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时间:2020-01-13
《二元复合驱波及系数和驱油效率对采收率的影响.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2月大庆石油地质与开发Feb.,2015第34卷第1期PetroleumGeologyandOilfieldDevelopmentinDaqingVo1.34No.1DOI:10.3969/J.ISSN.1000—3754.2015.叭.020二元复合驱波及系数和驱油效率对采收率的影响肖传敏张艳芳(辽河油田公司勘探开发研究院,辽宁盘锦124010)摘要:无碱二元复合驱是今后化学驱发展的主要方向。为认清二元复合驱提高采收率机理,通过室内三维物理模拟实验,研究了二元复合驱过程中非均质油藏波及系数与驱油效率的变化特征,并量化其对提高采收率的贡献程度。实验结果表明:
2、在有隔层的条件下,中渗透层提高采收率幅度最高,低渗透层次之,高渗透层最低;二元驱高渗透层以提高驱油效率为主,低渗透层以提高波及系数为主,中渗透层同等提高波及系数和驱油效率;初步得出驱油效率对最终提高采收率的贡献率为40%,扩大波及系数的贡献率为60%,可有效指导二元驱配方组合设计思路。关键词:二元复合驱;波及系数;驱油效率;物理模拟;贡献率中图分类号:TE357.462文献标识码:A文章编号:1000-3754(2015l01-0098—04INFLUENCESoFTHESWEPTCoEFFICIENTANDoILDISPLACEDEFFICIENCYoNEoRFoR
3、THEBINARYCoMBINEDFLooDINGXIAOChuanmin,ZHANGYanfang(Exploration&DevelopmentResearchInstituteofLiaoheOilfieldBranchCompany,Panjin124010,China)Abstract:Non—alkalibinarycombinedfloodingisthemaindevelopmentdirectionofchemicalfloodingfromnowon.Inordertomakeclearofthemechanismofthebinaryfloodi
4、ng,thedynamiccharacteristicsofthesweptcoefi—eientandoildisplacedeficiencyisstudiedthrough3Dphysicalsimulatingtest,andmoreoverthecontributionratetoenhanceoilrecoveryisalsoquantified.Theexperimentalresultsshowthatintheconditionofthebarriers,theEORcontributionforthemedium—permeabilityoilre
5、servoirsisthehighest,thenextisthelow—permeabilityreser-voirs,butthatofthehigh-permeabilityonesisthelowest;theactionofthebinaryfloodingforthehigh-permeabilityreservoirsisdominantlyimprovingtheoildisplacedeficiency,onthecontrary,forthelow—permeablereservoirs,toenhancethesweptcoeficientisk
6、ey,andforthemedium—permeabilityreservoirs,thetwoco—actionsoftheaboveisarerealivedatthesametime;thecontributionrateoftheobtainedefficiencytoenhancetheultimateoilrecoveryis40%,andthatofthesweptcoeficientis60%.AUtheachievementscanguidethedesignthoughtoftheformulacombinationofthebinarycompl
7、exflooding.Keywords:binarycombined/complex/compoundflooding;sweptcoeficient;oildisplacedeficiency;physical收稿日期2013—11—08改回日期:2014—02—17基金项目中国石油股份公司重大科技专项“辽河油田原油千万吨持续稳产关键技术研究”中“水驱砂岩油藏提高采收率关键技术研究与应用”专项研究部分成果(2012E一3004)。作者简介肖传敏,男,1978年生,高级工程师,硕士,从事化学驱提高采收率研究工作。E—mail:xiaochm18@pe
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