Standard DS-1 Fourth Edition, Volume 4 - ADDENDUM 1 Applies to First Printing only

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Lee Dickerson
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1 Page MPI Body Inspection Coverage. When the outside surface of the tool from shoulder to shoulder. Pay special attention to areas around load adjustment ports and external oil plug holes that may act as stress risers. Any crack is cause for rejection MPI Body Inspection Coverage. When the entire outside surface of the tool from shoulder to shoulder, and all load bearing components. Pay special attention to areas around load adjustment ports and external oil plug holes that may act as stress risers. Any crack is cause for rejection. Page Liquid Penetrant Inspection Coverage. When performing the Liquid Penetrant Inspection (section 7.18) common inspection method (or Blacklight Connection Inspection and MPI Body Inspection for ferromagnetic material), the inspection shall cover the end connection, the midbody connection and the outside surface of the tool structural case. Pay special attention to ports and machined areas. Any crack is cause for rejection Liquid Penetrant Inspection Coverage. When performing the Liquid Penetrant Inspection (section 7.18) common inspection method (or Blacklight Connection Inspection and MPI Body Inspection for ferromagnetic material), the inspection shall cover the end connection, the midbody connection, and the entire outside surface of the tool from shoulder to shoulder. Pay special attention to ports and machined areas. Any crack is cause for rejection. Page Liquid Penetrant Inspection and MPI Body Inspection Coverage. When performing the Liquid Penetrant Inspection (section 7.18) or MPI Body Inspection (section 7.19) common inspection method, the inspection shall cover the outside surface of the tool from shoulder to shoulder. Additionally, welds and 24 inch (minimum) from both ends of the rotor shall be inspected. Any crack, regardless of orientation shall be rejected Liquid Penetrant Inspection and MPI Body Inspection Coverage. When performing the Liquid Penetrant Inspection (section 7.18) or MPI Body Inspection (section 7.19) common inspection method, the inspection shall cover the entire outside surface of the tool from shoulder to shoulder. Additionally, welds and 24 inches (minimum) from both ends of the rotor shall be inspected. Any crack, regardless of orientation shall be rejected. Page MPI Body Inspection Coverage. When the pins, arms, entire outside surface of the tool structural case, and other load bearing members. Recheck all components except the tool structural case with the magnetic field oriented perpendicular to the first (longitudinal) scan MPI Body Inspection Coverage. When the pins, arms, entire outside surface of the tool from shoulder to shoulder, and other load bearing members. Recheck all components except the outside surface of the tool with the magnetic field oriented perpendicular to the first (longitudinal) scan. A1-1

Page 85 Figure 7.11 CHANGE TO: (Replace figure) Page 89 Figure 7.19 INTERNAL SHOULDER DIMENSION: IF R BORE, DISREGARD IF BORE < R (BORE+0.5 in.), MINIMUM SHOULDER = 1/8 in.

5 inches long) in non-structural base metal on a cutter knife. 1/8 in. max rad. Corner broken 45 max R A 30 deg. Figure 7.19 Bit sub float bore. Page 117 7.18.7.d d.

2 Page 85 Figure 7.11 CHANGE TO: (Replace figure) Page 89 Figure 7.19 INTERNAL SHOULDER DIMENSION: IF R BORE, DISREGARD IF BORE < R (BORE+0.5 in.), MINIMUM SHOULDER = 1/8 in. OTHERWISE, MINIMUM SHOULDER = 1/4 in. (NOTE: ID'S OF THE BORE AND BIT PIN MUST BE SMALL ENOUGH TO HOLD THE VALVE ASSEMBLY) INTERNAL SHOULDER BORE Figure 7.11 Acceptable cracks (less than 0.5 inches long) in non-structural base metal on a cutter knife. 1/8 in. max rad. Corner broken 45 max R A 30 deg. Figure 7.19 Bit sub float bore. Page d d. For fluorescent penetrant: The intensity of ambient visible light, measured at the inspection surface, during wet fluorescent magnetic particle inspection, shall not exceed 2 foot-candles. d. For fluorescent penetrant: The intensity of ambient visible light, measured at the inspection surface, during fluorescent liquid penetrant inspection, shall not exceed 2 foot-candles. Page 126 Table 7.4 Used Tool Joint Acceptance Criteria Max Nominal Bevel Size/Wt Conn Grade Diameter 4 NC40 S 5 1/ Max Nominal Bevel Size/Wt Conn Grade Diameter 4 NC40 S 5 1/ A1-2

