DAILY OPERATIONS PARTNER 30 HOUR REPORT Date:

Transcription

1 OXY INC Report No: 1 Wellbore Top MD: Today's MD: Prev MD: PBMD: Current Formation: Current s: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form TestEMW: Supervisor 1: Supervisor 2: 0 ft Rig: 0 ft Progress: Rot Today: Avg ROP Today: H&P ft hr 0.0 fthr Ref Datum: Ground Elev: AFE MDDays: AFE Number: Lithology: Original 2, ft 9, days #0102 DFS: Daily Cost: Cum Cost: AFE Cost: $6,636 $6,636 $2,000,000 RIGGING DOWN MISC. EQUIPMENT, PREPARING TO MOVE RIG PICK UP RIG AT 18:00, CONTINUE RIGGING DOWN EQUIPMENT AND PREP DERRICK FOR SCOPE DOWN, SCOPE DOWN DERRICK CONTINUE RIGGING DOWN EQUIPMENT AND MOVE RIG TO VAQUERO UL 3221 CASINGWELL CONTROL PERSONNEL CARLTON COOLEY CODY SIRMONS JANICE CHIU Geologist: Oxy Personnel: 2 Contractor Personnel: 11 Total on Site: 13 HOOKLOAD & TORQUE Str Wt UpDn: Str Wt Rot: Torq Off Btm: Torq On Btm: MD Incl Azi HYDRAULICS Pump Rate: 0.0 Pump Press: 0 TVD SURVEY DATA (LAST 6) N-S E-W MUD GAS Avg Max Conn: Trip: Backgr: VS DLS Build BIT RECORD Size Manufacturer Model Serial No IADC Nozzles MD In MD Out I-O-D-L B-G-O-R Rot Cum Rot BIT OPERATING PARAMETERS TODAY Prog Cum Prog ROP Cum ROP WOB RPM minmax minmax TFA P Drop z Vel HHPSI Engineer: Sample From: Mud : Time MD: Temp: Rheology Temp: Viscosity: PV YP: Gels 10s10m30m: API WL: HTHP WL: Cake API HTHP: Solids Sol Corr: Oil Water: Oil Water % for OWR: Sand: Water Added: Oil Added: LGS: VG Meter: Comments: MUD DATA - MBT: ph: Pm Pom: Pf Mf: Chlorides: Ca++ K+: CaCl2: Cl- in water phase: Lime: ES: ECD: n K: Carbonate: Bicarbonate: Form Loss Cum Loss: Fluid Disch: Daily Mud Cost: Cum Mud Cost: 0.0 $0 $0 LAST OR CURRENT BHA Component OD ID Jts Length MUD PRODUCTS Product Number of Units Qty Used Units :58:46AM Page 1 of 2

2 OXY INC Report No: 1 From To OPERATIONS eration Details 18:00 22: MIRU LOCMOV RD P CONTINUE RIGGING DOWN AND STAGING EQUIPMENT FOR LOAD OUT. DRESS OUT AND PREPARE TO LOWER DERRICK 22:00 23: MIRU LOCMOV RD P CONDUCT PJSM WITH H&P SUPERINTENDENT AND OXY DSM WITH CREW ON LOWERING DERRICK AT NIGHT. LOWER DERRICK AND CATCH ON TRUCK. 23:00 0: MIRU LOCMOV RD P CONTINUE DRESSING OUT DERRICK WHILE LOWERED AND ON CATCH TRUCK FOR SEPERATION TOMORROW Total Time 6.00 OPERATIONS - NEXT DAY From To eration Details Total Time Safety Incident? N Environ Incident? N Days since Last RI: Days since Last LTA: Incident Comments: NO INCIDENTS, ACCIDENTS, OR POLLUTION IN LAST 24 HOURS. Other Remarks: Weather Comments: Directions to Vaquero UL #3221 From Fort Stocton, Texas, (Interstate 10 & FM1053), go East on Interstate 10 for 12.4 miles (Exit #272), the go south on University Rd (2.2 miles), the road will jog left for.5 miles then turn back South and travel (3.4 miles), Turn right and go West (2.6 Miles), Turn right and follow the road north to location (400 ft) LIFE FLIGHT COORDINATES: LAT LONG NAD 27 FLIGHT FOR LIFE AIR FLIGHT OXY DSM TRAILER: UNSAFE ACTS: 1 SAFE ACTS: 0 UNSAFE EQUIPMENT: 1 SWA'S:0 NEAR MISSES: 0 JSA'S: 3 SAFETY MEETINGS: 3 LOTO'S: 0 PERMITS TO WORK : 0 POWER LINE CHECKLIST: PRE SPUDRIG INSPECTION: HAZARD ID'S: 0 EP2 OBSERVATIONS: 0 BEST STOP CARD: OBSERVED EMPLOYEE NOT USING THREE POINT CONTACT WALKING UP STAIRS. STOPPED AND EXPLAINED HAZARDS NOT USING THREE POINT CONTACT. HE UNDERSTOOD AND JOB CONTINUED WITHOUT INCIDENT :58:46AM Page 2 of 2

3 OXY INC Report No: 4 Wellbore Top MD: Today's MD: Prev MD: PBMD: Current Formation Current s: 24-Hr Summary: 24-Hr Forecast: Last Casing: Next Casing: Last BOP Press Test: Form TestEMW: Supervisor 1: Supervisor 2: Engineer: 0 ft Rig: 0 ft Progress: 0 ft Rot Today: Avg ROP Today: RUSTLER@97.0 H&P ft hr 0.0 fthr DRILLING AHEAD SURFACE 385' W NO RETURNS. CONTINUE RIGGING UP. STRAP AND DRIFT BHA. MU 13.5" SURFACE BHA #1. RR(33015) ROL(040115) SPUDDRILL SURFACE INTERVAL. RUN 10-34" CASING. CASINGWELL CONTROL PERSONNEL CARLTON COOLEY SHAWN EICKERT JANICE CHIU Geologist: MICHELLE WRY Oxy Personnel: 2 Contractor Personnel 16 Total on Site: 18 HOOKLOAD & TORQUE Str Wt UpDn: Str Wt Rot: Torq Off Btm: Torq On Btm: MD Incl Ref Datum: Ground Elev: AFE MDDays: AFE Number: Original 2, ft 9, days #0102 DFS: Daily Cost: Cum Cost: AFE Cost: $30,723 $259,422 $2,000,000 Lithology: SAND GYPSUM DOLOMITE Azi HYDRAULICS Pump Rate: 0.0 Pump Press: 0 TVD SURVEY DATA (LAST 6) N-S E-W MUD GAS Avg Max Conn: Trip: Backgr: VS DLS Build BIT RECORD Size Manufacturer Model Serial No IADC Nozzles MD In MD Out I-O-D-L B-G-O-R Rot Cum Rot BIT OPERATING PARAMETERS TODAY Prog Cum Prog ROP Cum ROP WOB RPM minmax minmax TFA P Drop z Vel HHPSI MUD DATA - NOV Engineer: ROSS MEYER MBT: Sample From: SUCT ph: Mud : Time MD: Spud Mud 20:00.0 Pm Pom: Pf Mf: Temp: Rheology Temp: Viscosity: PV YP: Gels 10s10m30m: API WL: HTHP WL: Cake API HTHP: Solids Sol Corr: Oil Water: Oil Water % for OWR: Sand: Water Added: Oil Added: LGS: Chlorides: Ca++ K+: CaCl2: Cl- in water phase: Lime: ES: ECD: n K: Carbonate: Bicarbonate: Form Loss Cum Loss Fluid Disch: Daily Mud Cost: Cum Mud Cost: VG Meter: 0@3 0@6 0@100 1@200 3@300 6@600 Comments: <div>-while RIGGING UP BUILD THICK PMIX W LCM & BUILD PIT SYSTEM FOR VIS & PH ADDING LIME & SODA 0.0 lbmbbl , ppm $1,543 $2,343 LAST OR CURRENT BHA Component OD ID Jts Length MUD PRODUCTS Product Number of Units Qty Used Units Fiber Seal 1.00 each Lime 1.00 each 8.00 Mica Fine 1.00 each 1 NOV Carb Fine 1.00 each 1 NOV Gel 1.00 each 5 Soda Ash 1.00 each StarDrill AP 1.00 each 1.00 Transportation 1.00 each :50:27AM Page 1 of 3

