CO2在原油及高矿化度地层水体系中的溶解试验  

Solubility of CO2 in Crude Oil and High Salinity Formation Water System

作　　者：赵瑞明 张晓宇 王娜 王丹 崔茂蕾[2] Ruiming Zhao;Xiaoyu Zhang;Na Wang;Dan Wang;Maolei Cui(Research Institute of Exploration and Produciton,Northwest Oilfield Company,SIN0PEC,Urumqi Xinjiang;Research Institute of Petroleum Exploration and Development,SINOPEC,Beijing)

机构地区：[1]中石化西北油田分公司勘探开发研究院,新疆乌鲁木齐 [2]中石化石油勘探开发研究院,北京

出　　处：《石油天然气学报》2018年第4期36-40,共5页Journal of Oil and Gas Technology

摘　　要：在开展深层高矿化度下强边底水油藏CO2驱油评价时，CO2原油溶解分配是一个关键参数。利用自行研制的髙温、高压CO2溶解度测定装置，在115°C、49.5 Pa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。试验结果表明：地层水溶解C02气体量为28.6 m3/m3,复配原油溶CO2能力为150m3/m3,在油水体积比1:1条件下，注入的CO2在油水中的分配系数为10.1。The dissolution and distribution of C〇2-crude oil was a key parameter in the evaluation of C〇2 flooding in a strong and bottom water reservoir with deep and high salinity.The solubility of CO2 in the presence of high salinity formation water,crude oil and unsaturated oil-water system was tested at 115°C and 49.5 MPa by using a self-developed high temperature and high pressure CO2 solubility measurement device.The experimental results show that the formation water dissolved C〇2gas amount is 28.6 m3/m3,and the ability of CO2 to dissolve the compound crude oil is about 150 m3/m3.Under the condition of the oil/water volume ratio of 1:1,the partition coefficient of the injected CO2 in the oil and water is about 10.1.

关 键 词：CO2溶解度 高温 高压 高矿化度 

分 类 号：TE122.22[石油与天然气工程—油气勘探]