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《大庆油田二类油层交联聚合物微球调剖剂性能.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、2013年8月大庆石油地质与开发Aug.,2013第32卷第4期PetroleumGeologyandOilfieldDevelopmentinDaqingV01.32No.4DOI:10.3969/J.ISSN.1000—3754.2013.04.024大庆油田二类油层交联聚合物微球调剖剂性能高思远(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:为研究交联聚合物微球在大庆油田二类油层的适应性,利用扫描电镜和微孔滤膜实验研究了交联聚合物微球的颗粒微观形态和封堵性能,通过岩心流动和驱
2、油实验评价了交联聚合物在天然岩心中的流动性能及驱油效果。结果表明:交联聚合物微球在水溶液中可形成较为规整的球形颗粒,且多数微球粒子尺寸小于1.0Ixm;交联聚合物微球的封堵性能明显好于“中分”聚合物溶液,交联聚合物微球水化2~3d,其封堵性能最佳;无机盐使交联聚合物微球的封堵性能降低;交联聚合物微球可以进入孔道内部并封堵,能有效提高注入水的波及体积,降低非均质性,提高原油采收率。关键词:交联聚合物微球;微孑L滤膜;扫描电镜;天然岩心;二类油层;大庆油田中图分类号:TE357.46文献标识码:A文章编号
3、:1000—3754(2013)04-0112-05PRoFILE.CoNTRoLLINGPERFoRMANCESOFTHECRoSSLINKEDPoLYMERMICRoSPHEREINTHESUB-LAYERSoFDAQINGOILFIELDGA0Siyuan(ExplorationandDevelopmentResearchInstituteofDaqingOilfieldCompanyLtd.,Daqing163712,China)Abstract:Toresearchtheadaptabili
4、tyofthecrosslinkedpolymermicrosphereinthesub—layersofDaqingOilfield,withthehelpofscanningelectronmicroscopeandmicroporousfilteringmembraneexperiment,themicroscopicmor—photypesoftheparticlesandpluggingperformancesforthecrosslinkedpolymermicrospheresarest
5、udied.Theflowpropertiesandoildisplacingperformancesofthemicrospheresareevaluatedbymeansofthenaturalcoreflowingandoil-displacingexperiments.Theexperimentalresultsshowthatcrosslinkedpolymermicrospherecanformuni—formsphericalparticlesinthewatersolution,and
6、thesizeofmostmierosphereparticlesislessthan1.0m;thepluggingperformancesofthecrosslinkedpolymermicrospherearemuchbetterthanthoseofthepolymersolutionwithmediummoleculeweight,whenhydratingfor2—3days,thepluggingperformancesareoptimal;thepluggingperformances
7、ofthecrosslinkedpolymermicrospherearereducedbytheinorganicsalt;thecrosslinkedpolymermi—crospherecanbepenetratedintotheinnerpartsofthechannels,thusthesweptvolumeoftheinjectedwatercanbeeffectivelyimprovedandtheheterogeneitycanbereducedaswell,finallytheoil
8、recoverycanbeenhanced.Keywords:crosslinkedpolymermicrosphere;microporousfiltermembrane;scanningelectronmicroscope;natu一收稿日期:2013-04-28改回日期:2013-06-02基金项目:国家科技重大专项“大庆长垣特高含水油田提高采收率示范工程”(2011ZX5052)和“聚合物后进一步提高采收率新技术”(2011ZX05010-005
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