4 OXY INC Report No: 4 OPERATIONS From To eration Details 0:00 6: MIRU LOCMOV RU P FILL MUD PITS. TEST STAND PIPE TO 1500 PSI. OK. UN-PIN ODS BOOM POLE. PERFORM OXY PRE SPUD WALK AROUND. SPOT RISERROTATING HEAD FOR WELDER. NOTE: NOTIFIED ISABEL WITH TRRC OF UP COMING SPUD, CASING RUN & 10:00 HRS, , JOB # :00 10: MIRU LOCMOV RU P RIG UP PVC LINES TO SHAKER TROUGH. BUILD SPUD MUD IN PITS. CHANGE OUT TOP DRIVE DIES. INSTALL 4.5" SAVER SUB, STABBING GUIDE. 10:30 18: MIRU LOCMOV RU P FABRICATE FLANGE & CONDUCTOR. JSA. NIPPLE UP CONDUCTOR AND WELD ON SAME. INSTALL FLOW LINE. FABRICATE FILL UP LINE AND INSTALL. RIG UP LINES TO SUPER CHOKE. 18:00 21: MIRU LOCMOV RU P INSTALL FLARE LINE. INSTALL MWD TRANSDUCER SENSOR ON STAND PIPE. CENTER CONDUCTOR WITH TURN BUCKLES. INSTALL CELLAR PUMP HOSES AND RUN HOSES TO RESERVE PIT. INSTALL MOUSEHOLE. SPOT BHA ON OFF DRILLER SIDE OF WRANGLER. STRAP SURFACE BHA #1. OXY ACCEPTED RIG FOR DAYWORK: :00 HRS. 21:30 22: MIRU SAFE PJSM P JSA. DISCUSS PICKING UP BHA WITH DIRECTIONAL, MWD, OXY DSM, H&P CREW. 22:00 0: MIRU TRIP BHA P MAKE UP 13.5" SURFACE BHA AS FOLLOWS: SMITH SDSi616 BIT 8" " UG 1.15 BEND (RPG: 0.166) 8.4' BIT TO BEND 8" SHOCK SUB IBS EXTREME MWD HANGER SUB 8" NMDC CROSSOVER (6-58" REG X 6 58" NC56) CROSSOVER ( NC56 X 4-12" XH) (6 JTS) 6.5" DRILL COLLARS (12 JTS) HWDP Total Time OPERATIONS - NEXT DAY From To eration Details 0:00 0: MIRU LOCMOV RU P SURFACE TEST MWD WITH GPMS: 450, PUMP PRESSURE: 450 PSI. OK MAKE UP 13-12" BIT. TRIP IN HOLE AND 115'. 0:30 1: SUDR DRILL MTRVER P SPUD SURFACE HOLE AT 00:30 HRS DRILL 13 12" SURF HOLE F 115' T 175'. = 60' (AVE ROP: 120 FPH) GPM: 400, ON BTM PSI: 800, OFF BTM PSI: 450, ON BTM TORQ: 4-8 K, OFF BTM TORQ: 3 K., SRPM: 50, WOB: 4-6K. NOTICED FLOW STEADILY DECREASING. NO RETURNS AT 175'. 1:00 1: SUDR CIRC CNDHOL P PUMPED (2) 25 PPB SWEEPS AROUND WITH NO SUCCESS. LCF BLEND, LCF FINE, MICA, CAL CARB. 1:30 6: SUDR DRILL MTRVER P DRILL 13 12" SURF HOLE F 175' T 385' = 210'' (AVE ROP: 40 FPH) GPM: 450, ON BTM PSI: 800, OFF BTM PSI: 450, ON BTM TORQ: 4-10 K, OFF BTM TORQ: 3 K., SRPM: 70, MMRPM: 74 WOB: 15-18K. DRILLING AHEAD WITH NO RETURNS. OCCASSIONALY HAVING TO STOP TO BUILD VOLUME IN PITS. (12) TRUCKS IN ROUTE HAULING FRESH WATER. Total Time 6.00 Safety Incident? N Environ Incident? N Incident Comments: INCIDENT - ROLLED ANKLE. Days since Last RI: Days since Last LTA Weather Comments: :50:27AM Page 2 of 3

5 OXY INC Report No: 4 Other Remarks: VAQUERO UL #3221 From Fort Stockton, Texas (Interstate 10 & FM 1053) go east on Interstate 10 for 12.4 miles (Exit #272), then go south on University Road (2.2 Miles) the road will jog left for (5 tenths) of a mile then turn back south and go (3.4 miles) turn right and go West (2.6 miles) turn right and follow road north to location (400 feet)! LIFE FLIGHT COORDINATES: LAT LONG NAD 27 FLIGHT FOR LIFE OXY DSM TRAILER: NOTIFICATIONS: NOTIFIED ISABEL WITH TRRC OF SPUD, CASING RUN & CEMENT 10:00 HRS) JOB #3527 UNSAFE ACTS: 10 SAFE ACTS: 0 UNSAFE EQUIPMENT: 0 SWA'S: 0 NEAR MISSES: 0 JSA'S: 20 SAFETY MEETINGS: 22 LOTO'S: 0 PERMITS TO WORK : 11 POWER LINE CHECKLIST: PRE SPUDRIG INSPECTION: HAZARD ID'S: 0 EP2 OBSERVATIONS: 0 BEST STOP CARD: OBSERVED CREW MEMBER WITHOUT RESPIRATOR ON WHILE MIXING CHEMICALS. STOPPED EMPLOYEE AND HAD HIM PUT ON HIS RESPIRATOR. TASK COMPLETED WITHOUT INCIDENT :50:27AM Page 3 of 3

6 OXY INC Report No: 10 Wellbore Top MD: Today's MD: Prev MD: PBMD: Current Formation Current s: 24-Hr Summary: 24-Hr Forecast: 0 ft Rig: 4615 ft Progress: 3813 ft Rot Today: Avg ROP Today: BRUSHY CANYON@4,570.0 CASINGWELL CONTROL Last Casing: 842ft Next Casing: 7,500ft Last BOP Press Test: Form TestEMW: FIT ppg Supervisor 1: Supervisor 2: Engineer: H&P ft hr 53.5 fthr DRILL 9 78" INTERVAL T 5,000'. TRIP BHA #2 DUE TO POOR ROP. CO BHA & TIH. DRILL F 3,813' T 4,615' (AVE ROP: 53 FPH) RR(040115) ROL(040315) DRILL 9 78" VERTICAL INTERVAL. PERSONNEL EDDIE BOND SHAWN EICKERT LINSAY EARLE Geologist: MICHELLE WRY Oxy Personnel: 2 Contractor Personnel 15 Total on Site: 17 Size Manufacturer HOOKLOAD & TORQUE kip kip Str Wt UpDn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model Ref Datum: Ground Elev: AFE MDDays: AFE Number: Original 2, ft 9, days #0102 DFS: Daily Cost: Cum Cost: AFE Cost: 5.97 $71,826 $939,085 $2,000,000 Lithology: 80% SAND, 10% SHALE, 10% LIMESTONE. 2,500.0 ft-lbf 6,000.0 ft-lbf HYDRAULICS Pump Rate: Pump Press: 2765 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 NATIONAL OILWELL N DSH716D-81 A M324 7x Nozzles MD In MD Out I-O-D-L B-G-O-R BAKER DP607X M323 5x15, 2x RO-S X-1-CT-PR BIT OPERATING PARAMETERS TODAY Rot Cum Rot Prog Cum Prog ROP Cum ROP WOB minmax RPM minmax TFA P Drop z Vel HHPSI MUD DATA - NOV Engineer: George Daily MBT: Sample From: SUCT ph: Mud : Time MD: Cut Brine 19:00 4,185.0 Pm Pom: Pf Mf: Temp: Rheology Temp: Viscosity: PV YP: Gels 10s10m30m: API WL: HTHP WL: Cake API HTHP: Solids Sol Corr: Oil Water: Oil Water % for OWR: Sand: Water Added: Oil Added: LGS: Chlorides: Ca++ K+: CaCl2: Cl- in water phase: Lime: ES: ECD: n K: Carbonate: Bicarbonate: Form Loss Cum Loss Fluid Disch: Daily Mud Cost: Cum Mud Cost: VG Meter:?@6 11@300 15@600 Comments: <div>4283 ft at time of report and drlg ahead. Made bit trip this morning without any problems. Added 4 more drill collars to drillstring MUD PRODUCTS 0.0 lbmbbl ,000 2, $1,703 $16,030 Product Number of Units Qty Used Units Barite 1.00 each 8 Caustic Soda 1.00 each 8.00 NOV Gel 1.00 each 4.00 Soap Stick 1.00 each 7 Soda Ash 1.00 each 9.00 StarDrill NP each 1.00 LAST OR CURRENT BHA BHA No: 3 : 3 MD In: 3854 ft Purpose: DRILL 9 78" VERTICAL HOLE MD Out: Component OD ID Jts Length HWDP DRILL COLLAR CROSSOVER NON-MAG SPIRAL DRILL COLLAR STRING STABILIZER NON-MAG SPIRAL DRILL COLLAR MULESHOE SUB FLOAT SUB STRING STABILIZER RSS (PUSH BIT) CROSSOVER FILTER SUB STRING STABILIZER Total Length: 1, ft Wt below Jars: 0.0 kip :17:35AM Page 1 of 3

