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《Petroleum Geology and Recovery Efficiency》 2010-01
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Influencing factors and prevention treatment of polymer channeling in polymer flooding

Cai Wenbin.Li Zhaomin.Xu Yuangang et al College of Petroleum Engineering,Xi an Shiyou University,Xi an City.Shanxi Province,710065,China  
Polymer flooding is one of the main chemical floods,because of long time waterflood development,the reservoirs and fluid fea-tures changed greatly.Polymer channeling often happened in the high permeability reservoirs during the polymer flooding,which resulted in low oil displacement efficiency.The polymer channeling rules under different permeability,polymer injection velocity and injection concentration were researched by microcosmic visualization experiments.The channeling prevention was studied from two aspects of gelatinous jam and treatments.The oilfield test shows that:the channeling prevention has prefera-ble adaptability.and it could improve polymer efficiency and enhance the polymer swept volume.Of a single well,the water cut dropped 5% and cumulative incremental oil is 426t.
【Fund】: 国家高技术研究发展“863”计划“海上油田活性聚合物乳液驱油体系研究与应用技术”(2006AA09Z322)
【CateGory Index】: TE357.4
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