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PERFORMANCE PROPERTIES Requirements for Leak Resistance of API Connections (LTC/ BTC)

PERFORMANCE PROPERTIES Requirements for Leak Resistance of API Connections (LTC/ BTC). API Connection Reliability January 2010. Agenda: January 2010. Submit for WWW Ballot: WI 3064: Alternate Gauging – rejecting good material WI 2329: Coupling wall Ballot WI 2291: BTC Leak Resistance

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PERFORMANCE PROPERTIES Requirements for Leak Resistance of API Connections (LTC/ BTC)

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  1. PERFORMANCE PROPERTIESRequirements for Leak Resistance of API Connections (LTC/ BTC) API Connection Reliability January 2010

  2. Agenda: January 2010 Submit for WWW Ballot: WI 3064: Alternate Gauging – rejecting good material WI 2329: Coupling wall Ballot WI 2291: BTC Leak Resistance BTC 5CT Coupling Length BTC 5B Dimensions and Tolerances Accepted BTC 5C1 Reviewed / Approved BTC SR23 Prototype Manufacture WWW: Review/ Submit Draft Specification (MAG-Pete Moore) 2

  3. WI 3064 ISSUE: Accuracy/ Repeatability Addressing multiple Error Sources 3064 Alternative Gauging of API Connections (TG-OCTG/RG-TGTC) Describes philosophy embodied in migration from hardened gauges to thread diameter gauge system. Upon successful ballot and comment resolution, the RG-TGTC will be directed to develop detailed changes to API 5B for future letter ballot. Issues • Gaging (accuracy/repeatability)-Pitch Diameter Measurement • Thread Form (function)- Eliminate root-crest contact • Dimensional tolerances- Revised for methodology

  4. Submit for BallotWI 3064: Alternate Gauging USS 1955 Research 4

  5. API Connection PerformanceThe Problem for Leak & Mfg : 5B Gaging g L 1 L 4 Scope of Work 1. Finite Element Analysis: 2. Qualification Testing 3. Gaging: 5B Does not measure Pitch Diameter (SIZE) Ring & Plug Functional gage: Thread Diameter Gaging E 1 measured E 1 actual Ring Gauge on an Oval Pin Ring Gauge on a Fast Pin Significant error due to Ovality and taper (poor repeatability) System 21 (Plug and Ring) acceptance methods do not assure dimensional conformance with the material limits specified in ASME B1.1, MIL-S-8879, MIL-S-7742, MIL-S-1222 and FED STD H28. NIST Position, March 1994. 5

  6. WI2239 ISSUE: Reliability Addressing multiple Failure Mechanisms: ALL • Gaging (accuracy/repeatability)-Pitch Diameter Measurement • Thread Form (function)- Eliminate root-crest contact • Dimensional tolerances- Revised for high pressure • Thread Compound-Qualify/ Revised Application • Coupling Yield-Heavy wall Eliminated/min wall specified • Tension (makeup/ Tension SF)-Unload Stab Flank Contact • Makeup- Quantified for each Diameter/Grade • Coupling Coatings-Address galling/ leak resistance Validated by test, designed through Analysis- Most Extensive FEA Reported in Industry Consistent with research of 1930’s, 1940’s, 1950’s, Weiner in 1960’s, API 1980’s, API 1990’s! and other technical papers.

  7. API LTC - Yielding at Working Loads 1. Make-up Coupling Elastic Pin Above Elastic Limit 2. Make-up with Tension ( approaches plastic hinge) Above API Yield Elastic Above Elastic Limit 3. Make-up with Tension & Internal Pressure Above API Yield Elastic Above Elastic Limit 1984 B.E. Schwind API PRAC Project 84-53

