API-Spec-7-1-Addendum-1

SpecificationforRotaryDrillStemElementsANSI/APISPECIFICATION7-1FIRSTEDITION,MARCH2006EFFECTIVEDATE:SEPTEMBER2006ISO10424-1:2004(Modified),Petroleumandnaturalgasindustries—Rotarydrillingequipment—Part1:RotarydrillstemelementsAddendum1March2007EffectiveDate:September1,20071Addendum1toSpecificationforRotaryDrillStemElementsAddthefollowingnewClause10.RenumberthecurrentClause10NondestructiveexaminationofbarsandtubesandsubclausesasClause11.10HeavyWeightDrillPipe(HWDP)10.1GeneralThisstandardcoversthemanufacturingspecificationsofheavyweightdrillpipethatismostcommonlyutilizedinbottom-holeassemblies.Thisproductshouldnotbeconfusedwithheavywall(orheavyweight)drillpipemanufacturedtomeetAPISpec5D.Itshouldbeunderstoodthatthematerialsspecifiedhereinaregenerallynotregardedassuitableforsourserviceorotherhighlycorrosivedrillingconditions,andtheUserisadvisedtotakethisintoaccountwheninitiatingpurchaseagreementsforheavyweightdrillpipeifsuchdrillingconditionsareanticipated.10.1.1SizesHeavyWeightDrillPipe(HWDP)shallbefurnishedinthesizesanddimensionsshowninTable27andasillustratedinFigure11.Dcu31Ft±6In21MinDeu27Min24Min18°18°R1.5TYP(1)135degreetaperonthepinendatthemanufacturersoption.2Alldimensionsareininches,exceptasnoted.3Thecenterupsetshallbelocatedapproximatelymidlengthofthetube.Note–TheabovedimensionsapplytobothintegralandweldedHeavyWeightDrillPipe.Figure11—DimensionsofHeavyWeightDrillPipe10.1.2OutsidediametertolerancesThetubeandtooljointoutsideandinsidediameterdimensionsandtolerancesshallcomplywiththosespecifiedinTable27.10.1.3TooljointalignmentThemaximumangularmisalignmentbetweenthetubeandtooljointshallbe0.010in/infor4intubeODandsmaller,and0.008in/inforlargersizes.Themaximumparallelmisalignmentshallbe0.125in.Themisalignmentmeasurementsshallbetakenatthemid-pointoftooljointoutsidediameter.210.1.4BoresAllweldedandintegralHWDPboresshallbegaugedwithadriftmandrel10ftlongminimum.ThedriftmandrelminimumdiametershallnotbelessthantheMinDriftDiametershowninTable27.Ifintegralproductisdrilledfromeachendthematchpointshallbelocatedunderthecenterupset.AlldimensionsareininchesSizeTubeOD(+1/16,-1/32)TubeID1ToolJointOD(+1/16,-1/32)2ToolJointID(+1/8,-0)ConnectionMaxElevatorUpsetDiaCenterUpsetDia.(+1/16,-1/32)Min.DriftDia.3DeuDcu21/421/4231/231/221/1643/4(47/8,5)21/16NC3837/84113/1621/221/221/44429/1651/429/16NC4043/1641/225/16211/16211/1627/1623/423/421/241/241/2213/1661/4213/16NC46411/16529/1655365/83NC5051/851/223/431/431/4333/833/831/837/837/835/83/451/251/247(71/4,71/2)451/2FH511/16633/44433/441/241/241/465/865/858(81/4,81/2)565/8FH615/1671/843/41MaximumtubeIDis1/8largerthannominal.MinimumtubeIDiscontrolledbythedriftrequirement.2OptionalToolJointODsshowninparenthesis,tobeagreedbetweenpurchaserandmanufacturer.3DriftDiameterisbasedonIDtolerancesofheavywallpiercedtubeusedforthecentersection.Table27—DimensionsofHeavyWeightDrillPipe10.1.5Materialinspectionrequirements10.1.5.1IntegralHWDPtube,andalltooljointsEachbarortubeusedtomanufactureHWDPtooljointsorintegralHWDPshallbeexaminedforbothsurfaceandinternaldefectsinaccordancewithClause11ofISO10424-1/APISpec7-1.10.1.5.2WeldedHWDPtubeTubesmanufacturedfromnormalizedmaterialshallreceiveavisualinspectionoftheODandID.TubesmanufacturedfromquenchandtemperedmaterialshallbeexaminedforbothsurfaceandinternaldefectsinaccordancewithClause11ofISO10424-1/APISpec7-1.10.1.5.3DispositionofdefectsAlldefectsdiscoveredindriftingorinspectionshallberemoved,withinallowabletolerances.10.1.6ExternalsurfaceconditionTheexternalsurfaceonthecenterupsetshallbehotrolledmillfinishedorbetter.Hotrolledmillfinishimperfectionsmayberemovedbygrinding.Ifimperfectionsareremoved,thedepthofremovalshallcomplywithTable28andgrindsshallbecontouredwiththesurfaceoftheupset.ExternalsurfaceimperfectionsinmachinedareasofthetubeODmaybeblendedtoremovethemifthedepthislessthan1/16″.Diametertolerancesshallnotbeappliedtolocalizedareasofimperfectionremoval.312Centerupsetdiameter(Dcu)MaximumstockremovalfromsurfaceOver2½to3½inclusive0.072Over3½to4½inclusive0.090Over4½to5½inclusive0.110Over5½to6½inclusive0.125Over6½0.155Table28—AllowableSurfaceImperfectionRemoval10.1.7Connections10.1.7.1SizeandtypeHWDPshallbefurnishedwithboxupandpindownconnectionslistedinTable27.TheconnectionsshallconformtothedimensionalandgaugingrequirementsofAPISpec7.NOTEAlternativeconnectionsnotlistedinTable1arenotcoveredbythisstandard.WhenalternativeconnectionsarespecifiedinthepurchaseagreementbytheUser,theyshouldbespecifiedtoconformtothemechanicalproperties,dimensions,markingandgaugingrequirementsspecifiedbythemanufacturerofthealternativeconnection.10.1.7.2ConnectionstressrelieffeaturesStressrelieffeaturesareoptional.Whenspecifiedinthepurchaseagreement,stressrelieffeaturescomplyingwiththedimensionsspecifiedinAPISpec7shallbeprovided.Thesurfacesofstressrelieffeaturesshallbefreeofstressriserssuchastoolmarksandsteelstencilimpressions.Laboratoryfatiguetestsandtestsunderactualserviceconditionshavedemonstratedthebeneficialeffectsofstressreliefcontoursatthepinshoulderandatthebaseoftheboxthread.Itis