3 Page 169 Table 7.17 Used Tool Joint Acceptance Criteria - NK DSTJ (Note 1) 1 When conflicts arise between this standard and manufacturer s requirements, the manufacturer s requirements shall apply. 1 When conflicts arise between this standard and manufacturer s requirements, the manufacturer s requirements shall apply. Minimum OD s smaller than those listed in this table are acceptable if torque limitations are followed. Please contact the manufacturer for applicable charts for torque limitations. Pages Table 7.21 Used Tool Joint Acceptance Criteria for Reduced Torsional Strength Ratio (Premium Class-Reduced TSR) CHANGE TO: (Replace table) Premium Class - Reduced TSR - E, X, G & S Grade Drill Pipe Assemblies Min Max Max Torsional Strength Max Min Min Bevel Min Tong Space CBore Bevel Prem Class Tool Size Weight Pin ID Box OD Shoulder Diam Pin Box Diam Diam Tube Joint TSR (in) (lb/ft) Conn Grade (in) (in) (in) (in) (in) (in) (in) (in) (ft-lbs) (ft-lbs) 2 7/ PAC E 1 9/ / / / / NC26 E 1 63/64 3 1/4 1/8 3 3/ / / / NC-38 G 2 11/16 4 5/8 15/ / /8 4 9/ / NC-38 S 2 11/16 4 5/8 15/ / /8 4 9/ / NC-38 X 2 11/16 4 5/8 15/ / /8 4 9/ / NC-38 G 2 11/16 4 5/8 15/ / /8 4 9/ / NC-38 S 2 11/16 4 5/8 15/ / /8 4 9/ / SH X 2 7/16 4 5/8 21/ / /8 3 15/ / SH G 2 7/16 4 5/8 21/ / /8 3 15/ / SH S 2 7/16 4 5/8 21/ / /8 3 15/ / NC-40 S 2 59/ / / /8 4 13/32 5 1/ NC-50 S 3 1/4 6 3/8 31/ /32 6 1/8 5 3/8 6 5/ Premium Class - Reduced TSR - DS-140 & DS-150 Grade Drill Pipe Assemblies Min Max Max Torsional Strength Max Min Min Bevel Min Tong Space CBore Bevel Prem Class Tool Size Weight Pin ID Box OD Shoulder Diam Pin Box Diam Diam Tube Joint TSR (in) (lb/ft) Conn Grade (in) (in) (in) (in) (in) (in) (in) (in) (ft-lbs) (ft-lbs) 2 7/ NC31 DS /32 4 1/16 17/ / /8 3 33/ / NC31 DS /32 4 1/16 17/ / /8 3 33/ / / NC38 DS / /16 21/64 4 9/ /8 4 9/ / NC38 DS / /16 21/64 4 9/ /8 4 9/ / NC40 DS /32 5 9/ / /8 4 13/32 5 1/ NC40 DS /32 5 9/ / /8 4 13/32 5 1/ / NC38 DS /16 4 5/8 15/ / /8 4 9/ / NC38 DS /16 4 5/8 15/ / /8 4 9/ / NC40 DS /16 5 3/32 21/ / /8 4 13/32 5 1/ NC40 DS /16 5 3/32 21/ / /8 4 13/32 5 1/ Continued on page A1-4 A1-3

