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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,这为采出液的利用奠定了物质基础。在人造物理模型上对采出液及其复配体系不同注入方式组合驱油效果的实验研究表明,单独使用采出液驱可以在水驱基础上提高采收率160%,用其复配三元体系可以提高236%,用其作为复配体系的保护段塞可以提高315%,该数值与清水配制三元体系基本相当。上述实验结果为三元复合驱采出液的利用提供了3种途径,具有十分重要的现实意义。
The chemical composition analysis of the recovered liquid from the ASP flooding in Xing’er district of Daqing Oilfield shows that in the field test, the late-stage recovery liquid contains a higher concentration of polymer and some other injected chemical components, which has laid the foundation for the utilization of recovery fluid Material basis. The experimental study on the effect of combined flooding on different production methods of injection fluid and its compounding system on artificial physical model shows that the recovery rate of 160% With ternary system can improve 23 6%, with its use as a protective system of the slug can be increased 31 5%, the value of prepared ternary system with water basically the same. The above experimental results provide three ways for the utilization of ASP flooding production fluid, which has very important practical significance.