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时间:2020-01-14
《大庆油田三元复合驱注入时机.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、2015年10月大庆石油地质与开发Oct.,2015第34卷第5期PetroleumGeologyandOilfieldDevelopmentinDaqingVo1.34No.5DOI:10.3969/J.ISSN.1000—3754.2015.05.017大庆油田三元复合驱注入时机陈金凤李洁张丽娟(1.大庆油田有限责任公司第二采油厂,黑龙江大庆163461;2.大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712)摘要:应用矿场统计、物理模拟、数值模拟3种方法研究了注入时机对三元复合驱效果的影响
2、。结果表明:在油田进人高含水期后,三元复合驱注人时机越早最终开发效果越好,含水率为86.0%~98.0%时开展化学驱,初始含水率每下降1百分点提高采收率0.3~0.7百分点;油层非均质越强,注人时机对三元复合驱效果影响越大,越应尽早进行化学驱;当油层较为均质,渗透率变异系数0.65、化学驱控制程度75%,含水率98%的条件下进行化学驱,仍能提高采收率20百分点以上;若油层非均质较强,渗透率变异系数0.75、化学驱控制程度75%条件下,则需在含水率95%以前进行化学驱才能提高采收率l8百分点以上。关键词:
3、三元复合驱;注入时机;开发效果中图分类号:TE357.46文献标识码:A文章编号:1000—3754(2015)05—0091-06INJECTIoNOPPORTUNITYOFASPFLOODINGINDAQINGOILFIELDCHENJinfeng,LIJie,ZHANGLijuan(1.No.2OilProductionPlantofDaqingOieldCo.Ltd.,Daqing163461,China;2.ExplorationandDevelopmeritResearchInstitute
4、ofDaqingOildCo.Ltd.,Daqing163712,China)Abstract:Withthehelpofthefollowingmethods:fieldstatistics,physicalandnumericalsimulations,theinflu—encesoftheinjectionopportunityontheeffectsoftheASPfloodingareresearched.Theresultsshowthatafterente—ringintothehighw
5、atercutperiodoftheoilfield,theearliertheinjectiontimingis,thebettereffectswillbe,forthechemicalfloodingengagedwhenthewatercutis86.0%一98.0%,theinitialwatercutdropsper1%,theoilrecov—eryisenhancedby0.3%一0.7%;themoreserioustheheterogeneityoftheoilreservoir,t
6、hebiggertheinfluenceoftheinjectionopportunityontheASPfloodingeffectswillbe,moreearlierchemicalfloodingshouldbeconducted;whilethefloodingengagedunderthefollowingconditions:thereservoirsareprettyhomogeneous,thepermeabilityvariationcoeficientis0.65,thechemi
7、calfloodingcontrolleddegreeisupto75%andmoreoverthewatercutrea-ches98%,therecoverycanstillbeenhancedbymorethan20%;onthecontrary,theheterogeneityisratherseri—OUS,thevariationcoeficientis0.75andthecontrolleddegreeisthesame,18%oraboveenhancedrecoveryoftheche
8、micalfloodingcanbeachievedonlybeforethewatercutis95%.Keywords:ASPflooding;injectiontiming/opportunity;recoveryeffect收稿日期:2015—04—01改回日期:2015—05—23基金项目:国家科技重大专项“大型油气田及煤层气开发”项目“大庆长垣特高含水油田特高采收率示范工程”(2011ZX05052)。作者简介:陈金凤,女,19
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