提高凝析气藏采收率和气井产量新思路

:1000-2634(2007)02-0001-063,,,(,610500):,,,,:;;;;:TE112.12:A,,,,:(1),,,C3C4(C5+)(2),,(3),,,,[5](4),,,,:(a)();(b)();(c)();(d);(e);(f);(g)[1-4],,,(pd),,,,,,,,(),,[6]11.1(90%95%,C1)292Vol.29No.220074JournalofSouthwestPetroleumUniversityApr20073:2007-1-18:(2004BA616A02-03-03):(1935-),(),,,,,pd,,,:(1);(2),,[7]1.1.1[1]15,11,23m59m,16%18%(42%43%),0.7,A0.370.2MPa2/(103m3/d)1.2MPa,,22%23%,34,A,0.31115,(1),N2C1,CO2,,CO2C1(2),,,,,,(3),,(4),(5),,0.30.4,,1.52,1.1.2[8],1983,,,42004300m,5100mD,6%17%,35MPa,1015MPa,,949,(3060)104m3/d,276,(210)104m3/d,2090,171993,,200m,210m3,26.4104m3,,,1995,,199625199621561.8104m3,(6.79.0)104m3/d,,1996224(4.55.5)104m3/d,(4.04.5)104m3/d,1996320,,A0.680.34MPa2/(103m3/d),,(36)1.2(C2C3C4)C3C4,15C3,2:10m,,172722007m,50%,,6,23%26%1.4,,,,C320,122151.3+,,,,HattersPondU2nit326#15648.5m,19976Norphlet38.4m,k=1.25mD,=11.7%Smackover,7m,k=0.34mD,=8.5%51P227P8Norphlet5569.65586m22.61MPa7.56104m3/d,55.3m3/d,,55675558m,18.9MPa,14MPa,0.7104m3/d13.8m3/d200012159m3,0.7951.272m3/min,1.4104m3/d,24.96m3/d,0.68-1.9[5]+,(EGMBE,EthyleneGlycolMonobutylEther),60%,?1.4CO2CO2,0.30.51.5,(1),:(a);(b);(c);(d);(e);(f);(g),;(h),AB,,Q/(pf-pwf)Q/(p2f-p2wf)(2),,:(a);(b);(c);(d);(e)(),35,,:(1),:(a)pmax,pmax25%30%;(b)()(2),1520m,,CO2C1,N2()(3)32:,,(4),(5)(30%50%),,,2(pd),,,,,,,,,:;N2;;,,[1-3]2.1pmax[1]2.1.1C1:81.2%,C2:7.32%,C3:3.13%,C4:1.12%,C5:6.14%,C+5:1:18%(M1=107),2:79%(M2=162),3:3%(M3=237)51MPa,113,420g/m3;(pmax)7.7MPa,2MPaPVT32%,3m,25%,k4.7mD22167.76MPa3MPa(1)2PV()C1,22MPa,C2C4100%,C5+32%,,1:72%,2:19%,3:9%(2)36MPa(),C2C4,C122MPa,3MPa,0.3,,…V=C1(PV)22MPaC1(PV),37.7MPaC5+7.722MPaC5+(3),(),1m3,,C2C82.1.2C2C4(C2C6),pdC2C45%,5%30%,(10%20%)(85%95%)C5+C2C4,(1),C1C3C41C1C3C4C5C6C191.0003.03.03.0276.010.05.03.03.03.0361.020.010.03.03.03.033(80)3(80)C3C4C5+(),pd(14MPa),,42007(C5+),C5+C2C4,C2C4/C5+()2,C2C4,,2.1.3,(pmax)(710MPa)(C2C6),10,,:(1)();(2)(3);(4);(5);(6)4295108m3,,1.416108t,36.3MPa,62,pd=32.4MPa,360g/m36(),,21968,,,1973,208050,(180190)108m3/a,19821983,,1108t,70%,2090(YK28),[1,2]YK2842(2)2/106m3/106m3/MPa/K/108m3/108m3/104t/106m3C2m38.5330.835.2032415.6314.635.853.45C2b+C1pr12.498.125.273264.143.871.550.91C1sr+vn28.5023.095.3232911.7410.984.392.61C1mh6.443.225.363300.171.540.620.3685.9665.2531.6831.0212.417.331-;2-;3-;4-;5-4:1993917199811,17.12108m3,23.77108m3(,()8.30108m3,48.5%)C5+2.43104t(),9.93104t,C2C45.19104t()46.31104t,5C5+1tC2+10104m3,199811(2.052.20)104m3/t,1tC5+44104m3/t,199811(4.97.0)104m3/t,2.2(1)()(),,52:(2),,(3),[4,6-8],,,,,3(1)+(+N2),,(2),:[1]Tep2CakucoPM.TheDevelopmentofNaturalGasField[M].:Mocka,1999.