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时间:2020-01-13
《储集层构型研究在油田精细开发中的应用.pdf》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、石油勘探与开发2O10年8月PETR0IEUMEXPL()RATI()NANDDEVELOPMENTVo1.37No.4483文章编号:10000747(2010)04—048307储集层构型研究在油田精细开发中的应用曾祥平(中国石化胜利油田分公司孤岛采油厂)基金项目:国家“十五”科技攻关项目“大中型油田勘探开发关键技术”(2003BA613A02)摘要:胜利油区的孤岛油田属于强非均质河流相砂岩油藏,特高含水期应用储集层构型理论进行油藏精细描述,将储集层结构层次进行细分,由原来的单砂层、单砂体进一步细分到单一成因单砂体,研究砂体内部构型及各种微地质界面对剩余油的控制作用
2、,在老油田开发调整和挖潜中取得了良好的应用效果。实践证明,主河道厚油层边滩和心滩内部结构复杂,发育的侧积夹层和落淤层夹层具有层内分隔特性,有利于水平井开发挖掘顶部剩余油潜力;河流相二元结构的上部溢岸沉积和边部废弃河道薄砂体物性差、动用程度低,是后期开发的重要潜力区;复合曲流带砂体局部存在废弃河道,形成半连通和不连通,通过识别分析,进一步完善平面注采对应关系,可提高注采效果;单一成因砂体内部可以细分为若干个不同的流动单元,分析其流动特性差异,有助于治理油藏水侵。图8表1参1O关键词:储集层构型;单一成因砂体;剩余油;精细开发;孤岛油田中图分类号:TE323文献标识码: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
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