7 OXY INC Report No: 10 OPERATIONS From To eration Details 0:00 3: INDR DRILL RSS P DRILL 9 78" INTERMEDIATE HOLE F 3,813' T 3,854'= 41' (AVE ROP: 14 FPH) GPM: , OFFON BTM PSI: 2, , DIFF: 280, SRPM: 50 + MRPM: 154 = BRPM 204, WOB: 30-45K, OFF BTM TORQ: 2.5K, ON BTM TORQ: 5-7K. PU 154K, SO: 140K, RTWT: 143K ROP SLOWING DESPITE VARYING DRILLING PARAMETERS. CALLED FS & ENGINEER. AGREED TO PULL BHA #2 DUE TO POOR ROP IN THE LOWER CAPITAN FORMATION (3,820' 75% DOLOMITE, 25% LIMESTONE). CIRCULATING INNER BRINE RESERVE PIT CURRENT MW 9.3 PPG, PH: 12, VIS: 31 3:00 3: INDR CIRC CNDHOL PT CIRCULATE 20 BBL HI VIS SWEEP WHILE BUILDING SLUG. FLOW CHECK WELL. DSM VERIFIED WELL STATIC PUMP SLUG 3:30 6: INDR TRIP DRILL PT JSA. TOH F 3,854' '. CHECKED FOR TOP OF HWDP. WELL STATIC. CONTINUED TRIP OUT OF HOLE F 1300' T 130'. MONITOR DISPLACEMENT ON TRIP TANKS - WELL TAKING CORRECT FLUID FOR P[IPE DISPLACEMENT NO OVERPULL NOTED DURING TRIP OUT OF HOLE. 6:00 9: INDR TRIP BHA PT HANDLE BHA - HOLD PJSM WITH RIG CREW, PATHFINDER DIRECTIONAL HANDS, & DSM ON LAYING OUT TOOLS BREAK & LAY OUT BIT #2 - CHECK POWER V TOOL - MAKE UP BIT # 3 - BREAK & LAY OUT MTR # 2 & MU MTR # 3 BIT #2 GRADED AS FOLLOWS: 4-8-RO-S-X-1-CT-PR MAKE UP 9 78" INTERMEDIATE BHA #3 AS FOLLOWS: NOV DSH716D-81 W 7 x 14'S FOR JETS TFA: SN: A (BIT #3, RUN #1) 2. POWER DRIVE 675 X6 CA 9 78" SLICK " STABILIZER (18" UNDER GAUGE) 4. FILTER SUB 5. CROSSOVER 6. SLB 6.75" G MUD MOTOR (REVGAL: 0.28) 7. NM STABILIZER (18" UNDER GAUGE) 8. FLOAT SUB 9. MULE SHOE 10. NMDC 11. NM STABILIZER (14" UNDER GAUGE) " NMDC 13. CROSS OVER 14. (15) 6 12" DC 15. (24) 4.5" HWDP ***NOTE*** SURFACE TEST 10 34" SHOE - GOOD TEST 9:30 11: INDR TRIP DRILL PT TIH F SURFACE TO 3203' (***NOTE*** SURFACE TEST 10 34" SHOE - GOOD TEST) MONITOR WELL ON TRIP TANKS - GAIN PROPER MUD FOR PIPE DISPLACEMENT HOLE CONDITION: SLICK 11:00 11: INDR SRFEQ RIGUP PT PULL TRIP NIPPLE & INSTALL ROTATING HEAD INSERT 11:30 12: INDR TRIP DRILL PT FINISH TRIP IN F 3203' TO 3854' - HAD CORRECT GAIN FOR PIPE DISPLACEMENT - HOLE CONDITION - SLICK ***NOTE***FILL 5800' & WR F 5800' TO 5854' AS PRECAUTION - NO FILL NOTICED ON BOTTOM 12:00 18: INDR DRILL RSS P DRILL 9 78" INTERMEDIATE HOLE F 3,854' T 4,140'= 286' (AVE ROP: 48 FPH) GPM: 530, OFFON BTM PSI: 2, , DIFF: 400, SRPM: 50 + MRPM: 154 = BRPM 204, WOB: 18 TO 21 K, OFF BTM TORQ: 2.5K, ON BTM TORQ: 5-7K. PU 162K, SO: 153K, RTWT: 157 K CIRCULATING INNER BRINE RESERVE PIT CURRENT MW 9.3 PPG, PH: 12, VIS: :17:35AM Page 2 of 3

8 OXY INC Report No: 10 From To eration Details 18:00 0: INDR DRILL RSS P DRILL 9 78" INTERMEDIATE HOLE F 4,140'' T 4,615'= 475' (AVE ROP: 79 FPH) GPM: 530, OFFON BTM PSI: 2, , DIFF: 400, SRPM: 50 + MRPM: 154 = BRPM 204, WOB: 18 TO 21 K, OFF BTM TORQ: 2.5K, ON BTM TORQ: 5-7K. PU 177K, SO: 154K, RTWT: 167 K CIRCULATING INNER BRINE RESERVE PIT CURRENT MW 9.3 PPG, PH: 12, VIS: 31 Total Time SURVEY DEPTH 4,534', INC: 0.09 DEG, AZM: , TVD: ' OPERATIONS - NEXT DAY From To eration Details 0:00 6: INDR DRILL RSS P DRILL 9 78" INTERMEDIATE HOLE F 4,615'' T 5,000'= 385' (AVE ROP: 64 FPH) GPM: 530, OFFON BTM PSI: 2, , DIFF: 400, SRPM: 50 + MRPM: 154 = BRPM 204, WOB: 20 TO 25 K, OFF BTM TORQ: 2.5K, ON BTM TORQ: 5-9K. PU 177K, SO: 154K, RTWT: 167 K CIRCULATING INNER BRINE RESERVE PIT CURRENT MW 9.3 PPG, PH: 12, VIS: 31 Total Time 6.00 Safety Incident? N Environ Incident? Incident Comments: No incidents reported last 24 hours. Other Remarks: N Days since Last RI: Days since Last LTA - SURVEY DEPTH: 4,816', INC: 0.26 DEG, AZM: TVD: 4,815' Weather Comments: VAQUERO UL #3221 From Fort Stockton, Texas (Interstate 10 & FM 1053) go east on Interstate 10 for 12.4 miles (Exit #272), then go south on University Road (2.2 Miles) the road will jog left for (5 tenths) of a mile then turn back south and go (3.4 miles) turn right and go West (2.6 miles) turn right and follow road north to location (400 feet)! LIFE FLIGHT COORDINATES: LAT LONG NAD 27 FLIGHT FOR LIFE OXY DSM TRAILER: NOTIFICATIONS: NOTIFIED ISABEL WITH TRRC OF SPUD, CASING RUN & CEMENT 10:00 HRS) JOB #3527 NOTIFIED BRENDA OPERATOR #13 WITH TRRC OF SURFACE CASING RUN & CEMENT 08:00 HRS) JOB #3527 UNSAFE ACTS: 10 SAFE ACTS: 0 UNSAFE EQUIPMENT: 0 SWA'S: 0 NEAR MISSES: 0 JSA'S: 19 SAFETY MEETINGS: 21 LOTO'S: 0 PERMITS TO WORK : 9 POWER LINE CHECKLIST: PRE SPUDRIG INSPECTION: HAZARD ID'S: 0 EP2 OBSERVATIONS: 0 BEST STOP CARD: OBSERVED THIRD PARTY INSIDE BUFFER ZONE WHILE PICKING UP DIRECTIONAL EQUIPMENT. STOPPED TUGGER OPERATIONS AND HAD THIRD PARTY CLEAR AREA AND DISCUSSED HAZARDS WITH EMPLOYEE LATER. PICKING UP BHA COMPLETED WITHOUT INCIDENT :17:35AM Page 3 of 3

