CO_(2)驱油藏工程技术研究进展及展望  

Research progress and prospect of reservoir engineering for CO_(2) flooding

作　　者：计秉玉[1] 王锐[1] 何应付[1] 刘昀枫 周元龙 王鹏 杨书 JI Bingyu;WANG Rui;HE Yingfu;LIU Yunfeng;ZHOU Yuanlong;WANG Peng;YANG Shu(Petroleum Exploration and Production Research Institute SINOPEC,Beijing 102206,China)

机构地区：[1]中国石化石油勘探开发研究院,北京102206

出　　处：《世界石油工业》2025年第1期87-99,共13页World Petroleum Industry

基　　金：国家重点研发政府间国际科技创新项目“生物质CCS潜力与示范可行性”(2022YFE0115800)。

摘　　要：CO_(2)驱提高采收率技术能够实现增油和减排,是国内外油藏工程师关注的热点。围绕CO_(2)驱油藏工程方法,首先系统剖析了CO_(2)混相驱、非混相驱、近混相驱等驱油机理研究进展,提出了基于热力学与动力学耦合的非完全混相驱理论,认识到CO_(2)驱注采井间混相是随着时空变化的动态过程。分析了CO_(2)驱物理模拟和数值模拟的发展现状与趋势,指出物理模拟技术从传统的基础参数测试,向着揭示物理化学本质和模拟油藏原位条件发展;数值模拟技术考虑更多的油藏特殊作用机理,向着渗流场-应力场-地球化学场多场耦合方向发展;微观数值模拟对于揭示致密页岩油气注CO_(2)提高采收率机理起到关键作用。进一步分析了CO_(2)驱层系井网、注采方式等开发技术策略,指出因地制宜、适时调整、全过程防窜封存和数值模拟跟踪是实现CO_(2)驱有效开发的保障。未来,CO_(2)驱技术将进一步围绕提高驱油效率、扩大波及系数两大方向进行攻关,强化在页岩油气、天然气、煤层气、天然气水合物、地热等领域的应用以提高能源采收率。CO_(2)驱技术将在驱油的同时兼顾埋存,与大数据及人工智能等信息化技术深度融合,有效改善CO_(2)驱油封存效果,为CO_(2)地质利用与封存技术规模化应用提供有力支撑。CO_(2)flooding can achieve both oil production increase and CO_(2)emission reduction,which has been a focal point of interest for worldwide reservoir engineers.Focusing on CO_(2)flooding reservoir engineering methods,the mechanisms of CO_(2)miscible flooding,immiscible flooding,and near-miscible flooding were analyzed systematically and a theory of non-complete miscible flooding based on the coupling of thermodynamics and kinetics was firstly proposed.It is recognized that the miscibility extent between CO_(2)injectors and producers is a dynamic process that changes with the time and the space.Secondly,the current status and trends of physical simulation and numerical simulation were illustrated.it is indicated that CO_(2)flooding physical simulation technology is evolving from the traditional basic parameter testing towards the revealing the physical and chemical essence and simulating in-situ reservoir conditions.The numerical simulation technology,on the other hand,is focused on more special mechanisms of the reservoirs.And multi-field coupled numerical simulation is the hot topic to integrate the seepage field,the stress field,and the geochemical field.Micro-scale numerical simulation also plays a key role in revealing the mechanism of improving the recovery efficiency of tight or shale oil and gas by CO_(2)injection.Furthermore,the layer system and well patterns,the injection and production methods,and other development technical policies were summarized.It is proposed to adapt local conditions,timely adjustment,and whole-process anti-channeling and numerical simulation tracking in CO_(2)flooding.Moreover,CO_(2)flooding technology will further focus on improving oil displacement efficiency and enlarging sweep efficiency.And CO_(2)flooding technology will be deeply integrated with informative technologies such as big data and artificial intelligence,improving the effect of CO_(2)flooding and storage.Technologies for improving energy recovery by CO_(2)flooding in shale oil and gas, natural gas, coalbed methane

关 键 词：CO_(2)驱油机理 物理模拟 数值模拟 分子模拟 开发策略 提高能源采收率 

分 类 号：TE357.45[石油与天然气工程—油气田开发工程]