30K WOB AND 4K TORQUE OFF BOTTOM AND 9K TORQUE ON BOTTOM. TOTAL AVG ROP 62 FPH WELL IS FLOWING AT 2-3 BPH ON CONNECTIONS. BACKGROUND GAS: UNITS 6,582' 5.21 INC AZIMUTH 6,627' 5.37 INC AZIMUTH 6,722' 5.59 INC AZIMUTH CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 28 VIS, PH 11.0 MUD WT OUT PPG, 28 VIS, PH 11.0 Total Time Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. N N Days since Last RI: Days since Last LTA: 00:00 HOUR SAFETY MEETING - GENERAL HOUSEKEEPING AROUND RIG Weather Comments: /25/2010 3:42:51PM Page 3 of 4

37 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/05/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 11 Other Remarks: FROM ODESSA GO WEST ON HWY MILES TO FM 181 TURN NORTH ON 181 GO MILES TO CATTLE GUARD #11 TURN EAST ONTO LEASE ROAD (H&P 370 SIGN), GO 1.2 MILES THEN SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 102 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY : TRIPPING DRILL STRINGS. ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 619 DAYS SINCE LAST RECORDABLE: 173 TOTAL JSA REVIEWED: 18 TOTAL STOP CARDS: 48 TOTAL PRE-OP SAFETY MEETINGS: 8 TOTAL LO/TO: 0 TOTAL PERMITS TO WORK: 0 BEST STOP CARD OF THE DAY: OBSERVED H&P EMPLOYEE USING THE WRONG LENGTH LANYARD WHILE USING THE MAN LIFT. STOP OPERATION AND EXPLAINED THE REASONS FOR THE DIFFERENT LENGTHS OF LANYARDS. 3/25/2010 3:42:51PM Page 4 of 4

38 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/06/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 12 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: Engineer: 00 / 0 ft Rig: 8,175.0 ft Progress: 6,847.0 ft Rot Hrs Today: Avg ROP Today: PENN DETRITAL@ H&P 370 1,328.0 ft hr 57.7 ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: 8.31 $92,517 $1,166,901 $2,655,407 Lithology: 20% CHERT, 80% 8332'. DRILLING 8 3/4" VERTICAL PRODUCTION HOLE AT 8,355'. ROP 8' HOUR. DRILLING 8.750" VERTICAL PRODUCTION HOLE WITH SCHLUMBERGER POWER V TOOL FROM 6,847' TO 8,175'. RIG SERVICE AND SURV DRILL 8.750" VERTICAL PRODUCTION HOLE UNTIL ROP DROPS, POSSIBLE PULL OUT OF HOLE AND PICK UP INSERT BIT TO GET THROU CASING/WELL CONTROL PERSONNEL 3,855ft 9,698ft 02/02/2010 FIT / ppg GILBERT ZAPATA MIKE SPRINGER JOHN EGELSTON Geologist: Oxy Personnel: 2 Contractor Personnel: 15 Total on Site: 17 Bit No Size Manufacturer HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model / kip kip 3,500.0 ft-lbf 7,000.0 ft-lbf HYDRAULICS Pump Rate: gpm Pump Press: 2,70 SURVEY DATA (LAST 6) MUD GAS Avg Max Conn: Trip: Backgr: MD Incl Azi TVD N/-S E/-W VS DLS Build 8, , , , , , , , , , , , Serial No BIT RECORD IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R SECURITY DBS FX M423 5x10, 2x11 6, , CR-N D-I-CT-PR HUGHES CHRISTENS Q507FX M323 5x10, 2x11 3, , NO-A D-I-NO-BHA BIT OPERATING PARAMETERS TODAY Bit No Rot Hrs Cum Rot Hrs Prog Cum Prog ROP Cum ROP WOB min/max RPM min/max TFA P Drop Bit Noz Vel HHPSI , , / / MUD DATA - M-I Engineer: Jimmy Martin MBT: 0.0 lbm/bbl Sample From: In ph: 11.5 Mud Type: Time / MD: Fresh water 23:00 / 8,124.0 Pm / Pom: Pf / Mf: 0.4 / 1.0 Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: 9.10 / / 5 2 / 2 / / / 0.0 / bbl 0.70 / 6.10 Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: 74, / / 0 5 ppm 0 ppm 0.0 / 0.0 / VG Meter: 1@3 / 2@6 / 4@100 / 5@200 / 7@300 / 9@600 Comments: ADD LIME THRU CHEMICAL BARREL AT MINUTES PER SACK FOR 9-10PH.ADD MF-55 AT THE FLOWLINE AT 1 EVERY 2 HRS FOR SOLIDS CONTROL IN RESERVE.FOR SWEEP-FILL SLUG PIT W/ FRESH WATER (80BBLS), ADD 2 SACKS SODA ASH, 1 MUD PRODUCTS $11,892 $28,635 Product Units Qty Used DUO-VIS BG,25 LB ENGINEERING SERVICE EACH 2.00 FEDERAL BENTONITE BG,100 LB 2 MF-55 CAN,5 GA 2.00 POLYPAC R BG,50 LB SODA ASH BG,50 LB SOLTEX BG,50 LB LAST OR CURRENT BHA BHA No: 4 Bit No: 4 MD In: 6,661.0 ft Purpose: DRILL VERTICAL 8.750" PRODUCTION HOLE MD Out: 8,790.0 ft Component OD ID Jts Length PDC BIT DH DYNAMICS RECORDER ROTARY STEERABLE MOTOR FLOAT SUB CROSSOVER POSITIVE DISPLACEMENT MOTOR DH DYNAMICS RECORDER NON-MAG INTEGRAL BLADE STABILIZ NON-MAG FLEX PONY COLLAR MWD TOOL NON-MAG INTEGRAL BLADE STABILIZ NON-MAG DRILL COLLAR CROSSOVER DRILL COLLAR Total Length: ft Wt below Jars: 21.0 kip DAILY COSTS (Top 15) Cost Description Vendor Amount Rig Work HELMERICH & PAYNE IDC $25,000 Directional Drilling & LWD SCHLUMBERGER $20,420 Fuel & Lubricants THOMAS PETROLEUM $15,541 Drilling & Completion Fluids M-I $11,893 Rental Downhole Eqpmnt & Tools NATIONAL OILWELL, INC. $6,450 Tax OXY PERMIAN $6,052 Direct Supervision OXY PERMIAN $3,725 Mud Logging WEATHERFORD INTERNATION $950 Rental Surface Eqpmnt & Tools FAS-LINE SALES & RENTALS, $450 Rental Surface Eqpmnt & Tools MD TOTCO $377 Rental Downhole Eqpmnt & Tools SMITH INTERNATIONAL, INC. $265 Rig Move HELMERICH & PAYNE IDC $257 Camp & Catering STALLION OILFIELD SERVICE $120 Rental Surface Eqpmnt & Tools STALLION OILFIELD SERVICE $119 Rental Surface Eqpmnt & Tools M-I $110 3/25/2010 3:43:03PM Page 1 of 4

39 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/06/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 12 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS Operation Details 0:00 1: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 6,847' TO 6,895' ROTATED 48 FT, USING 550 GPM, 2100 PSI OFF BTM, 2600 PSI ON BOTTOM, 30 SRPM MRPM = 190 BRPM, 30K WOB AND 4K TORQUE OFF BOTTOM AND 9K TORQUE ON BOTTOM. TOTAL AVG ROP 48 FPH WELL IS FLOWING AT 2-3 BPH ON CONNECTIONS. BACKGROUND GAS: UNITS 6,816' 5.88 INC AZIMUTH CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 28 VIS, PH 11.0 MUD WT OUT PPG, 28 VIS, PH :00 3: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 6,895' TO 6,992' ROTATED 97 FT, USING 550 GPM, 2100 PSI OFF BTM, 2600 PSI ON BOTTOM, 30 SRPM MRPM = 190 BRPM, 17K WOB AND 2K TORQUE OFF BOTTOM AND 5K TORQUE ON BOTTOM. NOTE: NOT DROPPING ANGLE WITH POWER V. BACKED OFF WEIGHT TO HELP POWER V TO DROP ANGLE AND KEEP GRAVITY DIRECTION INSTEAD OF MAGNETIC. DIRECTIONAL DRILLER DOWN LINKED WITH TOOL. SCHLUMBERGER THINKS TOOL DRILLING TOO FAST FOR TOOL TO REACT TO HELP IN DROPPING ANGLE. TOTAL AVG ROP 48 FPH WELL IS FLOWING AT 2-3 BPH ON CONNECTIONS. BACKGROUND GAS: UNITS 6,911' 6.87 INC AZIMUTH CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 28 VIS, PH 11.0 MUD WT OUT PPG, 28 VIS, PH :00 3: PRDR OTHR OTHER P DISCUSS WITH SCHLUMBERGER IN OKLAHOMA AND WITH OXY ENGINEER IN HOUSTON OF ANGLE PROBLEM. DECISION WAS MADE TO DRILL ANOTHER 52' SO MWD CAN SEE IF TOOL DROPPING ANGLE FROM PREVIOUS DOWN LINKING FROM COMPUTER. 3:30 6: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 6,992' TO 7,089' ROTATED 97 FT, USING 585 GPM, 2200 PSI OFF BTM, 2620 PSI ON BOTTOM, 30 SRPM MRPM = 200 BRPM, 17-18K WOB AND 4K TORQUE OFF BOTTOM AND 7K TORQUE ON BOTTOM. TOTAL AVG ROP 39 FPH WELL IS FLOWING AT 2-3 BPH ON CONNECTIONS. BACKGROUND GAS: UNITS 6,963' 6.81 INC AZIMUTH ANGLE DROPPING - DISCUSSED WITH HOUSTON - DECISION MADE TO DRILL ANOTHER 40'. CIRCULATING OUTER RESERVE PITS AND PUMPING 20 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 28 VIS, PH 11.0 MUD WT OUT PPG, 28 VIS, PH :00 HOUR SAFETY BREAK - PREPARING FOR POSSIBLE TRIP OUT OF HOLE WITH SCHLUMBERGER TOOL. CREW CHANGE. 3/25/2010 3:43:03PM Page 2 of 4

40 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/06/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 12 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 6:00 10: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 7,089' TO 7,335' ROTATED 246 FT, USING 585 GPM, 2250 PSI OFF BTM, 2550 PSI ON BOTTOM, 30 SRPM MRPM = 200 BRPM, 18K WOB AND 4K TORQUE OFF BOTTOM AND 7K TORQUE ON BOTTOM. DRILLING WITH 180 DEGREE TOOLFACE WITH 50% STEERING RATIO ON POWER V TOOL. TOTAL AVG ROP 62 FPH WELL IS FLOWING AT 2-3 BPH ON CONNECTIONS. BACKGROUND GAS: UNITS 7,007' 6.54 INC AZIMUTH 7,101' 6.20 INC AZIMUTH 7,194' 6.01 INC AZIMUTH CIRCULATING OUTER RESERVE PITS AND PUMPING 25 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 28 VIS, PH 11.0 MUD WT OUT PPG, 28 VIS, PH :00 HOUR SAFETY MEETING 15 MINS = DISCUSS UPCOMING MUD UP, WEARING PROPER PPE AND PROPER LIFTING TECHNIQUES WHEN HANDLING HEAVY MUD SACKS. 10:00 14: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 7,335' TO 7,550' ROTATED 215 FT, USING 558 GPM, 2250 PSI OFF BTM, 2550 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 18K WOB AND 4K TORQUE OFF BOTTOM AND 7K TORQUE ON BOTTOM. DRILLING WITH 180 DEGREE TOOLFACE WITH 50% STEERING RATIO ON POWER V TOOL. TOTAL AVG ROP 54 FPH WELL IS FLOWING AT 2-3 BPH ON CONNECTIONS. DRILLING IN 90% DOLOMITE AND 10% CHERT AT 7,530' 7,289' 5.55 INC AZIMUTH 7,380' 5.08 INC AZIMUTH 7,477' 4.43 INC AZIMUTH 14:00 14: PRDR RIGMT SRVRIG P RIG SERVICE 12:00 HOUR SAFETY MEETING 15 MINS = DISCUSS LOCKOUT AND TAGOUT WHEN THIRD PARTY PERSONNEL ARE WORKING ON THEIR EQUIPMENT. 14:30 18: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 7,550' TO 7,800' ROTATED 250 FT, USING 558 GPM, 2250 PSI OFF BTM, 2550 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 18K WOB AND 4K TORQUE OFF BOTTOM AND 7K TORQUE ON BOTTOM. DRILLING WITH 180 DEGREE TOOLFACE WITH 50% STEERING RATIO ON POWER V TOOL. TOTAL AVG ROP 71 FPH WELL IS FLOWING AT 2-3 BPH ON CONNECTIONS. BACKGROUND GAS: 25 UNITS 7,664' 3.37 INC AZIMUTH CIRCULATING OUTER RESERVE PITS AND PUMPING 25 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 28 VIS, PH 11.0 MUD WT OUT PPG, 28 VIS, PH :00 HOUR SAFETY MEETING 15 MINS = DISCUSS GENERAL HOUSEKEEPING ON RIG FLOOR AND USING FACESHIELD WHEN OPERATING POWERWASHER. 3/25/2010 3:43:03PM Page 3 of 4

41 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/06/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 12 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 18:00 22: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 7,800' TO 8,055' ROTATED 255 FT, USING 558 GPM, 2250 PSI OFF BTM, 2400 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 28-30K WOB AND 3K TORQUE OFF BOTTOM AND 7K TORQUE ON BOTTOM. DRILLING WITH 180 DEGREE TOOLFACE WITH 50% STEERING RATIO ON POWER V TOOL. TOTAL AVG ROP FPH WELL IS FLOWING AT 1 BPH ON CONNECTIONS. BACKGROUND GAS: UNITS 7,851' 2.00 INC AZIMUTH 8,039' 0.59 INC AZIMUTH NOTE: CIRCULATING THROUGH RIG STEEL PITS AT 7800' AND MUDDING UP AS PER PROGRAM. CIRCULATING RIG PITS AND PUMPING 25 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 28 VIS, PH 11.0 MUD WT OUT PPG, 28 VIS, PH :00 HOUR SAFETY BREAK - MIXING CHEMICALS WITH THE PORPER PPE. 22:00 0: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 8,055' TO 8,175' ROTATED 120 FT, USING 558 GPM, 2250 PSI OFF BTM, 2700 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 28-30K WOB AND 3K TORQUE OFF BOTTOM AND 7K TORQUE ON BOTTOM. Total Time Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. Other Remarks: N N Days since Last RI: Days since Last LTA: DRILLING WITH 180 DEGREE TOOLFACE WITH 50% STEERING RATIO ON POWER V TOOL. TOTAL AVG ROP 60 FPH WELL IS FLOWING AT 1/2 BPH ON CONNECTIONS. BACKGROUND GAS: UNITS 8,039' 0.59 INC AZIMUTH NOTE: CIRCULATING THROUGH RIG STEEL PITS AND MUDDING UP AS PER PROGRAM (2% BY VOL BLACK FURY, 2 PPB SOLTEX BY 8200') AND PUMPING 25 BBLS HI VIS SWEEPS EVERY 200'. MUD WT IN PPG, 30 VIS, PH 10.0 MUD WT OUT PPG, 30 VIS, PH :00 HOUR SAFETY BREAK - WATCHING FOR PROBLEMATIC SHALES IN THE WOODFORD SHALES Weather Comments: 62 FROM ODESSA GO WEST ON HWY MILES TO FM 181 TURN NORTH ON 181 GO MILES TO CATTLE GUARD #11 TURN EAST ONTO LEASE ROAD (H&P 370 SIGN), GO 1.2 MILES THEN SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 102 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY : MIXING CHEMICALS WITH PROPER PPE. ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 620 DAYS SINCE LAST RECORDABLE: 174 TOTAL JSA REVIEWED: 18 TOTAL STOP CARDS: 48 TOTAL PRE-OP SAFETY MEETINGS: 8 TOTAL LO/TO: 0 TOTAL PERMITS TO WORK: 0 BEST STOP CARD OF THE DAY: OBSERVED H&P EMPLOYEE WITH A PAIR OF BOOTS WHICH THE STEEL TOES WERE JUST STARTING TO SHOW THROUGH THE LEATHER. EMPLOYEE WAS TALKED WITH ABOUT GETTING A NEW PAIR OF BOOTS NEXT HITCH OUT. 3/25/2010 3:43:03PM Page 4 of 4

42 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/07/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 13 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: Engineer: 00 / 0 ft Rig: 8,688.0 ft Progress: 8,175.0 ft Rot Hrs Today: Avg ROP Today: PENN DETRITAL@ H&P ft hr 21.8 ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: 9.31 $90,571 $1,257,472 $2,655,407 Lithology: 70% LIMESTONE, 30% 8637' DRILLING 8 3/4" VERTICAL PRODUCTION HOLE AT 8,740'. ROP 10' HOUR. DRILLING 8.750" VERTICAL PRODUCTION HOLE WITH SCHLUMBERGER POWER V TOOL FROM 8,175' TO 8,688'. RIG SERVICE AND SURV DRILL 8.750" VERTICAL PRODUCTION HOLE UNTIL ROP DROPS, POSSIBLE PULL OUT OF HOLE AND PICK UP NEW BIT. CASING/WELL CONTROL PERSONNEL 3,855ft 9,698ft 02/02/2010 FIT / ppg GILBERT ZAPATA MIKE SPRINGER JOHN EGELSTON Geologist: Oxy Personnel: 2 Contractor Personnel: 15 Total on Site: 17 Bit No Size Manufacturer HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model / kip kip 3,000.0 ft-lbf 7,000.0 ft-lbf HYDRAULICS Pump Rate: gpm Pump Press: 2,45 SURVEY DATA (LAST 6) MUD GAS Avg Max Conn: Trip: Backgr: MD Incl Azi TVD N/-S E/-W VS DLS Build 8, , , , , , , , , , , , Serial No BIT RECORD IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R SECURITY DBS FX M423 5x10, 2x11 6, , CR-N D-I-CT-PR BIT OPERATING PARAMETERS TODAY Bit No Rot Hrs Cum Rot Hrs Prog Cum Prog ROP Cum ROP WOB min/max RPM min/max TFA P Drop Bit Noz Vel HHPSI , / / MUD DATA - M-I Engineer: Jimmy Martin MBT: 0.0 lbm/bbl Sample From: In ph: 10.0 Mud Type: Time / MD: Fresh water 23:00 / 8,664.0 Pm / Pom: Pf / Mf: 0.1 / 0.3 Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: 9.40 / / 29 7 / 10 / / / 0.0 / bbl 3.00 / Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: 74, / / 0 2 ppm 0 ppm 0.0 / 0.0 / VG Meter: 6@3 / 9@6 / 27@100 / 36@200 / 44@300 / 59@600 Comments: RETURN TO STEEL PITS AND START MUDDING UP AT 7,800''. START RAISING WT TO 9.4 WITH ADDITIONS OF BRINE AS PER CO MAN ORDER. SYSTEM IS UP TO ALL REQUIRED SPECS AS PER WELL PROG PROVIDED BY MI. MAINTAIN FLUID PROPERTIES MUD PRODUCTS $18,310 $46,944 Product Units Qty Used BLACK FURRY UNIT 1.00 DUO-VIS BG,25 LB ENGINEERING SERVICE EACH 2.00 LIME BG,50 LB POLYPAC R BG,50 LB POLY-PLUS CAN,5 GA 1.00 SODA ASH BG,50 LB LAST OR CURRENT BHA BHA No: 4 Bit No: 4 MD In: 6,661.0 ft Purpose: DRILL VERTICAL 8.750" PRODUCTION HOLE MD Out: 8,790.0 ft Component OD ID Jts Length PDC BIT DH DYNAMICS RECORDER ROTARY STEERABLE MOTOR FLOAT SUB CROSSOVER POSITIVE DISPLACEMENT MOTOR DH DYNAMICS RECORDER NON-MAG INTEGRAL BLADE STABILIZ NON-MAG FLEX PONY COLLAR MWD TOOL NON-MAG INTEGRAL BLADE STABILIZ NON-MAG DRILL COLLAR CROSSOVER DRILL COLLAR Total Length: ft Wt below Jars: 21.0 kip DAILY COSTS (Top 15) Cost Description Vendor Amount Rig Work HELMERICH & PAYNE IDC $25,000 Directional Drilling & LWD SCHLUMBERGER $24,680 Drilling & Completion Fluids M-I $18,310 Rental Downhole Eqpmnt & Tools NATIONAL OILWELL, INC. $6,450 Tax OXY PERMIAN $5,925 Direct Supervision OXY PERMIAN $3,725 Eqpmnt Transportation Charges PRADON CONSTRUCTION & T $2,871 Mud Logging WEATHERFORD INTERNATION $950 Rental Surface Eqpmnt & Tools FAS-LINE SALES & RENTALS, $450 Rental Surface Eqpmnt & Tools MD TOTCO $377 Rental Downhole Eqpmnt & Tools SMITH INTERNATIONAL, INC. $265 Rig Move HELMERICH & PAYNE IDC $257 Elec., Water, Sewer, Trash B & L SATELLITE RENTALS $175 Camp & Catering STALLION OILFIELD SERVICE $120 Rental Surface Eqpmnt & Tools STALLION OILFIELD SERVICE $119 3/25/2010 3:43:14PM Page 1 of 4