9 OXY INC Report No: 11 Wellbore Top MD: Today's MD: Prev MD: PBMD: Current Formation Current s: 24-Hr Summary: 24-Hr Forecast: 0 ft Rig: 5104 ft Progress: 4615 ft Rot Today: Avg ROP Today: BRUSHY CANYON@4,570.0 CASINGWELL CONTROL Last Casing: 842ft Next Casing: 7,500ft Last BOP Press Test: Form TestEMW: FIT ppg Supervisor 1: Supervisor 2: Engineer: H&P ft 8.50 hr 57.5 fthr DRILLING 9 78" 5,341'. DRILL 9 78" INTERVAL T 5,000'. TRIP FOR MOTOR. TIH & DRILL F 5,000' - 5,104'. RR(040115) ROL(040315) DRILL 9 78" VERTICAL INTERVAL. PERSONNEL EDDIE BOND SHAWN EICKERT LINSAY EARLE Geologist: MICHELLE WRY Oxy Personnel: 3 Contractor Personnel 15 Total on Site: 18 Size Manufacturer HOOKLOAD & TORQUE kip kip Str Wt UpDn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model Ref Datum: Ground Elev: AFE MDDays: AFE Number: Original 2, ft 9, days #0102 DFS: Daily Cost: Cum Cost: AFE Cost: 6.97 $58,026 $1,021,075 $2,000,000 Lithology: 70% SAND, 25% SHALE, 15% 5,060'. 2,500.0 ft-lbf 7,500.0 ft-lbf HYDRAULICS Pump Rate: Pump Press: 2245 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 SMITH MSI713HUPX JJ9852 M323 2x13, 8x Nozzles MD In MD Out NATIONAL OILWELL N DSH716D-81 A M324 7x JD-A I-O-D-L B-G-O-R X-1-CT-DTF BIT OPERATING PARAMETERS TODAY Rot Cum Rot Prog Cum Prog ROP Cum ROP WOB minmax RPM minmax TFA P Drop z Vel HHPSI MUD DATA - NOV Engineer: George Daily MBT: Sample From: PIT ph: Mud : Time MD: Cut Brine 19:33 5,032.0 Pm Pom: Pf Mf: Temp: Rheology Temp: Viscosity: PV YP: Gels 10s10m30m: API WL: HTHP WL: Cake API HTHP: Solids Sol Corr: Oil Water: Oil Water % for OWR: Sand: Water Added: Oil Added: LGS: Chlorides: Ca++ K+: CaCl2: Cl- in water phase: Lime: ES: ECD: n K: Carbonate: Bicarbonate: Form Loss Cum Loss Fluid Disch: Daily Mud Cost: Cum Mud Cost: VG Meter:?@6 9@300 13@600 Comments: <div>5032 ft and TIH at time of report. Made trip today to change out locked up mud motor. Tripped back in with a Smith Bit. No MUD PRODUCTS 0.0 lbmbbl ,000 2, $1,004 $17,035 Product Number of Units Qty Used Units Lime 1.00 each NOV Salt Gel 1.00 each 5 Soap Stick 1.00 each 2 StarDrill AP 1.00 each 5.00 LAST OR CURRENT BHA BHA No: 4 : 4 MD In: 5032 ft Purpose: DRILL 9 78" VERTICAL HOLE MD Out: Component OD ID Jts Length HWDP DRILL COLLAR CROSSOVER NON-MAG SPIRAL DRILL COLLAR STRING STABILIZER NON-MAG SPIRAL DRILL COLLAR MULESHOE SUB FLOAT SUB STRING STABILIZER STEERABLE MOTOR PDC BIT Total Length: 1, ft Wt below Jars: 0.0 kip :57:45AM Page 1 of 4

10 OXY INC Report No: 11 OPERATIONS From To eration Details 0:00 6: INDR DRILL RSS P DRILL 9 78" INTERMEDIATE HOLE F 4,615' T 5,000'= 385' (AVE ROP: 64 FPH) GPM: 530, OFFON BTM PSI: 2, , DIFF: 400, SRPM: 50 + MRPM: 154 = BRPM 204, WOB: 20 TO 25 K, OFF BTM TORQ: 2.5K, ON BTM TORQ: 5-9K. PU 177K, SO: 154K, RTWT: 167 K CIRCULATING INNER BRINE RESERVE PIT CURRENT MW 9.3 PPG, PH: 12, VIS: 31 - SURVEY DEPTH: 4,816', INC: 0.26 DEG, AZM: TVD: 4,815' 6:00 7: INDR DRILL RSS P DRILL 9 78" INTERMEDIATE HOLE F 5,000' T 5,032'= 32' (AVE ROP: 21 FPH) GPM: 530, OFFON BTM PSI: 2, , DIFF: 400, SRPM: 50 + MRPM: 154 = BRPM 204, WOB: 20 TO 25 K, OFF BTM TORQ: 2.5K, ON BTM TORQ: 5-9K. PU 177K, SO: 154K, RTWT: 167 K CIRCULATING INNER BRINE RESERVE PIT CURRENT MW 9.2 PPG, PH: 12, VIS: 30 - SURVEY DEPTH: 4,816', INC: 0.26 DEG, AZM: TVD: 4,815' ***NOTE*** MOTOR STARTED 5020' - AFTER SEVERAL SPIKES - MTR STALLED - HAD TO SLOW PUMP RATE TO 270 GPM WITH 3500 PSI OFF BOTTOM PRESSURE 7:30 8: INDR CIRC CNDHOL PT ATTEMPT SEVERAL TIMES TO TAG BOTTOM W REDUCED PUMP RATE TO FREE MOTOR W NO SUCCESS CONTINUE CIRC WHILE CALLS MADE TO DE & FDS - DECESION MADE TO TRIP OUT 8:30 10: INDR TRIP DRILL PT TRIP OUT OF HOLE FROM 5032' TO 1318' DUE TO MTR FAILURE MONITOR DISPLACEMENT ON TRIP TANKS - WELL TAKING CORRECT FLUID FOR PIPE DISPLACEMENT NO OVERPULL NOTED DURING TRIP OUT OF HOLE. 10:30 11: INDR SRFEQ RIGUP PT PULL ROTATING HEAD INSERT & INSTALL TRIP NIPPLE 11:00 12: INDR TRIP DRILL PT TRIP OUT FROM 1318' TO DIRECTIONAL 134' MONITOR DISPLACEMENT ON TRIP TANKS - WELL TAKING CORRECT FLUID FOR PIPE DISPLACEMENT NO OVERPULL NOTED DURING TRIP OUT OF HOLE. 12:30 14: INDR TRIP BHA PT HANDLE BHA - HOLD PJSM WITH RIG CREW, PATHFINDER DIRECTIONAL HANDS, & DSM ON LAYING OUT TOOLS BREAK & LAY OUT BIT #3,POWER V TOOL, MUD MTR & MWD PROBE BIT #3 GRADED AS FOLLOWS: 4-4-JD-A-X-1-CT-DTF ***NOTE***AFTER GETTING OUT, NOTICED POWER V-TOOL WAS DAMAGED AND MOTOR WAS LOCKED UP - TOOK 8 K FTLBS TO TURN MTR & DRAIN SAME, ALSO BIT HAD SIGNS OF JUNK DAMAGE 14:00 14: INDR RIGMT SRVRIG PT SERVICE RIG & RELATED EQUIPMENT 14:30 15: INDR WAIT OTH PT CALLS MADE TO DE, FDS AND DISCUSSED OPTIONS - DECESION MADE TO LAY OUT POWER V & TRIP IN W STERRABLE ASSEMBLY TO FINISH DRILLIN 9 78" INTERMEDIATE HOLE STRAP TOOLS & MAKE UP NEW MWD TOOL 15:30 16: INDR SAFE PJSM PT HOLD PJSM WITH RIG CREW, PATHFINDER DIRMWD HANDS, & DSM ON PICKING UP BHA # :57:45AM Page 2 of 4

11 OXY INC Report No: 11 From To eration Details 16:00 19: INDR TRIP BHA PT MAKE UP 9 78" INTERMEDIATE BHA #4 AS FOLLOWS: SMITH MS713HUPX W 8 x 12'S & 2 x 13'S FOR JETS TFA: SN: JJ9852 (BIT #4, RUN #1) 2. SLB 6.75" G MUD MOTOR (REVGAL: 0.28) " STABILIZER (18" UNDER GAUGE) 4. FILTER SUB 5. CROSSOVER 6. SLB 6.75" G MUD MOTOR (REVGAL: 0.28) 7. NM STABILIZER (18" UNDER GAUGE) 8. FLOAT SUB 9. MULE SHOE 10. NMDC 11. NM STABILIZER (14" UNDER GAUGE) " NMDC 13. CROSS OVER 14. (15) 6 12" DC 15. (24) 4.5" HWDP ***NOTE*** SURFACE TEST MWDMTR - GOOD TEST 19:30 21: INDR TRIP DRILL PT PJSM. TIH F SURFACE TO 3,650' (***NOTE*** TEST 10 34" SHOE - GOOD TEST) 21:00 21: INDR SRFEQ RIGUP PT INSTALL ROTATING HEAD. 21:30 22: INDR TRIP DRILL PT PJSM. TIH F 3,650' TO 4,999' MONITOR WELL ON TRIP TANKS - GAIN PROPER MUD FOR PIPE DISPLACEMENT HOLE CONDITION: SLICK MONITOR WELL ON TRIP TANKS - GAIN PROPER MUD FOR PIPE DISPLACEMENT HOLE CONDITION: SLICK 22:00 23: INDR CIRC CNDHOL PT WASH TO BOTTOM F 4,999' - 5,032'. TAG BOTTOM AND PICK UP AND CIRCULATE W 550 GPM, SURFACE RPM: 50. SCHLUMBERGER MWD REPROGRAMMED MWD TOOL. 23:00 0: INDR DRILL MTRVER P DRILL 9 78" INTERMEDIATE HOLE F 5,032' T 5,104'= 72' (AVE ROP: 72 FPH) GPM: , OFFON BTM PSI:1,885 2,400, DIFF: 415, SRPM: MRPM: 154 = BRPM 204, WOB: 10 TO 25 K, OFF BTM TORQ: 3K, ON BTM TORQ: 6-9K. NOTE: SLB MWD RECORDING HIGH TO SEVERE DOWNHOLE VIBRATIONS. SLB OFFSET FIELD DATA SHOWS HIGH VIBRATIONS IN AREA. CALLED OXY ENGINEERING. ADJUSTED WOB (10-20K), SRPM (45-60), FLOW RATE ( ). FOUND LOWEST DOWNHOLE VIBRATIONS WITH WOB: 16K, SRPM: 50, FLOW RATE: 530 GPM'S. PU 177K, SO: 168K, RTWT: 166 K CIRCULATING INNER BRINE RESERVE PIT CURRENT MW 9.3 PPG, PH: 11, VIS: 30 Total Time SURVEY DEPTH: 4,816', INC: 0.26 DEG, AZM: TVD: 4,815' :57:45AM Page 3 of 4

