高浓度三元复合体系增油效果及其作用机理.pdfVIP

2013年 12月 大庆石油地质与开发 Dec．，2013 第 32卷第 6期 Petroleum GeologyandOilfieldDevelopmentinDaqing V01．32No．6 DOI：10．3969／J．ISSN．1000—3754．2013．06．027 EoR EFFECTSAND M ECHANISM FoR HIGH-CoNCENTRATIoN ASP CoM PLEX SYSTEM HANGuangzhi，SUNGang，SUYancang，LUXiangguo，WANGRongjian (1．BakerHughesInc．，Denver80202，USA；2．ExplorationandDevelopmentResearchInstitute ofDaqingOilfieldCompanyLtd．，Daqing163712，China；3．No．6OilProductionPlant ofDaqingOilfieldCompanyLtd．，Daqing163114，China；4．MOEKey LaboratoryofEnhancedOilRecovery，SchoolofPetroleumEngineering， NortheastPetroleumUniversity，Daqing163318，China) Abstract：Inthelightofthecurrentrealitiesofinfluencingthesweptvolumeenlargementandincreasing thecostoftheoil--floodingagentsresultedfrom thelower--concentrationpolymerintheASPcomplexflood-· ing，withthehelpofoilreservoirengineeringtheories，physicalsimulationandtheanalyzingmethodsby theinstruments，theinfluencingfactorsoftheoilincrementaleffectsofthehigh—concentration—ASP—corn— plex—floodingslugsareanalyzed．Atthemeantime，thetechnicalandeconomiceffectsoftheconcentra- tionandamountofASPfloodingareinvestigated．Theresultsshow thatthelowertheinterfacialtension is，thehigherthedisplacementefficiencywillbe，sowilltheincrementaldegreeoftheoilrecovery；the biggertheviscosityand sizeoftheslugsare，thebettertheenlargedresultsofthesweptvolumewillbe， sowilltheEOR，butincrementaldifferencesaregraduallydecreased．Underthecondition ofthe same costofthechemicals，theEOR dergeewillbe greaterforthecombinationof “polymerpre—slug +ASP principal slug+ASP viceslug+polymerprotectingslug” ．From theviewpointsofthetechnicalande