43 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/07/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 13 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS Operation Details 0:00 4: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 8,175' TO 8,334' ROTATED 159 FT, USING 558 GPM, 2250 PSI OFF BTM, 2700 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 28-30K WOB AND 3K TORQUE OFF BOTTOM AND 7K TORQUE ON BOTTOM. DRILLING WITH 180 DEGREE TOOLFACE WITH 50% STEERING RATIO ON POWER V TOOL. TOTAL AVG ROP FPH WELL STOP FLOWING ON CONNECTIONS WHEN MUD WT WAS AT PPG. BACKGROUND GAS: UNITS 8,225' 0.05 INC AZIMUTH NOTE: CIRCULATING THROUGH RIG STEEL PITS AND MUDDING UP AS PER PROGRAM (2% BY VOL BLACK FURY, 2 PPB SOLTEX BY 8200') AND PUMPING 25 BBLS HI VIS SWEEPS EVERY 200' IF NEEDED. MUD WT IN PPG, 32 VIS, PH 10.0 MUD WT OUT PPG, 32 VIS, PH :00 HOUR SAFETY BREAK - PREPARING FOR POSSIBLE UPCOMING TRIP TO CHANGE BIT. 4:00 6: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 8,334' TO 8,355' ROTATED 21 FT, USING 558 GPM, 2250 PSI OFF BTM, 2700 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 28-32K WOB AND 3K TORQUE OFF BOTTOM AND 7K TORQUE ON BOTTOM. DRILLING WITH 180 DEGREE TOOLFACE WITH 50% STEERING RATIO ON POWER V TOOL. TOTAL AVG ROP 10.5 FPH WELL STOP FLOWING ON CONNECTIONS WHEN MUD WT WAS AT PPG. BACKGROUND GAS: UNITS. NOTE: CIRCULATING THROUGH RIG STEEL PITS AND MUDDING UP AS PER PROGRAM (2% BY VOL BLACK FURY, 2 PPB SOLTEX BY 8200'). MUD WT IN PPG, 40 VIS, PH 10.0 MUD WT OUT PPG, 40 VIS, PH :00 10: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 8,355' TO 8,411' ROTATED 56 FT, USING 558 GPM, 2250 PSI OFF BTM, 2400 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 32K WOB AND 3K TORQUE OFF BOTTOM AND 5K TORQUE ON BOTTOM. DRILLING WITH 180 DEGREE TOOLFACE WITH 50% STEERING RATIO ON POWER V TOOL. TOTAL AVG ROP 14 FPH 100% LIMESTONE WITH TRACE CHERT AT 8,400' BACKGROUND GAS: 10 UNITS. NOTE: CIRCULATING THROUGH RIG STEEL PITS AND MUDDING UP AS PER PROGRAM (2% BY VOL BLACK FURY, 2 PPB SOLTEX BY 8200'). MUD WT IN PPG, 48 VIS, PH 10.0 WATERLOSS 8 CC MUD WT OUT PPG, 48 VIS, PH 10.0 WATERLOSS 8 CC 08:00 HOURS SAFETY MEETING 15 MINS = DISCUSS MSDS WHEN NOT SURE ABOUT WHAT CHEMICALS YOUR MIXING. 3/25/2010 3:43:14PM Page 2 of 4

44 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/07/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 13 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 10:00 15: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 8,411' TO 8,498' ROTATED 87 FT, USING 558 GPM, 2250 PSI OFF BTM, 2400 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 32K WOB AND 3K TORQUE OFF BOTTOM AND 5K TORQUE ON BOTTOM. 15:00 15: PRDR RIGMT SRVRIG P RIG SERVICE. DRILLING WITH 180 DEGREE TOOLFACE WITH 50% STEERING RATIO ON POWER V TOOL. TOTAL AVG ROP 17 FPH 70% LIMESTONE AND 30% RED SHALE AT 8,450' SURVEY AT 8,411' 0.05 INC AZIMUTH BACKGROUND GAS: 8 UNITS. NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 2 PPB SOLTEX ). MUD WT IN PPG, 48 VIS, PH 10.0 WATERLOSS 8 CC MUD WT OUT PPG, 48 VIS, PH 10.0 WATERLOSS 8 CC 12:00 HOURS SAFETY MEETING 15 MINS = DISCUSS FORKLIFT OPERATIONS AND UNLOADING CASING WITH THIRD PARTY PERSONNEL 15:30 18: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 8,498' TO 8,548' ROTATED 50 FT, USING 558 GPM, 2100 PSI OFF BTM, 2400 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 32K WOB AND 3K TORQUE OFF BOTTOM AND 7K TORQUE ON BOTTOM. DRILLING WITH 36 MAGNETIC TOOLFACE WITH 50% STEERING RATIO ON POWER V TOOL. STEERING TOWARDS THE NORTHEAST. TOTAL AVG ROP 20 FPH 100% LIMESTONE AT 8,500' BACKGROUND GAS: 5 UNITS. NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 2 PPB SOLTEX ). MUD WT IN PPG, 48 VIS, PH 10.0 WATERLOSS 7 CC MUD WT OUT PPG, 48 VIS, PH 10.0 WATERLOSS 7 CC 16:00 HOURS SAFETY MEETING 15 MINS = DISCUSS GENERAL HOUSEKEEPING AND TRASH PICKED UP AROUND LOCATION. CREW CHANGE 18:00 22: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 8,548' TO 8,630' ROTATED 82 FT, USING 558 GPM, 2100 PSI OFF BTM, 2400 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 32K WOB AND 3K TORQUE OFF BOTTOM AND 7K TORQUE ON BOTTOM. DRILLING WITH 36 MAGNETIC TOOLFACE WITH 50% STEERING RATIO ON POWER V TOOL. STEERING TOWARDS THE NORTHEAST. TOTAL AVG ROP 20.5 FPH 90% LIMESTONE, 10% RED SHALE AT 8,600' BACKGROUND GAS: 5 UNITS. NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 2 PPB SOLTEX ). MUD WT IN PPG, 48 VIS, PH 10.0 WATERLOSS 7 CC MUD WT OUT PPG, 48 VIS, PH 10.0 WATERLOSS 7 CC 20:00 HOUR SAFETY BREAK - WET AND SLIPPERY CONIDITIONS FROM WEATHER. 3/25/2010 3:43:14PM Page 3 of 4

45 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/07/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 13 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 22:00 0: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 8,630' TO 8,688' ROTATED 58 FT, USING 558 GPM, 2200 PSI OFF BTM, 2450 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 32K WOB AND 3K TORQUE OFF BOTTOM AND 7K TORQUE ON BOTTOM. Total Time Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. Other Remarks: N N Days since Last RI: Days since Last LTA: DRILLING WITH 36 MAGNETIC TOOLFACE WITH 50% STEERING RATIO ON POWER V TOOL. STEERING TOWARDS THE NORTHEAST. TOTAL AVG ROP 29 FPH 90% LIMESTONE, 10% RED SHALE AT 8,600' SURVEY AT 8,604' 1.25 INC AZIMUTH BACKGROUND GAS: 5 UNITS. NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 2 PPB SOLTEX ). MUD WT IN PPG, 48 VIS, PH 10.0 WATERLOSS 7 CC MUD WT OUT PPG, 48 VIS, PH 10.0 WATERLOSS 7 CC 00:00 HOUR SAFETY BREAK - KEEPING COVERS ON MAN HOLES ON RIG MUD PITS - PROPER OPERATION OF MUD BUCKET Weather Comments: FROM ODESSA GO WEST ON HWY MILES TO FM 181 TURN NORTH ON 181 GO MILES TO CATTLE GUARD #11 TURN EAST ONTO LEASE ROAD (H&P 370 SIGN), GO 1.2 MILES THEN SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 102 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY : GOOD HOUSE KEEPING PRACTICES ON DRILL RIG. ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 621 DAYS SINCE LAST RECORDABLE: 175 TOTAL JSA REVIEWED: 18 TOTAL STOP CARDS: 48 TOTAL PRE-OP SAFETY MEETINGS: 8 TOTAL LO/TO: 0 TOTAL PERMITS TO WORK: 0 BEST STOP CARD OF THE DAY: WHILE WALKING BY PIPE RACKS NOTICED A STOPPER PIN MISSING FROM END OF PIPE RACK, KEEPING TUBLARS FROM ROLLING OFF RACK. STOPPED AND INSTALLED THE PIN WHICH IS WELDED ON A CHAIN TO PIPE RACK. 3/25/2010 3:43:14PM Page 4 of 4

46 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/08/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 14 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: Engineer: 00 / 0 ft Rig: 8,790.0 ft Progress: 8,688.0 ft Rot Hrs Today: Avg ROP Today: PENN DETRITAL@ H&P ft hr 8.9 ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: $252,432 $1,509,904 $2,655,407 Lithology: 100% SHALY 8873'. DRILLING 8 3/4" VERTICAL PRODUCTION HOLE AT 9,011'. ROP 60' HOUR. DRILL 8.750" VERTICAL PRODUCTION HOLE WITH SCHLUMBERGER POWER V TOOL FROM 8,688' TO 8,790', CIRCULATE FOR TRIP OUT, DRILL 8.750" VERTICAL PRODUCTION HOLE WITH SCHLUMBERGER POWER V TOOL. CASING/WELL CONTROL PERSONNEL GILBERT ZAPATA MIKE SPRINGER JUAN SIERRA 3,855ft 9,698ft 02/02/2010 FIT / ppg Geologist: Oxy Personnel: 2 Contractor Personnel: 15 Total on Site: 17 Bit No Size Manufacturer HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model / kip kip 3,000.0 ft-lbf 6,000.0 ft-lbf HYDRAULICS Pump Rate: gpm Pump Press: 2,50 SURVEY DATA (LAST 6) MUD GAS Avg Max Conn: Trip: Backgr: MD Incl Azi TVD N/-S E/-W VS DLS Build 8, , , , , , , , , , , , Serial No BIT RECORD IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R SECURITY DBS FX m423 5x10, 2x11 8, , BT-A D-I-NO-FM SECURITY DBS FX M423 5x10, 2x11 6, , CR-N D-I-CT-PR BIT OPERATING PARAMETERS TODAY Bit No Rot Hrs Cum Rot Hrs Prog Cum Prog ROP Cum ROP WOB min/max RPM min/max TFA P Drop Bit Noz Vel HHPSI , / / MUD DATA - M-I Engineer: Jimmy Martin MBT: 10.0 lbm/bbl Sample From: Out ph: 10.0 Mud Type: Time / MD: DouVis/Pac/Solt 23:00 / 8,790.0 Pm / Pom: Pf / Mf: 0.2 / 0.4 Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: 9.30 / / / 13 / / / / bbl 2.40 / Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: 72, / / 0 3 ppm 0 ppm 0.0 / 0.0 / VG Meter: 9@3 / 11@6 / 32@100 / 43@200 / 50@300 / 67@600 Comments: Drilled from 8664'' to 8794'' last 24 hrs. POOH for bit #4 per penetration rate. Presently TIH w/ new Bit. MUD PRODUCTS $2,473 $49,417 Product Units Qty Used ENGINEERING SERVICE EACH 2.00 Mi Wate (Barite) CAN,5 GA 9 POLYPAC R BG,50 LB 2.00 SODA ASH BG,50 LB 4.00 LAST OR CURRENT BHA BHA No: 5 Bit No: 5 MD In: 8,790.0 ft Purpose: DRILL VERTICAL 8.750" PRODUCTION HOLE MD Out: 9,405.0 ft Component OD ID Jts Length PDC BIT DH DYNAMICS RECORDER ROTARY STEERABLE MOTOR FLOAT SUB CROSSOVER POSITIVE DISPLACEMENT MOTOR DH DYNAMICS RECORDER NON-MAG INTEGRAL BLADE STABILIZ NON-MAG FLEX PONY COLLAR MWD TOOL NON-MAG INTEGRAL BLADE STABILIZ NON-MAG DRILL COLLAR CROSSOVER DRILL COLLAR Total Length: ft Wt below Jars: 19.0 kip DAILY COSTS (Top 15) Cost Description Vendor Amount Location & Roads + Maintenance M & P CONSTRUCTION CO., IN $126,055 Location & Roads + Maintenance BUTCH'S RAT HOLE & ANCHO $30,969 Rig Work HELMERICH & PAYNE IDC $25,000 Directional Drilling & LWD SCHLUMBERGER $24,680 Tax OXY PERMIAN $16,514 Bits, Reamers, Scrapers, HOs HALLIBURTON ENERGY SERV $10,000 Rental Downhole Eqpmnt & Tools NATIONAL OILWELL, INC. $6,450 Direct Supervision OXY PERMIAN $3,725 Drilling & Completion Fluids M-I $2,472 Miscellaneous Services KELLY'S PIPE INSPECTION, IN $1,862 Mud Logging WEATHERFORD INTERNATION $950 Eqpmnt Transportation Charges STEWART WELDING & MACHI $560 Drilling & Completion Fluids CATALYST CHEMICALS $507 Rental Surface Eqpmnt & Tools FAS-LINE SALES & RENTALS, $450 Rental Surface Eqpmnt & Tools MD TOTCO $377 3/25/2010 3:43:27PM Page 1 of 4

47 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/08/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 14 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS Operation Details 0:00 4: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 8,688' TO 8,723' ROTATED 35 FT, USING 558 GPM, 2200 PSI OFF BTM, 2450 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 32K WOB AND 3K TORQUE OFF BOTTOM AND 7K TORQUE ON BOTTOM. DRILLING WITH 36 MAGNETIC TOOLFACE WITH 50% STEERING RATIO ON POWER V TOOL. STEERING TOWARDS THE NORTHEAST. AT 8720' TOOK SURVEY AT 8637 WAS 1.53 DEG, DOWN LINK AT TOOL 180 GRAVITY TOOLFACE WITH 50% STEERING RATIO ON POWER V TOOL. STEERING STRAIGHT DOWN. TOTAL AVG ROP 8.75 FPH 100% LIMESTONE AT 8,700' SURVEY AT 8,637' 1.53 INC AZIMUTH BACKGROUND GAS: 5 UNITS. NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 2 PPB SOLTEX ). MUD WT IN PPG, 50 VIS, PH 10.0 WATERLOSS 7 CC MUD WT OUT PPG, 50 VIS, PH 10.0 WATERLOSS 7 CC 04:00 HOUR SAFETY BREAK - RUNNING THE AIR HOIST AT A SAFE SPEED WHEN PICKING UP OR LAYING DOWN LOADS. 4:00 6: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 8,723' TO 8,740' ROTATED 17 FT, USING 558 GPM, 2200 PSI OFF BTM, 2450 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 32-35K WOB AND 3K TORQUE OFF BOTTOM AND 7K TORQUE ON BOTTOM. AT 8720' TOOK SURVEY AT 8637' WAS 1.53 DEG, DOWN LINK TO TOOL 180 GRAVITY TOOLFACE WITH 50% STEERING RATIO ON POWER V TOOL. STEERING STRAIGHT DOWN. TOTAL AVG ROP 8.5 FPH 70% LIMESTONE, 30% GRAY SHALE AT 8,720' BACKGROUND GAS: 5 UNITS. NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 2 PPB SOLTEX ). MUD WT IN PPG, 58 VIS, PH 10.0 WATERLOSS 7 CC MUD WT OUT PPG, 58 VIS, PH 10.0 WATERLOSS 7 CC 6:00 10: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 8,740' TO 8,780' ROTATED 40 FT, USING 558 GPM, 2200 PSI OFF BTM, 2500 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 32K WOB AND 3K TORQUE OFF BOTTOM AND 4-6K TORQUE ON BOTTOM. 10:30 11: PRDR RIGMT SRVRIG P RIG SERVICE INCLINATION HOLD, LEFT AZIMUTH 25% TO STEER NORTH. 8,697' 1.83 INC AZIMUTH TOTAL AVG ROP 8.8 FPH 100% LIMESTONE AT 8,770' BACKGROUND GAS: 25 UNITS. NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 2 PPB SOLTEX ). MUD WT IN PPG, 58 VIS, PH 10.0 WATERLOSS 7 CC MUD WT OUT PPG, 58 VIS, PH 10.0 WATERLOSS 7 CC 08:00 HOURS SAFETY MEETING 15 MINS: DISCUSS THIRD PARTY PERSONNEL CLEANING AND DRIFTING PRODUCTION CASING. TALKED ABOUT THE ISSUE OF WALKING ON PIPE, MAKING SURE DSM REVIEWS JSA WITH CLEANING CREW. 3/25/2010 3:43:27PM Page 2 of 4

48 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/08/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 14 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 11:00 12: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 8,780' TO 8,790' ROTATED 10 FT, USING 558 GPM, 2200 PSI OFF BTM, 2500 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 32K WOB AND 3K TORQUE OFF BOTTOM AND 4-6K TORQUE ON BOTTOM. INCLINATION HOLD, LEFT AZIMUTH 25% TO STEER NORTH. TOTAL AVG ROP 7 FPH 100% LIMESTONE AT 8,770' BACKGROUND GAS: 25 UNITS. NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 2 PPB SOLTEX ). MUD WT IN PPG, 58 VIS, PH 10.0 WATERLOSS 7 CC MUD WT OUT PPG, 58 VIS, PH 10.0 WATERLOSS 7 CC NOTE: SCHLUMBERGER ANADRIL NOTIFIED DSM OF ISSUE ON HSPM 9.1 TOOLSCOPE PROGRAM WAS INDICATING NEGATIVE RPM (STICK/SLIP). ON SURFACE RPM WAS 30 AND DOWNHOLE COLLAR READING WAS RPM (180% STICK/SLIP). WITH SUCH HIGH STICK/SLIP POWER V WOULD NOT GET COMPLETE ROTATION AND THE TOOL WOULD NOT RESPOND TO THE COMMAND. SPECTROGRAM METER PROGRAM WAS READING DOWN HOLE NOISE AT THE BIT. WHEN EITHER A HEAT CHECKING ON THE BIT, UNDER GAUGE BIT, CHIPPED TEETH ON THE BIT OR RING OUT OF THE BIT, THIS WILL INDICATE STICK/SLIP HAS OCCURRED. THE SPT 3 PRESSURE PROGRAM SHOWED THAT THE PUMP PRESSURE WASN'T STABLE, IT WAS UP AND DOWN PSI. 12:00 HOURS SAFETY MEETING 15 MINS: REVIEW JSA WITH RIG CREW ON TRIPPING PIPE, HAND PLACEMENT AND PINCH POINTS. 12:30 13: PRDR CIRC CNDHOL P RECIPROCATE PIPE WHILE CIRCULATING BOTTOMS UP WITH 558 GPM. 13:00 13: PRDR TRIP DRILL P MONITOR WELL, WELL STATIC. PULL THREE STANDS FROM 8,790' TO 8,496' WITH ELEVATORS. HOLE IN GOOD SHAPE. PUMP SLUG. 13:30 16: PRDR TRIP DRILL P TRIP OUT OF HOLE FROM 8,496' TO 1,433' WITH PROPER HOLE FILL. 16:00 HOURS SAFETY MEETING 15 MINS: DISCUSS HAND PLACEMENT WHILE REMOVING ROTATING HEAD. GOOD COMMUNICATION WITH DRILLER AND RIG CREW. 16:00 16: PRDR TRIP DRILL P REMOVE ROTATING HEAD AND INSTALL TRIP NIPPLE. 16:30 18: PRDR TRIP DRILL P FINISH TRIPPING OUT OF HOLE FROM 1,433' TO SURFACE. LAYDOWN NMDC, IBS, MWD TOOL AND BREAK OUT BIT. GRADED BIT: CR - N - D - I - CT - PR. BIT CORED 1 1/2" INTO MATRIX IN CENTER OF BIT. 18:00 20: PRDR TRIP DRILL P PICK UP 8 3/4" BHA # 5 AS FOLLOW /4" SECURITY FX 75 JETTED WITH 2X11'S AND 5X10'S (TFA 0.569, 7 BLADED, 16 MM CUTTERS) 1 - BLACK BOX (NOV) 1 - POWER V 1 - FILTER SUB 1 - NM CROSSOVER 1 - MUDMOTOR.29 REV/GAL 1 - BLACKBOX (NOV) 1 - NM IBS (1/4" UG) 1 - NM SUB (PIN X PIN) 1 - SCHLUMBERGER SLIM PULSE MWD TOOL 1 - NM IBS (1/4" UG) 1 - NMDC 1 - CROSSOVER (TEST MWD TOOLS - OK) 3-6 1/2" SPIRAL DC'S 1 - DRILLING JARS (TO BE RUN IN COMPRESSION) 7-6 1/2" SPIRAL DC'S 1 - CROSSOVER 17-5" HWDP BHA WEIGHTS: 3-6 1/2" DC + JARS = 19k 3-6 1/2" DC + JARS /2" DC = 38k TOTAL BHA = 54k (17 JTS 5" HWT DP ON TOP OF DC's) 3/25/2010 3:43:27PM Page 3 of 4

