赵明国
Zhao Mingguo(Petroleum Engineering Department of Daqing Petroleum Institute;

• 1:大庆石油学院石油工程系!黑龙江安达151400

摘要(Abstract)：

通过室内模拟实验 ,研究了在三元复合驱中大庆油田岩石润湿性的变化规律 ,分析了润湿性的变化机理。结果表明 ,三元复合驱后 ,岩石润湿性发生变化 ,总的趋势是岩石润湿性向亲水方向转化 ,其转化幅度与三元复合体系中化学剂浓度有关。三元复合驱中岩石润湿性的变化主要是因为化学剂与地层中二价阳离子、岩石矿物相互作用 ,改变岩石的表面性质以及碱对吸附在岩石表面的刚性油膜的溶解 ,使各相之间的界面张力发生变化。
This paper studies the rule of rock wettability change of Daqing Oil Field in ASP flooding and analyzes the mechanism of wettability change through lab simulation test. The result shows that the rock wettability changes after ASP flooding with a trend to water wettability. The transforming magnitude relates to the chemical concentration in the ASP system. The rock wettability changes because the chemical interacts with the divalent cations and rock mineral in the formation, changes the surface property of rock and the solution of alkali to the rigid oil film adsorbed on the surface of rock, and changes the interfacial tension among various phases.

关键词(KeyWords)： 大庆油田;三元复合驱;三元复合体系;岩石润湿性;实验研究
Daqing Oil Field; ASP flooding; ASP system; rock wettability; experimental study

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作者(Authors): 赵明国
Zhao Mingguo(Petroleum Engineering Department of Daqing Petroleum Institute;

参考文献(References)：

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• [2 ]杨承志 ,等 化学驱油理论与实践 [M] 北京 :石油工业出版社 ,1 996:55 56
• [3 ]杨普华 ,杨承志 化学驱提高石油采收率 [M] 北京 :石油工业出版社 ,1 988:3 1 4 3 2 4