新疆油田CO_2驱提高原油采收率与地质埋存潜力评价  

Potential evaluation of CO_2 flooding enhanced oil recovery and geological sequestration in Xinjiang oilfield

作　　者：王欢[1] 廖新维[1] 赵晓亮[1] 刘姣姣[1] 李小锋[2] 

机构地区：[1]中国石油大学(北京)石油工程教育部重点实验室,北京昌平102249 [2]中国石油长庆油田分公司苏里格气田研究中心,陕西西安710018

出　　处：《陕西科技大学学报（自然科学版）》2013年第2期74-79,共6页Journal of Shaanxi University of Science & Technology

基　　金：国家973基础研究计划项目(2011CB707302)

摘　　要：CO2驱油与埋存技术既可以大幅提高原油采收率,又可以有效降低温室气体排放,在世界范围内已得到广泛重视,我国近些年来已开展了深入研究并取得了很大进展.基于分流理论,提出一套CO2驱提高原油采收率与埋存潜力评价方法,并针对新疆油田进行了CO2驱提高原油采收率和地质埋存潜力评价.评价结果显示:水驱后转CO2气驱比连续水驱原油采收率有较大幅度的提高,并且CO2混相驱比非混相驱的采收率和地质埋存潜力大.评价结果表明CO2驱在新疆油田具有较好的应用前景.本研究提出了一种可靠、快捷的CO2提高采收率与埋存潜力评价方法及步骤,将可为全国范围内进一步开展潜力评价提供可靠的方法和技术手段.The technology of CO2 flooding and geological sequestration has been paid more at- tention around the world,which can enhance oil recovery significantly, meanwhile,to control greenhouse gases emissions effectively. In recent years, China has conducted in-depth study and made a great progress. In this paper, we have developed a software for CO2 flooding en- hanced oil recovery and sequestration potential evaluation based on the fractional flow theo- ry. Aiming to Xinjiang oilfields,the potential of CO2 flooding enhanced oil recovery and geo- logical sequestration were evaluated. The results show that CO2 flooding after water flooding have a higher oil recovery than continuous water flooding, and the CO2 miscible flooding have more potential of oil recovery and CO2 geological sequestration than the immiscible flooding. The evaluation results show that CO2 flooding has good application prospects in Xinjiang oil- fields. We provide the reliable, efficient methods and procedures for CO2 enhanced oil recov-ery and sequestration potential evaluation in this paper,which will provide a reliable evalua- tion method and technological means to the country＇s further potential evaluation.

关 键 词：二氧化碳驱 分流理论 提高采收率 地质埋存 潜力评价 

分 类 号：TE341[石油与天然气工程—油气田开发工程]