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 further understand the mechanism of CO2 huff and puff and its effect on oil recovery, a numerical model was set up for CO2 huff and puff in one of the wells according to the geological conditions and development status of a block. On the basis of this, the development indexes were calculated and the influence of five sensitive factors (cycle injection, bottom hole flow pressure, injection speed, time and viscosity) on the throughput was analyzed, and the parameter range .