碳酸水驱强化采油技术研究进展  

An advance on enhanced oil recovery by carbonated water injection

作　　者：常云升 杨文哲[1] 董凡琦 杨泽濠 刘斌[1] 王志国[2] 张保良 CHANG Yun-sheng;YANG Wen-zhe;DONG Fan-qi;YANG Ze-hao;LIU Bin;WANG Zhi-guo;ZHANG Bao-liang(Tianjin Key Laboratory of Refrigeration Technology,School of Mechanical Engineering,Tianjin University of Commerce,Tianjin 300134,China;School of Civil Engineering,Northeast Petroleum University,Daqing 163318,China;Tianjin Branch China Shipping Petroleum(China)Co.,Ltd.,Tianjin 300452,China)

机构地区：[1]天津商业大学机械工程学院天津市制冷技术重点实验室,天津300134 [2]东北石油大学土木建筑工程学院,黑龙江大庆163318 [3]中海石油(中国)有限公司天津分公司,天津300452

出　　处：《应用化工》2022年第1期199-205,共7页Applied Chemical Industry

基　　金：国家自然科学基金青年项目(51706154);天津市自然科学基金青年资助项目(18JCQNJC77300)。

摘　　要：探究了CO_(2)对原油和水物性的影响,并在岩心和孔隙尺度实验中分析了CWI技术的驱替机理,以及操作参数的影响。CO_(2)通过从水相向油相进行传质,使油溶胀导致油滴相互连接提高波及效率,以及改善原油物性如降低油相粘度、水油界面张力和改变润湿性等作用提高采收率。压力、温度、注入速率通过影响CO_(2)在两相中的浓度以及传质速率来影响CWI的采收率,并在实验中发现驱替结束后降低压力和驱替含有溶解气的活油能够增加额外的采收率。CWI技术对CO_(2)的封存有很大的潜力,能将40%~50%的注入CO_(2)储存在油藏中。This paper explores the influence of CO_(2) on the physical properties of crude oil and water,and analyzes the displacement mechanism of CWI technology and the influence of operating parameters in the core and the pore scale experiments.CO_(2) by mass transfer from water phase to oil phase makes oil swelling and leads oil droplets to connect with each other to improve sweep efficiency,and improves crude oil physical properties such as reducing viscosity,water-oil interface tension and changing wettability to improve oil recovery.Pressure,temperature and injection rate affect the recovery of CWI by affecting the concentration of CO_(2) in two phases and the mass transfer rate.It is found that reducing pressure after displacement and displacing active oil containing dissolved gas can increase extra recovery.CWI technology has great potential for CO_(2) storage and can store 40%~50%of injected CO_(2) in reservoirs.

关 键 词：碳酸水注入法 强化采油技术 驱替机制 CO_(2)储存 

分 类 号：TQ-9[化学工程] TE357[石油与天然气工程—油气田开发工程]