Research And Application Of Effective Technology For Water Injection In Qianan Area

Research and application of effective technology for water injection in QianAn areaAbstract：The Daqingzi block of Jilin oilfield is a large low permeable oil fields，that isdiscovered and invested to develop in2000. in view of oilfield heterogeneity serious，complicated oil-water relationship，the most of expiration date of subzone water drive ispasted at present、the water flooding effect is became poor。Study on the effective waterinjection in the field。The research way of literature research, theoretical research andcombining field application for this paper is adopted，Aiming at the characteristic of oil fieldreservoir, the rise speed of water in high water cut development phase、oil remaining highdispersion, on the basis of fine geological research, using of static and dynamic monitoringdata, to identify of the type and amount of remaining oil, to research potential and distributionof remaining oil of high water cut period of multilayered reservoir。The developmenttechnique of multidisciplinary comprehensive analysis method，from oil reservoir effectivewater. Taking the injection water、cyclic water flooding、profile control、separate minelayerwater flooding and well network reconfiguration are used, to perfect injection-productionrelationship of single sand wells, controlling water cut rising, improving water floodingdevelopment effect of high water content stage, Further improving water drive recovery factor.For Daqingzi oilfield and other similar oilfield, the research results play a significant role inwater flooding development effectiveness.