泡沫复合驱应用方案的模拟评价

在泡沫复合驱油矿场试验过程中,由于压缩机注入压力以及现有注采工艺技术的限制,导致泡沫复合驱实际应用方案与实验方案有很大差异。为了正确评价试验效果,本文对泡沫复合驱应用方案进行了室内模拟评价,认为气液比是影响驱替效果最为重要的因素。随着气液比的下降,最终采出程度是下降的,气液交替周期对泡沫复合驱的影响非常明显。同时还进行了不同渗透率油层泡沫复合驱效果、泡沫复合驱和普通的三元复合驱油效果对比评价,认为相比于普通的ASP复合驱,泡沫复合驱技术具有明显的优势。这一试验对今后泡沫复合驱技术的进一步发展具有意义。

Simulation Evaluation of the Application Project in ASP-Foam Flooding

During the ASP-Foam flooding pilot in Daqing oil field international first test,the gas was put into the systems of ASP(alkaline-surfactant-polymer), the restriction of injecting pressure of compressor and the injection-production process result in the difference between the application and the test project.Simulation Experiment was conducted in order to evaluate the test result exactly.It concluded: the different gas/liquid ratio was the most important factor.With the ratio went down,the oil recovery would decrease in the end.The period of gas alternate injection influenced the results of the ASP-Foam obviously.The contrast experiment of ASP-Foam flooding and normal ASP flooding was also conducted.It is suggested that displace efficiency of ASP-Foam flooding is more advantage in the simulation tests.