国内外稠油油藏CO_2吞吐提高采收率的应用现状  

Application of CO_2 Huff and Puff in Heavy Oil Reservoirs to Enhance Oil Recovery: Status in quo at Home and Abroad

作　　者：黄琴[1] 郭平[1] 张俊 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500 [2]中海油天津分公司,天津塘沽300452

出　　处：《承德石油高等专科学校学报》2008年第2期4-6,16,共4页Journal of Chengde Petroleum College

摘　　要：CO2吞吐工艺利用CO2注入原油,使原油黏度降低和体积膨胀的机理,可以降低地层渗流阻力、增加地层驱动能量,达到提高稠油油藏采收率的目的。实践证明,CO2吞吐工艺是一种单井提高原油采收率的有效方法。分析了CO2吞吐工艺的增产机理以及应用现状,提出了CO2吞吐工艺需要进一步研究的内容,对国内稠油油藏CO2吞吐工艺的推广应用具有指导意义。According to stimulation mechanisms of CO2 huff and puff, injecting CO2 into crude oil could reduce the oil viscosity and swell oil volume, increase formation driving force as well as decrease the formation resistance, so as to enhance the oil recovery. Results show that CO2 huff and puff is an effective method of enhancing oil recovery for single well. This paper discusses stimulation mechanisms and up-to-date status in quo of application, as well as future research contents of CO2 huff and puff. The results have an important benefit to the extensive application of CO2 huff and puff domestically.

关 键 词：CO2吞吐 稠油油藏 驱油机理 采收率 应用现状 

分 类 号：TE345[石油与天然气工程—油气田开发工程]