  8. Coupling Thickness

  9. Coupling Thickness

  10. Coupling Thickness

  11. Coupling Thickness

  12. PRIZE: OCTG Spend $150MM / yr $800MM Losses 78-84 Connection Technology Timeline API Leak Research PRAC 53: 83-86 WI2239 8-Round Leak Research 15,000 psi Standardization is initiated so that pipe from different mills can be used in a single well or field (WW I delivery problems) 8-Round Leak Research 1000 psi (1941) API 8-Round Tension Research API BTC Tension Research API USS research on Leak resistance DEA 5 1933 Hydril Premium Connections Fred Stone Atlas Bradford Premium Connections Hardy Griffin Taylor VAM Premium Connections Interlock Premium Connections Proprietary First Product Line Qualification (Mobil LRFD) AB TC-II VAM TOP Hunting APEX DEA 27 Exxon Mobil Shell RQT World War I World War II 1920 1930 1940 1950 1960 1970 1980 1990 2000 API No 5- 1924 steel & iron pipe Specification 8 & 10 V Threads Chemistry & Tensile Properties API Round Thread Drill Pipe Tubing Casing API BTC API Extreme Line Exxon Torque- Turn API 5C5 Exxon TPC IS0 13679 SR22 OUT THE DOOR DELIVERABLES Hydril 2-Step Flush Joint ‘33 Hydril CS ‘46 PH6 ‘48 Hydril TripleSeal (Type B’40) AB TC-4S Quadraseal VAM ACE Hydril Wedge Thread VAM TOP TCII APEX

  13. API Leak Research: USS 1955-1956 13

  14. API Connection PerformanceThe Problem for Leak & Mfg : 5B Gaging g L 1 L 4 Scope of Work 1. Finite Element Analysis: 2. Qualification Testing 3. Gaging: 5B Does not measure Pitch Diameter (SIZE) API A major pin diameter contact: Alternate Gaging E 1 measured E 1 actual Ring Gauge on an Oval Pin Ring Gauge on a Fast Pin Significant error due to Ovality and taper (poor repeatability) No Interference: 7” Fast pin-coupling, small pin/large box-LEAK! 10-¾ @ 0.3% ovality diameter variance is roughly 0.032 inch, Overshadows the 0.006 inch (approx) BTC tolerance 14

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  16. WI2239 ISSUE: Leak Resistance Address Multiple Root Causes of Failure- Analysis • Gaging-Pitch Diameter Measurement • Thread Form- Eliminate root-crest contact • Dimensional tolerances- Revised for high pressure • Thread Compound- Revised Application • Coupling Yield- Heavy wall Eliminated • Tension- Unload Stab Flank Contact • Makeup- Quantified for each Diameter/Grade • Coupling Coatings- Address galling/ leak resistance Validated by test, designed through Analysis- Most Extensive FEA Reported in Industry Consistent with Weiner leak criteria of 1960’s, API work in the 1980’s, and other published technical papers.

  17. WI 2291 BTC Leak Resistance: Makeup Options are allowed for SRXX connection makeup (refer to 4.4.1 a.1) Rejects occur when the coupling does not make the position criteria with minimum power-turns. Control of the coupling make-up shall be by one of the following methods. • By Power Turn via Torque-turn equipment, or by counting power turns. Power-turns start at a torque value equal to 5% to 10% of the target given in Table B1. The number of power turns shall equal or exceed the minimum number of power turns specified in Table B1. The acceptance position when counting turns shall be two turns below the base of the triangle to the apex of the triangle. If torque is observed to oscillate (often a result of eccentricities) adjustment of the definition of start of power torque upward may be required. Ensure proper alignment in makeup equipment and identify source of torque oscillation. • Makeup to within the triangle position and verify power turn requirement. Repeat power-turn verification at regular intervals. iii) Torque guided make-up, per 4.4, with the revision of determining torque via the number of power-tight turns per Table B1. Makeup torque should relate to an upper value of actual field make-up torque values. Repeat power-turn verification at regular intervals. Makeup shall be within the triangle position mark.

  18. WI 2291 BTC MAKEUP: P110 J’

  19. WI 2291 BTC MAKEUP: P110 19

  20. 5C1-SR23

  21. WI 2291: BTC Leak Resistance 8.625-9.625 inch: A11 = 4.9125 13.375 inch: A11 = 5.2125 16-20 inch: A11 = 5.3125 A11 A11 16-20 inch: J = 0.00 10-3/4-13.375: J = 0.20 - 0.50

  22. WI 2291: BTC Leak ResistanceStandard Thread Form

  23. API BTC ISSUE: USS Trials

  24. API BTC ISSUE: USS Trials

  25. WI 2291: BTC Leak ResistanceStandard Thread Form 25

  26. WI 2291: BTC Leak ResistanceStandard Thread Form

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