49 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/08/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 14 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 20:00 23: PRDR TRIP DRILL P TRIP IN HOLE FROM 974' TO 7120'. TAG UP WITH 30k AT 7120'. 20:00 HOUR SAFETY BREAK - STAYING FOCUSED TO THE JOB ON HAND. 23:30 0: PRDR REAM RMTGT PT PICK UP, PIPE STUCK (PULLED 50k OVER). SCREW IN TOP DRIVE AND ATTEMPT TO CIRCULATE WITH NO SUCCESS. ROTATE STRING AT 30 RPM WITH 9 TO 12k TORQUE AND SLOWLY BRING ON PUMPS. STRING STARTED TO CIRCULATE AND WORK FREE. WORK TIGHT AREA FROM 7120' TO 7183' AT 585 GPM SEVERAL TIMES UNTIL NO RESISTANCE SEEN. NOTE: THIS SECTION OF HOLE HAS A 6.20 DEG AT 7,101' THEN 6.01 DEG AT 7194' WITH BOTH DEPTHS HAVING 100% DOLOMITE AS PER MUD LOGGER LOG. Total Time Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. Other Remarks: N N Days since Last RI: Days since Last LTA: 00:00 HOUR SAFETY BREAK - WASHING, REAMING AND WORKING STUCK PIPE IN TIGHT SECTIONS OF HOLE Weather Comments: FROM ODESSA GO WEST ON HWY MILES TO FM 181 TURN NORTH ON 181 GO MILES TO CATTLE GUARD #11 TURN EAST ONTO LEASE ROAD (H&P 370 SIGN), GO 1.2 MILES THEN SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 102 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY : TRIPPING DRILL STRING, LAYING DOWN MUD MOTORS AND DOWN LOADING BLACK BOXES. ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 622 DAYS SINCE LAST RECORDABLE: 176 TOTAL JSA REVIEWED: 20 TOTAL STOP CARDS: 48 TOTAL PRE-OP SAFETY MEETINGS: 8 TOTAL LO/TO: 0 TOTAL PERMITS TO WORK: 0 BEST STOP CARD OF THE DAY: THIRD PARTY PERSON NOT USING 3 POINT CONTACT WHEN GOING UP & DOWN STAIRS. PERSON WAS STOPPED AND EXPLAIN WHAT THE POLICY IS FOR THE THREE POINT CONTACT WITH THE HAND RAILS ARE. 3/25/2010 3:43:27PM Page 4 of 4

50 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/09/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 15 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: Engineer: 00 / 0 ft Rig: 9,405.0 ft Progress: 8,790.0 ft Rot Hrs Today: Avg ROP Today: DEVONIAN@9,100.0 H&P ft hr 36.2 ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: $91,530 $1,601,434 $2,655,407 Lithology: 20% CHERT, 70% LIMESTONE AND 10% SHALE AT 9,380' TRIPPING IN THE HOLE WITH BHA # 6 (SCHLUMBERGER POWER V TOOL) AT 2,196'. TRIP IN HOLE, DRILL 8.750" VERTICAL PRODUCTION HOLE FROM 8,790' TO 9,405', CIRCULATE. PULL OUT OF HOLE FOR INSERT BIT DUE PULL OUT OF HOLE, CHANGE POWER V & BIT, TRIP IN HOLE, DRILL 8.750" VERTICAL PRODUCTION HOLE TO +/- 9800', CIRCULATE, PUL CASING/WELL CONTROL PERSONNEL GILBERT ZAPATA MIKE SPRINGER JUAN SIERRA 3,855ft 9,698ft 02/02/2010 FIT / ppg Geologist: Oxy Personnel: 2 Contractor Personnel: 15 Total on Site: 17 Bit No Size Manufacturer HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model / kip kip 3,000.0 ft-lbf 8,000.0 ft-lbf HYDRAULICS Pump Rate: gpm Pump Press: 2,70 SURVEY DATA (LAST 6) MUD GAS Avg Max Conn: Trip: Backgr: MD Incl Azi TVD N/-S E/-W VS DLS Build 9, , , , , , , , , , , , Serial No BIT RECORD IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R SECURITY DBS FX m423 5x10, 2x11 8, , BT-A D-I-NO-FM SECURITY DBS FX M423 5x10, 2x11 6, , CR-N D-I-CT-PR BIT OPERATING PARAMETERS TODAY Bit No Rot Hrs Cum Rot Hrs Prog Cum Prog ROP Cum ROP WOB min/max RPM min/max TFA P Drop Bit Noz Vel HHPSI / / MUD DATA - M-I Engineer: Saad Maraqa MBT: 10.0 lbm/bbl Sample From: In ph: 9.5 Mud Type: Time / MD: DouVis/Pac/Solt 23:00 / 9,405.0 Pm / Pom: Pf / Mf: 0.0 / 0.4 Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: 9.50 / / 24 9 / 13 / / / 0.0 / bbl 2.50 / Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: 94, / / 0 0 ppm 0 ppm 0.0 / 0.0 / VG Meter: 8@3 / 9@6 / 25@100 / 33@200 / 40@300 / 56@600 Comments: Drilling ahead with no hole problems. MW9.5 ppg 52 visc 6 W.L. MUD PRODUCTS $23,936 $73,354 Product Units Qty Used BLACK FURRY UNIT 1.00 DUO-VIS BG,25 LB ENGINEERING SERVICE EACH 2.00 G-SEAL PLUS BG,25 KG LIME BG,50 LB 9.00 MYACIDE GA25 CAN,5 GA 3.00 PECAN NUT PLUG MEDIUM BG,50 LB POLYPAC R BG,50 LB 8.00 SHRINK WRAPPING EACH 4.00 SODA ASH BG,50 LB 3.00 SOLTEX BG,50 LB 5 LAST OR CURRENT BHA BHA No: 5 Bit No: 5 MD In: 8,790.0 ft Purpose: DRILL VERTICAL 8.750" PRODUCTION HOLE MD Out: 9,405.0 ft Component OD ID Jts Length PDC BIT DH DYNAMICS RECORDER ROTARY STEERABLE MOTOR FLOAT SUB CROSSOVER POSITIVE DISPLACEMENT MOTOR DH DYNAMICS RECORDER NON-MAG INTEGRAL BLADE STABILIZ NON-MAG FLEX PONY COLLAR MWD TOOL NON-MAG INTEGRAL BLADE STABILIZ NON-MAG DRILL COLLAR CROSSOVER DRILL COLLAR Total Length: ft Wt below Jars: 19.0 kip DAILY COSTS (Top 15) Cost Description Vendor Amount Rig Work HELMERICH & PAYNE IDC $25,000 Drilling & Completion Fluids M-I $23,936 Directional Drilling & LWD SCHLUMBERGER $20,180 Rental Downhole Eqpmnt & Tools NATIONAL OILWELL, INC. $6,450 Tax OXY PERMIAN $5,988 Direct Supervision OXY PERMIAN $3,725 Drilling & Completion Fluids MUSSLEWHITE TRUCKING $1,258 Mud Logging WEATHERFORD INTERNATION $950 Elec., Water, Sewer, Trash B & L SATELLITE RENTALS $600 Rental Surface Eqpmnt & Tools FAS-LINE SALES & RENTALS, $450 Rental Surface Eqpmnt & Tools MD TOTCO $377 Rental Surface Eqpmnt & Tools M-I $375 Drilling & Completion Fluids MUSSLEWHITE TRUCKING $373 Rental Downhole Eqpmnt & Tools SMITH INTERNATIONAL, INC. $265 Rig Move HELMERICH & PAYNE IDC $257 3/25/2010 3:43:38PM Page 1 of 5

51 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/09/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 15 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS Operation Details 0:00 1: PRDR TRIP DRILL P FINISH TRIPPING IN HOLE FROM 7183' TO 8697' WITH NO PROBLEMS. WASH LAST STAND FROM 8697' TO 8790' (93') WITH NO FILL. CIRCULATE WHILE SCHLUMBERGER DOWN LOAD LINKS TO POWER V TOOL (APPOX 15 MINS). 1:00 4: PRDR DRILL MTRVER P ADD WEIGHT IN 1-2k INCREMENTS OVER 5 MINUTES IN ORDER TO DRILL UP CENTER OF FORMATION POINT LEFT BY PREVIOUS CORED BIT. DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 8,790' TO 8,874' ROTATED 84 FT, USING 558 GPM, 2200 PSI OFF BTM, 2550 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 10-25K WOB AND 3K TORQUE OFF BOTTOM AND 4-6K TORQUE ON BOTTOM. DOWN LINK TO TOOL 180 GRAVITY TOOLFACE WITH 50% STEERING RATIO ON POWER V TOOL. STEERING STRAIGHT DOWN. TOTAL AVG ROP 28 FPH 50% LIMESTONE, 50% SHALE AT 8,830' BACKGROUND GAS: 25 UNITS. BOTTOMS UP GAS 70 UNITS. NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 2 PPB SOLTEX ). MUD WT IN PPG, 58 VIS, PH 10.0 WATERLOSS 7 CC MUD WT OUT PPG, 58 VIS, PH 10.0 WATERLOSS 7 CC 04:00 HOUR SAFETY BREAK - WORKING AND TRANSFERING MUD AROUND IN MUD PITS. 4:00 6: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 8,874' TO 9,011' ROTATED 137 FT, USING 500 GPM, 2100 PSI OFF BTM, 2500 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 15-20K WOB AND 3K TORQUE OFF BOTTOM AND 4-6K TORQUE ON BOTTOM. DOWN LINK TO TOOL 180 GRAVITY TOOLFACE WITH 50% STEERING RATIO ON POWER V TOOL. STEERING STRAIGHT DOWN. SURVEY AT 8,791' 1.03 INC AZIMUTH TOTAL AVG ROP 68.5 FPH 100% SHALY LIMESTONE AT 8,873'. 100% SHALE AT 8890'. BACKGROUND GAS: UNITS WITH CONNECTION AT 100 UNITS. NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 2 PPB SOLTEX ). MUD WT IN PPG, 59 VIS, PH 10.0 WATERLOSS 7 CC MUD WT OUT PPG, 59 VIS, PH 10.0 WATERLOSS 7 CC 6:00 10: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 9,011' TO 9,203' ROTATED 192 FT, USING 500 GPM, 2100 PSI OFF BTM, 2500 PSI ON BOTTOM, 30 SRPM MRPM = 175 BRPM, 15-20K WOB AND 3K TORQUE OFF BOTTOM AND 5-8K TORQUE ON BOTTOM. DOWN LINK TO TOOL 180 GRAVITY TOOLFACE WITH 50% STEERING RATIO ON POWER V TOOL. STEERING STRAIGHT DOWN. SURVEY AT 8,980' 0.89 INC AZIMUTH TOTAL AVG ROP 43 FPH 60% SHALE AND 40% LIMESTONE AT 9, % SHALEY LIMESTONE AT 9,130' BACKGROUND GAS: UNITS NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 2 PPB SOLTEX ). MUD WT IN PPG, 55 VIS, PH 10.0 WATERLOSS 7 CC MUD WT OUT PPG, 55 VIS, PH 10.0 WATERLOSS 7 CC 08:00 SAFETY MEETING 15 MINS = DISCUSS PROPER CLOTHING FOR UP COMING COLD WEATHER. 3/25/2010 3:43:38PM Page 2 of 5

52 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/09/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 15 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 10:30 12: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 9,203' TO 9,260' ROTATED 57 FT, USING 522 GPM, 2100 PSI OFF BTM, 2550 PSI ON BOTTOM, 30 SRPM MRPM = 181 BRPM, 28K WOB AND 3K TORQUE OFF BOTTOM AND 5-8K TORQUE ON BOTTOM. INCREASE GPM TO INCREASE PAD PRESSURE. DRILLING WITH 180 GRAVITY TOOLFACE WITH 100% STEERING RATIO ON POWER V TOOL. STEERING STRAIGHT DOWN. SURVEY AT 9,169' 2.37 INC AZIMUTH TOTAL AVG ROP 29 FPH 100% LIMESTONE AT 9,200' BACKGROUND GAS: UNITS NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 2 PPB SOLTEX ). MUD WT IN PPG, 50 VIS, PH 10.0 WATERLOSS 7 CC MUD WT OUT PPG, 50 VIS, PH 10.0 WATERLOSS 7 CC 12:00 HOURS SAFETY MEETING 15 MINS = FORKLIFT OPERATIONS WHEN HANDLING TUBULARS AND DOWN HOLE TOOLS. 12:30 13: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 9,260' TO 9,280' ROTATED 20 FT, USING 544 GPM, 2150 PSI OFF BTM, 2650 PSI ON BOTTOM, 30 SRPM MRPM = 187 BRPM, 28K WOB AND 3K TORQUE OFF BOTTOM AND 5-8K TORQUE ON BOTTOM. INCREASE GPM TO INCREASE PAD PRESSURE. DRILLING WITH 180 GRAVITY TOOLFACE WITH 100% STEERING RATIO ON POWER V TOOL. STEERING STRAIGHT DOWN. SURVEY AT 9,263' 3.54 INC AZIMUTH TOTAL AVG ROP 40 FPH 100% LIMESTONE WITH SLIGHT TRACE CHERT AT 9,280' 13:00 14: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 9,280' TO 9,346' ROTATED 66 FT, USING 562 GPM, 2200 PSI OFF BTM, 2700 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 28K WOB AND 3K TORQUE OFF BOTTOM AND 5-8K TORQUE ON BOTTOM. 14:30 15: PRDR RIGMT SRVRIG P RIG SERVICE. INCREASE GPM TO INCREASE PAD PRESSURE TO 800 PSI MAXED OUT ON POWER V. DRILLING WITH 180 GRAVITY TOOLFACE WITH 100% STEERING RATIO ON POWER V TOOL. STEERING STRAIGHT DOWN. TOTAL AVG ROP 44 FPH 60% SHALE AND 40% LIMESTONE AT 9,340' BACKGROUND GAS: UNITS NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 2 PPB SOLTEX ). MUD WT IN PPG, 50 VIS, PH 10.0 WATERLOSS 7 CC MUD WT OUT PPG, 50 VIS, PH 10.0 WATERLOSS 7 CC 16:00 HOURS SAFETY MEETING 15 MINS = DISCUSS PINCH POINTS WHILE ROLLING AND STRAPPING CASING. 3/25/2010 3:43:38PM Page 3 of 5

53 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/09/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 15 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 15:00 18: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 9,346' TO 9,397' ROTATED 51 FT, USING 562 GPM, 2200 PSI OFF BTM, 2700 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 18-25K WOB AND 3K TORQUE OFF BOTTOM AND 5-8K TORQUE ON BOTTOM. INCREASE GPM TO INCREASE PAD PRESSURE TO 800 PSI MAXED OUT ON POWER V. DRILLING WITH 180 GRAVITY TOOLFACE WITH 100% STEERING RATIO ON POWER V TOOL. STEERING STRAIGHT DOWN. TOTAL AVG ROP 17 FPH 20% SHALE AND 80% LIMESTONE AT 9,360' 20% CHERT, 70% LIMESTONE AND 10% SHALE AT 9,380' BACKGROUND GAS: UNITS NOTE: POWER V HAVING DIFFICULTY DROPPING ANGLE DESPITE INCREASING STEERING TO 180 DEGREE TOOLFACE AND 100% STEERING RATIO. CREW CHANGE. 18:00 18: PRDR DRILL MTRDIR P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 9,397' TO 9,405' ROTATED 8 FT, USING 562 GPM, 2200 PSI OFF BTM, 2700 PSI ON BOTTOM, 30 SRPM MRPM = 192 BRPM, 18-25K WOB AND 3K TORQUE OFF BOTTOM AND 5-8K TORQUE ON BOTTOM. INCREASE GPM TO INCREASE PAD PRESSURE TO 800 PSI MAXED OUT ON POWER V. DRILLING WITH 180 GRAVITY TOOLFACE WITH 100% STEERING RATIO ON POWER V TOOL. STEERING STRAIGHT DOWN. TOTAL AVG ROP 16 FPH 20% SHALE AND 80% LIMESTONE AT 9,360' 20% CHERT, 70% LIMESTONE AND 10% SHALE AT 9,380' BACKGROUND GAS: UNITS NOTE: POWER V HAVING DIFFICULTY DROPPING ANGLE DESPITE INCREASING STEERING TO 180 DEGREE TOOLFACE AND 100% STEERING RATIO. DECISION WAS MADE TO PULL OUT OF HOLE FOR INSERT BIT DUE TO CHERT FORMATION AND CHANGE POWER V TOOL. 18:30 20: PRDR CIRC CNDHOL P CIRCULATE AT 562 GPM PSI AND CONDITION MUD FOR TRIP OUT. FLOW CHECK, WELL STATIC. 20:00 HOUR SAFETY BREAK - PINCH POINTS ON RIG FLOOR TONGS. 20:00 21: PRDR TRIP DRILL P PULL OUT OF HOLE 4 STDS NO DRAG SEEN. PUMP SLUG AND CONTINUE PULLING OUT OF HOLE. TAG AT 8123'. 21:00 21: PRDR REAM RMTGT PT ATTEMPT TO WORK OUT THROUGH TIGHT SPOT WITH NO SUCCESS. PUMP AT 540 GPM WITH NO SUCCESS. BACK REAM AT 30 RPM MOTOR 157 RPM TOTAL 187 RPM, 540 GPM AND PULL 1 FT/MIN. TAKING 1-2K BACK WEIGHT RESISTANCE. REAM FROM 8240' TO 8125' (115') SEVERAL TIMES UNTIL RESISTANCE IS GONE. 21:30 0: PRDR TRIP DRILL P CONTINUE TO TRIP OUT OF HOLE FROM 8125' TO 3370' WITH NO PROBLEMS PULLING OUT OR ENTERING CASING. HOLE TAKING PROPER MUD DISPLACEMENT. Total Time Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. N N Days since Last RI: Days since Last LTA: 00:00 HOUR SAFETY BREAK - REMOVING AND INSTALLING ROTATING HEAD Weather Comments: /25/2010 3:43:38PM Page 4 of 5