4 Pages (continued from previous page) Table 7.21 Used Tool Joint Acceptance Criteria for Reduced Torsional Strength Ratio (Premium Class-Reduced TSR) CHANGE TO: (Replace table): Premium Class - Reduced TSR - DS-140 & DS-150 Grade Drill Pipe Assemblies (continued) Min Max Max Torsional Strength Max Min Min Bevel Min Tong Space CBore Bevel Prem Class Tool Size Weight Pin ID Box OD Shoulder Diam Pin Box Diam Diam Tube Joint TSR (in) (lb/ft) Conn Grade (in) (in) (in) (in) (in) (in) (in) (in) (ft-lbs) (ft-lbs) NC40 DS / /64 3/8 4 57/ /8 4 13/32 5 1/ NC40 DS / /64 3/8 4 57/ /8 4 13/32 5 1/ NC46 DS /2 5 9/16 9/ / /64 6 1/8 4 31/ / NC46 DS /2 5 9/16 9/ / /64 6 1/8 4 31/ / / NC46 DS / /32 25/ / /32 6 1/8 4 31/ / NC46 DS / /32 25/ / /32 6 1/8 4 31/ / NC50 DS /16 6 1/16 21/ / /64 6 1/8 5 3/8 6 5/ NC50 DS /16 6 1/16 21/ / /64 6 1/8 5 3/8 6 5/ / NC46 DS /8 5 59/64 15/ /64 4 7/16 6 1/8 4 31/ / NC46 DS /8 5 59/64 15/ /64 4 7/16 6 1/8 4 31/ / NC50 DS /32 6 7/32 13/ / /32 6 1/8 5 3/8 6 5/ NC50 DS /32 6 7/32 13/ / /32 6 1/8 5 3/8 6 5/ NC50 DS /32 6 5/16 29/ / /32 6 1/8 5 3/8 6 5/ NC50 DS /32 6 5/16 29/ / /32 6 1/8 5 3/8 6 5/ /2 FH DS /4 6 3/4 3/8 6 29/64 5 3/64 6 5/8 5 31/ / /2 FH DS /4 6 3/4 3/8 6 29/64 5 3/64 6 5/8 5 31/ / NC50 DS /4 6 3/8 31/ /32 6 1/8 5 3/8 6 5/ NC50 DS /4 6 3/8 31/ /32 6 1/8 5 3/8 6 5/ /2 FH DS / /16 15/ / /64 6 5/8 5 31/ / /2 FH DS / /16 15/ / /64 6 5/8 5 31/ / / /2 FH DS / /16 15/32 6 9/16 5 3/16 6 5/8 5 31/32 7 7/ /2 FH DS / /16 15/32 6 9/16 5 3/16 6 5/8 5 31/32 7 7/ / /2 FH DS /32 7 1/32 33/64 6 5/8 5 17/64 6 5/8 5 31/32 7 7/ /2 FH DS /32 7 1/32 33/64 6 5/8 5 17/64 6 5/8 5 31/32 7 7/ / /8 FH DS / /32 31/ / /16 6 5/8 6 29/ / /8 FH DS / /32 31/ / /16 6 5/8 6 29/ / / /8 FH DS / / / /8 6 29/ / /8 FH DS / / / /8 6 29/ / *TSR = (Tool Joint Torsional Strength)/(Tube Torsional Strength) = 0.8 for API Standard and Premium Class conditions. A1-4

5 Pages Table 7.28 Used BHA Connection Dimensional Acceptance Criteria CHANGE TO: (correct Boreback Cylinder Length Dimensions for the following connections) Connection Other Dimensions 6 Connection Other Dimensions 6 NC35 Boreback Cylinder Length 6 3/4-7 13/16 NC77 Boreback Cylinder Length 9 1/2-10 9/16 NC38 Boreback Cylinder Length 7-8 1/16 4-1/2 FH Boreback Cylinder Length 7-8 1/16 NC40 Boreback Cylinder Length 7 1/2-8 9/16 3-1/2 H90 Boreback Cylinder Length 7-8 1/16 NC44 Boreback Cylinder Length 7 1/2-8 9/16 4 H90 Boreback Cylinder Length 7 3/8-8 5/16 NC46 Boreback Cylinder Length 7 1/2-8 9/16 4-1/2 H90 Boreback Cylinder Length 7 1/2-8 9/16 NC50 Boreback Cylinder Length 7 1/2-8 9/16 5 H90 Boreback Cylinder Length 7 1/2-8 13/16 NC56 Boreback Cylinder Length 8-9 1/16 5-1/2 H90 Boreback Cylinder Length 7 1/2-8 13/16 NC61 Boreback Cylinder Length 8 1/2-9 9/16 6-5/8 H90 Boreback Cylinder Length 8-9 1/16 NC70 Boreback Cylinder Length /16 7 H90 FF 3 Boreback Cylinder Length 8 1/2-9 9/16 4 1/2 REG Boreback Cylinder Length 7 3/8-8 5/16 7 H90 LT 4 Boreback Cylinder Length 8 1/2-9 9/16 5 1/2 REG Boreback Cylinder Length 7 1/2-8 13/16 7-5/8 H90 FF 3 Boreback Cylinder Length /16 6 5/8 REG Boreback Cylinder Length 8-9 1/16 7-5/8 H90 LT 4 Boreback Cylinder Length /16 7 5/8 REG FF 3 Boreback Cylinder Length 8 3/8-9 5/16 8-5/8 H90 FF 3 Boreback Cylinder Length 9 1/ /16 7 5/8 REG LT 4 Boreback Cylinder Length 8 3/8-9 5/16 8-5/8 H90 LT 4 Boreback Cylinder Length 9 1/ /16 8 5/8 REG FF 3 Boreback Cylinder Length 8 1/2-9 7/16 5-1/2 IF Boreback Cylinder Length 8-9 1/16 8 5/8 REG LT 4 Boreback Cylinder Length 8 1/2-9 7/16 6-5/8 IF Boreback Cylinder Length 8-9 1/16 5 1/2 FH Boreback Cylinder Length 8-9 1/16 4 OH SW Boreback Cylinder Length 7-8 1/16 6 5/8 FH Boreback Cylinder Length 8-9 1/16 4-1/2 OH Boreback Cylinder Length 6 3/4-7 13/16 A1-5

