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:100020747(2009)032039220621,2,1,1(1.;2.):973(2007CB209500);(07202Z201):2,,,177.8mm(7in),2,,,1.52.1,,614:2;;;;;:TE37:ADevelopmentpatternsandkeytechniquesofcoal2formedKela2gasfieldLiBaozhu1,ZhuZhongqian2,XiaJing1,MaCaiqin1(1.PetroChinaResearchInstituteofPetroleumExploration&Development,Beijing100083,China;2.PetroChinaTarimOilfieldCompany,Korla841000,China)Abstract:Kela2gasfieldinTarimBasinisararelarge2scalefull2contained,super2pressureddrygasfieldintheworld,anditsdevelopmentisextremelycomplicated.Afterdetailedtechnologicalresearchbreakthrough,thedevelopmentconceptofdrillingfewhigh2production2ratewellsisformed,thatis,themainproducingwellsuse177.8mm(7in)diametertubinginordertomakefulluseoftheformationenergy.Thefine3Dgeologicalmodelofhugethicksandstonereservoirsisbuiltconstrainedbythelateralreservoirpredictiondata,sedimentaryfaciesdataandsoon.Andthedevelopmentmechanismofthesuper2pressuredgasreservoirshasbeenstudiedbasedonthismodel.Therockdeformationeffectmustbeincludedinthedeliverabilityevaluation.Amaterialbalanceequationforsuper2pressuredgasreservoirswithaquiferdriveisderivedforthedynamicreservescalculation,andthereservesderivedfromtheconventionalpressuredrawdownmethodis1.5to2.1timestheactualdynamicreserves.Atemperaturecorrectionmethodisformedtosolvethedeclineofthewellheadpressurebuild2upcurvesofsuper2pressuredgaswellsatthelaterstage,andthismethodisverifiedtobecredible.Keywords:Kela2gasfield;super2pressured;developmentconcept;developmenttechnique;rockdeformation;deliverabilityevaluation02,,47km2,35004100m(2840108m3)(1522)(552.5m)(74.3MPa)(2.02)(500104m3),,,,2,10,200412,2007,1100108m3[1,2]200812336108m3,3000104m3,82%,12,,211411042097104m3,4MPa,500104m3,,29320096PETROLEUMEXPLORATIONANDDEVELOPMENTVol.36No.33:;;(),,;(1),88.9mm(3-in),500104m3,63MPa,177.8mm(7in),2.6MPa,,,,2177.8mm(7in),22115,150104m3300104m3,60%85%23[3]:100104m3(),88.9mm(3-in);100104m3250104m3(),177.8mm(7in)114.3mm(4-in);,300104500104m3,250.8mm+177.8mm(9(3in+7in)177.8mm(7in)(2)122KL22739320096:222.124,5(Rick),,2628Hz100ms,,1020,,,,,[4,5]2.2:,,,2.3,,,,2.4,,:;;,,;,;,322.02,,,,,,,[6]2329,:,,(3),,,,,22,,,,,:,;,,,,,,:D=/i;KD=K/Ki;CpD=Cp/Cpi3242,,,,,,[7],,,4.1[8]:(p)=2ppmKiexp[-(pi-p)]p(p)Z(p)dp(1)493Vol.36No.3,Standing2KatzH2Y,L2G2E,2(4),,25MPa,,25MPa,,,424.2,:1-exp[-(e-w)]=aQ+bQ2(2)(2),,,1-exp[-(e-w)]QQ,ab(a,),ab,QAOF:QAOF=-a+a2+4bc2b(3)c=1-exp[-(e-sc)](4),25MPa,,,,,(1)5(),,,(p/Z),,[9,10],,,(),:BgGp+BwWp=BgiGBgBgi-1+BgiGSwiSgiCw(pi-p)+BgiG1Sgi(1-eA)+BWeD(tD,rD)pe(5)A=-Cpi