12 OXY INC Report No: 11 OPERATIONS - NEXT DAY From To eration Details 0:00 2: INDR DRILL MTRVER P DRILL 9 78" INTERMEDIATE HOLE F 5,104' T 5,249'= 145' (AVE ROP: 58 FPH) GPM: 530, OFFON BTM PSI:1695 2,245, DIFF: 4-550, SRPM: 50 + MRPM: 148 = BRPM 198, WOB: 18 K, OFF BTM TORQ: 3K, ON BTM TORQ: 6-9K. ATTEMPT TO TAKE SURVEY. ABLE TO OBTAIN PU 178K, SO: 168K, RTWT: 167 K CIRCULATING INNER BRINE RESERVE PIT CURRENT MW 9.3 PPG, PH: 11, VIS: 30 2:30 4: INDR DRILL MTRVER PT NPT MWD - UNABLE TO OBTAIN RAW SURVEY DATA AS PER OXY REQUIREMENTS. MWD TOOL BECAME PROGRAMMED INTO AUTO CALCULATE MODE VS OXY RAW SURVEY MODE. MWD TROUBLESHOOTING WITH SCHLUMBERGER CONTROL CENTER AND UNABLE TO RE PROGRAM TOOL FROM SURFACE. CALLED OXY ENGINEERING AND DECIDED TO DRILL AHEAD WHILE SCHLUMBERGER CONTINUES TO TRY TO TROUBLESHOOT THE ISSUE. 4:00 6: INDR DRILL MTRVER PT DRILL 9 78" INTERMEDIATE HOLE F 5,249' T 5,341'= 92' (AVE ROP: 46 FPH) GPM: 530, OFFON BTM PSI:1695 2,245, DIFF: 4-550, SRPM: 50 + MRPM: 148 = BRPM 198, WOB: 18 K, OFF BTM TORQ: 3K, ON BTM TORQ: 6-9K. PU 178K, SO: 168K, RTWT: 167 K Total Time 6.00 Safety Incident? N Environ Incident? Incident Comments: No incidents reported last 24 hours. Other Remarks: N Days since Last RI: Days since Last LTA CIRCULATING INNER BRINE RESERVE PIT CURRENT MW 9.3 PPG, PH: 11, VIS: Weather Comments: VAQUERO UL #3221 From Fort Stockton, Texas (Interstate 10 & FM 1053) go east on Interstate 10 for 12.4 miles (Exit #272), then go south on University Road (2.2 Miles) the road will jog left for (5 tenths) of a mile then turn back south and go (3.4 miles) turn right and go West (2.6 miles) turn right and follow road north to location (400 feet)! LIFE FLIGHT COORDINATES: LAT LONG NAD 27 FLIGHT FOR LIFE OXY DSM TRAILER: NOTIFICATIONS: NOTIFIED ISABEL WITH TRRC OF SPUD, CASING RUN & CEMENT 10:00 HRS) JOB #3527 NOTIFIED BRENDA OPERATOR #13 WITH TRRC OF SURFACE CASING RUN & CEMENT 08:00 HRS) JOB #3527 UNSAFE ACTS: 10 SAFE ACTS: 0 UNSAFE EQUIPMENT: 0 SWA'S: 0 NEAR MISSES: 0 JSA'S: 19 SAFETY MEETINGS: 21 LOTO'S: 1 PERMITS TO WORK : 6 POWER LINE CHECKLIST: PRE SPUDRIG INSPECTION: HAZARD ID'S: 0 EP2 OBSERVATIONS: 0 BEST STOP CARD: OBSERVED TUGGER OPERATOR PREPARING TO OPERATE TUGGER AND PIPE WRANGLER. STOPPED HIM AND MADE HIM AWARE OF SIMOPS WITH THESE TWO PIECES OF EQUIPMENT. HE AGREED. 2ND EMPLOYEE HELPED RUNNING THE HOIST. THE BHA WAS PICKED UP WITHOUTH INCIDENT :57:45AM Page 4 of 4

13 OXY INC Report No: 13 Wellbore Top MD: Today's MD: Prev MD: PBMD: Current Formation Current s: 24-Hr Summary: 24-Hr Forecast: 0 ft Rig: 6637 ft Progress: 5924 ft Rot Today: Avg ROP Today: LEONARD@6,370.0 CASINGWELL CONTROL Last Casing: 842ft Next Casing: 7,500ft Last BOP Press Test: Form TestEMW: FIT ppg Supervisor 1: Supervisor 2: Engineer: H&P ft hr 30.3 fthr LD BHA #4 (BIT & MOTOR). DRILL 9 78" INTERVAL F 5,924' T 6,637'. RR(040115) ROL(040315) DRILL 9 78" VERTICAL INTERVAL. PERSONNEL EDDIE BOND SHAWN EICKERT JANICE CHIU Geologist: MICHELLE WRY Oxy Personnel: 3 Contractor Personnel 17 Total on Site: 20 Size Manufacturer HOOKLOAD & TORQUE kip kip Str Wt UpDn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model Ref Datum: Ground Elev: AFE MDDays: AFE Number: Original 2, ft 9, days #0102 DFS: Daily Cost: Cum Cost: AFE Cost: 8.97 $43,663 $1,114,213 $2,000,000 Lithology: MIDDLE LEONARD: 80% SHALE, 20% SAND. 3,700.0 ft-lbf 7,800.0 ft-lbf HYDRAULICS Pump Rate: Pump Press: 2355 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 SMITH MSI713HUPX JJ9852 M323 2x13, 8x Nozzles MD In MD Out I-O-D-L B-G-O-R BIT OPERATING PARAMETERS TODAY Rot Cum Rot Prog Cum Prog ROP Cum ROP WOB minmax RPM minmax TFA P Drop z Vel HHPSI MUD DATA - NOV Engineer: George Daily MBT: Sample From: SUCT ph: Mud : Time MD: Cut Brine 19:24 6,115.0 Pm Pom: Pf Mf: Temp: Rheology Temp: Viscosity: PV YP: Gels 10s10m30m: API WL: HTHP WL: Cake API HTHP: Solids Sol Corr: Oil Water: Oil Water % for OWR: Sand: Water Added: Oil Added: LGS: Chlorides: Ca++ K+: CaCl2: Cl- in water phase: Lime: ES: ECD: n K: Carbonate: Bicarbonate: Form Loss Cum Loss Fluid Disch: Daily Mud Cost: Cum Mud Cost: VG Meter:?@6 11@300 15@600 Comments: <div>6464 ft at time of report and drlg ahead. The last 24 hrs we have beed been drlg with WOB of 18k to 21k. We have up'ed the MUD PRODUCTS 0.0 lbmbbl ,000 2,000 Product Number of Units Qty Used Units Lime 1.00 each 7.00 NOV Salt Gel 1.00 each Soap Stick 1.00 each 1 Soda Ash 1.00 each 2.00 StarDrill NP each 5.00 LAST OR CURRENT BHA BHA No: 4 : 4 MD In: 5032 ft Purpose: DRILL 9 78" VERTICAL HOLE MD Out: Component OD ID Jts Length HWDP DRILL COLLAR CROSSOVER NON-MAG SPIRAL DRILL COLLAR STRING STABILIZER NON-MAG SPIRAL DRILL COLLAR MULESHOE SUB FLOAT SUB STRING STABILIZER STEERABLE MOTOR PDC BIT $999 $19,404 Total Length: 1, ft Wt below Jars: 0.0 kip :51:48AM Page 1 of 3

