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1、石油勘探與開發(fā)2O10年8月PETR0IEUMEXPL()RATI()NANDDEVELOPMENTVo1.37No.4483文章編號:10000747(2010)04—048307儲集層構(gòu)型研究在油田精細開發(fā)中的應用曾祥平(中國石化勝利油田分公司孤島采油廠)基金項目:國家“十五”科技攻關項目“大中型油田勘探開發(fā)關鍵技術(shù)”(2003BA613A02)摘要:勝利油區(qū)的孤島油田屬于強非均質(zhì)河流相砂巖油藏,特高含水期應用儲集層構(gòu)型理論進行油藏精細描述,將儲集層結(jié)構(gòu)層次進行細分,由原來的單砂層、單砂體進一步細分到單一成因單砂體,研究砂體內(nèi)部構(gòu)型及各種微地質(zhì)界面對剩余油的控制作用
2、,在老油田開發(fā)調(diào)整和挖潛中取得了良好的應用效果。實踐證明,主河道厚油層邊灘和心灘內(nèi)部結(jié)構(gòu)復雜,發(fā)育的側(cè)積夾層和落淤層夾層具有層內(nèi)分隔特性,有利于水平井開發(fā)挖掘頂部剩余油潛力;河流相二元結(jié)構(gòu)的上部溢岸沉積和邊部廢棄河道薄砂體物性差、動用程度低,是后期開發(fā)的重要潛力區(qū);復合曲流帶砂體局部存在廢棄河道,形成半連通和不連通,通過識別分析,進一步完善平面注采對應關系,可提高注采效果;單一成因砂體內(nèi)部可以細分為若干個不同的流動單元,分析其流動特性差異,有助于治理油藏水侵。圖8表1參1O關鍵詞:儲集層構(gòu)型;單一成因砂體;剩余油;精細開發(fā);孤島油田中圖分類號:TE323文獻標識碼:AA
3、pplicationofreservoirstructureresearchinthefineexploitationofoilfieldsZengXiangping(G“dPetroleumProductionCompany,SL0F,Sinopec,Dongying257231,Cina)Abstract:GudaoOilfieldintheShenglioilarea,asatypicalstrongheterogeneoussandstonereservoiroffluvialfacies,hassuccessfullyappliedthereservoirco
4、nfigurationtheorytodescribereservoirsfinelyintheextra-highwatercutstage.Itfinelydividedthestructura1levelsofreservoir:theoriginalsinglelayersandstoneandmonc~sandbodyarefurtherdividedintosingle-originmonosandstOnebodies.Theeffectofinternalconfigurationsandmicro-geologicinterfacesinsandsto
5、nesontheremainingoildistriburionwasstudied,achievingfavorableeffectsonexploitingadiustmentandtappingpotentia1.Practicesproved:(1)theinterna1struerureiscomplicatedinmarginalbanksandchannelbarsinthicklayersofthemainstreamchannel,andtheinterlayersinlateraldepositionsanddroppingsiltshavesome
6、separationcharacteristics,favorableforhorizontalwellstOtapremainingoilinthetoDofthick1ayers;(2)theupperoverbankdepositsinthedoublestructureoffluvialfaciesandthethinsandstonelayersinmarginalabandonedstreamchannels,whichhaverelativepoorphysicalpropertiesandlowexploitingdegree,areallimporta
7、ntDotentia1areasatthelaterperiodofdevelopment;(3)abandonedstreamchannelsexistinginsidethecomplexcurvingflowzonesofthereservoirformsemiconnectionornoconnection,affectingtheeffectofdevelopment,andanalyzingandidentifyingthemarehelpfu1t。improvethecorrespondingrelationshipbetw