54 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/09/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 15 Other Remarks: FROM ODESSA GO WEST ON HWY MILES TO FM 181 TURN NORTH ON 181 GO MILES TO CATTLE GUARD #11 TURN EAST ONTO LEASE ROAD (H&P 370 SIGN), GO 1.2 MILES THEN SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 102 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY : FORKLIFT OPERATIONS AND SAFETY OPERATIONS THAT ARE TO BE FOLLOWED. ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 623 DAYS SINCE LAST RECORDABLE: 177 TOTAL JSA REVIEWED: 18 TOTAL STOP CARDS: 48 TOTAL PRE-OP SAFETY MEETINGS: 8 TOTAL LO/TO: 0 TOTAL PERMITS TO WORK: 0 BEST STOP CARD OF THE DAY: THIRD PARTY CAME TO WORK AND DID NOT HAVE H2S MONITOR PPE. EXPLAINED HAD TO HAVE ONE, ONE WAS BROUGHT FROM HIS YARD IN MIDLAND. 3/25/2010 3:43:38PM Page 5 of 5

55 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/10/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 16 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: Engineer: 00 / 0 ft Rig: 9,515.0 ft Progress: 9,405.0 ft Rot Hrs Today: Avg ROP Today: DEVONIAN@ H&P ft 1 hr 11.0 ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: $93,428 $1,694,862 $2,655,407 Lithology: 100% LIMEY 9545' DRILLING 8 3/4" VERTICAL PRODUCTION HOLE AT 9,559'. ROP 7.9' HOUR. PULL OUT OF HOLE, CHANGE BHA (POWER V & BIT), TRIP IN HOLE TO 8156', SAFETY REAM 8156' TO 8250' & 8600' TO 8694', TRIP IN HOL DRILL 8.750" VERTICAL PRODUCTION HOLE WITH SCHLUMBERGER POWER V. CASING/WELL CONTROL PERSONNEL CHAD FRAZIER MIKE SPRINGER JUAN SIERRA 3,855ft 9,698ft 02/02/2010 FIT / ppg Geologist: Oxy Personnel: 2 Contractor Personnel: 14 Total on Site: 16 Bit No Size Manufacturer HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model / kip kip 2,000.0 ft-lbf 4,000.0 ft-lbf HYDRAULICS Pump Rate: gpm Pump Press: 2,25 SURVEY DATA (LAST 6) MUD GAS Avg Max Conn: Trip: Backgr: MD Incl Azi TVD N/-S E/-W VS DLS Build 9, , , , , , , , , , , , Serial No BIT RECORD IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R SMITH FHI37HYV PP Y 1x18, 1x14, 1x12 9, , WT-A E-I-WT-TD SECURITY DBS FX m423 5x10, 2x11 8, , BT-A D-I-NO-FM BIT OPERATING PARAMETERS TODAY Bit No Rot Hrs Cum Rot Hrs Prog Cum Prog ROP Cum ROP WOB min/max RPM min/max TFA P Drop Bit Noz Vel HHPSI / / MUD DATA - M-I Engineer: Saad Maraqa MBT: 10.0 lbm/bbl Sample From: In ph: 10.0 Mud Type: Time / MD: DouVis/Pac/Solt 23:00 / 9,491.0 Pm / Pom: Pf / Mf: 0.0 / 0.5 Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: 9.50 / / 27 9 / 12 / / / 0.0 / bbl 2.80 / Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: 90, / / 0 ppm 0.0 / 0.0 / VG Meter:?@300 /?@600 Comments: Drilling ahead w/ both pumps on hole at 11.9''/hr. 4 PPb of soltex and 2 % black F. in active system. MUD PRODUCTS $13,981 $87,334 Product Units Qty Used DUO-VIS BG,25 LB ENGINEERING SERVICE EACH 2.00 LIME BG,50 LB 6.00 Mi Wate (Barite) CAN,5 GA 12 SALT 96% BG,50 LB 2.00 SOLTEX BG,50 LB LAST OR CURRENT BHA BHA No: 6 Bit No: 6 MD In: 9,405.0 ft Purpose: DRILL VERTICAL 8.750" PRODUCTION HOLE MD Out: 9,712.0 ft Component OD ID Jts Length TRI-CONE BIT DH DYNAMICS RECORDER ROTARY STEERABLE MOTOR FLOAT SUB CROSSOVER POSITIVE DISPLACEMENT MOTOR DH DYNAMICS RECORDER NON-MAG INTEGRAL BLADE STABILIZ NON-MAG FLEX PONY COLLAR MWD TOOL NON-MAG INTEGRAL BLADE STABILIZ NON-MAG DRILL COLLAR CROSSOVER DRILL COLLAR Total Length: ft Wt below Jars: 19.0 kip DAILY COSTS (Top 15) Cost Description Vendor Amount Rig Work HELMERICH & PAYNE IDC $25,000 Directional Drilling & LWD SCHLUMBERGER $20,180 Drilling & Completion Fluids M-I $13,979 Bits, Reamers, Scrapers, HOs SMITH INTERNATIONAL, INC. $10,127 Rental Downhole Eqpmnt & Tools NATIONAL OILWELL, INC. $6,450 Tax OXY PERMIAN $6,112 Miscellaneous Supplies BRANDT $3,870 Direct Supervision OXY PERMIAN $3,725 Mud Logging WEATHERFORD INTERNATION $950 Rental Surface Eqpmnt & Tools FAS-LINE SALES & RENTALS, $450 Rental Surface Eqpmnt & Tools MD TOTCO $377 Rental Surface Eqpmnt & Tools M-I $375 Rental Downhole Eqpmnt & Tools SMITH INTERNATIONAL, INC. $265 Rig Move HELMERICH & PAYNE IDC $257 Miscellaneous Services B & L SATELLITE RENTALS $175 3/25/2010 3:43:49PM Page 1 of 4

56 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/10/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 16 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS Operation Details 0:00 2: PRDR TRIP DRILL P CONTINUE TO TRIP OUT OF HOLE FROM 3370' TO SURFACE WITH NO PROBLEMS PULLING OUT. HOLE TAKING PROPER MUD DISPLACEMENT. 2:00 3: PRDR TRIP DRILL P PICK UP JT DRILL PIPE AND TEST POWER V. POWER V WORKING CORRECTLY. LAY DOWN POWER V, BIT AND BLACK BOX. BIT GRADE: 1-1-BT-A-D-I-NO-FM (ONE TOOTH BROKEN IN NOSE AREA) 3:00 5: PRDR TRIP DRILL P PICK UP 8 3/4" BHA # 6 AS FOLLOW: 1-8 3/4" SMITH TRI CONE FHI37HYV JETTED WITH 1X12, 1X14, 1X18 (TFA 0.509) 1 - BLACK BOX (NOV) 1 - POWER V (TESTED BEFORE TRIP IN HOLE) 1 - FILTER SUB 1 - NM CROSSOVER 1 - MUDMOTOR.29 REV/GAL 1 - BLACKBOX (NOV) 1 - NM IBS (1/4" UG) 1 - NM SUB (PIN X PIN) 1 - SCHLUMBERGER SLIM PULSE MWD TOOL 1 - NM IBS (1/4" UG) 1 - NMDC 1 - CROSSOVER (TEST MWD TOOLS - OK) 3-6 1/2" SPIRAL DC'S 1 - DRILLING JARS (TO BE RUN IN COMPRESSION WHEN OVER 19k) 7-6 1/2" SPIRAL DC'S 1 - CROSSOVER 17-5" HWDP TEST DOWN LINK POWER V AT 980'. DOWN LINK WILL NOT TEST AT SURFACE, IT HAS TO BE AT +/- 1000'. BHA WEIGHTS: 3-6 1/2" DC + JARS = 19k 3-6 1/2" DC + JARS /2" DC = 38k TOTAL BHA = 54k (17 JTS 5" HWT DP ON TOP OF DC's) 04:00 HOUR SAFETY BREAK - WORKING WITH THIRD PARTY TRUCK DRIVERS ON MEET AND GREET, LOCATION SPEEDS AND SAFETY PPE. 5:00 6: PRDR TRIP DRILL P CONTINUE TO TRIP IN HOLE FROM 980' TO 2,196'. CREW CHANGE 6:00 7: PRDR TRIP DRILL P TRIP IN THE HOLE FROM 2,196' TO 3,855' WITH PROPER HOLE DISPLACEMENT. 7:00 7: PRDR TRIP CWD P REMOVE TRIP NIPPLE AND INSTALL ROTATING HEAD. 7:30 9: PRDR TRIP DRILL P TRIP IN THE HOLE FROM 3,855' TO 8,156' WITH PROPER HOLE DISPLACEMENT. 08:00 HOUR SAFETY BREAK - THE SAFE RUNNING OF THE ST 80. 9:30 10: PRDR CIRC CNDHOL P BREAK CIRCULATION, WASH AND REAM FROM 8,156' TO 8,250' WITH 500 GPM AND 2100 PSI. CIRCULATED BOTTOMS UP WITH MINIMAL CUTTINGS OF COFFEE GROUND SHALE. REAMING KREVS NOTE: SECTION OF HOLE WHERE PULLING TIGHT ON PULLING OUT OF HOLE FOR BIT. 10:30 11: PRDR TRIP DRILL P TRIP IN THE HOLE FROM 8,250' TO 8,600' WITH PROPER HOLE DISPLACEMENT. 11:00 11: PRDR CIRC CNDHOL P BREAK CIRCULATION. WASH AND REAM FROM 8,600' TO 8,694' WITH 500 GPM AND 2100 PSI. CIRCULATED BOTTOMS UP WITH MINIMAL CUTTINGS OF 1/4" GREEN SHALE AND RED SHALE, COFFEE GROUND CUTTINGS OF LIMESTONE AND CHERT. TOTAL REAMING KREVS NOTE: NELSON EMERY (OXY SUPERINTENDENT) & JAMES TURNER (H&P SUPERINTENDENT) ON LOCATION FOR RIG VISIT. 11:30 12: PRDR TRIP DRILL P TRIP IN THE HOLE FROM 8,694' TO 9,346' WITH PROPER HOLE DISPLACEMENT. 12:00 HOUR SAFETY BREAK - THE RUNNING OF THE PIPE WRANGLER. 12:30 13: PRDR REAM PRRM P SAFETY WASH AND REAM FROM 9,346' TO 9,405' (59') WITH 9' OF FILL. 13:00 13: PRDR CIRC CNDHOL P TAKE SURVEY AND CIRCULATE BOTTOMS UP. NO CHANGE IN CUTTING SIZE OR VOLUME. 3/25/2010 3:43:49PM Page 2 of 4

57 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/10/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 16 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 13:30 17: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 9,405' TO 9,440' ROTATED 35 FT, USING 500 GPM, 2100 PSI OFF BTM, 2200 PSI ON BOTTOM, 17 SRPM MRPM = 162 BRPM, 35K WOB AND 2K TORQUE OFF BOTTOM AND 3-4K TORQUE ON BOTTOM. DRILLING WITH 180 GRAVITY TOOLFACE WITH 100% STEERING RATIO ON POWER V TOOL. STEERING STRAIGHT DOWN. SURVEY AT 9,359' INC AZIMUTH SURVEY AT 9,386' INC AZIMUTH TOTAL AVG ROP 10 FPH 17:00 17: PRDR RIGMT SRVRIG P SERVICE RIG. BACKGROUND GAS: UNITS NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 4 PPB SOLTEX ). MUD WT IN PPG, 49 VIS, PH 10.0 WATERLOSS 7 CC MUD WT OUT PPG, 49 VIS, PH 10.0 WATERLOSS 7 CC 16:00 HOUR SAFETY BREAK - MOVING OF EQUIPMENT, MUD PRODUCTS AND SLINGS WITH FORKLIFT IN A SAFE MANNER. 17:30 22: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 9,440' TO 9,490' ROTATED 50 FT, USING 500 GPM, 2100 PSI OFF BTM, 2250 PSI ON BOTTOM, 17 SRPM MRPM = 162 BRPM, 35K WOB AND 2K TORQUE OFF BOTTOM AND 3-4K TORQUE ON BOTTOM. DRILLING WITH 180 GRAVITY TOOLFACE WITH 100% STEERING RATIO ON POWER V TOOL. STEERING STRAIGHT DOWN. TOTAL AVG ROP 11.1 FPH BACKGROUND GAS: UNITS NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 4 PPB SOLTEX ). MUD WT IN PPG, 49 VIS, PH 10.0 WATERLOSS 7 CC MUD WT OUT PPG, 49 VIS, PH 10.0 WATERLOSS 7 CC 20:00 HOUR SAFETY BREAK - CLEAN UP BETWEEN RIG PITS AND PARTS HOUSE OF THE BLACK FURY AND SOLTEX THAT WAS SPILL. 22:00 0: PRDR DRILL MTRVER P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 9,490' TO 9,515' ROTATED 25 FT, USING 500 GPM, 2100 PSI OFF BTM, 2250 PSI ON BOTTOM, 17 SRPM MRPM = 162 BRPM, 35K WOB AND 2K TORQUE OFF BOTTOM AND 3-4K TORQUE ON BOTTOM. DRILLING WITH 180 GRAVITY TOOLFACE WITH 100% STEERING RATIO ON POWER V TOOL. STEERING STRAIGHT DOWN. TOTAL AVG ROP 12.5 FPH KREVS (97,200 REVS) TOTAL REAM KREVS (14,600 REVS) BACKGROUND GAS: UNITS NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 4 PPB SOLTEX ). MUD WT IN PPG, 51 VIS, PH 10.0 WATERLOSS 7 CC MUD WT OUT PPG, 51 VIS, PH 10.0 WATERLOSS 7 CC Total Time Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. N N Days since Last RI: Days since Last LTA: 00:00 HOUR SAFETY BREAK - WEATHER OF THE SNOW AND SLEET FALLING CAUSING VERY SLIPPERY CONDITIONS AT RIG. THREE POINT CONTACTS NEEDED DUE TO WEATHER CONDITIONS Weather Comments: /25/2010 3:43:49PM Page 3 of 4

58 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/10/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 16 Other Remarks: FROM ODESSA GO WEST ON HWY MILES TO FM 181 TURN NORTH ON 181 GO MILES TO CATTLE GUARD #11 TURN EAST ONTO LEASE ROAD (H&P 370 SIGN), GO 1.2 MILES THEN SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 102 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY : GENERAL HOUSE KEEPING, FORKLIFT OPERATIONS, AND THE WEATHER CONDITIONS WITH THE SNOW AND SLEET. ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 624 DAYS SINCE LAST RECORDABLE: 178 TOTAL JSA REVIEWED: 16 TOTAL STOP CARDS: 44 TOTAL PRE-OP SAFETY MEETINGS: 8 TOTAL LO/TO: 0 TOTAL PERMITS TO WORK: 0 BEST STOP CARD OF THE DAY: OBSERVED H&P EMPLOYEE PULLING SLIPS WITH HAND IN INCORRECT POSITION. STOP JOB AND EXPLAINED TO GRAB SLIPS PLAM UP AND THUMB OUT TO PREVENT INJURY 3/25/2010 3:43:49PM Page 4 of 4

59 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/11/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 17 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: Engineer: 00 / 0 ft Rig: 9,712.0 ft Progress: 9,515.0 ft Rot Hrs Today: Avg ROP Today: DEVONIAN@9,100.0 H&P ft hr 10.4 ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: $80,713 $1,775,575 $2,655,407 Lithology: 30% LIME 70% SHALE RUNNING IN HOLE WITH FIRST E-LOG RUN, FMI, HRLA, PEX, HNGS DRILL 8.750" VERTICAL PRODUCTION HOLE FROM 9515' TO 9712' TD, POOH FOR LOGS E LOG WELL, RIH WITH DRILL STRING, LAY DOWN DRILL STRING, RUN & CEMENT 5.5" CASING. CASING/WELL CONTROL PERSONNEL CHAD FRAZIER DANNY AUSTIN JUAN SIERRA 3,855ft 9,698ft 02/02/2010 FIT / ppg Geologist: Oxy Personnel: 2 Contractor Personnel: 14 Total on Site: 16 Bit No Size Manufacturer HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model / kip kip 2,000.0 ft-lbf 4,000.0 ft-lbf HYDRAULICS Pump Rate: gpm Pump Press: 2,25 SURVEY DATA (LAST 6) MUD GAS Avg Max Conn: Trip: Backgr: MD Incl Azi TVD N/-S E/-W VS DLS Build 9, , , , , , , , , , , , Serial No BIT RECORD IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R SMITH FHI37HYV PP Y 1x18, 1x14, 1x12 9, , WT-A E-I-WT-TD SECURITY DBS FX m423 5x10, 2x11 8, , BT-A D-I-NO-FM BIT OPERATING PARAMETERS TODAY Bit No Rot Hrs Cum Rot Hrs Prog Cum Prog ROP Cum ROP WOB min/max RPM min/max TFA P Drop Bit Noz Vel HHPSI / / , MUD DATA - M-I Engineer: Saad Maraqa MBT: Sample From: In ph: Mud Type: Time / MD: DouVis/Pac/Solt 22:00 / 9,712.0 Pm / Pom: Pf / Mf: Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: 9.60 / / 25 8 / 12 / / / / bbl 3.10 / Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: 0 ppm 0.0 / 0.0 / VG Meter: 6@3 / 9@6 / 21@100 / 27@200 / 38@300 / 51@600 Comments: DISPLACED 80BBL of 30PPB LCM PILL (10PPB NUT PLUG M 5 PPB G-SEAL 5PPB MIX II C 5PPB SAFECARB 2 AND 5PPB SAFECARB 250). MUD PRODUCTS 10.0 lbm/bbl / , / / 0 1 ppm $4,902 $92,236 Product Units Qty Used DUO-VIS BG,25 LB 4.00 ENGINEERING SERVICE EACH 2.00 G-SEAL PLUS BG,25 KG M-I-X II COARSE BG,25 LB 8.00 POLYPAC R BG,50 LB 2.00 SAFE-CARB 20 BG,50 LB 8.00 SAFE-CARB 40 BG,50 LB 8.00 SODA ASH BG,50 LB 3.00 SOLTEX BG,50 LB 4.00 LAST OR CURRENT BHA BHA No: 6 Bit No: 6 MD In: 9,405.0 ft Purpose: DRILL VERTICAL 8.750" PRODUCTION HOLE MD Out: 9,712.0 ft Component OD ID Jts Length TRI-CONE BIT DH DYNAMICS RECORDER ROTARY STEERABLE MOTOR FLOAT SUB CROSSOVER POSITIVE DISPLACEMENT MOTOR DH DYNAMICS RECORDER NON-MAG INTEGRAL BLADE STABILIZ NON-MAG FLEX PONY COLLAR MWD TOOL NON-MAG INTEGRAL BLADE STABILIZ NON-MAG DRILL COLLAR CROSSOVER DRILL COLLAR Total Length: ft Wt below Jars: 19.0 kip DAILY COSTS (Top 15) Cost Description Vendor Amount Rig Work HELMERICH & PAYNE IDC $25,000 Directional Drilling & LWD SCHLUMBERGER $20,180 Miscellaneous Services LONE STAR SERVICES $7,560 Rental Downhole Eqpmnt & Tools NATIONAL OILWELL, INC. $6,450 Tax OXY PERMIAN $5,280 Drilling & Completion Fluids M-I $4,902 Direct Supervision OXY PERMIAN $3,725 Miscellaneous Services SMITH INTERNATIONAL, INC. $3,338 Mud Logging WEATHERFORD INTERNATION $950 Drilling & Completion Fluids CATALYST CHEMICALS $468 Rental Surface Eqpmnt & Tools FAS-LINE SALES & RENTALS, $450 Rental Surface Eqpmnt & Tools MD TOTCO $377 Rental Surface Eqpmnt & Tools M-I $375 Rental Downhole Eqpmnt & Tools SMITH INTERNATIONAL, INC. $265 Rig Move HELMERICH & PAYNE IDC $257 3/25/2010 3:44:00PM Page 1 of 4