14 OXY INC Report No: 13 OPERATIONS From To eration Details 0:00 6: INDR DRILL MTRVER P DRILL 9 78" INTERMEDIATE HOLE F 5,924' T0 6,099'= 175' (AVE ROP: 31 FPH) GPM: 530, OFFON BTM PSI: 1,790 2,250, DIFF: 460, SRPM: 50 + MRPM: 154 = BRPM 204, WOB: 21 K, OFF BTM TORQ: 3.2K, ON BTM TORQ: 7.3K. PU 193K, SO: 183K, RTWT: 189 K SLIDE: 6,005' - 6,030' TOOLFACE: 25 MAG (2.5 HRS) SLIDE FTG = 10 FPH = 14% FTG & 42% TIME CIRCULATING INNER BRINE RESERVE PIT CURRENT MW 9.2 PPG, PH: 10, VIS: 30 - SURVEY DEPTH: 5,947', INC: 3.52 DEG, AZM: TVD: 5,947.42', VS: 33' 6:00 12: INDR DRILL MTRVER P DRILL 9 78" INTERMEDIATE HOLE F 6,099' T 6,234'= 135' (AVE ROP: 23 FPH) GPM: 530, OFFON BTM PSI: 1,790 2,250, DIFF: 460, SRPM: 50 + MRPM: 154 = BRPM 204, WOB: 21 K, OFF BTM TORQ: 3.2K, ON BTM TORQ: 7.3K. PU 193K, SO: 183K, RTWT: 189 K SLIDE: 6,099' - 6,119' TOOLFACE: 25 MAG (1.5 hrs); 6,193' TO 6,218' (2 HRS) SLIDE FTG = 13 FPH = 33% FTG & 58% TIME CIRCULATING INNER BRINE RESERVE PIT CURRENT MW 9.2 PPG, PH: 10, VIS: 30 - SURVEY DEPTH: 6,136', INC: 1.76 DEG, AZM: TVD: 6,135.42', VS: 33' 12:00 17: INDR DRILL MTRVER P DRILL 9 78" INTERMEDIATE HOLE F 6,234' T 6,382'= 148' (AVE ROP: 27 FPH) GPM: 530, OFFON BTM PSI: 1,850 2,250, DIFF: 400, SRPM: 50 + MRPM: 154 = BRPM 204, WOB: K, OFF BTM TORQ: 3.2K, ON BTM TORQ: 7.3K. PU 198K, SO: 188K, RTWT: 194 K 17:30 18: INDR RIGMT SRVRIG P RIG SERVICE CIRCULATING INNER BRINE RESERVE PIT CURRENT MW 9.2 PPG, PH: 10, VIS: 30' 18:00 0: INDR DRILL MTRVER P DRILL 9 78" INTERMEDIATE HOLE F 6,382' T 6637'= 255'' (AVE ROP: 42 FPH) GPM: 530, OFFON BTM PSI: 1,810 2,350, DIFF: 4-540, SRPM: 50 + MRPM: 154 = BRPM 204, WOB: K, OFF BTM TORQ: 3.2K, ON BTM TORQ: 7.3K. PU 197K, SO: 188K, RTWT: 194 K INSTRUCTED TO INCREASE WOB F 21K TO 30-40K TO INCREASE ROP. Total Time CIRCULATING INNER BRINE RESERVE PIT CURRENT MW 9.2 PPG, PH: 10, VIS: 30' :51:48AM Page 2 of 3

15 OXY INC Report No: 13 OPERATIONS - NEXT DAY From To eration Details 0:00 1: INDR DRILL MTRVER P DRILL 9 78" INTERMEDIATE HOLE F 6,637' T 6,661'= 24'' (AVE ROP: 24 FPH) GPM: 530, OFFON BTM PSI: 1,810 2,350, DIFF: 4-540, SRPM: 50 + MRPM: 154 = BRPM 204, WOB: K, OFF BTM TORQ: 3.2K, ON BTM TORQ: 7-9.8K. PU 197K, SO: 188K, RTWT: 194 K DRILLING AHEAD IN THE MIDDLE LEONARD WITH GOOD DIFFERENTIAL AND VARYING WOB F 30-40K TO OPTIMIZE ROP. ROP SLOWLY BEGAN TO TAPER OFF TO 0 6,661'. ATTEMPTED TO PICK UP AND RESTART BIT BUT UNABLE TO GET BACK TO BOTTOM (1' OFF BOTTOM) BEFORE THE BIT WOULD START TAKING WEIGHT. MAX DIFFERENTIAL ABLE TO OBTAIN WAS PSI. CALLED ENGINEER & FS. DECISION MADE TO TRIP BHA. CIRCULATING INNER BRINE RESERVE PIT CURRENT MW 9.2 PPG, PH: 10, VIS: 30' 1:00 2: INDR CIRC CNDHOL P CIRCULATE 20 BBL HI VIS SWEEP AROUND. BUILD SLUG WHILE CIRCULATING. JSA WITH RIG CREW AND REVIEWED TRIPPING OPERATIONS, WORKING AT HEIGHTS AND LOOK UP TO LIVE. PERFORMED FLOW CHECK. NO FLOW. 2:00 4: INDR TRIP DRILL P TRIP OUT OF THE HOLE WITH BHA #4 F 6,661' - 1,300'. MONITOR RETURNS ON TRIP TANKS. FLOW HWDP (1,373'). NO FLOW. CONTINUE TOH F 1,374' T 130'. 4:00 6: INDR P HANDLE BHA #4 - HOLD PJSM WITH RIG CREW, PATHFINDER DIRECTIONAL HANDS, & Total Time 6.00 Safety Incident? N Environ Incident? Incident Comments: No incidents reported last 24 hours. Other Remarks: N Days since Last RI: Days since Last LTA DSM ON LAYING OUT TOOLS BREAK & LAY OUT BIT #4,, MUD MTR & MWD PROBE Weather Comments: VAQUERO UL #3221 From Fort Stockton, Texas (Interstate 10 & FM 1053) go east on Interstate 10 for 12.4 miles (Exit #272), then go south on University Road (2.2 Miles) the road will jog left for (5 tenths) of a mile then turn back south and go (3.4 miles) turn right and go West (2.6 miles) turn right and follow road north to location (400 feet)! LIFE FLIGHT COORDINATES: LAT LONG NAD 27 FLIGHT FOR LIFE OXY DSM TRAILER: NOTIFICATIONS: NOTIFIED ISABEL WITH TRRC OF SPUD, CASING RUN & CEMENT 10:00 HRS) JOB #3527 NOTIFIED BRENDA OPERATOR #13 WITH TRRC OF SURFACE CASING RUN & CEMENT 08:00 HRS) JOB #3527 UNSAFE ACTS: 10 SAFE ACTS: 0 UNSAFE EQUIPMENT: 0 SWA'S: 0 NEAR MISSES: 0 JSA'S: 16 SAFETY MEETINGS: 17 LOTO'S: 0 PERMITS TO WORK : 5 POWER LINE CHECKLIST: PRE SPUDRIG INSPECTION: HAZARD ID'S: 0 EP2 OBSERVATIONS: 0 BEST STOP CARD: REMOVED TRIP TANK LID TO OBSERVE FLOW FOR FLOW CHECK. COMPLETED FLOW CHECK AND DERRICKHAND WALKED OFF. STOPPED HIM AND HAD HIM COVER THE TRIP TANK TO MITIGATE THE HAZARD. CONTINUED TASK WITHOUT INCIDENT :51:48AM Page 3 of 3

16 OXY INC Report No: 14 Wellbore Top MD: Today's MD: Prev MD: PBMD: Current Formation Current s: 24-Hr Summary: 24-Hr Forecast: 0 ft Rig: 7136 ft Progress: 6637 ft Rot Today: Avg ROP Today: 3RD BONE SPRING@6,957.0 CASINGWELL CONTROL Last Casing: 842ft Next Casing: 7,500ft Last BOP Press Test: Form TestEMW: FIT ppg Supervisor 1: Supervisor 2: Engineer: H&P ft 1 hr 49.9 fthr DRILL 9 78" INTERMEDIATE INTERVAL TO TD. (7,521') DRILL T 6,661'. TOH TO CHANGE OUT BHA #4. MU 9 78" BHA #5. TIH & DRILL T 7,136'. RR(040115) ROL(040315) DRILL 9 78" VERTICAL INTERVAL. PERSONNEL EDDIE BOND SHAWN EICKERT JANICE CHIU Geologist: MICHELLE WRY Oxy Personnel: 3 Contractor Personnel 17 Total on Site: 20 Size Manufacturer HOOKLOAD & TORQUE kip kip Str Wt UpDn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model Ref Datum: Ground Elev: AFE MDDays: AFE Number: Original 2, ft 9, days #0102 DFS: Daily Cost: Cum Cost: AFE Cost: 9.97 $72,116 $1,188,293 $2,000,000 Lithology: 45% SHALE, 55% LIMESTONE 3,700.0 ft-lbf 7,800.0 ft-lbf HYDRAULICS Pump Rate: Pump Press: 2445 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 ULTERRA DRILLING T U716M M323 4x15, 3x Nozzles MD In MD Out I-O-D-L B-G-O-R SMITH MSI713HUPX JJ9852 M323 2x13, 8x CR-N X-1-WT-PR BIT OPERATING PARAMETERS TODAY Rot Cum Rot Prog Cum Prog ROP Cum ROP WOB minmax RPM minmax TFA P Drop z Vel HHPSI MUD DATA - NOV FluidControl Engineer: George Daily MBT: Sample From: PIT ph: Mud : Time MD: Cut Brine 19:41 6,660.0 Pm Pom: Pf Mf: Temp: Rheology Temp: Viscosity: PV YP: Gels 10s10m30m: API WL: HTHP WL: Cake API HTHP: Solids Sol Corr: Oil Water: Oil Water % for OWR: Sand: Water Added: Oil Added: LGS: 5.00 VG Meter:?@6 11@300 16@600 Comments: MUD PRODUCTS Chlorides: Ca++ K+: CaCl2: Cl- in water phase: Lime: ES: ECD: n K: Carbonate: Bicarbonate: Form Loss Cum Loss Fluid Disch: Daily Mud Cost: Cum Mud Cost: <div>6946 ft at time of report and drlg ahead ft this morning made trip for new bit. Changed out bit and mud motor. No problem 0.0 lbmbbl ,000 2,000 Product Number of Units Qty Used Units Barite 1.00 each 0.55 NOV Salt Gel 1.00 each 5 Soap Stick 1.00 each 1 StarDrill NP each 1.00 LAST OR CURRENT BHA BHA No: 5 : 1 MD In: 6661 ft Purpose: DRILL 9 78" VERTICAL INTERVAL MD Out: Component OD ID Jts Length HWDP DRILL COLLAR CROSSOVER NON-MAG SPIRAL DRILL COLLAR STRING STABILIZER NON-MAG SPIRAL DRILL COLLAR MULESHOE SUB FLOAT SUB STRING STABILIZER STEERABLE MOTOR PDC BIT $731 $20,357 Total Length: 1, ft Wt below Jars: 0.0 kip :27:32AM Page 1 of 3

