摘要
为了深入了解CO2 吞吐过程中的各种机理及其对提高采收率的影响 ,针对某一断块的地质条件和开发现状对其中一口井进行了CO2 吞吐试验 ,建立了数值模型。在此基础上对开发指标进行计算 ,分析了五个敏感因素 (周期注入量、井底流压、注入速度、焖井时间、粘度 )对吞吐效果的影响 ,并提出了现场实施应选取的参数范围。
In order to have knowledge of various mechanisms in the CO 2 stimulation process and their influence on EOR, a CO 2 stimulation experiment was carried out on a well according to the geologic condition and development present condition of some fault block. Based on the numerical model, development indexes are calculated and the influence of five sensitivity factors (including cyclic CO 2 injection volume, bottomhole producing pressure, injection rate, soak time and viscosity) on the effect of CO 2 stimulation is analyzed. And the appropriate parameter range selected in oil field application is presented at last.
关键词
提高采收率
CO2吞吐
数值模拟
开发指标
敏感因素
enhanced oil recovery
CO_(2)stimulation
numerical simulation
development indexes
sensitivity fact
