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Petroleum Science >2012,??Issue 2:??230-235 DOI: https://doi.org/10.1007/s12182-012-0203-z

Effect of polymer solution structure on displacement efficiency Open?Access

文章信息

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作者：Shi Leiting,Chen Lei,Ye Zhongbin,Zhou Wei,Zhang Jian,Yang Jie and Jin Jianbo
作者單位：

State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China;Research Center of CNOOC, Beijing 100027, China;Research Center of CNOOC, Beijing 100027, China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China;First Oil Production Plant of Henan Branch Corporation of Sinopec, Nanyang, Henan 474780, China

投稿時(shí)間：2011-09-16
引用方式：Shi, L., Chen, L., Ye, Z. et al. Pet. Sci. (2012) 9: 230. https://doi.org/10.1007/s12182-012-0203-z

文章摘要

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

關(guān)鍵詞

    Polymer, solution structure, loosely-aggregated structure, network structure, displacement efficiency