高含水期油藏三次采油物理模拟评价(英文)  

Physical Analog Evaluation of Tertiary Recovery in High Water Cut Stage Reservoir

作　　者：曹仁义[1] 

机构地区：[1]中国石油大学石油天然气工程学院,北京102249

出　　处：《科学技术与工程》2008年第16期4646-4649,共4页Science Technology and Engineering

基　　金：国家973基础研究计划(2005CB22130004)资助

摘　　要：针对高含水期油藏三次采油评价困难的问题,在室内岩心驱替实验物理模拟高含水期油藏后期聚驱和复合驱驱油过程基础上,对聚合物驱不同段塞大小、不同段塞浓度的聚驱效果进行了模拟评价,得出:随聚合物注入PV数的增加,聚合物驱油效率增大,但增大幅度逐渐变小;随注入聚合物浓度的增加,聚合物驱油效率逐渐增大,其增大幅度逐渐变小。在此基础上,对辽河油田SH高含水油藏进行了聚合物驱和复合驱可行性评价,对比和分析了聚合物驱、聚合物-表活剂驱、聚合物-碱驱以及聚合物-表活剂-碱驱驱油效果,认为聚合物驱为该油藏最优的开发调整方式。In view of the difficulty of tertiary recovery evaluation in high water cut stage reservoir,the polymer and combination flooding of high water cut stage reservoir are simulated by physical analog in core,and the displacement efficiency by polymer slug of different PV number and concentration are evaluated.The result shows that the displacement efficiency increases with the increase in PV number and concentration of polymer slug,but the incremental value of displacement efficiency decreases with the increase in PV number and concentration of polymer slug.It is evaluated that the feasibility of polymer flooding and combination flooding in SH high water cut reservoir of Liaohe oilfield,and the displacement efficiency by polymer flooding,polymer-surfactant flooding,polymer-alkali flooding and polymer-surfactant-alkali flooding are compared and analyzed,and the results show that the polymer flooding is the best development mode of enhance oil recovery method to SH high water cut reservoir of Liaohe oilfield.

关 键 词：三次采油 聚合物驱 高含水油藏 物理模拟 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]