全井筒固井储气井应力分析及施工工艺

:2008210222:(19632),,,,1983,:100123482(2009)01200542051,2,3,2,4,1,1(1.,643000;2.,710021;3.,610017;4.,710004):,,2,,:;;;:TE256:AStressAnalysisforCementedCNGStorageWellandItsConstructionProcessRANXun1,QINJian2zhong2,TANXiao2ping3,LIMan2jiang2,ZHANGJing2wen4,ZHUJia2fu1,LIUGuo2wei1(1.ZigongLiyuanScience&TechnologyCo.,Ltd.,Zigong643000,China;2.DrillingEngineeringCompany,ChangqingPetroleumAdministrationBureau,Xian710021,China;3.SichuanHuayouGroupCorporationLimited,Chengdu610017,China;4.ShaanxiCityNaturalGasandHeatAssociation,Xian710004,China)Abstract:AmodeloffullwellboreusedasCNGstoragewasestablished.Thecalculationofin2terfaceonradialcompressivestressbetweencementingannualandwellbore,frictionforceandthestressandstrainonburiedwellboreweremade.TheminimumdepthburiedundergroundofCNGstoragewascalculatedaswell.Basedontheresultfromcalculation,twopresentcementingprocessingwerestudiedinordertoensuresafecementing.ThisofferedthetheoreticalbasicfordesignandconstructionofCNGstoragewell.Keywords:fullwellboreCNGstorage;radialcompressivestress;interfacefriction;cementingprocess1,:D=177180mm(7),si=10136mm,Dh=241130mm(9-),104m,1025MPa,1,p=gh(1),,=1800kg/m3;g=918m/s2;h,h=0104mp=01.836MPa,,,,,,,200938154OILFIELDEQUIPMENT2009,38(1):5458©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(2)12,,pifF1,,3,,,,,,,,,,,,,32[1],,pfi=1Bpi(2)B=1+EisiEoRiK2o+1K2o-1+o(3)Ko=RoRf(4),Ri,78.54mm;Rf,88.90mm;Ro,mm;si,10136mm;Ei,2110105MPa;Eo,261465103MPa;o,0114;pi,MPa;pfi,MPa;B2.1Ro120165mm,55381,:©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.=241130mm(9-),Ro=120165mm,(3)B=4.679893pi=10MPaB(2)pfi=2.1368MPapi=25MPaB(2)pfi=5.3420MPa2.2Ro500mm,,,6m300500mm,Ro=500mm,(3)B=2.261718pi=10MPaB(2)pfi=4.4214MPapi=25MPaB(2)pfi=11.0535MPa2.3,,(3)B=1+EisiEoRi[1+o](5)(5)B=2.193222pi=10MPaB(2)pfi=4.5595MPapi=25MPaB(2)pfi=11.3988MPa33.1,,F1=2fRfhpfi,h,mm;Rf,8819mm;pfi,MPa;f,[2],,0145,,0135,,01353.2h,,F=R2ipi,Ri,78154mm3.3,,F1-F=0h=R2ipi2fRfpfi=BR2i2fRf(6)Ro=120165mm,B=4.679893,(6)h=463.89mmRo=500mm,B=2.261718,(6)h=224.193mmRo,B=2.193222,(6),h=217.403mm3.4D1=D-2si=157.08mmD/D1=1.1321.2,,[1],r=(pi-pif)D12si=(F-F1)D1si=Dpi4si-fDhpfiD1si,d=-rEdh=D1pi4si-(pi-pif)D12si-fDhpfiD1sjdhE,=D1pi4si-(pi-pif)D12sihE-fDh2pfi2D1siE=D14si-(B-1)D12siB-fDl2D1BsihpiE(7),,0.3;E,210GPa;3.4.1Ro120165mmB=4.679893,h=463.89mmpi=10MPa,(7)=0.007245mmpi=25MPa,(7)=0.018114mm6520091©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.=2.261718,h=224.193mmpi=10MPa,(7)=0.009049mmpi=25MPa,(7)=0.022621mm3.4.3B=2.193222,h=217.403mmpi=10MPa,(7)=0.009100mmpi=25MPa,(7)=0.022749mm4425,[3],3.5MPa,[4],F3F3=12ni=1UiLii(8),Ui,mm;Li,mm;iLi,MPa,4[4],[]=2030kPa(),20kPa,(8)F3=12(U1L1+U2L2)(9),U1,1086199mm;L1,6000m;U2,mm;L2,mm4F3=F(,),L2=2R2ipiU2-U1L1U2(10)(10)L2=55.306mL1+L2=61.306m,611306mm55.15.1.1,5m,5.1.2,1850kg/m3,;425;SY/T5374.11:,,5.1.3SY/T6592SY/T6641,5.2,,[5],,,,,5,,,,,,,,,,,[6]75381,:©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.=2.1368MPa,,,6,,,,,661),3715MPa,,0103458mm20,,,2),,,3),4),,,,5),,[2008]637GB50156-2002SY/T6535,:[1].[K].:,2004.[2].[K].:,2007.[3].[K].:,2006.[4].[M].:,2005.[5],,,.CNG[J].,2008,37(9):972100.[6],,,.[J].,2008,37(12):86288.[7],,,.CNG[J].,2007,36(8):84287.8520091©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.