60 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/11/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 17 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS Operation Details 0:00 4: PRDR DRILL RSS P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 9,515' TO 9,545' ROTATED 30 FT, USING 500 GPM, 2100 PSI OFF BTM, 2250 PSI ON BOTTOM, 17 SRPM MRPM = 162 BRPM, 35K WOB AND 2K TORQUE OFF BOTTOM AND 3-4K TORQUE ON BOTTOM. DRILLING WITH 180 GRAVITY TOOLFACE WITH 100% STEERING RATIO ON POWER V TOOL. STEERING STRAIGHT DOWN. SURVEY AT 9,452' INC AZIMUTH TOTAL AVG ROP 7.5 FPH BACKGROUND GAS: UNITS NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 4 PPB SOLTEX ). MUD WT IN PPG, 60 VIS, PH 10.0 WATERLOSS 7 CC MUD WT OUT PPG, 60 VIS, PH 10.0 WATERLOSS 7 CC 4:00 6: PRDR DRILL RSS P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 9,545' TO 9,559' ROTATED 14 FT, USING 500 GPM, 2100 PSI OFF BTM, 2250 PSI ON BOTTOM, 17 SRPM MRPM = 162 BRPM, 35K WOB AND 2K TORQUE OFF BOTTOM AND 3-4K TORQUE ON BOTTOM. DRILLING WITH 180 GRAVITY TOOLFACE WITH 100% STEERING RATIO ON POWER V TOOL. STEERING STRAIGHT DOWN. TOTAL AVG ROP 7 FPH 9545' 100% LIMEY SHALE BACKGROUND GAS: UNITS NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 4 PPB SOLTEX ). MUD WT IN PPG, 50 VIS, PH 10.0 WATERLOSS 7 CC MUD WT OUT PPG, 50 VIS, PH 10.0 WATERLOSS 7 CC 04:00 HOUR SAFETY BREAK - OPERATING OF FORKLIFT ON SNOWY WEATHER CONDITIONS. K - REVS = TOTAL 169 WITH REAMING OPERATIONS, 155 WITHOUT REAMING OPERATIONS 6:00 13: PRDR DRILL RSS P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 9,559' TO 9,626' ROTATED 57', USING 500 GPM, 2050 PSI OFF BTM, 2250 PSI ON BOTTOM, 17 SRPM MRPM = 162 BRPM, 35K WOB AND 2K TORQUE OFF BOTTOM AND 3-4K TORQUE ON BOTTOM. 13:00 13: PRDR RIGMT SRVRIG P SERVICE RIG DRILLING WITH 180 GRAVITY TOOLFACE WITH 100% STEERING RATIO ON POWER V TOOL. STEERING STRAIGHT DOWN. TOTAL AVG ROP 8 FPH 9620' 10% LIMESTONE, 90% SHALE BACKGROUND GAS: UNITS NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 4 PPB SOLTEX ). MUD WT IN PPG, 51 VIS, PH 10.5 WATERLOSS 7 CC 08:00 HOUR SAFETY BREAK - WORKING IN WET, MUDDY CONDITIONS 12:00 HOUR SAFETY BREAK - MEET AND GREET, HOUSE KEEPING K - REVS = TOTAL 237 WITH REAMING OPERATIONS, 223 WITHOUT REAMING OPERATIONS 3/25/2010 3:44:00PM Page 2 of 4

61 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/11/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 17 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 13:30 18: PRDR DRILL RSS P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 9,626' TO 9,696' ROTATED 70', USING 500 GPM, 2050 PSI OFF BTM, 2250 PSI ON BOTTOM, 17 SRPM MRPM = 162 BRPM, 35K WOB AND 2K TORQUE OFF BOTTOM AND 3-4K TORQUE ON BOTTOM. DRILLING WITH 180 GRAVITY TOOLFACE WITH 100% STEERING RATIO ON POWER V TOOL. STEERING STRAIGHT DOWN. TOTAL AVG ROP 15.5 FPH 9620' 10% LIMESTONE, 90% SHALE BACKGROUND GAS: 100 UNITS NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 4 PPB SOLTEX ). MUD WT IN PPG, 51 VIS, PH 10.5 WATERLOSS 7 CC 08:00 HOUR SAFETY BREAK - WORKING IN WET, MUDDY CONDITIONS K - REVS = TOTAL 280 WITH REAMING OPERATIONS, 266 WITHOUT REAMING OPERATIONS 18:00 19: PRDR DRILL RSS P DRILL 8 3/4" VERTICAL PRODUCTION HOLE FROM 9,696' TO 9,712' ROTATED 16', USING 500 GPM, 2050 PSI OFF BTM, 2250 PSI ON BOTTOM, 17 SRPM MRPM = 162 BRPM, 35K WOB AND 2K TORQUE OFF BOTTOM AND 3-4K TORQUE ON BOTTOM. AT 9712' LOSING FLUID, STOPPED DRILLING MIXED AND PUMPED 30PPB LCM PILL, 5 PPB NUT PLUG, 5 PPB SAFECARB 250,9 PPB SAFECARB 500, 6 PPB G SEAL, 5 PPB MIX II. SPOT ON BOTTOM 50 BBLS IN ANNULUS, 30 BBLS INSIDE DRILL STRING, PULL 200' MONITOR LOSSES, (WELLBORE STATIC) TOTAL FLUID LOST, 136 BBLS/ 86 BBLS WHILE DRILLING, 50 BBLS WHILE PUMPING 80 BBL LCM PILL DRILLING WITH 180 GRAVITY TOOLFACE WITH 100% STEERING RATIO ON POWER V TOOL. STEERING STRAIGHT DOWN. TOTAL AVG ROP 10.6 FPH BACKGROUND GAS: UNITS NOTE: CIRCULATING THROUGH RIG STEEL PITS WITH (2% BY VOL BLACK FURY, 4 PPB SOLTEX ). MUD WT IN PPG, 51 VIS, PH 10.5 WATERLOSS 7 CC K - REVS = TOTAL 294 WITH REAMING OPERATIONS, 280 WITHOUT REAMING OPERATIONS 19:30 20: PRDR LCIRC HEAL P MONITOR WELLBORE FOR LOSSES/ FLOW, WELLBORE STATIC 20:00 SAFETY BRAKE- PROPER HOLE FILL, SLICK SURFACES 20:30 22: PRDR TRIP DRILL P POOH 9712' TO 8000', FLOW CHECK, WELLBORE STATIC, (NO DRAG, NO LOSSES), STRAP OUT 22:00 0: PRDR TRIP DRILL P PUMP SLUG 11.5 PPG, POOH FROM 8000' TO 3800', (NO DRAG, NO LOSSES) STRAP OUT Total Time Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. N N Days since Last RI: Days since Last LTA: 00:00 SAFETY BRAKE- LAYING DOWN BHA, HAND AND FINGER PLACEMENT Weather Comments: /25/2010 3:44:00PM Page 3 of 4

62 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/11/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 17 Other Remarks: FROM ODESSA GO WEST ON HWY MILES TO FM 181 TURN NORTH ON 181 GO MILES TO CATTLE GUARD #11 TURN EAST ONTO LEASE ROAD (H&P 370 SIGN), GO 1.2 MILES THEN SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 102 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY :WORKING IN WET AND MUDDY CONDITIONS ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 625 DAYS SINCE LAST RECORDABLE: 179 TOTAL JSA REVIEWED: 16 TOTAL STOP CARDS: 40 TOTAL PRE-OP SAFETY MEETINGS: 8 TOTAL LO/TO: 1 TOTAL PERMITS TO WORK: 0 BEST STOP CARD OF THE DAY: OBSERVED THIRD PARTY EMPLOYEE PUTTING HIS HAND IN A PINCH POINT WHILE BREAKING AND LAYING OUT HIS TOOLS, STOPPED JOB AND EXPLAINED HAZARDS, HE COMPLIED AND WENT BACK TO WORK, WATCHING PINCH POINTS. 3/25/2010 3:44:00PM Page 4 of 4

63 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/12/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 18 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: Engineer: 00 / 0 ft Rig: 9,712.0 ft Progress: 9,712.0 ft Rot Hrs Today: Avg ROP Today: DEVONIAN@ H&P ft hr 0.0 ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: Lithology: RUNNING 5.5" PRODUCTION 200' FINISH POOH, RIG UP AND RUN E-LOGS, FINISH W.L. E-LOGS, RIG UP AND RUN 5.5" PRODUCTION CASING CASING/WELL CONTROL PERSONNEL CHAD FRAZIER DANNY AUSTIN JUAN SIERRA 3,855ft 9,698ft 02/02/2010 FIT / ppg Geologist: Oxy Personnel: 2 Contractor Personnel: 23 Total on Site: 25 Bit No Size Manufacturer HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model / ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: $150,993 $1,926,568 $2,655,407 HYDRAULICS Pump Rate: 0.0 gpm Pump Press: SURVEY DATA (LAST 6) MUD GAS Avg Max Conn: Trip: Backgr: MD Incl Azi TVD N/-S E/-W VS DLS Build 9, , , , , , , , , , , , Serial No BIT RECORD IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R SMITH FHI37HYV PP Y 1x18, 1x14, 1x12 9, , WT-A E-I-WT-TD Bit No Rot Hrs Cum Rot Hrs BIT OPERATING PARAMETERS TODAY Prog Cum Prog ROP Cum ROP WOB RPM min/max min/max TFA P Drop Bit Noz Vel HHPSI MUD DATA - M-I Engineer: Saad Maraqa MBT: Sample From: In ph: Mud Type: Time / MD: DouVis/Pac/Solt 23:00 / 9,712.0 Pm / Pom: Pf / Mf: Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: 9.65 / / 26 9 / 13 / / / / bbl 3.40 / Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: 0 ppm 0.0 / 0.0 / VG Meter: 8@3 / 10@6 / 24@100 / 30@200 / 42@300 / 58@600 Comments: TOOH WITH NO PROBLEMS. RIGGED UP LOGGER AND STARTED LOGGING. FIRST RUN WAS SUCCESSFUL. WILL RIG UP CASING CREW TO RUN CASING. MUD PRODUCTS 10.0 lbm/bbl / , / 0 / 0 1 ppm $10,839 $103,075 Product Units Qty Used CAUSTIC SODA BG,50 LB 2.00 DUO-VIS BG,25 LB ENGINEERING SERVICE EACH 2.00 LIME BG,50 LB 2.00 Mi Wate (Barite) CAN,5 GA M-I-X II COARSE BG,25 LB PECAN NUT PLUG MEDIUM BG,50 LB POLYPAC R BG,50 LB 5.00 SAFE-CARB 20 BG,50 LB SAFE-CARB 40 BG,50 LB SALT 96% BG,50 LB 3.00 SOLTEX BG,50 LB LAST OR CURRENT BHA BHA No: 6 Bit No: 6 MD In: 9,405.0 ft Purpose: DRILL VERTICAL 8.750" PRODUCTION HOLE MD Out: 9,712.0 ft Component OD ID Jts Length TRI-CONE BIT DH DYNAMICS RECORDER ROTARY STEERABLE MOTOR FLOAT SUB CROSSOVER POSITIVE DISPLACEMENT MOTOR DH DYNAMICS RECORDER NON-MAG INTEGRAL BLADE STABILIZ NON-MAG FLEX PONY COLLAR MWD TOOL NON-MAG INTEGRAL BLADE STABILIZ NON-MAG DRILL COLLAR CROSSOVER DRILL COLLAR Total Length: ft Wt below Jars: 19.0 kip DAILY COSTS (Top 15) Cost Description Vendor Amount Electric Logging $63,702 Rig Work HELMERICH & PAYNE IDC $25,000 Directional Drilling & LWD SCHLUMBERGER $18,980 Drilling & Completion Fluids M-I $10,838 Bits, Reamers, Scrapers, HOs SMITH INTERNATIONAL, INC. $10,127 Tax OXY PERMIAN $9,878 Fuel & Lubricants THOMAS PETROLEUM $4,553 Direct Supervision OXY PERMIAN $3,725 Eqpmnt Transportation Charges HUGHES OILFIELD TRANSPOR $1,098 Rental Surface Eqpmnt & Tools FAS-LINE SALES & RENTALS, $450 Rental Surface Eqpmnt & Tools MD TOTCO $377 Rental Surface Eqpmnt & Tools M-I $375 Eqpmnt Transportation Charges HUGHES OILFIELD TRANSPOR $284 Rental Downhole Eqpmnt & Tools SMITH INTERNATIONAL, INC. $265 Rig Move HELMERICH & PAYNE IDC $257 3/25/2010 3:44:11PM Page 1 of 2

64 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/12/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 18 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS Operation Details 0:00 0: PRDR TRIP DRILL P PULL ROTATING RUBBER ASSEMBLY, INSTALL FLOW NIPPLE 00:00 SAFETY BRAKE- LAYING DOWN BHA, HAND AND FINGER PLACEMENT 0:30 4: PRDR TRIP DRILL P FINISH TOH FROM 3800' TO SURFACE, LAY DOWN DIRECTIONAL TOOLS STRAP 3.13 LONG 4:00 4: PRDR OTHR OTHER P CLEAN RIG FLOOR, RIG UP LUBRICATOR 4:30 14: PREV LOG OHLOG P PJSM WITH SCHLUMBERGER LOGGING CREW, RIG UP AND RUN E-LOGS AS PER PROGRAM RUN #1 FMI / HRLA / PEX/ HNGS/ CNL FMI - TD TO 1800 FPH PEX / HRLA / HNGS - TD TO 3855' (CASING 1800 FPH CNL / GR - TD TO 3600 FPH 08:00 SAFETY BREAK - LOCK OUT TAG OUT 12:00 SAFETY BREAK - EQUIPMENT MAINTENANCE 14:00 16: PREV LOG RIGUP P LAY DOWN FIRST RUN TOOLS, PICK UP AND MAKE UP SECOND RUN TOOLS 16:00 SAFETY BREAK - COMPLACENCY WHILE THING ON RIG ARE SLOW 16:30 0: PREV LOG OHLOG P SECOND LOGGING RUN AS FOLLOWS: Total Time Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. Other Remarks: N N Days since Last RI: Days since Last LTA: DSI / UBI / GPIT / GR UBI - TD TO 850 FPH DSI - TD TO 1500 FPH NOTE: NOTIFIED TRRC OF CASING & CEMENT JOB 19:00 AMBER OPERATOR #14 20:00 SAFETY BRAKE- MEET AND GREET, SLIPS/ TRIPS/ AND FALLS 18 Weather Comments: FROM ODESSA GO WEST ON HWY MILES TO FM 181 TURN NORTH ON 181 GO MILES TO CATTLE GUARD #11 TURN EAST ONTO LEASE ROAD (H&P 370 SIGN), GO 1.2 MILES THEN SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 102 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY :RUNNING PRODUCTION CASING ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 626 DAYS SINCE LAST RECORDABLE: 180 TOTAL JSA REVIEWED: 16 TOTAL STOP CARDS: 40 TOTAL PRE-OP SAFETY MEETINGS: 8 TOTAL LO/TO: 2 TOTAL PERMITS TO WORK: 0 BEST STOP CARD OF THE DAY: OBSERVED THIRD PARTY EMPLOYEE LEANING TO FAR OUT WITH VEE DOOR OPEN, STOPPED JOB AND INSTRUCTED HIM IN PROPER WAY TO HANDLE TOOLS IN VEE DOOR, ALLOWING TOOLS TO COME IN AND SET ON FLOOR BEFORE REMOVING TAG LINE AND RETIEING FOR PROPER PICK UP ON FLOOR. 3/25/2010 3:44:11PM Page 2 of 2

65 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/13/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 19 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: Engineer: 00 / 0 ft Rig: 9,712.0 ft Progress: 9,712.0 ft Rot Hrs Today: Avg ROP Today: DEVONIAN@ H&P ft hr 0.0 ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: Lithology: ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: $295,190 $2,221,758 $2,655,407 CEMENTING PRODUCTION CASING SECOND STAGE FINISH E-LOGS, RUN 5.5" PRODUCTION CASING, CIRCULATE, CEMENT 5.5" 17# PRODUCTION CASING PUMP 2ND STAGE CEMENT, RUN PACK OFF ASSEMBLY, NIPPLE DOWN BOPE, NIPPLE UP TUBING HEAD, RIG DOWN RIG FOR 100+ MILE CASING/WELL CONTROL PERSONNEL CHAD FRAZIER DANNY AUSTIN JUAN SIERRA 3,855ft 9,698ft 02/02/2010 FIT / ppg Geologist: Oxy Personnel: 2 Contractor Personnel: 25 Total on Site: 27 Bit No Size Manufacturer HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model / HYDRAULICS Pump Rate: 0.0 gpm Pump Press: SURVEY DATA (LAST 6) MUD GAS Avg Max Conn: Trip: Backgr: MD Incl Azi TVD N/-S E/-W VS DLS Build 9, , , , , , , , , , , , Serial No BIT RECORD IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R SMITH FHI37HYV PP Y 1x18, 1x14, 1x12 9, , WT-A E-I-WT-TD Bit No Rot Hrs Cum Rot Hrs BIT OPERATING PARAMETERS TODAY Prog Cum Prog ROP Cum ROP WOB RPM min/max min/max TFA P Drop Bit Noz Vel HHPSI MUD DATA - M-I Engineer: Saad Maraqa MBT: Sample From: In ph: Mud Type: Time / MD: DouVis/Pac/Solt 6:30 / 9,712.0 Pm / Pom: Pf / Mf: Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: 9.70 / / 25 9 / 13 / / / 0.0 / bbl 3.80 / Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: VG Meter: 8@3 / 10@6 / 24@100 / 30@200 / 41@300 / 57@600 Comments: MW 9.7, 62 visc, 6 W.L. MUD PRODUCTS 10.0 lbm/bbl / , / / 1 ppm 0.0 / 0.0 / $1,382 $104,457 Product Units Qty Used DUO-VIS BG,25 LB 2.00 ENGINEERING SERVICE EACH 1.00 Mi Wate (Barite) CAN,5 GA SOLTEX BG,50 LB 2.00 LAST OR CURRENT BHA BHA No: 6 Bit No: 6 MD In: 9,405.0 ft Purpose: DRILL VERTICAL 8.750" PRODUCTION HOLE MD Out: 9,712.0 ft Component OD ID Jts Length TRI-CONE BIT DH DYNAMICS RECORDER ROTARY STEERABLE MOTOR FLOAT SUB CROSSOVER POSITIVE DISPLACEMENT MOTOR DH DYNAMICS RECORDER NON-MAG INTEGRAL BLADE STABILIZ NON-MAG FLEX PONY COLLAR MWD TOOL NON-MAG INTEGRAL BLADE STABILIZ NON-MAG DRILL COLLAR CROSSOVER DRILL COLLAR Total Length: ft Wt below Jars: 19.0 kip DAILY COSTS (Top 15) Cost Description Vendor Amount Casing & Accessories SOONER PIPE $210,208 Rig Work HELMERICH & PAYNE IDC $25,000 Tax OXY PERMIAN $19,312 Casing & Accessories WEATHERFORD INTERNATION $17,180 Miscellaneous Services B & L CASING $15,576 Direct Supervision OXY PERMIAN $3,725 Drilling & Completion Fluids M-I $1,382 Rental Surface Eqpmnt & Tools FAS-LINE SALES & RENTALS, $450 Rental Surface Eqpmnt & Tools MD TOTCO $377 Rental Surface Eqpmnt & Tools M-I $375 Rental Downhole Eqpmnt & Tools SMITH INTERNATIONAL, INC. $265 Rig Move HELMERICH & PAYNE IDC $257 Camp & Catering STALLION OILFIELD SERVICE $120 Rental Surface Eqpmnt & Tools STALLION OILFIELD SERVICE $119 Rental Surface Eqpmnt & Tools M-I $110 3/25/2010 3:44:21PM Page 1 of 4

