ISSN1008-9446CN13-1265/TE承德石油高等专科学校学报JournalofChengdePetroleumCollege第25卷第2期,2023年4月Vol.25,No.2,Apr.2023精细注水在渤海某油田J区的应用研究王静1,杨彬2(1.中海油安全技术服务有限公司,天津300452;2.中海石油(中国)有限公司天津分公司,天津300452)摘要:渤海某油田J区为渤海湾典型的湖相三角洲稠油油田,主力开发层系为东营组下段的Ⅰ和Ⅱ油组,纵向上可细分为8个小层,平均地层原油黏度为291mPa·s。在纵向上、横向上存在多个油气水系统。常规注水开采影响整体水驱油的效果,各种矛盾在油田进入高含水期后更加突出。为实现油田高效开发,减小层间矛盾影响,对注水井实施分段防砂,并根据油井每月的产液量,利用KH法劈分到各小层,计算出对应层段的配注量,实现了对区块单井和单层理论上的分层配注。精细注水改变了油田开发指标,控制了油田含水上升,减缓了油田自然递减,使区块连续3年自然递减为零,取得了较好的降水增油效果,为相似油田的开发提供了经验。关键词:稠油油藏;精细注水;分层配注;自然递减中图分类号:TE357.6文献标志码:B文章编号:1008-9446(2023)02-0011-06ApplicationofFineWaterInjectioninBlockJofanOilfieldinBohaiSeaWANGJing1,YANGBin2(1.CNOOCSafetyTechnologyServicesCo.,Ltd.,Tianjin300452,China;2.CNOOCTianjinBranch,Tianjin300452,China)Abstract:BlockJofanoilfieldinBohaiBayisatypicallacustrinedeltaheavyoilreservoirinBohaiBay.ThemaindevelopmentstrataaretheIandIIoilformationsinthelowerDongyingFormation,whichcanbesubdividedinto8smalllayersvertically,andtheaverageformationcrudeoilviscosityis291mPa·s.Therearemanyoil,gasandwatersystemsintheverticalandhorizontaldirections.Conventionalwaterinjectionproductionaffectstheoveralleffectofwaterdrive,andvariouscontra-dictionsbecomemoreprominentwhentheoilfieldentershighwatercutstage.Inordertoachieveef-ficientdevelopmentofoilfieldandreducetheimpactofinterlayercontradictions,sandcontrolisim-plementedinsectionsforwaterinjectionwells.ByusingtheKHmethod,monthlyliquidproductionofoilwellsissplitintoeachsmalllayer,theinjectionallocationofcorrespondinglayeriscalculated,thusthetheoreticallayeredinjectionallocationofsinglewellsandsinglelayersintheblockarereal-ized.Finewaterinjectionhaschangedtheoil...
