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Laboratory study of an anti-temperature and salt-resistance surfactant-polymer binary combinational flooding as EOR chemical

Authors

  • Nanjun Lai,

    1. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, People's Republic of China
    2. State Key Lab of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, People's Republic of China
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  • Xue Zhang,

    Corresponding author
    1. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, People's Republic of China
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  • Zhongbin Ye,

    1. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, People's Republic of China
    2. State Key Lab of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, People's Republic of China
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  • Xi Li,

    1. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, People's Republic of China
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  • Zhihao Li,

    1. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, People's Republic of China
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  • Yiping Wen,

    1. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, People's Republic of China
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  • Yan Zhang

    1. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, People's Republic of China
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ABSTRACT

Experimental studies were conducted to enhance the oil recovery by a surfactant-polymer binary combinational flooding system. The surfactant-polymer binary combinational flooding was obtained by mixing the surfactants with the poly(AM-NVP-AS)-1 which was an anti-temperature and salt-resistance tercopolymer and successfully synthesized via free radical polymerization using acrylamide (AM), N-vinyl pyrrolidone (NVP), allyl sulfonate (AS) as raw materials. The initiator was redox system including water-soluble azo compound (AIBA·2HCl) and sodium bisulfite (NaHSO3). Petroleum carboxylate dodecyl dibasic carbonylic acid sodium (C12DAS) and carboxyl betaine dodecyl dimethyl betaine (C12DB) were selected in this article. Compared with the surfactant-HPAM, the surfactant-poly(AM-NVP-AS)-1 binary combinational system showed higher apparent viscosity and lower interfacial tension at high temperature and salinity conditions as the result of a better capacity of anti-temperature, salt-resistance, and swept volume. The recovery could enhance over 17% based on the core flooding test under the mineralization of 10,000 mg/L at 65°C. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2014, 131, 39984.

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