66 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/13/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 19 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS 0:00 2: PREV LOG OHLOG P SECOND LOGGING RUN AS FOLLOWS: DSI / UBI / GPIT / GR UBI - TD TO 850 FPH DSI - TD TO 1500 FPH Operation Details NOTE: NOTIFIED TRRC OF CASING & CEMENT JOB 19:00 AMBER OPERATOR #14 00:00 SAFETY MEETING- PREPING TOOLS FOR CASING JOB 2:30 3: PREV LOG RIGUP P PJSM, RIG DOWN LOGGING EQUIPMENT, LUBRICATOR 3:30 4: PRRC CSG RIGUP P PULL WEAR BUSHING, INSTALL TRIP NIPPLE 4:00 15: PRRC CSG RUNCSG P CONDUCT PRE JOB SAFETY MEETING WITH CASING CREW, & RIG UP & RUN 5½", 17 #/FT, L80, LTC PRODUCTION CASING FROM SURFACE TO 7,000' USING 3410 LB-FT AVERAGE TORQUE AS FOLLOWS: SEC/JT SEC/JT 30 SEC/JT NOT TO EXCEED 10.0 PPG FRAC GRADIENT 1 - WEATHERFORD REAMER FLOAT SHOE - THREAD LOCKED FROM 9,698.00' TO 9,694.88' 1- PUP JOINT 5½", 17 #/FT, L80, LTC - THREAD LOCKED FROM 9,694.88' TO 9,688.80' 2 - SHOE JOINTS 5½", 17 #/FT, L80, LTC - THREAD LOCKED FROM 9,688.80' TO 9,613.52' 1 - WEATHERFORD FLOAT COLLAR, MODEL E402 - THREAD LOCKED FROM 9,613.52' TO 9,612.44' 13 - JOINTS 5½", 17 #/FT, L80, LTC CASING FROM 9,612.44' TO 9,118.86' 1 - FLAG JOINT 5½", 17 #/FT, L80, LTC CASING FROM 9,118.86' TO 9,104.03' 42 - JOINTS 5½", 17 #/FT, L80, LTC CASING FROM 9,104.03' TO 7,501.20' 1 - WEATHERFORD STAGE TOOL, MODEL 751E (THREAD LOCKED) FROM 7,501.20' TO 7,499.02' JOINTS 5½", 17 #/FT, L80, LTC CASING FROM 7,499.02' TO 32.60' 1 - FMC CASING HANGER WITH NIPPLE FROM 32.60' TO 26.65' 1 - LANDING JOINT WITH RUNNING TOOL FROM 26.65' TO 6.91' ABOVE RIG FLOOR HOLE GIVING BACK PROPER DISPLACEMENT THROUGH OUT ENTIRE CASING RUN NOTE: CASING SHOE AND HAVE SAFETY BREAK WITH CASING CREW, TOOL HAND & RIG CREW OVER RUNNING CASING AND ANY ISSUES ANYONE 12:00 15:00 18: PRRC CIRC CNDHOL P 7000' BREAK CIRCULATION WITH 300 PSI NO LOSSES CONDUCT SAFETY MEETING WITH ALL ON RIG AND RIG UP FILL UP TOOL AND 200 TON AIR SLIP TYPE ELEVATORS. FIRST SET OF ELEVATORS DID NOT WORK, PICK UP BACK UP SET OF ELEVATORS AND FOUND 3 AIR LEAKS IN AIR LINE, REPLACED AIR LINE 3/25/2010 3:44:21PM Page 2 of 4

67 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/13/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 19 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 18:00 21: PRRC CSG RUNCSG P CREW CHANGE AND CONDUCT PRE JOB SAFETY MEETING WITH CASING CREW AND RIG CREW COMING ON TOUR, CONTINUE TO RUN 5½", 17 #/FT, L80, LTC PRODUCTION CASING FROM SURFACE TO 9,698' USING 3410 LB-FT AVERAGE TORQUE AS FOLLOWS: SEC/JT SEC/JT 30 SEC/JT NOT TO EXCEED 10.0 PPG FRAC GRADIENT 1 - WEATHERFORD REAMER FLOAT SHOE - THREAD LOCKED FROM 9,698.00' TO 9,694.88' 1- PUP JOINT 5½", 17 #/FT, L80, LTC - THREAD LOCKED FROM 9,694.88' TO 9,688.80' 2 - SHOE JOINTS 5½", 17 #/FT, L80, LTC - THREAD LOCKED FROM 9,688.80' TO 9,613.52' 1 - WEATHERFORD FLOAT COLLAR, MODEL E402 - THREAD LOCKED FROM 9,613.52' TO 9,612.44' 13 - JOINTS 5½", 17 #/FT, L80, LTC CASING FROM 9,612.44' TO 9,118.86' 1 - FLAG JOINT 5½", 17 #/FT, L80, LTC CASING FROM 9,118.86' TO 9,104.03' 42 - JOINTS 5½", 17 #/FT, L80, LTC CASING FROM 9,104.03' TO 7,501.20' 1 - WEATHERFORD STAGE TOOL, MODEL 751E (THREAD LOCKED) FROM 7,501.20' TO 7,499.02' JOINTS 5½", 17 #/FT, L80, LTC CASING FROM 7,499.02' TO 32.60' 1 - FMC CASING HANGER WITH NIPPLE FROM 32.60' TO 26.65' 1 - LANDING JOINT WITH RUNNING TOOL FROM 26.65' TO 6.91' ABOVE RIG FLOOR HOLE GIVING BACK PROPER DISPLACEMENT THROUGH OUT ENTIRE CASING RUN CASING WENT IN HOLE SLICK. 21:30 23: PRRC CIRC CNDHOL P CIRCULATE 1.5 TIMES CASING VOLUME WITH 360 PUMP PSI WITH NO LOSSES, PJSM RIG DOWN CASING CREW TOOLS 23:00 0: PRRC CMT PRIM P SAFETY MEETING WITH HALLIBURTON CEMENT CREW, RIG UP CEMENT HEAD TEST LINES TO 250/ 4000# CEMENT 1ST STAGE 5.5 CASING FROM TO WITH HALLIBURTON PUMP TRUCK AS FOLLOWS: PUMP 20 BBLS FRESH WATER AHEAD 24 BBLS SUPERFLUSH 20 BBLS H2O WITH RED DYE Total Time Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. N N Days since Last RI: Days since Last LTA: 110 SACKS LEAD HALLIBURTON INTERFILL "H" ( 11.9 PPG, 2.49 YLD, GAL/SK H2O) AT 5.0 BPM WITH 564 PSI 450 SX TAIL SUPER "H" (13.2 PPG, 1.6 YLD, 7.8 GAL/SK H2O) Weather Comments: /25/2010 3:44:21PM Page 3 of 4

68 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/13/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 19 Other Remarks: FROM ODESSA GO WEST ON HWY MILES TO FM 181 TURN NORTH ON 181 GO MILES TO CATTLE GUARD #11 TURN EAST ONTO LEASE ROAD (H&P 370 SIGN), GO 1.2 MILES THEN SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 102 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY :RUNNING/ CEMENTING PRODUCTION CASING, LAYING DOWN PIPE FROM DERRICK ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 627 DAYS SINCE LAST RECORDABLE: 181 TOTAL JSA REVIEWED: 17 TOTAL STOP CARDS: 40 TOTAL PRE-OP SAFETY MEETINGS: 8 TOTAL LO/TO: 0 TOTAL PERMITS TO WORK: 0 BEST STOP CARD OF THE DAY: OBSERVED THIRD PARTY EMPLOYEE USING A SHOP HAMMER WITH A 3/4" PIPE WELDED IN IT FOR A HANDLE, STOPPED JOB AND ASKED HIM TO REMOVE IT FROM THE RIG, HE COMPLIED AND WE FURNISHED A HAMMER FOR HIM TO USE ON RIG UP. 3/25/2010 3:44:21PM Page 4 of 4

69 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/14/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 20 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: Engineer: 00 / 0 ft Rig: 9,712.0 ft Progress: 9,712.0 ft Rot Hrs Today: Avg ROP Today: DEVONIAN@ H&P ft hr 0.0 ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: Lithology: ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: $135,081 $2,356,840 $2,655,407 RIGGING DOWN PREPARING RIG FOR 100+ MILE RIG MOVE TO CYPRESS 28 FEDERAL 2H (SPLIT REPORT) CEMENT 5.5" PRODUCTION CASING, INSTALL PACK OFF & TEST, NIPPLE DOWN BOPE, INSTALL TUBING HEAD & TEST, CLEAN MUD TAN RELEASE RIG TO CYPRESS 28 FEDERAL #2H, RIG DOWN, MOVE, AND START RIGGING UP RIG TO DRILL CASING/WELL CONTROL PERSONNEL CHAD FRAZIER DANNY AUSTIN JUAN SIERRA 3,855ft 9,698ft 02/02/2010 FIT / ppg Geologist: Oxy Personnel: 2 Contractor Personnel: 26 Total on Site: 28 Bit No Size Manufacturer HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model / HYDRAULICS Pump Rate: 0.0 gpm Pump Press: SURVEY DATA (LAST 6) MUD GAS Avg Max Conn: Trip: Backgr: MD Incl Azi TVD N/-S E/-W VS DLS Build 9, , , , , , , , , , , , Serial No BIT RECORD IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R Bit No Rot Hrs Cum Rot Hrs BIT OPERATING PARAMETERS TODAY Prog Cum Prog ROP Cum ROP WOB RPM min/max min/max TFA P Drop Bit Noz Vel HHPSI Engineer: Sample From: Mud Type: Time / MD: / Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: VG Meter: Comments: / / / / / / / / MUD DATA - MUD PRODUCTS MBT: ph: Pm / Pom: Pf / Mf: Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: / / / 0.0 / 0.0 / Product Units Qty Used $0 $104,457 LAST OR CURRENT BHA Component OD ID Jts Length DAILY COSTS (Top 15) Cost Description Vendor Amount Cementing HALLIBURTON ENERGY SERV $51,544 Rig Work HELMERICH & PAYNE IDC $25,000 Directional Drilling & LWD SCHLUMBERGER $18,980 Miscellaneous Services SMITH INTERNATIONAL, INC. $9,882 Tax OXY PERMIAN $8,837 Miscellaneous Services KELLY'S PIPE INSPECTION, IN $4,010 Direct Supervision OXY PERMIAN $3,725 Casing & Accessories WEATHERFORD INTERNATION $3,040 Miscellaneous Services MONAHANS NIPPLE-UP SERV $2,925 Miscellaneous Services FMC TECHNOLOGIES $2,160 Drilling & Completion Fluids M-I $1,382 Eqpmnt Transportation Charges ROSS' HOTSHOT & FORKLIFT $504 Rental Surface Eqpmnt & Tools FAS-LINE SALES & RENTALS, $450 Rental Surface Eqpmnt & Tools MD TOTCO $377 Rental Surface Eqpmnt & Tools M-I $375 3/25/2010 3:44:42PM Page 1 of 3

70 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/14/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 20 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS Operation Details 0:00 1: PRRC CMT PRIM P FINISH CEMENTING 1ST STAGE 5.5 CASING FROM TO WITH HALLIBURTON PUMP TRUCK AS FOLLOWS: PUMP 20 BBLS FRESH WATER AHEAD 24 BBLS SUPERFLUSH BBLS FRESH WATER WITH RED DYE 110 SACKS LEAD HALLIBURTON INTERFILL "H" ( 11.9 PPG, 2.49 YLD, GAL/SK H2O) AT 5.0 BPM WITH 564 PSI 450 SX TAIL SUPER "H" (13.2 PPG, 1.6 YLD, 7.8 GAL/SK H2O) DROPPED BOTTOM PLUG. DISPLACED CEMENT WITH 60 BBLS FRESH, 163 BBLS. MUD AT 5 BPM WITH 117 PSI. BUMP PLUG AT 01:30 HOURS 02/14/2010 WITH 1024 PSI LIFT PRESSURE, PRESSURED UP TO 1644#, BLED OFF 1 BBL RETURNS. FLOAT EQUIPMENT HOLDING. CIRCULATED 313 SX, 106 BBLS CEMENT TO SURFACE HAD GOOD RETURNS THROUGH OUT FIRST STAGE CEMENT JOB 1:30 3: PRRC CMT PRIM P DROP DV OPENING TOOL, LET FALL 30 MINUTES, OPEN DV WITH 881# PSI CIRC 313 SX/ 106 BBLS CEMENT TO SURFACE OFF TOP OF DV TOOL, PUMPING 5 BPM WITH 557 PSI 3:30 5: PRRC CMT PRIM P CIRCULATE DV TOOL WITH 275 PSI AT 5 BBP WITH RIG PUMP, GOOD RETURNS, (NO LOSSES) SAFETY MEETING WITH RIG CREW- PINCH POINTS, UNFAMILIAR ACTIVITY LAY DOWN DRILL PIPE FROM THE DERRICK 5:30 8: PRRC CMT PRIM P SAFETY MEETING WITH HALLIBURTON PUMP SECOND STAGE CEMENT JOB AS FOLLOWS: 20 BBLS FRESH WATER SPACER ( BPM WITH 251 PSI. LEAD SLURRY 366 BBLS/ 825 SX INTERFILL H (11.9 PPB, 2.49 YLD, GAL/SK H2O) AT 8 BPM WITH 266 PSI. TAIL SLURRY 128 BBLS/ 700 SX PERMIAN BASIN SUPER H CEMENT ( 13.2 PPB, 1.6 YLD, 7.8 GAL/SK H2O) AT 7BPM WITH 501 PSI DROP DV TOOL CLOSING WIPER PLUG, WASH PUMP AND LINES DISPLACE WITH 174 BBLS FRESH WATER (8.34 PPG) BUMP PLUG WITH FINAL LIFT PRESSURE OF 2106 PSI, RAISE PRESSURE TO 3665 PSI TO CLOSE DV TOOL, RELEASE PRESSURE AND CHECK DV TOOL - DV TOO CLOSED BLED BACK 2 BBLS TO DISPLACEMENT TANKS ON PUMP TRUCK CIRCULATED 80 BBLS / 180 SX OF CEMENT TO SURFACE 8:00 9: PRRC OTHR OTHER P FLUSH THROUGH BOPE, AND ALL SURFACE LINES WITH FRESH WATER, AND RIG DOWN HALLIBURTON 9:00 10: PRRC OTHR OTHER P BACK OUT LANDING JOINT AND LAY DOWN, PICK UP JOINT OF DRILL PIPE PACK OFF RUNNING TOOL AND PACK OFF AND INSTALL PACK OFF IN WELL HEAD AND TEST TO 4400 PSI FOR 5 MIN. - GOOD TEST 10:30 14: PRRC BOP RDBOP P PRE JOB SAFETY MEETING WITH NIPPLE DOWN CREW, NIPPLE DOWN BOPE, INSTALL TUBING HEAD AND TEST TO 4400 PSI FOR 5 MIN - GOOD TEST RIG DOWN & LOAD OUT SOLIDS CONTROL EQUIPMENT, LOAD OUT CASING, BHA EQUIPMENT, AND MUD PRODUCTS 14:00 15: PRRC OTHR OTHER P RIG DOWN CASING BELLS AND ELEVEATORS AND INSTALL DRILLING BAILS AND ELEVATORS, RIG DOWN CHOKE PANEL AND LOAD OUT. 15:30 16: PRRC RIGMT SRVRIG P SERVICE RIG 16:00 22: PRRC TRIP PULD P LAY DOWN DRILL STRING OUT OF DERRICK IN MOUSE HOLE 16:00 SAFETY BREAK - REVIEW JSA OVER LAYING DOWN DRILL STRING OUT OF DERRICK IN MOUSE HOLE, AND DISSCUS THE HIGH WINDS AND COLD WEATHER NOTE: CONDUCT DS1 INSPECTION ON 17 JOINTS 5" HWDP & " DRILL COLLARS, & CLEAN DRILL PIPE ENDS AND REDOPE WHILE LAYING DRILL PIPE DOWN 3/25/2010 3:44:42PM Page 2 of 3

71 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/14/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 20 From To Hrs Op Op Phase Code Op Sub Op Type Operation Details 22:00 0: PRRC TRIP PULD P LAY DOWN DRILL STRING OUT OF DERRICK IN MOUSE HOLE Total Time Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. Other Remarks: N N Days since Last RI: Days since Last LTA: 20:00 SAFETY BREAK - REFOCUS, ST-80 BROKE A HOSE, REVIEW JSA, LOCK OUT TAG OUT Weather Comments: FROM ODESSA GO WEST ON HWY MILES TO FM 181 TURN NORTH ON 181 GO MILES TO CATTLE GUARD #11 TURN EAST ONTO LEASE ROAD (H&P 370 SIGN), GO 1.2 MILES THEN SOUTH.6 MILE, THEN EAST 1.0 MILE, THEN NORTH.2 MILE TO LOCATION (LAT/LONG 32 DEG. 08' 30.12" N/ 102 DEG. 41' 40.66" W NAD-27 LIFE FLIGHT DIRECTIONS) SAFETY TOPIC OF THE DAY : LAYING DOWN DRILL STRING FROM DERRICK, REFOCUS MEETINGS ACCIDENTS/ INCIDENTS REPORTED LAST 24 HRS.: NONE DAYS SINCE LAST LTI: 628 DAYS SINCE LAST RECORDABLE: 182 TOTAL JSA REVIEWED: 16 TOTAL STOP CARDS: 40 TOTAL PRE-OP SAFETY MEETINGS: 8 TOTAL LO/TO: 1 TOTAL PERMITS TO WORK: 2 BEST STOP CARD OF THE DAY: OBSERVED THIRD PARTY WORKING IN AREA WITH LOW LIGHTING, STOPPED JOB AND PUT UP PORTABLE LIGHTING GEN SET, THEY THANKED US AND WERE ABLE TO WORK SAFER. 3/25/2010 3:44:42PM Page 3 of 3

72 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/15/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 21 Wellbore / Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current Ops: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form Test/EMW: Supervisor 1: Supervisor 2: Engineer: 00 / 0 ft Rig: 9,712.0 ft Progress: 9,712.0 ft Rot Hrs Today: Avg ROP Today: DEVONIAN@ H&P ft hr 0.0 ft/hr Ref Datum: Ground Elev: AFE MD/Days: AFE Number: Lithology: RIG RELEASED TO CYPRESS 28 FEDERAL #2H 02:00 RIG RELEASED TO CYPRESS 28 FEDERAL #2H 02:00 RIG RELEASED TO CYPRESS 28 FEDERAL #2H 02:00 CASING/WELL CONTROL PERSONNEL CHAD FRAZIER DANNY AUSTIN JUAN SIERRA 3,855ft 9,698ft 02/02/2010 FIT / ppg Geologist: Oxy Personnel: 2 Contractor Personnel: 19 Total on Site: 21 Bit No Size Manufacturer HOOKLOAD & TORQUE Str Wt Up/Dn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model / ORIGINAL 3,22 ft 10,000.0 / 33.8 days #0202 DFS: Daily Cost: Cum Cost: AFE Cost: $7,147 $2,363,987 $2,655,407 HYDRAULICS Pump Rate: 0.0 gpm Pump Press: SURVEY DATA (LAST 6) MUD GAS Avg Max Conn: Trip: Backgr: MD Incl Azi TVD N/-S E/-W VS DLS Build 9, , , , , , , , , , , , Serial No BIT RECORD IADC Code Nozzles MD In MD Out I-O-D-L B-G-O-R Bit No Rot Hrs Cum Rot Hrs BIT OPERATING PARAMETERS TODAY Prog Cum Prog ROP Cum ROP WOB RPM min/max min/max TFA P Drop Bit Noz Vel HHPSI Engineer: Sample From: Mud Type: Time / MD: / Temp: Rheology Temp: Viscosity: PV / YP: Gels 10s/10m/30m: API WL: HTHP WL: Cake API / HTHP: Solids / Sol Corr: Oil / Water: Sand: Water Added: Oil Added: LGS: VG Meter: Comments: / / / / / / / / MUD DATA - MUD PRODUCTS MBT: ph: Pm / Pom: Pf / Mf: Chlorides: Ca+ / K+: CaCl2: Clom: Lime: ES: ECD: n / K: Carbonate: Bicarbonate: Form Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: / / / 0.0 / 0.0 / Product Units Qty Used $0 $104,457 LAST OR CURRENT BHA Component OD ID Jts Length DAILY COSTS (Top 15) Cost Description Vendor Amount Direct Supervision OXY PERMIAN $3,725 Rig Work HELMERICH & PAYNE IDC $2,083 Tax OXY PERMIAN $468 Rig Move HELMERICH & PAYNE IDC $257 Camp & Catering STALLION OILFIELD SERVICE $120 Rental Surface Eqpmnt & Tools STALLION OILFIELD SERVICE $119 Rental Surface Eqpmnt & Tools LIGHT TOWER RENTALS $100 Rental Surface Eqpmnt & Tools NEFF FORK LIFT $78 Rental Surface Eqpmnt & Tools MUSSLEWHITE TRUCKING $70 Camp & Catering STALLION OILFIELD SERVICE $60 Camp & Catering STALLION OILFIELD SERVICE $38 Camp & Catering B & L SATELLITE RENTALS $30 3/25/2010 3:44:52PM Page 1 of 2