6 Size Conn Type Nom Box OD Standard DS-1 Fourth Edition, Volume 4 - ADDENDUM 1 Page 205 Table 7.29 Used Heavy Weight Drill Pipe Dimensional Data Nom Pin ID Min Box OD Third Edition Criteria 4 Fourth Edition Criteria 5 Max Max Min Min Max Max Min Max Pin Bevel Seal Box Pin Bevel Seal ID 2 Diameter 1 Width 1 OD ID 2 Diameter 1 Width 1 Cbore Diameter 4 1/2 NC46 6 1/4 2 11/16 N/A N/A N/A N/A 5 51/64 3 1/8 5 47/64 11/ /32 6 1/4 2 3/4-2 13/ /64 3 1/ /32 3/8 5 51/64 3 1/8 5 47/64 21/ /32 Page 237 Table 7.41 Recommended Make-up Torque for Drill Collar Connections Connection Bore of Drill Collar (in) Type OD(in) 1 1-1/4 1-1/2 1-3/ /4 2-1/2 2-13/16 2-7/8 PAC / / Page e e. Multiply by 1.5 the smallest tensile load at which first point-yield occurs in any iteration on the component. The resulting value is the advanced tensile load capacity for the component (reference 3). If the advanced tensile load capacity exceeds the basic tensile load capacity, then the advanced tensile load capacity equals the basic tensile load capacity. Page e e. Multiply by 1.5 the smallest torsional load at which first point-yield occurred in any iteration on the component. The resulting value is the advanced torsional load capacity for the component (reference 3). If the advanced torsional load capacity exceeds the basic torsional load capacity, then the advanced torsional load capacity equals the basic torsional load capacity. Page References. ADD: 8. ISO Standard , Petroleum and natural gas industries Design and operation of subsea production systems Part 7: completion/workover riser systems, First Edition, (section D.2.4, page 201). e. Multiply by 1.5 the smallest tensile load at which first point-yield occurs in any iteration on the component. The resulting value is the advanced tensile load capacity for the component (reference 3). Alternately, the advanced tensile load capacity for the component can also be determined using the methodology provided in section D.2.4 of ISO Specification (reference 8). If the advanced tensile load capacity exceeds the basic tensile load capacity, then the advanced tensile load capacity equals the basic tensile load capacity. e. Multiply by 1.5 the smallest torsional load at which first point-yield occurred in any iteration on the component. The resulting value is the advanced torsional load capacity for the component (reference 3). Alternately, the advanced torsional load capacity for the component can also be determined using the methodology provided in section D.2.4 of ISO Specification (reference 8). If the advanced torsional load capacity exceeds the basic torsional load capacity, then the advanced torsional load capacity equals the basic torsional load capacity. A1-6

Drill Collars. Drill collars from VAM Drilling are available with the following features:

Drill Collars. Drill collars from VAM Drilling are available with the following features: 73 Drill Collars Drill collars are thick-walled tubular pieces machined from solid steel bars, forming a component of the bottom hole assembly that provides weight-onbit for improved drilling performance.