[2],,,.[M].:,2006.[3],,,.[M].:,2004.[4],,,.[J].,2006,28(6):36.[5]GarzonFO.Laboratoryandfieldtrialresultsofconden2satebankingremovalinretrogradegasreservoir:Casehis2tory[C].SPE102558,2006.[6],,,.[J].,2003(5):76-79.[7]HawesRI.Feasibilitystudiesofwaterfloodinggascon2densatereservoirs[C].SPE15875,1986.[8]Henderson.Waterfloodingofgas2condensatefluidsincoresaboveandbelowthedewpoint[C].SPE22636,1991.()200751,,!200742062007JOURNALOFSOUTHWESTPETROLEUMUNIVERSITYVol.29No.2Apr2007[ABSTRACT]NEWWAYTOIMPROVEGASWELLPRODUCTIONANDCONDENSATEGASFIELDSRECOVER2YFACTORLIShi2lun(StateKeyLaboratoryofOilandGasReservoirGeologyandExploitationSouthwestPetroleumUniversi2ty,ChengduSichuan610500,China),GUOPing,DUJian2fen,etal.JOURNALOFSOUTHWESTPETROLEUMUNIVERSITY,VOL.29,NO.2,1-6,2007(ISSN1000-2634,INCHINESE)Abstract:Mostofthesaturatedcondensategasreservoirswithmiddleorlowgascondensatearedevelopedbyde2pletiontype.Someareinthemiddleorlateperiodofdevelopment.Howtoimprovegascondensatewellproductionandtherecoveryofgascondensateingasfieldhasbecomeakeyproblem.Thearticleintroducedthreetechniquestoimprovesinglewellproductionandfourwaystoimprovegascondensaterecoveryofcondensategasreservoirde2velopedbyinjectinggas,thendiscussedsomedevelopmentschemesofcondensategasreservoirinthemiddleandlateperiodandproposedpurposefullythreeopinionsaboutdevelopingcondensategasreservoirsbywater2flood.Wehopethatthestudyonthiskindfieldsinthemiddleandlatedevelopmentperiodcangetenoughattention.Keywords:condensategasreservoir;recoveryfactor;development;middleandlateperiod;gasinjectionSTUDYONCORESTRESSSENSITIVITYFORGASRESERVOIRWITHTWOEXPERIMENTMETHODGUOPing(StateKeyLaboratoryofOilandGasReservoirGeologyandExploitationSouthwestPetroleumUniver2sity,ChengduSichuan610500,China),ZHANGJun,DUJian2fen,etal.JOURNALOFSOUTHWESTPETRO2LEUMUNIVERSITY,VOL.29,NO.2,7-9,2007(ISSN1000-2634,INCHINESE)Abstract:CorestresssensitivitytestinlabgenerallyuseChangeOutsidePressure&KeepInsidePressureTestmethodatpresent,whichisnotaccordwithactualgasfielddevelopmentprocessthatoverburdenpressuredonotchangewhilefluidpressuredecrease.ThispaperputforwardChangeInsidePressure&KeepOutsidePressureTestmethodanduseSuligegasfieldlowpermeabilitycoredoChangeOutsidePressure&KeepInsidePressureTestandChangeInsidePressure&KeepOutsidePressureTestattheconditionofformationtemperature.StudyindicatethatcorestresssensitivityofChangeInsidePressure&KeepOutsidePressureTestislittlethanChangeOutsidePressure&KeepInsid