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1、Addendum1November2003AddendumEffectiveDate:May1,2004RecommendedPracticeforDrillStemDesignandOperatingLimitsAPIRECOMMENDEDPRACTICE7GSIXTEENTHEDITION,AUGUST1998EFFECTIVEDATE:DECEMBER1998ERRATA:MAY2000Addendum1toRecommendedPracticeforDrillStemDesignandOperatingLimitsPage3,4.5:Change“A
2、.8”to“A.9”Page5,Table2,Footnote:Change“A.15”to“A.16”Page12,Table8andPage14,Table9,Note4:53Change“/8inch”to“/4inch”inNote4ForPages15–17,mostcorrectionsforTable10areinColumn7.AdditionalcorrectionsinTable10:Page15:332/8in,4.85lb/ft,E75drillpipewith2/8OHLWconnectionsthemakeuptorqueforp
3、remiumclass(Column10)shouldbe“1,723”332/8in,4.85lb/ft,E75drillpipewith2/8OHLWconnectionsthemakeuptorqueforClass2(Column13)shouldbe“1,481”332/8in,6.65lb/ft,E75drillpipewith2/8OHSWconnectionsthemakeuptorqueforpremiumclass(Column10)shouldbe“2,216”332/8in,6.65lb/ft,E75drillpipewith2/8O
4、HSWconnectionsthemakeuptorqueforClass2(Column13)shouldbe“1,967”772/8in,6.85lb/ft,E75drillpipewith2/8OHLWconnectionsthemakeuptorqueforpremiumclass(Column10)shouldbe“3,290”772/8in,6.85lb/ft,E75drillpipewith2/8OHLWconnectionsthemakeuptorqueforClass2(Column13)shouldbe“2,804”772/8in,10.
5、40lb/ft,E75drillpipewith2/8OHSWconnectionsthemakeuptorqueforpremiumclass(Column10)shouldbe“4,411”772/8in,10.40lb/ft,E75drillpipewith2/8OHSWconnectionsthemakeuptorqueforClass2(Column13)shouldbe“4,079”772/8in,10.40lb/ft,E75drillpipewith2/8PACconnectionsthemakeuptorqueforpremiumclass(
6、Column10)shouldbe“3,424”772/8in,10.40lb/ft,E75drillpipewith2/8PACconnectionsthemakeuptorqueforClass2(Column13)shouldbe“3,424”Page16:114/2IEU-X95,NC46,Column6,change“3/4”to“3”Page17:52727Lastline,Column11,minimumODfor6/8in,27.70lb/ftS135drillpipe,Class2,change“7/64”to“7/32”12APIRECO
7、MMENDEDPRACTICE7G—ADDENDUM1Table10—RecommendedMinimumOD*andMake-upTorqueofWeld-onTypeToolJointsBasedonTorsionalStrengthofBoxandDrillPipe(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)PremiumClassClass2Min.Min.BoxMake-upMin.Min.BoxMake-upDrillPipeNewToolJointDataODShoulderTorqueforODSho
8、ulderTorqueforNominalNomNe
