Effect of polymer solution structure on displacement efficiency

查看全文 作　　者：Shi [1]Leiting;Chen [1]Lei;Ye [1]Zhongbin;Zhou [2]Wei;Zhang [2]Jian;Yang [1]Jie;Jin [3]Jianbo

机构地区：[1]State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu,Sichuan 610500,China;[2]Research Center of CNOOC,Beijing 100027,China;[3]First Oil Production Plant of Henan Branch Corporation of Sinopec,Nanyang,Henan 474780,China

出　　处：《Petroleum Science》索引2012年第9卷第2期,共6页

基　　金：supported by the National Science and Technology Major Project (2011ZX05024-004);National High Technology Research and Development Program of China (863 Program: 2007AA090701-3) 摘　　要：In this paper, a series of experiments, including atomic force microscope (AFM), environmental scanning electron microscope (ESEM), and core displacement tests were conducted to investigate the effect of polymer solution structure on solution properties and oil displacement efficiency. The results show that in the HPAM solution polymer coils were formed and then aggregated into a loose structure, while the HAP2010 solution formed a strong network structure, which would significantly improve the solution viscosity and flow resistance so as to upgrade the capacity of piston-like oil displacement in highly permeable porous media. Meanwhile, the retention of the HAP2010 solution at pore throats were also enhanced, which could reduce water production during subsequent water flooding and enlarge the swept volume during polymer flooding. Therefore, enhancing the interaction among polymer molecules is an effective way to improve the displacement efficiency of polymer solutions in heavy oil reservoirs with high permeability. 关键词：溶液结构聚合物驱驱油效率环境扫描电子显微镜原子力显微镜高渗透性后续水驱聚合物溶液

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Effect of polymer solution structure on displacement efficiency

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