CO_(2)驱油藏工程研究进展及展望  

Research progress and prospects of reservoir engineering by CO_(2) flooding

作　　者：张传宝 李宗阳 张东 王传飞[1] 郭祥 韩文成 ZHANG Chuanbao;LI Zongyang;ZHANG Dong;WANG Chuanfei;GUO Xiang;HAN Wencheng(Exploration and Development Research Institute,Shengli Oilfield Company,SINOPEC,Dongying City,Shandong Province,257015,China)

机构地区：[1]中国石化胜利油田分公司勘探开发研究院,山东东营257015

出　　处：《油气地质与采收率》2024年第5期142-152,共11页Petroleum Geology and Recovery Efficiency

基　　金：国家重点研发计划项目“区域二氧化碳捕集与封存关键技术研发与示范”(2022YFE0206800)。

摘　　要：CO_(2)捕集、利用与封存(CCUS)可实现碳减排和石油增产双赢,是化石能源行业绿色低碳转型的关键技术。2020年9月中国提出“力争2030年前实现碳达峰、2060年前实现碳中和”双碳目标后,石油石化行业加快推动CCUS技术规模化应用。在中国石化胜利油田、中国石油吉林油田等矿场实践中,逐渐暴露出CO_(2)驱存在波及程度低、见效时间短、气油比上升过快等矛盾,需要进一步加强油藏工程优化设计。在系统分析中外砂岩油藏CO_(2)驱提高采收率矿场实践的基础上,结合胜利油田百万吨级CCUS示范工程研究成果,针对油藏工程优化设计中的油藏压力保持水平与混相压力的匹配、井网方向与地应力方向的匹配、井距与储层渗透率的匹配以及气水交替驱替方式优化等重点问题,总结CO_(2)驱油藏压力保持水平、井网、井距、气水交替驱等油藏工程研究最新进展,重点对高压混相驱的提压方式、井网、井距以及气水交替驱优化设计等进行了分析,并指出CO_(2)驱油藏工程设计的攻关方向应围绕高压条件下多孔介质中原油、CO_(2)、水的相态规律及渗流规律、CO_(2)驱油与封存协同作用机制以及复杂储层条件下CO_(2)驱气窜机制等方向开展相关研究,为中国大规模CO_(2)驱提供技术支撑。CO_(2) capture,utilization,and storage(CCUS)can achieve a win-win situation of carbon emission reduction and oil pro-duction increase,and it is a key technology for the green and low-carbon transformation of the fossil energy industry.The petroleum and petrochemical industries have accelerated the large-scale application of CCUS technology after China proposed the goals of“peaking carbon emissions before 2030 and achieving carbon neutrality before 2060”in September 2020.It has gradually been re-vealed that CO_(2) flooding has contradictions such as a low impact,short effective time,and rapid increase in the gas-oil ratio in the field practices of SINOPEC Shengli Oilfield and CNPC Jilin Oilfield.It is necessary to strengthen the optimization design of reser-voir engineering further.This article systematically analyzed field practices of CO_(2) flooding to enhance oil recovery in sandstone res-ervoirs in China and abroad and key issues in the optimization design of reservoir engineering,such as the matching between reser-voir pressure maintenance level and miscible pressure,between well pattern direction and formation stress direction,between well spacing and reservoir permeability,and optimization of gas-water alternative displacement methods combined with the research re-sults of the million-ton CCUS demonstration project in Shengli Oilfield.Then,the article summarized the latest progress in reser-voir engineering research,such as reservoir pressure maintenance level during CO_(2) flooding,well network,well spacing,and gas-water alternative displacement,and analyzed the increasing pressure method,well pattern,well spacing,and gas-water alternative displacement optimization design for high-pressure miscible flooding.Finally,it indicated that the research direction of CO_(2) flood-ing reservoir engineering design should focus on the phase and flow laws of crude oil,CO_(2),and water in porous media under high-pressure conditions,the synergistic mechanism of CO_(2) flooding and storage,and the gas channeling mech

关 键 词：CCUS CO_(2)驱 油藏工程 优化设计 发展方向 

分 类 号：TE357.45[石油与天然气工程—油气田开发工程]