弱碱ASP体系驱油效果实验研究

Experimental study of weak base ASP flooding effect

针对矿场实际需求,在室内实验基础上,研究了弱碱三元复合体系在相同黏度不同界面张力,以及相同界面张力不同黏度条件下的性质;探讨了油层非均质性对该体系的影响及其在多孔介质中的滞留量。分析了该体系与采收率提高幅度之间的规律,并对其作用机理做了深入研究,为三元复合驱技术的广泛合理应用提供了一定的理论基础。

On the basis of laboratory experiments, this paper studies the property of weak alkali/surfactant/polymer (ASP) system according to field requirement under the conditions of same viscosity and different interfacial tension as well as same interfacial tension and different viscosities, discusses the impact of reservoir heterogeneity on the system and the retention volume of the system in porous media. The relationship between ASP system and the degree of recovery factor improvement is analyzed, and the mechanism of the system is intensively studied, thus providing certain theoretical basis for extensive and reasonable application of ASP flooding technology.