三元复合驱油体系静态吸附规律研究

为了三元复合驱油体系静态吸附规律研究,通过物理模拟实验,分别使用单一组分的聚合物和单一组分的碱,碱和聚合物、表活剂和聚合物二元复合体系以及三元复合体系进行对比实验。研究结果表明:随着聚合物相对分子质量增大,其吸附能力增强,对表活剂的吸附影响也随之加大,表面活性剂的吸附量呈现先迅速增加,达到峰值后缓慢下降并趋于稳定的规律。碱和聚合物二元复合体系主要表现为聚合物的吸附和与大量碱发生水解反应。而在三元复合体系中,表活剂对聚合物的吸附量影响较小,聚合物与大量碱发生水解作用仍然起主导作用。

Study on the Static Adsorption Law of ASP Flooding System

In order to research the static adsorption law of ASP flooding system, by using physical simulation experiments, the flooding systems with single polymer, single alkali, the binary compound system of alkali and polymer or surfactant and polymer as well as the ASP system were compared. The results showed that, with the increase of the polymer molecular mass, its adsorption ability enhanced, the adsorption impact to surfactants also increased; the adsorption quantity of surfactants rapidly increased at the beginning, after the peak value, the adsorption quantity declined gradually and then tended to be stable. Alkali and polymer binary compound system mainly showed polymer adsorption and the hydrolysis reaction between polymer and a large amount of alkali. While, in the ASP system, the impact of surfactant on polymer adsorption quantity was small, the hydrolysis reaction between polymer and a large amount of alkali still played a key role.