73 OXY USA WTP LP DAILY OPERATIONS REPORT Event: EXPL DRILLING DRONE BEE 0001 Date: 02/15/2010 Prim. Reason: ORIG DRILL VERT USA Report No: 21 From To Hrs Op Op Phase Code Op Sub Op Type OPERATIONS Operation Details 0:00 2: PRRC TRIP PULD P LAY DOWN DRILL STRING OUT OF DERRICK IN MOUSE HOLE RIG RELEASED TO CYPRESS 28 FED 02:00 02/15/2010 Total Time 2.00 Safety Incident? Environ Incident? Incident Comments: No incidents reported last 24 hours. Other Remarks: N N Days since Last RI: Days since Last LTA: 02:00 SAFETY BRAKE- REVIEW JSA SLIP AND CUT DRILLING LINE, LOCK OUT TAG OUT PROCEDURE Weather Comments: /25/2010 3:44:52PM Page 2 of 2

74 Welcome to productive drilling Schlumberger Drillingand Measurements US Land - South West Basin END OF WELL REPORT CLIENT - Oxy RIG NAME - H&P 370 WELL NAME - Drone Bee #1 FIELD - Andrew County, TX DATE - 17 Feb 2010

75 February 17, 2010 OXY Re: Client: Oxy USA Well: Drone Bee #1 Rig: H&P 370 County: Andrew County, TX SAP # Job # 10SWB0045 Please find enclosed, a copy of the End of Well Report (EOW) provided by our Directional Drilling Services from 2/4/2010 through 2/12/2010.This report consists of color planned vs. actual well drawings, proposed and actual surveys, morning reports, BHAs, and an Anadrill office support personnel sheet for the above referenced well. Should your office require further information, please feel free to contact your sales representative, Jeremy Miller or me. Sincerely, Nophawit Thaiprasert Drilling Engineer

76 Jeremy Miller Sales Engineer 1325 South Dairy Ashford Houston TX Phone Michael Bohannan Directional Drilling Coordinator 8300 W I-20 Midland, TX Phone Mark Brown MWD - Field Service Manager 8300 W I-20 Midland, TX Phone Nophawit Thiaprasert Schlumberger Drilling Engineer 4301 S.W. 44th Street Oklahoma City, OK Phone

77 Table of Content Geodetic Interpolated Proposal Final Daily Plan vs. Actual Final Survey Report Daily Drilling Reports Bottom Hole Assembly Reports End of Well Summary Drilling Parameters Activity Graphs Days vs. Depth Key Performance Indicators

78 Geodetic Interpolated Proposal

79 Oxy Drone Bee #1 Rev0 NT 28-Jan-10 Proposal Report (Def Plan) Report Date: Client: Field: Structure / Slot: Well: Borehole: UWI / API#: Survey Name: Survey Date: Tort / AHD / DDI / ERD Ratio: Grid Coordinate System: Location Lat / Long: Location Grid N/E Y/X: Grid Convergence Angle: Grid Scale Factor: February 17, :37 AM Survey / DLS Computation: OXY Permian Drilling Vertical Section Azimuth: TX Andrews County Vertical Section Origin: Oxy Drone Bee #1 / Oxy Drone Bee #1 TVD Reference Datum: Oxy Drone Bee #1 Original Borehole TVD Reference Elevation: Seabed / Ground Elevation: Unknown / Unknown Magnetic Declination: Oxy Drone Bee #1 Rev0 NT 28-Jan-10 Total Field Strength: January 28, 2010 Magnetic Dip Angle: 0 / 0 ft / 0 / 0 Declination Date: NAD27 Texas State Plane, North Central Zone, US Feet Magnetic Declination Model: N 32 8' ", W ' " North Reference: N ftus, E ftus Grid Correction: Total Corr Mag North->Grid North: Local Coord Referenced To: Minimum Curvature / Lubinski 0 (Grid North) 0 ft, 0 ft RKB ft above MSL 3220 ft above MSL nt January 28, 2010 BGGM 2009 Grid North Well Head Comments MD (ft) Incl ( ) Azim Grid ( ) TVD (ft) TVDSS (ft) VSEC (ft) NS (ft) EW (ft) DLS ( /100ft) Northing (ftus) Easting (ftus) Latitude (N/S ' ") Longitude (E/W ' ") SHL N W N W " Conductor N W N W N W /8" Casing point N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W /8" Casing point N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W Drilling Office Oxy Drone Bee #1\Oxy Drone Bee #1\Original Borehole\Oxy Drone Bee #1 Rev0 NT 28-Jan-10 2/17/ :56 AM Page 1 of 2

80 Comments MD (ft) Incl ( ) Azim Grid ( ) TVD (ft) TVDSS (ft) VSEC (ft) NS (ft) EW (ft) DLS ( /100ft) Northing (ftus) Easting (ftus) Latitude (N/S ' ") Longitude (E/W ' ") N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W TD N W Survey Type: Def Plan Survey Error Model: Survey Program: MD From (ft) MD To (ft) ISCWSA Rev 0 *** 3-D % Confidence sigma EOU Freq Survey Tool Type Borehole / Survey 1/100 SLB_INC-ONLY-Depth Only Original Borehole / Oxy Drone Bee #1 Rev0 NT 28-Jan-10 1/100 SLB_INC-ONLY Original Borehole / Oxy Drone Bee #1 Rev0 NT 28-Jan-10 1/100 SLB_MWD-STD Original Borehole / Oxy Drone Bee #1 Rev0 NT 28-Jan-10 1/100 SLB_MWD-STD Original Borehole / Oxy Drone Bee #1 Rev0 NT 28-Jan-10 Drilling Office Oxy Drone Bee #1\Oxy Drone Bee #1\Original Borehole\Oxy Drone Bee #1 Rev0 NT 28-Jan-10 2/17/ :56 AM Page 2 of 2

81 Final Daily Plan vs. Actual

82 WELL FIELD STRUCTURE Grid True Mag Oxy Drone Bee #1 February 17, 2010 OXY Permian Drilling Original Borehole OXY Permian Drilling Oxy Drone Bee #1 TX Andrews County H&P 370 Magnetic Parameters Surface Location NAD27 Texas State Plane, North Central Zone, US Feet Miscellaneous Model: BGGM 2009 Dip: Mag Dec: Date: FS: February 01, nT Lat: Lon: N W Northing: Easting: ftus ftus Grid Conv: Scale Fact: Slot: Plan: Oxy Drone Bee #1 MWD Surveys TVD Ref: RKB(3244ft above MSL) Srvy Date: February 01, SHL 0 MD 0 TVD az 0 departure " Conductor 120 MD 120 TVD az 0 departure /8" Casing point 350 MD 350 TVD az 0 departure Oxy Drone Bee #1 PBHL Target Oxy Drone Bee # Target SHL 0 MD 0 TVD 20" Conductor az 120 MD 120 TVD N=0 E=0 az N=0 E= <<< S Scale = 1(in):50(ft) N >>> /8" Casing point 350 MD 350 TVD az N=0 E=0 9 5/8" Casing point 3850 MD 3850 TVD az Last Precision MWD survey N=0 E= MD 6507 TVD az N=-80 E=-86 Oxy Drone Bee #1 Rev0 NT 28-Jan-10 TD MD TVD az N=0 E=0 Final Survey 9546 MD 9536 TVD az N=-160 E=-132 Oxy Drone Bee #1 Surveys 0ft to 9712ft SLB Projection to TD 9712 MD 9702 TVD az N=-159 E= <<< W Scale = 1(in):50(ft) E >>> /8" Casing point 3850 MD 3850 TVD az 0 departure Legend 4200 Oxy Drone Bee #1 PBHL Target Oxy Drone Bee # Target 4400 Oxy Drone Bee #1 Surveys 0ft to 9712ft SLB Oxy Drone Bee #1 Rev0 NT 28-Jan TVD Scale = 1(in):200(ft) Grid North Tot Corr (M->G ) Mag Dec (7.353 ) Grid Conv ( ) Last Precision MWD survey 6511 MD 6507 TVD az -79 departure Critical Points Critical Point MD INCL AZIM TVD VSEC N(+) / S(-) E(+) / W(-) DLS SHL Last Precision MWD survey Final Survey Projection to TD Final Survey 9546 MD 9536 TVD az -159 departure Oxy Drone Bee #1 Surveys 0ft to 9712ft SLB Projection to TD 9712 MD 9702 TVD az -158 departure Oxy Drone Bee #1 Rev0 NT 28-Jan-10 TD MD TVD az 0 departure Vertical Section (ft) Azim = 0, Scale = 1(in):200(ft) Origin = 0 N/-S, 0 E/-W Drawn By: S. Stewart Date Created: February 17, :41:32 AM Checked By: N. Thaiprasert Checked Date: Approved By: Approved Date:

83 Final Survey Report

84 Oxy Drone Bee #1 Surveys 0ft to 9712ft SLB Survey Report (Def Survey) Report Date: Client: Field: Structure / Slot: Well: Borehole: UWI / API#: Survey Name: Survey Date: Tort / AHD / DDI / ERD Ratio: Grid Coordinate System: Location Lat / Long: Location Grid N/E Y/X: Grid Convergence Angle: Grid Scale Factor: February 25, :15 PM Survey / DLS Computation: OXY Permian Drilling Vertical Section Azimuth: TX Andrews County Vertical Section Origin: Oxy Drone Bee #1 / Oxy Drone Bee #1 TVD Reference Datum: Oxy Drone Bee #1 TVD Reference Elevation: Original Borehole Seabed / Ground Elevation: Unknown / Unknown Magnetic Declination: Oxy Drone Bee #1 Surveys 0ft to 9712ft SLB Total Field Strength: February 01, 2010 Magnetic Dip Angle: / ft / / Declination Date: NAD27 Texas State Plane, North Central Zone, US Feet Magnetic Declination Model: N 32 8' ", W ' " North Reference: N ftus, E ftus Grid Correction: Total Corr Mag North->Grid North: Local Coord Referenced To: Minimum Curvature / Lubinski 0 (Grid North) 0 ft, 0 ft RKB ft above MSL 3220 ft above MSL nt February 01, 2010 BGGM 2009 Grid North Well Head Comments MD (ft) Incl ( ) Azim Grid ( ) TVD (ft) TVDSS (ft) VSEC (ft) NS (ft) EW (ft) DLS ( /100ft) Northing (ftus) Easting (ftus) Latitude (N/S ' ") Longitude (E/W ' ") SHL N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W Last Precision MWD survey N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W N W Final Survey N W Projection to TD N W Survey Type: Def Survey Survey Error Model: ISCWSA Rev 0 *** 3-D % Confidence sigma Drilling Office Oxy Drone Bee #1\Oxy Drone Bee #1\Original Borehole\Oxy Drone Bee #1 Surveys 0ft to 9712ft SLB 2/25/2010 2:17 PM Page 1 of 2

85 Comments Survey Program: MD From (ft) MD (ft) MD To (ft) Incl ( ) Azim Grid ( ) TVD (ft) TVDSS (ft) VSEC (ft) NS (ft) EW (ft) DLS ( /100ft) EOU Freq Survey Tool Type Borehole / Survey Northing (ftus) Act Stns SLB_MWD-STD-Depth Only Original Borehole / Oxy Drone Bee #1 Surveys 0ft to 9712ft SLB Easting (ftus) Latitude (N/S ' ") Longitude (E/W ' ") Act Stns SLB_MWD-STD Original Borehole / Oxy Drone Bee #1 Surveys 0ft to 9712ft SLB Act Stns SLB_MWD-STD Original Borehole / Oxy Drone Bee #1 Surveys 0ft to 9712ft SLB Act Stns SLB_BLIND+TREND Original Borehole / Oxy Drone Bee #1 Surveys 0ft to 9712ft SLB Drilling Office Oxy Drone Bee #1\Oxy Drone Bee #1\Original Borehole\Oxy Drone Bee #1 Surveys 0ft to 9712ft SLB 2/25/2010 2:17 PM Page 2 of 2

86 Daily Drilling Reports

87 DAILY DRILLING REPORT No: 1 Date: 2/4/2010 Company: Oxy Well Name & No.: Drone Bee #1 Vertical Control Field: Devonian Rig Contractor & No.: H&P 370 County/Block/Parish: ECTOR, TX BHA No(s) Today: Depth (ft): Distance last 24 hrs (ft) Last CSG depth (ft): 3855 Size (in): MUD DATA Mud Type WBM Weight: 8.5 Viscocity: 28 PV: 1 YP: 1 WL: Gels: % Oil: % Solid:.9 % Sand: trc PH: 10 CL: 5400 BIT DATA No. Bit Size (in) Mfr Type Serial No. Noz. or TFA Gauge Length Cum (ft) Cum. Hours Depth Out DULL CONDITION (ft) IR OR DC LOC B/S G/16 OC RPLD MOTOR DATA / RUN DATA BHA No. Size (in) Type Deflection Serial Number Avg Diff. Tool Angle Press. Drill Hrs. Today Drill Hrs. Accum. Circ. Hrs. Today Circ. Hrs. Accum. Depth In (ft) Depth Out (ft) PUMP DATA Pump # Liner X Stroke gpm Max Allowable SPP TARGET DESCRIPTION / DETAILS TIME BREAKDOWN From HRS Code Description 4:00 1 ONC Other Non-circulating CONVENTIONAL DRILLING 5:00 19 ONC Other Non-circulating Mobilize Rig Up Inventory tools Rig drill to KOP for PowerV vortex 24 Hr Summary: Mobilize Proj svy at 0:00: NONE ENTERED Proj svy at 24:00: Bottom Hole Circulating Temp. (F): Formation Name/Depth: Remarks: SDM DIRECTIONAL REP: Melkan Thomas SDM MWD REP.: Celestin Tamdjo, Lucas Garrett COMPANY REP.: Gilbert / Mike Springer DAILY COST: $5,75 CUMMULATIVE COST: $5,75 SDM JOB #: 10SWB Page 1 of 2

88 Company: Field: Oxy Devonian County/Block/Parish: ECTOR, TX DAILY DRILLING REPORT Well Name & No.: Drone Bee #1 Vertical Control Rig Contractor & No.: H&P 370 BHA No(s) Today: 1 Depth (ft): 6841 Distance last 24 hrs (ft) 180 Last CSG depth (ft): 3855 Size (in): MUD DATA No: 2 Date: 2/5/2010 Mud Type Cut brine Weight: 8.5 Viscocity: 28 PV: 1 YP: 1 WL: Gels: % Oil: % Solid:.9 % Sand: trc PH: 10 CL: 5400 No. Bit Size (in) Mfr Type Serial No. Noz. or TFA Gauge Length BIT DATA Cum (ft) Cum. Hours Depth Out DULL CONDITION (ft) IR OR DC LOC B/S G/16 OC RPLD Sec FX CR N 0 I CR PP BHA Size (in) Type Deflection Serial Number Avg Diff. No. Tool Angle Press MOTOR DATA / RUN DATA Drill Hrs. Today Drill Hrs. Accum. Circ. Hrs. Today Circ. Hrs. Accum. Depth In (ft) 0M.29 rev Depth Out (ft) PUMP DATA Pump # Liner X Stroke gpm Max Allowable SPP TARGET DESCRIPTION / DETAILS TIME BREAKDOWN From HRS Code Description 0:00 8 ONC Other Non-circulating CONVENTIONAL DRILLING 8:00 1 ONC Other Non-circulating Pimp Sweep Monitor Well 9:00 3 ONC Other Non-circulating Trip out of Hole 12:00 2 ONC Other Non-circulating Lay Down Pathfinder tools 14: ONC Other Non-circulating Clean Floor 14:30 2 ONC Other Non-circulating Pick up PowerV Vortex MWD Bit 16: OC Other Circulating Test Tools Good Test 16: TI Tripping In (From Surface) T.I.H. fill every Stands 20: SVC Survey Circulating 6582 Inc Azi. S : OC Other Circulating Downlink to PowerDrive 21:00 1 ROT Rotary Drill fr: 6661 to Hr Summary: Drill Vertical Control w/powerv Vortex Proj svy at 0:00: Proj svy at 24:00: Bottom Hole Circulating Temp. (F): Formation Name/Depth: Remarks: Meeting- Every 7am Conference Call with Oxy (Co. Man Office) Shift 5:45am/pm each Tower (Change Out Room) Safety 8, 12, 4 each Tower ( Dog house) SDM DIRECTIONAL REP: Melkan Thomas SDM MWD REP.: Celestin Tamdjo, Lucas Garrett COMPANY REP.: Gilbert Zapata / Mike Springer DAILY COST: $29,67 CUMMULATIVE COST: $35,42 SDM JOB #: 10SWB0045 Page 1 of 2

89 Company: Field: County/Block/Parish: Oxy Devonian DAILY DRILLING REPORT Well Name & No.: Drone Bee #1 Vertical Control Rig Contractor & No.: H&P 370 BHA No(s) Today: 1 No: 2 Date: 2/5/2010 Depth (ft): 6841 Distance last 24 hrs (ft) 180 Last CSG depth (ft): 3855 Size (in): : SVC Survey Circulating 6627 Inc.5.37 Azi :15 1 ROT Rotary Drill fr: 6711 to : SVC Survey Circulating 6722 Inc.5.59 Azi : ROT Rotary Drill fr: 6807 to Page 2 of 2

90 Company: Field: Oxy Devonian County/Block/Parish: ECTOR, TX DAILY DRILLING REPORT Well Name & No.: Drone Bee #1 Vertical Control Rig Contractor & No.: H&P 370 BHA No(s) Today: 1 Depth (ft): 8180 Distance last 24 hrs (ft) 1339 Last CSG depth (ft): 3855 Size (in): MUD DATA No: 3 Date: 2/6/2010 Mud Type Cut Brin Weight: 9.1 Viscocity: 31 PV: 2 YP: 5 WL: Gels: 2/2/2 % Oil: % Solid:.7 % Sand: trc PH: 11.5 CL: 7400 No. Bit Size (in) Mfr Type Serial No. Noz. or TFA Gauge Length BIT DATA Cum (ft) Cum. Hours Depth Out DULL CONDITION (ft) IR OR DC LOC B/S G/16 OC RPLD Sec FX CR N 0 I CR PP BHA Size (in) Type Deflection Serial Number Avg Diff. No. Tool Angle Press MOTOR DATA / RUN DATA Drill Hrs. Today Drill Hrs. Accum. Circ. Hrs. Today Circ. Hrs. Accum. Depth In (ft) 0M.29 rev Depth Out (ft) PUMP DATA Pump # Liner X Stroke gpm Max Allowable SPP TARGET DESCRIPTION / DETAILS TIME BREAKDOWN From HRS Code Description 0: ROT Rotary Drill fr: 6841 to : SVC Survey Circulating 6816 Inc.5.88 Azi :00 2 ROT Rotary Drill fr: 6901 to : SVC Survey Circulating C/S@ 6911Inc.6.87 Azi : ROT Rotary Drill fr: 6995 to : SVC Survey Circulating Survey@ 6963 Inc.6.81 Azi :45 1 ROT Rotary Drill fr: 7044 to : SVC Survey Circulating 7007 Inc.6.54 Azi : ROT Rotary Drill fr: 7089 to : SVC Survey Circulating 7101 Inc Azi : ROT Rotary Drill fr: 7183 to Hr Summary: Drill Vertical Control w/powerv Vortex Proj svy at 0:00: Proj svy at 24:00: Bottom Hole Circulating Temp. (F): 115 Formation Name/Depth: Remarks: Meeting- Every 7am Conference Call with Oxy (Co. Man Office) Shift 5:45am/pm each Tower (Change Out Room) Safety 8, 12, 4 each Tower ( Dog house) SDM DIRECTIONAL REP: Melkan Thomas, Tony Lawal SDM MWD REP.: Celestin Tamdjo, Lucas Garrett COMPANY REP.: Gilbert Zapata / Mike Springer DAILY COST: $20,42 CUMMULATIVE COST: $55,84 SDM JOB #: 10SWB0045 Page 1 of 2

