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《Fault-Block Oil & Gas Field》 2011-02
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Experimental study on deep thermophilic and halotolerant profile control agents

Yang Wenjun1,2 Zhao Guang3 Liu Kui4 Zhao Hui3 Wang Ping3 Dai Caili3(1.Petroleum Engineering Institute of Southwest Petroleum University,Chengdu 610500,China;2.Oil and Gas Production Technology Department of Exploration & Production Company,PetroChina,Beijing 100011,China;3.State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Qingdao 266555,China;4.Shanghai Company,CNOOC, Shanghai 200030,China)  
Deep profile control agents which was thermophilic and halotolerant was prepared with nonionic polymers and phenolic resin.The gelling behavior of the deep profile control agents is aslo studied experimentally in this paper.The gelation time is qualitatively determined by the classification of gel strength and the gel strength is quantitatively measured by breakthrough vacuum method,and the contour diagrams of gelation time and gel strength are gained.The effect of polymer and the concentration,temperature,pH value,salinity and shear rate of crosslinking agent on gelling property is evaluated,implementing the performance evaluation of well plugging and inspecting the effect of injection timing on recovery ratio.The results show that the gelation time of crosslinking system is adjustable from 1 to 18 days and that the jellied profile control agents illustrate a high strength,thermophilic and halotolerant,widely applicable pH value,good shear resistance property and plugging capacity.As same amount of profile control agent is injected,the earlier injection timing is,the higher the incremental value of enhanced oil recovery is.
【Fund】: 山东省杰出青年基金项目“提高采收率与采油化学”(JQ201013)资助
【CateGory Index】: TE357.46
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