高温高压下CO<sub>2</sub>在原油和高矿化度地层水中溶解度实验——以塔河油田某区三叠系油藏为例

高温高压下CO₂在原油和高矿化度地层水中溶解度实验——以塔河油田某区三叠系油藏为例

摘要: 利用自行研制的高温高压CO₂溶解度测定装置，在110 ℃、50 MPa条件下测试CO₂在高矿化度地层水、原油以及非饱和油水共存状态下的溶解度。实验结果表明：地层水溶解二氧化碳气体量为26.5 m³/m³，复配原油溶CO₂能力为134 m³/m³，在油水体积比为1∶1的条件下，注入的CO₂在油水中的分配系数为9.23。

Abstract: The solubility of CO₂ in the presence of high-salinity formation water, crude oil and unsaturated oil-water system was tested at 110℃ and 50 MPa by using a self-developed high temperature and high pressure CO₂ solubility measurement device. The experimental results showed that the formation water dissolved carbon dioxide gas amount of 26.5 m³/m³, and that of compound crude oil was about 134 m³/m³. When the oil/water volume ratio was 1:1, the partition coefficient of injected CO₂ in oil and water was about 9.23.