91 Company: Field: County/Block/Parish: Oxy Devonian DAILY DRILLING REPORT Well Name & No.: Drone Bee #1 Vertical Control Rig Contractor & No.: H&P 370 BHA No(s) Today: 1 No: 3 Date: 2/6/2010 Depth (ft): 8180 Distance last 24 hrs (ft) 1339 Last CSG depth (ft): 3855 Size (in): : SVC Survey Circulating 7194 Inc.6.01 Azi : ROT Rotary Drill fr: 7275 to : SVC Survey Circulating 7287 Inc.5.55 Azi :45 1 ROT Rotary Drill fr: 7369 to : SVC Survey Circulating 7380 Inc.5.08 Azi : ROT Rotary Drill fr: 7463 to Dolomite & 10 Chert 13: RIGS Rig Service 14: SVC Survey Circulating 7477 Inc.4.43 Azi : ROT Rotary Drill fr: 7559 to : SVC Survey Circulating 7664 Inc Azi : ROT Rotary Drill fr: 7748 to 7932 Rotate 20: SVC Survey Circulating Inc Azi : ROT Rotary Drill fr: 7932 to 8119 Rotate 23: SVC Survey Circulating 8039 Inc Azi : ROT Rotary Drill fr: 8119 to 8180 Rotate Page 2 of 2

92 Company: Field: Oxy Devonian County/Block/Parish: ECTOR, TX DAILY DRILLING REPORT Well Name & No.: Drone Bee #1 Vertical Control Rig Contractor & No.: H&P 370 BHA No(s) Today: 1 Depth (ft): 8683 Distance last 24 hrs (ft) 503 Last CSG depth (ft): 3855 Size (in): MUD DATA No: 4 Date: 2/7/2010 Mud Type Cut Brin Weight: 9.4 Viscocity: 38 PV: 2 YP: 5 WL: 8 Gels: 2/2/2 % Oil: % Solid:.7 % Sand: trc PH: 11.5 CL: No. Bit Size (in) Mfr Type Serial No. Noz. or TFA Gauge Length BIT DATA Cum (ft) Cum. Hours Depth Out DULL CONDITION (ft) IR OR DC LOC B/S G/16 OC RPLD Sec FX CR N 0 I CR PP BHA Size (in) Type Deflection Serial Number Avg Diff. No. Tool Angle Press MOTOR DATA / RUN DATA Drill Hrs. Today Drill Hrs. Accum. Circ. Hrs. Today Circ. Hrs. Accum. Depth In (ft) 0M.29 rev Depth Out (ft) PUMP DATA Pump # Liner X Stroke gpm Max Allowable SPP TARGET DESCRIPTION / DETAILS TIME BREAKDOWN From HRS Code Description 0: ROT Rotary Drill fr: 8180 to 8306 Rotate 2: SVC Survey Circulating 8225 Inc Azi : ROT Rotary Drill fr: 8306 to 8406 Rotate 9: ROT Rotary Drill fr: 8406 to 8473 Rotate 100% Limestone 14: ROT Rotary Drill fr: 8473 to : SVC Survey Circulating 8218 Inc Azi : ROT Rotary Drill fr: 8500 to 8683 DL/ Magnetic 36/50% 24 Hr Summary: Drill Vertical Control w/powerdrive Vortex Proj svy at 0:00: Proj svy at 24:00: Bottom Hole Circulating Temp. (F): Formation Name/Depth: Remarks: Meeting- Every 7am Conference Call with Oxy (Co. Man Office) Shift 5:45am/pm each Tower (Change Out Room) Safety 8, 12, 4 each Tower ( Dog house) SDM DIRECTIONAL REP: Melkan Thomas, Tony Lawal SDM MWD REP.: Celestin Tamdjo, Lucas Garrett COMPANY REP.: Gilbert Zapata / Mike Springer DAILY COST: $24,68 CUMMULATIVE COST: $80,52 SDM JOB #: 10SWB Page 1 of 2

93 Company: Field: Oxy Devonian County/Block/Parish: ECTOR, TX DAILY DRILLING REPORT Well Name & No.: Drone Bee #1 Vertical Control Rig Contractor & No.: H&P 370 BHA No(s) Today: 1,2 Depth (ft): 8794 Distance last 24 hrs (ft) 111 Last CSG depth (ft): 3855 Size (in): MUD DATA No: 5 Date: 2/8/2010 Mud Type WBM Weight: 9.4 Viscocity: 52 PV: 15 YP: 29 WL: 7.4 Gels: 7/10/12 % Oil: % Solid: 3.0 % Sand: trc PH: 10 CL: No. Bit Size (in) Mfr Type Serial No. Noz. or TFA Gauge Length BIT DATA Cum (ft) Cum. Hours Depth Out DULL CONDITION (ft) IR OR DC LOC B/S G/16 OC RPLD Sec FX CR N 0 I CR PP Sec FX WT A X I BT PR BHA Size (in) Type Deflection Serial Number Avg Diff. No. Tool Angle Press MOTOR DATA / RUN DATA Drill Hrs. Today Drill Hrs. Accum. Circ. Hrs. Today Circ. Hrs. Accum. Depth In (ft) Depth Out (ft) 0M.29 rev M.29 rev PUMP DATA Pump # Liner X Stroke gpm Max Allowable SPP TARGET DESCRIPTION / DETAILS TIME BREAKDOWN From HRS Code Description 0: ROT Rotary Drill fr: 8683 to 8685 Rotate 0: SVC Survey Circulating 8604 Inc Azi :30 3 ROT Rotary Drill fr: 8685 to 8720 Rotate 3: SVC Survey Circulating 8637 Inc Azi :45 7 ROT Rotary Drill fr: 8720 to 8778 DL/ Gravity & 100/50% 10: SVC Survey Circulating 8697 Inc Azi : ROT Rotary Drill fr: 8778 to 8794 Downlink IH/25%L 12: CIRC Circulate Circulate Bottom Up 13: TO Tripping Out (To Surface) T.O.O.H w/ BHA 1 for Bit 17: ONC Other Non-circulating Inspect BHA / L/D Motor, Bit & MWD 18:45 1 ONC Other Non-circulating P/U Motor NOV change batteries to Black Box Hr Summary: Drill Vertical Control w/powerdrive Vortex Proj svy at 0:00: Proj svy at 24:00: Bottom Hole Circulating Temp. (F): Formation Name/Depth: Remarks: Meeting- Every 7am Conference Call with Oxy (Co. Man Office) Shift 5:45am / 5:45pm each Tower (Change Out Room) Safety 8, 12, 4 each Tower ( Dog house) SDM DIRECTIONAL REP: Melkan Thomas, Tony Lawal SDM MWD REP.: Celestin Tamdjo, Lucas Garrett / Gehl Mitt COMPANY REP.: Gilbert Zapata / Mike Springer DAILY COST: $24,68 CUMMULATIVE COST: $105,20 SDM JOB #: 10SWB0045 Page 1 of 2

94 Company: Field: County/Block/Parish: Oxy Devonian DAILY DRILLING REPORT Well Name & No.: Drone Bee #1 Vertical Control Rig Contractor & No.: H&P 370 BHA No(s) Today: 1,2 No: 5 Date: 2/8/2010 Depth (ft): 8794 Distance last 24 hrs (ft) 111 Last CSG depth (ft): 3855 Size (in): : OC Other Circulating SHT MWD to 350 GPM - ok 20: TI Tripping In (From Surface) TIH BHA #2 23: OC Other Circulating Tight spot. Wash F/ 7120 to Page 2 of 2

95 Company: Field: Oxy Devonian County/Block/Parish: ECTOR, TX DAILY DRILLING REPORT Well Name & No.: Drone Bee #1 Vertical Control Rig Contractor & No.: H&P 370 BHA No(s) Today: 2 Depth (ft): 9405 Distance last 24 hrs (ft) 611 Last CSG depth (ft): 3855 Size (in): MUD DATA No: 6 Date: 2/9/2010 Mud Type WBM Weight: 9.5 Viscocity: 52 PV: 16 YP: 24 WL: 6 Gels: 9 / 13/ 1 % Oil: % Solid: 2.5 % Sand: trc PH: 9.5 CL: 94,000 No. Bit Size (in) Mfr Type Serial No. Noz. or TFA Gauge Length BIT DATA Cum (ft) Cum. Hours Depth Out DULL CONDITION (ft) IR OR DC LOC B/S G/16 OC RPLD Sec FX WT A X I BT PR BHA Size (in) Type Deflection Serial Number Avg Diff. No. Tool Angle Press MOTOR DATA / RUN DATA Drill Hrs. Today Drill Hrs. Accum. Circ. Hrs. Today Circ. Hrs. Accum. Depth In (ft) Depth Out (ft) 0M.29 rev PUMP DATA Pump # Liner X Stroke gpm Max Allowable SPP TARGET DESCRIPTION / DETAILS TIME BREAKDOWN From HRS Code Description 0: TI Tripping In (From Surface) TIH BHA #2 1: OC Other Circulating Wash F/ ' 1: OC Other Circulating DL # 16 & # % STR 1: ROT Rotary Drill fr: 8794 to 8876 Rotate 3: SVC Survey Circulating 8791 Inc Azi : ROT Rotary Drill fr: 8876 to 9060 Rotate 6: SVC Survey Circulating 8980 Inc.0.89 Azi :00 2 ROT Rotary Drill fr: 9060 to % Shale 9:00 3 ROT Rotary Drill fr: 9154 to 9250 DL 180/100% 12: SVC Survey Circulating 9169 Inc.2.37 Azi : ROT Rotary Drill fr: 9250 to % Limestone-trace of chert Back weight off control drill ROP Hr Summary: Drill Vertical Control w/powerv Vortex Proj svy at 0:00: Proj svy at 24:00: Bottom Hole Circulating Temp. (F): Formation Name/Depth: Remarks: Meeting- Every 7am Conference Call with Oxy (Co. Man Office) Shift 5:45am / 5:45pm each Tower (Change Out Room) Safety 8, 12, 4 each Tower ( Dog house) SDM DIRECTIONAL REP: Melkan Thomas, Tony Lawal SDM MWD REP.: Gehl Mittelsted COMPANY REP.: Gilbert Zapata / Mike Springer DAILY COST: $20,18 CUMMULATIVE COST: $125,38 SDM JOB #: 10SWB0045 Page 1 of 2

96 Company: Field: County/Block/Parish: Oxy Devonian DAILY DRILLING REPORT Well Name & No.: Drone Bee #1 Vertical Control Rig Contractor & No.: H&P 370 BHA No(s) Today: 2 No: 6 Date: 2/9/2010 Depth (ft): 9405 Distance last 24 hrs (ft) 611 Last CSG depth (ft): 3855 Size (in): : ROT Rotary Drill fr: 9325 to : RIGS Rig Service 14: SVC Survey Circulating 9263 Inc.3.54 Azi : ROT Rotary Drill fr: 9344 to 9405 Rotate 18:30 1 CIRC Circulate Circulate btms Pump slug 19: TO Tripping Out (To Surface) POOH BHA # Page 2 of 2

97 Company: Field: Oxy Devonian County/Block/Parish: ECTOR, TX DAILY DRILLING REPORT Well Name & No.: Drone Bee #1 Vertical Control Rig Contractor & No.: H&P 370 BHA No(s) Today: 2,3 Depth (ft): 9514 Distance last 24 hrs (ft) 109 Last CSG depth (ft): 3855 Size (in): MUD DATA No: 7 Date: 2/10/2010 Mud Type WBM Weight: 9.5 Viscocity: 50 PV: 12 YP: 27 WL: 6 Gels: 9 /12 /16 % Oil: % Solid: 2.8 % Sand: trc PH: 10 CL: 90,000 No. Bit Size (in) Mfr Type Serial No. Noz. or TFA Gauge Length BIT DATA Cum (ft) Cum. Hours Depth Out DULL CONDITION (ft) IR OR DC LOC B/S G/16 OC RPLD Sec FX WT A X I BT PR Smith FHi37HY PP NO A 0 I NO TD BHA Size (in) Type Deflection Serial Number Avg Diff. No. Tool Angle Press MOTOR DATA / RUN DATA Drill Hrs. Today Drill Hrs. Accum. Circ. Hrs. Today Circ. Hrs. Accum. Depth In (ft) Depth Out (ft) 0M.29 rev M.29 rev PUMP DATA Pump # Liner X Stroke gpm Max Allowable SPP TARGET DESCRIPTION / DETAILS TIME BREAKDOWN From HRS Code Description 0:00 2 TO Tripping Out (To Surface) POOH BHA #2 2: OC Other Circulating Test PowerV. Test okay. The three pads look good. 2:30 1 ONC Other Non-circulating L/D PowerV. P/U new PowerV 3: OC Other Circulating Surface test new PowerV - Test okay 3: ONC Other Non-circulating P/U rest of the BHA #3 4: TI Tripping In (From Surface) TIH to 1109' 5: OC Other Circulating Test 124 SPM (558) 5: OC Other Circulating DL # 19 Gravity 5: OC Other Circulating DL # / 100% 5: TI Tripping In (From Surface) Trip in hole to 8156'MD 9: RMG Reaming Circulate Bottom Up Hr Summary: Drill Vertical Control w/powerv Vortex Proj svy at 0:00: Proj svy at 24:00: Bottom Hole Circulating Temp. (F): 118 Formation Name/Depth: Remarks: Meeting- Every 7am Conference Call with Oxy (Co. Man Office) Shift 5:45am / 5:45pm each Tower (Change Out Room) Safety 8, 12, 4 each Tower ( Dog house) SDM DIRECTIONAL REP: Melkan Thomas, Tony Lawal SDM MWD REP.: Gehl Mittelsted, Tyler Johnson COMPANY REP.: Chad Frazier / Mike Springer DAILY COST: $20,18 CUMMULATIVE COST: $145,56 SDM JOB #: 10SWB0045 Page 1 of 2

98 Company: Field: County/Block/Parish: Oxy Devonian DAILY DRILLING REPORT Well Name & No.: Drone Bee #1 Vertical Control Rig Contractor & No.: H&P 370 BHA No(s) Today: 2,3 No: 7 Date: 2/10/2010 Depth (ft): 9514 Distance last 24 hrs (ft) 109 Last CSG depth (ft): 3855 Size (in): : TI Tripping In (From Surface) Trip in hole to 8600'MD 10: RMG Reaming Stage in Hole 11: TI Tripping In (From Surface) Trip in hole to 9346'MD 11: RMG Reaming Stage in Hole 13: SVC Survey Circulating 9326 Inc.4.11 Azi : ROT Rotary Drill fr: 9405 to %Limestone 10% : RIGS Rig Service 17: SVC Survey Circulating 9357 Inc.4.25 Azi : ROT Rotary Drill fr: 9438 to 9472 Rotate 20: SVC Survey Circulating 9386 Inc.4.22 Azi : ROT Rotary Drill fr: 9472 to 9514 Rotate Page 2 of 2

99 Company: Field: Oxy Devonian County/Block/Parish: ECTOR, TX DAILY DRILLING REPORT Well Name & No.: Drone Bee #1 Vertical Control Rig Contractor & No.: H&P 370 BHA No(s) Today: 3 Depth (ft): 9712 Distance last 24 hrs (ft) 198 Last CSG depth (ft): 3855 Size (in): MUD DATA No: 8 Date: 2/11/2010 Mud Type WBM Weight: 9.5 Viscocity: 52 PV: 12 YP: 27 WL: 6 Gels: 9 /12 /16 % Oil: % Solid: 2.8 % Sand: trc PH: 10 CL: 90,000 No. Bit Size (in) Mfr Type Serial No. Noz. or TFA Gauge Length BIT DATA Cum (ft) Cum. Hours Depth Out DULL CONDITION (ft) IR OR DC LOC B/S G/16 OC RPLD Smith FHi37HY PP NO A 0 I NO TD BHA Size (in) Type Deflection Serial Number Avg Diff. No. Tool Angle Press CC 1333 MOTOR DATA / RUN DATA Drill Hrs. Today Drill Hrs. Accum. Circ. Hrs. Today Circ. Hrs. Accum. Depth In (ft) Depth Out (ft) 0M.29 rev PUMP DATA Pump # Liner X Stroke gpm Max Allowable SPP Silurian TARGET DESCRIPTION / DETAILS TIME BREAKDOWN From HRS Code Description 0:00 2 ROT Rotary Drill fr: 9514 to 9552 Rotate 100% : SVC Survey Circulating 9452 Inc.3.01 Azi : ROT Rotary Drill fr: 9552 to 9576 Rotate 100% : ROT Rotary Drill fr: 9576 to : ROT Rotary Drill fr: 9586 to 9591 Run pump 110 Spm Work on pump 2 10: ROT Rotary Drill fr: 9591 to 9626 Run both pump again 13: RIGS Rig Service 10%Limestone 90% Shale 13: SVC Survey Circulating 9546 Inc.0.34 Azi : ROT Rotary Drill fr: 9626 to :00 5 ROT Rotary Drill fr: 9634 to %Shale@ :00 1 OC Other Circulating Circ Btms up. Pump Slug Hr Summary: Drill Vertical Control w/powerv Vortex to 9712' Proj svy at 0:00: Proj svy at 24:00: Bottom Hole Circulating Temp. (F): Formation Name/Depth: Remarks: TD'ed well at 1900hrs SDM DIRECTIONAL REP: Melkan Thomas, Tony Lawal SDM MWD REP.: Gehl Mittelsted, Tyler Johnson COMPANY REP.: Chad Frazier / Mike Springer DAILY COST: $20,18 CUMMULATIVE COST: $165,74 SDM JOB #: 10SWB0045 Page 1 of 2

100 Company: Field: County/Block/Parish: Oxy Devonian DAILY DRILLING REPORT Well Name & No.: Drone Bee #1 Vertical Control Rig Contractor & No.: H&P 370 BHA No(s) Today: 3 No: 8 Date: 2/11/2010 Depth (ft): 9712 Distance last 24 hrs (ft) 198 Last CSG depth (ft): 3855 Size (in): :00 2 TO Tripping Out (To Surface) POOH F/ 9712 to 8000' 22:00 2 TO Tripping Out (To Surface) Pump slug. POOH (strap) F/8000 to 3800' Page 2 of 2

101 Company: Field: Oxy Devonian County/Block/Parish: ECTOR, TX DAILY DRILLING REPORT Well Name & No.: Drone Bee #1 Vertical Control Rig Contractor & No.: H&P 370 BHA No(s) Today: 3 Depth (ft): 9712 Distance last 24 hrs (ft) Last CSG depth (ft): 3855 Size (in): MUD DATA No: 9 Date: 2/12/2010 Mud Type WBM Weight: 9.5 Viscocity: 52 PV: 12 YP: 27 WL: 6 Gels: 9 /12 /16 % Oil: % Solid: 2.8 % Sand: trc PH: 10 CL: 90,000 No. Bit Size (in) Mfr Type Serial No. Noz. or TFA Gauge Length BIT DATA Cum (ft) Cum. Hours Depth Out DULL CONDITION (ft) IR OR DC LOC B/S G/16 OC RPLD Smith FHi37HY PP NO A 0 I NO TD BHA Size (in) Type Deflection Serial Number Avg Diff. No. Tool Angle Press CC 1333 MOTOR DATA / RUN DATA Drill Hrs. Today Drill Hrs. Accum. Circ. Hrs. Today Circ. Hrs. Accum. Depth In (ft) Depth Out (ft) 0M.29 rev PUMP DATA Pump # Liner X Stroke gpm Max Allowable SPP Silurian TARGET DESCRIPTION / DETAILS TIME BREAKDOWN From HRS Code Description 0: TO Tripping Out (To Surface) POOH BHA #3 2:30 1 ONC Other Non-circulating L/D SLB directional tool 3: ONC Other Non-circulating Load truck 24 Hr Summary: POOH. L/D SLB Tool Proj svy at 0:00: Proj svy at 24:00: NONE ENTERED Bottom Hole Circulating Temp. (F): Formation Name/Depth: Remarks: SDM DIRECTIONAL REP: Melkan Thomas, Tony Lawal SDM MWD REP.: Gehl Mittelsted, Tyler Johnson COMPANY REP.: Chad Frazier / Mike Springer DAILY COST: $18,98 CUMMULATIVE COST: $184,72 SDM JOB #: 10SWB Page 1 of 2

102 DAILY DRILLING REPORT No: 9 Date: 2/12/2010 Company: Oxy Well Name & No.: Drone Bee #1 Vertical Control Field: Devonian Rig Contractor & No.: H&P 370 County/Block/Parish: BHA No(s) Today: 3 Depth (ft): 9712 Distance last 24 hrs (ft) Last CSG depth (ft): 3855 Size (in): Page 2 of 2

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