1-(t-p)1--(t-pi)1-tD=3.6KwtwwCerg2=trD=re/rg,,(5)G,(5):Y=G+BX(6)Y=(BgGp+BwWp)/F(7)X=1F6nj=1WeD(tD,rD)pej(8)F=BgiBgBgi-1+SwiSgiCw(pi-p)+1Sgi(1-eA)(9),WeDtDrD,,45(6),X,;G,,,rDtD=t,59320096:2,(6),GBB,22799.7108m3,,,24204.6108m3,(2799.7108m3)1.5,;,2,5775.9108m3,2.1,,6,,;,CO2,(10104m3),,();,,,,:(),,(5);,,,,,,,,,,,,2:Ramey,,;,,CullenderSmith2,,,,2,,[11214](6),7,,,,,,,,,,2,693Vol.36No.3:D;,f;i,f;KD;K,10-3m2;Ki,10-3m2;CpD;Cp,MPa-1;Cpi,MPa-1;,m2MPa2(mPas)-1;p,MPa;pm,MPa;pi,MPa;,MPa-1,;(p),mPas;Z(p)p,;e,w,m2MPa2(mPas)-1;a,b;Q,104m3;QAOF,104m3,sc,m2MPa2(mPas)-1;Bg,Bgi;Bwp;Gp,m3;G,m3;Wp,m3;Cw,MPa-1;Swi,Sgi,f;,;t,MPa;B,m3/MPa;WeD;tD;Kw,10-3m2;w,f;w,mPas;Ce,,MPa-1;re,m;rg,m;rD;t,d;,d-1;pe,MPa;j;pejj:[1].200628.4%[J].,2007,34(1):107.WangDarui.NaturalgasproductionofPetroChinaincrease28.4%duringthefirstthreequartersofyear2006[J].PetroleumExplorationandDevelopment,2007,34(1):107.[2].2[J].,2008,35(3):307.HuangChangwu.Constructionstartedinthelargestcondensategasfield,Dina2[J].PetroleumExplorationandDevelopment,2008,35(3):307.[3],,,.2[J].,2004,15(4):3312336.SongWenjie,WangZhenbiao,LiRuyong,etal.Developmenttechnologyforabnormalhighpressureandlargescalemono2blockgasfield:TakingKela2gasfieldastheexample[J].NaturalGasGeoscience,2004,15(4):3312336.[4],,.[J].,2008,35(2):2052214.RenDianxing,LiFanhua,LiBaozhu,etal.Geomodelingtechnologyundermultifactorcontrol[J].PetroleumExplorationandDevelopment,2008,35(2):2052214.[5],,,.11[J].,2007,34(2):2162221,251.PengShimi,ZhouHengtao,LiHaiyan,etal.Phasedflowunitmodelestablishmentandremainingoilprediction:AnexamplefromJing11blockinBieguzhuangOilfield[J].PetroleumExplorationandDevelopment,2007,34(2):2162221,251.[6],,,.2[J].,2003,14(1):60264.ZhuZhongqian,WangZhenbiao,LiRuyong,etal.Characteristicsoftherockdeformationinabnormalhigh2pressuregasreservoirandthestudiesofitsinfluenceongasreserviorexploitation:ExamplefromtheKela2gasfield[J].NaturalGasGeoscience,2003,14(1):60264.[7],,.2[J].(D:),2004,34():1342142.SunLongde,SongWenjie,JiangTongwen.ExperimentalstudyonsensibilityofreservoirstressofKela2gasfieldanditsimpactsonproductivity[J].ScienceinChina(Ser.D:EarthSciences),2004,34(Supp.):1342142.[8],,,.205[J].,2005,32(5):1182120.ZhuYuxin,XieXingli,SongWenjie,etal.InfluenceofrockdeformationontheproductivityofWellKela205,Kela2GasField,TarimBasin,NWChina[J].PetroleumExplorationandDevelopment,2005,32(5):1182120.[9],,,.[J].,2007,28(3):96299.XiaJing,XieXingli,JiGuang,etal.Derivationandapplicationofmaterialbalanceequationforover2pressuredgasreservoirwithaquifer[J].ActaPetroleiSinica,2007,