摘要
针对地层条件下粘度为 10 0mPa·s的稠油 ,采用室内实验方法研究了稠油注CO2 的注入方式 ,包括CO2吞吐、CO2 吞吐转CO2 驱转水驱、CO2 吞吐转水驱、CO2 驱、水驱CO2 段塞、CO2 水交替注入等 ,并对各种注入方式的驱油效率进行了比较。结果表明 ,在实验条件下 ,CO2 水交替注入和CO2 吞吐转水驱的方式驱油效率最高 ,稠油CO2 吞吐然后转为水驱的方式是可行的。该研究可为现场选择合理的注入方式提供技术参数。
Some experiments on seven schemes of CO 2 injection are conducted using heavy oil with 100 mPa·s viscosity to evaluate the effect for enhancing oil recovery with CO 2 in heavy oil reservoir under reservoir condition. The schemes include CO 2 huff n puff, CO 2 huff n puff followed by CO 2 and water drive, CO 2 huff n puff followed by water drive, water alternating CO 2 injection (WAG), water drive, CO 2 drive, displacement of CO 2 slug by water. It is found that WAG and huff n puff followed by water drive are the two best injection modes for heavy oil reservoir with viscocity of 100 mPa·s. It is concluded that CO 2 huff n puff followed by water drive is a potential engineering scheme for improving oil recovery.
出处
《石油大学学报（自然科学版）》
CSCD
北大核心
2001年第2期62-64,共3页
Journal of the University of Petroleum,China(Edition of Natural Science)
基金
中国石油天然气集团公司导向技术项目 (1998-1999)
关键词
稠油
注入方式
驱油效率
室内实验
二氧化碳吞吐
二氧化碳驱
heavy oil
injecting pattern
CO 2 huff\|n\|puff
CO 2 drived
displacement efficiency
laboratory experiment
