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Experimental study on surface-active polymer flooding for enhanced oil recovery: A case study of Daqing placanticline oilfield, NE China
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YU Qiannan,LIU Yikun,LIANG Shuang,TAN Shuai,SUN Zhi,YU Yang
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Table 5 Experimental results of contribution rate of mobility control effect of surface-active polymer flooding for enhanced oil recovery.
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Water flooding
recovery/% | Viscosity/
(mPa·s) | Polymer flooding | Surface-active polymer flooding | Contribution rate of mobility control effect/% | | Recovery/% | Increase/% | Recovery/% | Increase/% | | 23.67 | 45 | 48.4 | 24.7 | 56.2 | 32.5 | 76.02 | | 100 | 48.8 | 25.1 | 56.5 | 32.8 | 76.55 | | 200 | 49.5 | 25.8 | 56.7 | 33.0 | 78.20 | | 300 | 50.4 | 26.7 | 57.1 | 33.4 | 79.96 | | 400 | 51.7 | 28.0 | 58.3 | 34.6 | 80.94 |
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