17 OXY INC Report No: 14 OPERATIONS From To eration Details 0:00 1: INDR DRILL MTRVER P DRILL 9 78" INTERMEDIATE HOLE F 6,637' T 6,661'= 24' (AVE ROP: 24 FPH) GPM: 530, OFFON BTM PSI: 1,810 2,350, DIFF: 4-540, SRPM: 50 + MRPM: 154 = BRPM 204, WOB: K, OFF BTM TORQ: 3.2K, ON BTM TORQ: 7-9.8K. PU 197K, SO: 188K, RTWT: 194 K DRILLING AHEAD IN THE MIDDLE LEONARD WITH GOOD DIFFERENTIAL AND VARYING WOB F 30-40K TO OPTIMIZE ROP. ROP SLOWLY BEGAN TO TAPER OFF TO 0 6,661'. ATTEMPTED TO PICK UP AND RESTART BIT BUT UNABLE TO GET BACK TO BOTTOM (1' OFF BOTTOM) BEFORE THE BIT WOULD START TAKING WEIGHT. MAX DIFFERENTIAL ABLE TO OBTAIN WAS PSI. CALLED ENGINEER & FS. DECISION MADE TO TRIP BHA. CIRCULATING INNER BRINE RESERVE PIT CURRENT MW 9.2 PPG, PH: 10, VIS: 30' 1:00 2: INDR CIRC CNDHOL PT CIRCULATE 20 BBL HI VIS SWEEP AROUND. BUILD SLUG WHILE CIRCULATING. JSA WITH RIG CREW AND REVIEWED TRIPPING OPERATIONS, WORKING AT HEIGHTS AND LOOK UP TO LIVE. PERFORMED FLOW CHECK. NO FLOW. 2:00 4: INDR TRIP DRILL PT TRIP OUT OF THE HOLE WITH BHA #4 F 6,661' - 1,300'. MONITOR RETURNS ON TRIP TANKS. FLOW HWDP (1,373'). NO FLOW. CONTINUE TOH F 1,374' T 130'. 4:00 6: INDR TRIP BHA PT HANDLE BHA #4 - HOLD PJSM WITH RIG CREW, PATHFINDER DIRECTIONAL HANDS, & DSM ON LAYING OUT TOOLS BREAK & LAY OUT BIT #4, MUD MTR & MWD PROBE BIT # 4 GRADED AS FOLLOWS: 8-2-CR-N-X-116-WT-PR 6:00 6: INDR SAFE PJSM PT PJSM WITH RIG CREW, PATHFINDER HANDS & DSM ON HANDLING DIRECTIONAL TOOLS 6:30 7: INDR TRIP BHA PT FINISH HANDLE BHA-LAY DOWN MUD MTR # 4 - CHANGE OUT BATTERY ON MWD RIG CREW CLEAN RIG FLOOR & PREP TO TRIP IN PJSM WITH RIG CREW, DIRECTIONAL, & DSM ON PICK UP BHABIT # 5 7:30 10: INDR TRIP BHA PT MAKE UP 9 78" INTERMEDIATE BHA #5 AS FOLLOWS: ULTERA U716M W 3 x 14'S & 4 x 15'S FOR JETS TFA: SN: (BIT #5, RUN #1) 2. SLB 6.75" G MUD MOTOR (REVGAL: 0.28) ORIENT & SCRIBE MTR W MWD - WITNESSED BY DSM " STABILIZER (14" UNDER GAUGE) 4. FLOAT SUB 5. MULESHOE 6. NMDC W MWD " NM STABILIZER (14" UNDER GAUGE) " NMDC 13. CROSS OVER 14. (15) 6 12" DC 15. (24) 4.5" HWDP ***NOTE*** SURFACE TEST MWDMTR W NO BIT- GOOD TEST 10:00 13: INDR TRIP DRILL PT TRIP IN FROM DIRECTIONAL TOOLS TO 6006' MONITOR WELL ON TRIP TANK - HAD CORRECT MUD GAIN FOR PIPE DISPLACEMENT HOLE CONDITION: SLICK TOOK CHECK SHOTS WITH 842', 2014', 4024', & 6002' - ALL CHECK GOOD 13:00 13: INDR SRFEQ RIGUP PT REVIEW JSA'S - REMOVE TRIP NIPPLE & INSTALL ROTATING HEAD 13:30 14: INDR TRIP DRILL PT FINISH TRIP IN F 6006' TO 6571' HAD CORRECT MUD GAIN & HOLE SLICK 14:00 14: INDR REAM PRRM PT FILL PIPE & TAKE LAST CHECK SHOT W MWD WASHREAM FROM 6571' TO 6660' AS PRECATION DRILL CONE LEFT FROM CORED BIT W 1 TO 2 K ON BIT :27:32AM Page 2 of 3

18 OXY INC Report No: 14 From To eration Details 14:30 17: INDR DRILL MTRVER P DRILL 9 78" INTERMEDIATE HOLE F 6,661' T 6,790'= 129' (AVE ROP: 43 FPH) GPM: 530, OFFON BTM PSI: 1,860 2,350, DIFF: 490, SRPM: 50 + MRPM: 154 = BRPM 204, WOB: K, OFF BTM TORQ: 3.7K, ON BTM TORQ: 9.0K. PU 207K, SO: 195K, RTWT: 204 K CIRCULATING INNER BRINE RESERVE PIT CURRENT MW 9.2 PPG, PH: 10, VIS: 30 17:30 18: INDR RIGMT SRVRIG P RIG SERVICE. - SURVEY DEPTH: 6,701', INC: 1.49 DEG, AZM: TVD: 6700' 18:00 0: INDR DRILL MTRVER P DRILL 9 78" INTERMEDIATE HOLE F 6,790' T 7,136'= 346' (AVE ROP: 58 FPH) GPM: 530, OFFON BTM PSI: 1,910 2,445, DIFF: 535, SRPM: 50 + MRPM: 154 = BRPM 204, WOB: 26 K, OFF BTM TORQ: 3.7K, ON BTM TORQ: 9.9K. PU 209K, SO: 200K, RTWT: 203 K PERFORM DRILL OFF TEST IN NEW FORMATION "LOWER LEONARD". FOUND WOB: 26K, SRPM: 45 TO PRODUCE LOWEST CONSISTENT MSE RESULTS. CIRCULATING INNER BRINE RESERVE PIT CURRENT MW 9.2 PPG, PH: 10, VIS: 30 Total Time SURVEY DEPTH: 6,984', INC: 2.81 DEG, AZM: TVD: 6,983' OPERATIONS - NEXT DAY From To eration Details 0:00 6: INDR DRILL P DRILL 9 78" INTERMEDIATE HOLE F 7,136' T 7,521' TD= 385' (AVE ROP: 64 FPH) GPM: 530, OFFON BTM PSI: 1,910 2,445, DIFF: 535, SRPM: 50 + MRPM: 154 = BRPM 204, WOB: 26 K, OFF BTM TORQ: 3.7K, ON BTM TORQ: 9.9K. PU 209K, SO: 200K, RTWT: 203 K Total Time 6.00 Safety Incident? N Environ Incident? Incident Comments: No incidents reported last 24 hours. Other Remarks: N Days since Last RI: Days since Last LTA CIRCULATING INNER BRINE RESERVE PIT CURRENT MW 9.2 PPG, PH: 10.5, VIS: Weather Comments: VAQUERO UL #3221 From Fort Stockton, Texas (Interstate 10 & FM 1053) go east on Interstate 10 for 12.4 miles (Exit #272), then go south on University Road (2.2 Miles) the road will jog left for (5 tenths) of a mile then turn back south and go (3.4 miles) turn right and go West (2.6 miles) turn right and follow road north to location (400 feet)! LIFE FLIGHT COORDINATES: LAT LONG NAD 27 FLIGHT FOR LIFE OXY DSM TRAILER: NOTIFICATIONS: NOTIFIED ISABEL WITH TRRC OF SPUD, CASING RUN & CEMENT 10:00 HRS) JOB #3527 NOTIFIED BRENDA OPERATOR #13 WITH TRRC OF SURFACE CASING RUN & CEMENT 08:00 HRS) JOB #3527 UNSAFE ACTS: 10 SAFE ACTS: 0 UNSAFE EQUIPMENT: 0 SWA'S: 0 NEAR MISSES: 0 JSA'S: 20 SAFETY MEETINGS: 22 LOTO'S: 1 PERMITS TO WORK : 9 POWER LINE CHECKLIST: PRE SPUDRIG INSPECTION: HAZARD ID'S: 0 EP2 OBSERVATIONS: 0 BEST STOP CARD: CREW MEMBER WAS IN HAMMER SWING PLANE WHILE MAKING UP A HOSE. STOPPED JOB AND MADE CREW MEMBER AWARE AND TO MOVE. JOB FINISHED WITHOUT INCIDENT :27:32AM Page 3 of 3

