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Annual report TC67/SC4/WG3 Wellhead and Xmass tree ISO10423vs API 6A

Annual report TC67/SC4/WG3 Wellhead and Xmass tree ISO10423vs API 6A. WG Scope:standardisation of wellhead and xmass trees plus valves WG convenor :Ries Langereis WG secretary :Alfred Kruyer. WG 3 :ISO 10423.

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Annual report TC67/SC4/WG3 Wellhead and Xmass tree ISO10423vs API 6A

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  1. Annual report TC67/SC4/WG3Wellhead and Xmass tree ISO10423vs API 6A WG Scope:standardisation of wellhead and xmass trees plus valves WG convenor :Ries Langereis WG secretary :Alfred Kruyer

  2. WG 3 :ISO 10423 • Work programme :work on and issue the 4th edition of ISO 10423 issue end 2009 • Liaise with API SC6,ensure consensus between API 6A-20thvs. and the planned 4th version of ISO 10423 • Liaise with AWHEM to resolve their comments and contributions for vs.4.

  3. WG 3:ISO 10423 • New work group formed during 2006 • Balanced participation between manufacturers and users:Shell,BP,Total,N.Hydro,Vetco,FMC,Mokveld ,Cameron • During 2007 and 2008 many (in)formal meetings held,location an issue re participation,particularly for Americans

  4. 4th version ISO 10423 issues • API 6A 19thvs has implemented NACE ISO 15156;vs 2004 • New project group formed under Thierry Cassagne Total ,Derek Milliams Shell of the ISO 15156 maintenance panel involved . • The brief was :can API 6A 19thvs re NACE -2004 implementation be incorporated in vs.4 ?? • Main conclusion :No show stoppers • ISO 10423-4 will than require more extensive marking re Temp.,Cl,pH and H2S limitations • ASTM A 453,grade 660 is non acceptable for H2S, in particular for exposed bolts.

  5. 4th version ISO 10423 issues • Repair and Re-manufact.O.E.M. is incorporated into the ISO standard ,not in API 6A due to legal reasons • Severe hurricanes have convinced MMI,API SC6 that a repair standard is now required. • Shell,BP,Statoilhave reviewed current ISO standard and because of an OEM clause have concluded it is superior to API and other proposals . • API SC6 had formed active Wg on the repair clause via Exxon Sterling Lewis and Gary Devlin-Cameron. • New version proposed using OPD:original product definition.This proposal has been ballotted within API and approved so they say • ISO WG3 Have informally ballotted large users and they accept viz.OEM –OPD to ensure unity-not really happy. • API SC6 been informed that our WG3 accepts the new wording of OPD-version • Current DIS contains OEM,however vs.4 now includes OPD

  6. 4th Version ISO 10423 issues • Castings and forgings issue,workgroup formed under Alfred Kruyer • Background :API allows always castings,ISO instructs wrought products only used for PSL3,4.We must have consensus between ISO and API • Report presented at Gouda dec.2006,presented in Houston at API Sc6 jan. 2007 • API in agreement with findings and now accepts ISO and a ballot would be held within SC6 ,this was done during back-adapt vs.4 • ISO might recomsidercurrent position on castings vs. forgings • However will only react upon ballot results from SC6. • NACE ,ISO 15156 and ISO 13628 dealing with forgings only as it uses ISO 10423 as base document • New workgroup formed API/ISO.under Sterling Lewis/Maarten Kuipers. • Separate presentation of findings next week during SC6

  7. 4th version ISO 10423 issues • Another solution is to leave as is and await API SC20 to publish a RP for castings • Another solution is :wrought products shall be used ,however user and manufacturer may consider castings if … • Last year 26th june a WG3 meeting took place preceding the API meeting;a final position made forgings a requirement for PSL2 plus.

  8. 4th version ISO 10423 other issues • AWHEMs wish list had been made and forwarded to Shell secretariat,nowcompletely implemented • Normative references have been updated and are part of the new Vs.4 • Gas testing has been upgraded and approved within SC6,has been implemented in Vs.4 • Verification vs.validationnow implemented into Vs.4.

  9. Other issues • 4th edition revision has been manageable,went straight into FDIS • ISO 13628-4 subsea wellheads sister document.DIS ready and studied ,different tolerances-sorted. • Different hydrostatic test 5.4.6.2.1 • Contains a paint spec.

  10. Pozgrip proposal • Email received from Ben v Bilderbeek on perceived inadequacy of API annular seal tests,oneversus 8 for tubing • Wellheads needed to be as good as tubing • No external loads in API tests • API communication has made clear that standards are not for technical licensing

  11. Pozgrip proposal /observations • Annular seals are usually secondary • Proposal only for metal/metal seals however 80% market is elastomers • If there is such a big problem why have the major operators not come forward towards API/ISO?? • Main area difference between pozgrip and other metal/metal seals is its retraction ability

  12. Pozgrip further actions Advised to go via API SC6

  13. ISO 10423 wg 3-next meetings • Preceeding SC6 ,there will not be a WG meeting • Thursday 1st.july API SC6 meeting • Next Wg 3 meeting will depend on current events and ballots.

  14. BP disaster Deepwater Horizon • Meeting with dutch MMS ,together dealing with all N Sea regulators • Return of OEM mentioned,explained OPD • Verification-externally returning • Need for always annular pressure monitoring • Maintenance period to be prescriptive • Operators asked for re-assurance practices/techniques

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