天然气工业2026，Vol.46Issue(1)：75-86,12.DOI:10.3787/j.issn.1000-0976.2026.01.007
天然气藏提高采收率机理与技术路径
Enhanced recovery of gas reservoirs:Mechanisms and pathways
摘要
Abstract
Most of China's major gas fields have successively entered the mid-to-late development stage,but the average gas recovery factor remains relatively low.The recovery factor of gas reservoir is influenced significantly by development concept and technical pathways besides resource endowment,so it is imperative to strengthen the research and practice of enhanced gas recovery(EGR).Based on the domestic and international EGR practices,this paper deeply discusses the core concerns,EGR mechanisms,implementation pathways,main technologies,practical effectiveness,and future directions of gas reservoir development.The following results are obtained.First,to develop a gas reservoir,it is necessary to focus on pressure control,balanced reserve producing,unimpeded production systems,and water invasion.Second,the core mechanism of EGR lies in continuously improving the formation flow system,reducing system flow resistance,or optimizing energy consumption patterns by efficiently utilizing natural energy and effectively supplementing artificial energy.Third,a pathway of"three-stage progressive enhanced gas recovery"is proposed,which is to increase producible reserves to lay a foundation in Stage 1,reduce abandonment pressure to improve the efficiency in Stage 2,and supplement energy to expand the recovery boundary in Stage 3.In addition,the main technologies corresponding to different pathways are introduced.Fourth,the exploratory practices of enhanced recovery in different types of gas reservoirs globally are summarized,and the typical cases are analyzed in detail.Fifth,China possesses significant potential for enhanced gas recovery,and the future efforts should focus on five key directions,i.e.,deep gas reservoir characterization,water-sealed gas unsealing,whole-process collaborative optimization,CO2-EGR experiments,and reservoir stimulation and percolation improvement.In conclusion,the research results further solidify the theoretical foundation,implementation pathways,technical methods,and field practices for enhanced gas recovery,and can provide robust theoretical support for enhancing the recovery of developed gas reservoirs,powerfully advancing the development of EGR technologies,and ensuring national energy security.关键词
天然气提高采收率/气藏开发特征/机理/技术路径/案例分析/攻关方向Key words
Enhanced gas recovery/Gas reservoir development characteristics/Mechanism/Pathway/Case study/Research direction分类
能源科技引用本文复制引用
杨洪志,赵益,秦楠,梅青燕,彭先,张连进,赵梓寒,蔡珺君,杨山,张楷,严予晗..天然气藏提高采收率机理与技术路径[J].天然气工业,2026,46(1):75-86,12.基金项目
国家科技重大专项"四川盆地深层超深层碳酸盐岩气藏勘探开发技术与集成示范"(编号:2025ZD1402503)、中国石油天然气集团有限公司项目"复杂碳酸盐岩气藏效益上产与提高采收率技术研究"(编号:2023ZZ16-03). （编号:2025ZD1402503）