19 OXY INC Report No: 15 Wellbore Top MD: Today's MD: Prev MD: PBMD: Current Formation Current s: 24-Hr Summary: 24-Hr Forecast: 0 ft Rig: 7521 ft Progress: 7136 ft Rot Today: Avg ROP Today: 3RD BONE SPRING@6,957.0 CASINGWELL CONTROL Last Casing: 842ft Next Casing: 7,500ft Last BOP Press Test: Form TestEMW: FIT ppg Supervisor 1: Supervisor 2: Engineer: H&P ft 6.00 hr 64.2 fthr Ref Datum: Ground Elev: AFE MDDays: AFE Number: Original 2, ft 9, days #0102 DFS: Daily Cost: Cum Cost: AFE Cost: $97,666 $1,277,110 $2,000,000 Lithology: 30% SHALE & 70% 7,521'. RIH W 7 58" CASING T 2,400'. DRILL 9 78" INTERMEDIATE TO TD (7,521'). TOH LAYING DOWN DP, DC'S, BHA. PULL WEAR BUSHING. RR(040115) ROL(040315) RU CASING CREW. RIH W 7" & 7 58" CASING. CEMENT SAME. PSI TEST CSG. MU BHA #6. PERSONNEL EDDIE BOND SHAWN EICKERT JANICE CHIU Geologist: MICHELLE WRY Oxy Personnel: 2 Contractor Personnel 17 Total on Site: 19 Size Manufacturer HOOKLOAD & TORQUE kip kip Str Wt UpDn: Str Wt Rot: Torq Off Btm: Torq On Btm: Model 3,500.0 ft-lbf 9,900.0 ft-lbf HYDRAULICS Pump Rate: Pump Press: 2450 SURVEY DATA (LAST 6) MUD GAS Avg Max Conn: Trip: Backgr: MD Incl Azi TVD N-S E-W VS DLS Build 7, , , , , , , , , , , , Serial No BIT RECORD IADC ULTERRA DRILLING T U716M M323 4x15, 3x CT-S X-I-NO-TD Nozzles MD In MD Out I-O-D-L B-G-O-R SMITH MSI713HUPX JJ9852 M323 2x13, 8x CR-N X-1-WT-PR BIT OPERATING PARAMETERS TODAY Rot Cum Rot Prog Cum Prog ROP Cum ROP WOB minmax RPM minmax TFA P Drop z Vel HHPSI MUD DATA - NOV Engineer: George Daily MBT: Sample From: PIT ph: Mud : Time MD: Cut Brine 18:54 7,521.0 Pm Pom: Pf Mf: Temp: Rheology Temp: Viscosity: PV YP: Gels 10s10m30m: API WL: HTHP WL: Cake API HTHP: Solids Sol Corr: Oil Water: Oil Water % for OWR: Sand: Water Added: Oil Added: LGS: Chlorides: Ca++ K+: CaCl2: Cl- in water phase: Lime: ES: ECD: n K: Carbonate: Bicarbonate: Form Loss Cum Loss Fluid Disch: Daily Mud Cost: Cum Mud Cost: VG Meter:?@6 9@300 13@600 Comments: <div>td the intermediate 7521 ft. At TD we ran 2 high vis sweeps and circ bottoms up to ensure clean hole. TOOH laying MUD PRODUCTS 0.0 lbmbbl ,000 2, $587 $20,943 Product Number of Units Qty Used Units Lime 1.00 each 2.00 NOV Salt Gel 1.00 each 5 Soda Ash 1.00 each 3.00 StarDrill NP each 1.00 LAST OR CURRENT BHA BHA No: 5 : 5 MD In: 6661 ft Purpose: DRILL 9 78" VERTICAL INTERVAL MD Out: 7521 ft Component OD ID Jts Length HWDP DRILL COLLAR CROSSOVER NON-MAG SPIRAL DRILL COLLAR STRING STABILIZER NON-MAG SPIRAL DRILL COLLAR MULESHOE SUB FLOAT SUB STRING STABILIZER STEERABLE MOTOR PDC BIT Total Length: 1, ft Wt below Jars: 0.0 kip :57:06AM Page 1 of 4

20 OXY INC Report No: 15 OPERATIONS From To eration Details 0:00 6: INDR DRILL MTRVER P DRILL 9 78" INTERMEDIATE HOLE F 7,136' T 7,521' TD= 385' (AVE ROP: 64 FPH) GPM: 530, OFFON BTM PSI: 1,910 2,445, DIFF: 535, SRPM: 50 + MRPM: 154 = BRPM 204, WOB: 26 K, OFF BTM TORQ: 3.7K, ON BTM TORQ: 9.9K. PU 209K, SO: 200K, RTWT: 203 K CIRCULATING INNER BRINE RESERVE PIT CURRENT MW 9.2 PPG, PH: 10.5, VIS: 30 CLOSE IN SYSTEM TO MUD 05:30 HRS 6:00 7: INDR CIRC CNDHOL P CIRCCOND WELL FOR RUNNING INTERMEDIATE CSG - CIRC HI VIS SWEEP W NUT 7:00 7: INDR WLCNTL CHKFLOW P CHECK FOR FLOW - WELL STATIC PLUG FOR HOLE CALIPER SURFACE TO SURFACE CALCULATED = 7231 STKS SHAKERS = 9550 STKS WASH OUT 32 % 7:30 8: INDR CIRC CNDHOL P CIRCCOND WELL FOR RUNNING INTERMEDIATE CSG - 2ND BTMS UP PUMP SLUG 8:00 8: INDR TRIP DRILL P TRIP OUT FROM 7521' TO 6571' RACKING BACK PIPE IN DERRICK WELL TAKING PROPER FILL FOR PIPE DISPLACEMENT HOLE CONDITION: SLICK 8:30 14: INDR TRIP PULD P CONTINUE TRIPPING OUT FROM 6571' TO 2355' LAYING DOWN 4 12" DRILL PIPE WELL TAKING PROPER FILL HOLE CONDITION: SLICK NOTE: CSG CREW ARRIVED ON LOCATION *NOTIFIED TRRC OF CASING & CEMENTING OF INTERMEDIATE CASING. SPOKE WITH 08:30 HRS. 14:00 14: INDR SRFEQ RIGUP P REVIEW JSA'S - REMOVE ROTATING HEAD & INSTALL TRIP NIPPLE 14:30 15: INDR TRIP PULD P CONTINUE TRIPPING OUT FROM 2355' TO 1292 LAYING DOWN 4 12" DRILL PIPE WELL TAKING PROPER FILL & HOLE SLICK 15:30 16: INDR TRIP DRILL P TRIP IN HOLE FROM 1292' TO 2235' WITH STANDS FROM DERRICK HAD PROPER MUD GAIN FOR PIPE DISPLACEMENT AND CAPACITY 16:00 21: INDR TRIP PULD P CONTINUE TRIPPING OUT FROM 2235' TO 108' LAYING DOWN 4 12" DRILL PIPE, 4 12" HWDP, & 6 12" DCS. NOTE: PIPE TIGHT. HAD TO WARM BOXES UP WITH HAMMER. WELL TAKING PROPER FILL HOLE CONDITION: SLICK 21:00 23: INDR TRIP DRILL P HANDLE BHA #5 - HOLD PJSM WITH RIG CREW, PATHFINDER DIRECTIONAL HANDS, & DSM ON LAYING OUT TOOLS BREAK & LAY OUT BIT #5, MUD MTR & MWD PROBE. NO SQUAT IN MOTOR. BIT # 5 GRADED AS FOLLOWS: 1-1-CT-S-X-I-NO-TD 23:00 23: INDR TRIP BHA P CLEAN RIG FLOOR. LAY DOWN ALL 4.5" HANDLING TOOLS OFF FLOOR. 23:30 0: INDR SRFEQ RIGUP P PULL WEAR BUSHING. Total Time :57:06AM Page 2 of 4