针对太 190区块的实际情况 ,开展了CO2 在原油中的溶解—膨胀实验研究并对CO2 单井吞吐进行了数值模拟计算 ,研究了注入量、注入速度、井底流压、浸泡期以及吞吐周期等因素对开采效果的影响 ,同时进行了经济效益分析。研究结果表明 ,葡一组油层原油具有较强的CO2 溶解能力 ,在 2 3MPa的压力下 ,CO2 的溶解量为 2 10m3 ,CO2 在原油中溶解后可使地层油的体积膨胀 4 1 2 %。CO2 吞吐是一种改善低渗透油田开发效果的经济且有效的方法 According to the actual situation of too 190 block, the experiment of CO2 dissolution and expansion in crude oil was carried out and the numerical simulation of CO2 single well huff and puff was carried out. The effects of injection rate, injection velocity, bottomhole flow pressure, immersion period and throughput period And other factors on the mining effect, at the same time the economic benefit analysis. The results show that the crude oil from a group of reservoirs in Portugal has a strong capability of dissolving CO2. Under the pressure of 23 MPa, the dissolved CO2 is 210 m3. After being dissolved in crude oil, CO2 can expand the volume of formation oil by 42.2%. CO2 huff and puff is an economical and effective way to improve the development of low-permeability oilfield