致密油藏提高采收率方法与理论研究进展  

Advances of Enhanced Oil Recovery Method and Theory in Tight Reservoirs

作　　者：魏兵[1] 刘江 张翔 蒲万芬[1] WEI Bing;LIU Jiang;ZHANG Xiang;PU Wanfen(State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu,Sichuan 610500,China)

机构地区：[1]油气藏地质及开发工程国家重点实验室·西南石油大学,四川成都610500

出　　处：《西南石油大学学报（自然科学版）》2021年第1期91-102,共12页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家自然科学基金(51974265,51804264)。

摘　　要：全面梳理了近十年来国内外有关致密油藏提高采收率方法的研究进展,提升总结了理论层面认识,从作用机理方面客观分析了各类方法的可行性,指出了目前室内研究和现场应用中存在的技术难点和问题,并展望了未来致密油藏提高采收率的研究重点和发展方向。历经多年的探索,已初步形成了注气、化学方法、智能水、溶剂法和纳米流体等提高致密油藏采收率的方法体系,其中,CO2、天然气和表面活性剂的应用潜力最大。岩芯尺度模拟结果和油藏规模效果存在较大差异甚至相悖,导致无法准确预测。所以,未来提高采收率研究重点应该瞄准关键科学问题,如注入介质地层流体储层间的相互作用机制,油气水在复杂裂缝系统中的多尺度渗流行为,致密基质裂缝间的“质”换机制等,同时融合信息化技术,切实推进致密油藏提高采收率技术与理论发展。The advancement of EOR methods in tight reservoirs in last ten years was comprehensively reviewed to promote the theoretical understanding.Moreover,the feasibility of these EOR methods was analyzed based on the mechanisms,and the technical issues and problems existing in lab scale and field scale investigations were presented.Finally,the research focus and development direction of tight reservoir EOR were prospected.After many years of exploration,a series of EOR methods,such as gas injection,chemical methods,smart water,solvent methods,and nanofluid,have been preliminarily formed for tight reservoirs.Among EOR methods,CO2,natural gas and surfactant hold the most promising potential for application.There are wide gaps and even contradictory conclusions between core scale and field scale studies,which makes it impossible to precisely predict the performance.Therefore,the future researches should be focused on the key scientific questions,such as the interactions between injectants,formation fluids and formation,the multiscale seepage behaviors of oil,gas and water in complex fracture systems,and the mass exchange between tight matrix and fracture,to promote the development of EOR techniques in tight reservoir integrating informative technology.

关 键 词：致密油藏 提高采收率 方法与理论 研究进展 发展方向 

分 类 号：TE357[石油与天然气工程—油气田开发工程]