注气提高采收率技术进展及前景展望  

Technology progress and prospects of enhanced oil recovery by gas injection

作　　者：袁士义 王强[2,3] 李军诗[1] 韩海水[2] Yuan Shiyi;Wang Qiang;Li Junshi;Han Haishui(CNPC Advisory Center,Beijing 100724,China;State Key Laboratory of Enhanced Oil Recovery,Beijing 100083,China;PetroChina Research Institute of Petroleum Exploration and Development,Beijing 100083,China)

机构地区：[1]中国石油天然气集团有限公司咨询中心,北京100724 [2]提高石油采收率国家重点实验室,北京100083 [3]中国石油勘探开发研究院,北京100083

出　　处：《石油学报》2020年第12期1623-1632,共10页Acta Petrolei Sinica

基　　金：中国石油天然气集团公司科学研究与技术开发项目(2016D-5003-01)资助。

摘　　要：在跟踪调研全球注气提高采收率技术发展及应用的基础上,总结分析了国外气驱提高采收率技术发展历程及CO2驱、碳捕集利用与封存(CCUS)、烃气驱、顶部注气重力驱、空气驱等矿场成功应用实例和对中国发展气驱的启示。对中国以陆相沉积为主的油藏10余年CO2驱(CCUS)、顶部注烃气驱、减氧空气驱等注气提高采收率技术领域形成的特色理论、关键技术和矿场试验进行了总结研究。参照美国注气技术发展历程,分析了中国适宜气驱的油藏类型及潜力、气源及注入方式、配套技术发展、试验类型及成效,明确了中国注气技术已处于从工业试验向工业化规模推广应用发展的关键阶段,未来5~10年有望上产至年产油(500~1000)×104t,将发展成为中国继热采、化学驱后最重要的油田提高采收率技术,对中国原油稳产将起到重要保障作用。同时分析了中国注气技术发展尚面临油藏条件、试验类型和规模、气源供给、配套技术及成本、政策支持等方面的问题,从国家和各大石油公司层面给出了加快气驱关键技术攻关试验及有效规模应用的对策建议。On the basis of tracking and investigating the development and application of the gas injection technology for enhanced oil recovery worldwide,this paper summarizes and analyzes the development history of foreign gas flooding technology for enhanced oil recovery and the successful application practice in oilfields such as CO2 flooding,carbon capture utilization and storage(CCUS),and hydrocarbon gas flooding,top gas injection-assisted gravity flooding and air flooding,and their enlightenment to the development of gas flooding in China.Then it summarizes and studies the characteristic theories,key technologies,and pilot tests in the fields of CO2 flooding(CCUS),top hydrocarbon gas flooding,oxygen-reduced air flooding,and other enhanced oil recovery technologies by gas injection,applied to the reservoirs dominated by continental deposits in China for over ten years.Based on the development history of gas injection technology in the United States,this paper analyzes the types and potentials of reservoirs suitable for gas flooding in China,gas sources and injection methods,development of matching technologies,pilot test types and effect,and clearly demonstrates that China’s gas injection technology is at the key stage of development from industrial test to commercial enlargement and application.In the next 5-10 years,it is expected to increase production to(500-1000)×104t/a,and it will develop into the most crucial technology for enhanced oil recovery in oilfields following the thermal recovery and chemical flooding technologies,which will play an important role in safeguarding stable oil production in China.Moreover,an analysis is conducted on the the problems faced by China in the development of gas injection technology,such as reservoir conditions,pilot test type and scale,gas source supply,matching technologies and cost,as well as policy support,and gives countermeasures for accelerating technical tests for the key technologies of gas flooding and effective large-scale application from the perspective of nation

关 键 词：注气 提高采收率 技术进展 前景展望 对策建议 

分 类 号：TE357.7[石油与天然气工程—油气田开发工程]