高温高压下CO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

Solubility of CO in crude oil and high-salinity formation water under high temperature and high pressure: Taking the Triassic reservoirs in a certain area of Tahe oilfield as an example

王丹 赵瑞明 崔茂蕾 张晓宇 王娜

Wang Dan Zhao Ruiming Cui Maolei Zhang Xiaoyu Wang Na

中国石化 西北油田分公司 勘探开发研究院, 乌鲁木齐 830011 2. 中国石油化工股份有限公司石油勘探开发研究院, 北京 100083

Research Institute of Exploration & Production, SINOPEC Northwest Company, Urumqi, Xinjiang 830011, China 2. SINOPEC Petroleum Exploration & Production Research Institute, Beijing 100083, China

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。

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.

https://doi.org/10.11781/sysydz2017S1040