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大庆油田杏二区三元复合驱采出液化学组成分析表明 ,矿场试验中、后期采出液内含有较高浓度的聚合物和其它一些注入化学成分。通过在人造和天然岩心上对采出液及其与普通三元体系以不同注入方式组合的流动特性进行实验研究 ,结果表明 :只要采出液中所含聚合物浓度较高 ,其通过岩心后可以获得较高的阻力系数和残余阻力系数。而且使用采出液作为前置液时还可以提高普通三元体系的阻力系数和残余阻力系数。
The chemical composition analysis of the recovery fluid of ASP flooding in Xing’er District of Daqing Oilfield shows that in the field test, the late recovery fluid contains a higher concentration of polymer and some other injected chemical components. The experimental study on the flow characteristics of the produced fluid and its combination with ordinary ternary system by different injection methods on artificial and natural cores shows that as long as the polymer contained in the produced fluid has high concentration, Obtain higher resistance coefficient and residual resistance coefficient. And the use of production fluid as a pre-fluid can also improve the general ternary system resistance coefficient and residual resistance coefficient.