探索CCUS-EGR进攻性提高采收率新技术拓展天然气藏储碳新领域  

Exploring CCUS-EGR New Technology to Aggressively Improve Natural Gas Recovery and Expand the New Field of Underground Carbon Storage in Gas Reservoirs

作　　者：廖广志 何新兴 位云生[2] 王高峰[2] 方建龙 崔永平 郑达 胡占群 沙秋 郭建林[2] 闫海军[2] 文绍牧[3] 吴正[4] Liao Guangzhi;He Xinxing;Wei Yunsheng;Wang Gaofeng;Fang Jianlong;Cui Yongping;Zheng Da;Hu Zhanqun;Sha Qiu;Guo Jianlin;Yan Haijun;Wen Shaomu;Wu Zheng(PetroChina Oil,Gas and New Energy Company,Beijing 100007,China;PetroChina Research Institute of Petroleum Exploration&Development,Beijing 100083,China;PetroChina Southwest Oil&Gasfield Company,Chengdu 610051,China;PetroChina Changqing Oilfield Company,Xi’an 710018,China)

机构地区：[1]中国石油油气和新能源分公司 [2]中国石油勘探开发研究院 [3]中国石油西南油气田公司 [4]中国石油长庆油田公司

出　　处：《石油科技论坛》2025年第1期9-16,共8页PETROLEUM SCIENCE AND TECHNOLOGY FORUM

基　　金：中国石油天然气集团有限公司科技项目“天然气藏提高采收率重大开发试验科技专项”(编号:2023YQX10501)。

摘　　要：中国天然气探明储量巨大,但其长期规模稳产面临复杂气藏大幅度提高采收率技术不明等系列挑战。补充气藏能量、优势吸附置换、连续对流排驱和重力分异作用是CO_(2)驱提高气藏采收率的主要机理;开展CCUS-EGR(碳捕集、驱气利用与埋存)工作对于烃类气的最大化采出、深部储气地质空间的利用和规模碳减排意义重大。碳中和背景下,CCUS-EGR技术具有广阔应用前景。经过近20年CCUS-EOR技术攻关研究,碳捕集、CO_(2)驱注采、CO_(2)驱流体集输与处理、长距离CO_(2)管道建设等关键性硬工程技术已经成熟配套,为成功开展全流程CCUS-EGR重大开发试验提供了必要技术条件;当前,CCUS-EGR技术研究核心任务是检验CO_(2)驱气实际技术效果,认识CO_(2)驱气开发规律,建立普适性CO_(2)驱气藏工程方法。为突破中国石油CCUS-EGR技术,建议针对具有较好碳封存条件的特殊岩性气藏、致密砂岩气藏、火山岩气藏、页岩气藏和煤岩气藏,开展多类型气藏CCUS-EGR重大开发试验,形成CO_(2)驱进攻性提高气藏采收率与储碳科学理论与技术;其中,检验烟气组分协同驱替效果和验证扩大CO_(2)驱气波及体积技术是两大试验内容,建立完善CO_(2)驱见气时间预报方法、提高天然气采收率值等关键生产指标计算方法和CCUSEGR碳减排量核算方法是重点研究内容。Huge natural gas reserves was proven in China,but its long-term stable production faces a series of challenges owing to unknown technologies to dramatically improve the recovery factor of complicated gas reservoirs.The main mechanisms for CO_(2) flooding to improve the gas recovery(EGR)from gas reservoirs include gas reservoir energy supplement,substitution of dominant CO_(2) absorption,continuous convective displacement and gravity differentiation.Research on CCUS(carbon capture,utilization and storage)is of great importance to maximizing hydrocarbon gas recovery,using deep geological space for gas storage and reducing carbon emission on a large scale.Under the background of carbon neutrality,the CCUS-EGR technology has a broad prospect for application.After nearly 20 years of CCUS-EOR technology research,key engineering technologies,such as carbon capture,CO_(2) flooding injection and production,CO_(2) flooding fluid gathering and processing,and long-distance CO_(2) pipeline construction have matured,thus providing the necessary technical conditions for carrying out the full-process CCUS-EGR development experiments.At present,the key task of CCUS-EGR research is to verify the actual technical effect of CO_(2) flooding,identify the laws for CO_(2) flooding development of gas reservoirs,and establish an extensively-adapted CO_(2) flooding engineering method for gas reservoirs.To make a breakthrough in PetroChina’s CCUS-EGR technology,it is proposed to carry out major CCUS-EGR development experiments on a variety of gas reservoirs with good seal and storage conditions,such as gas reservoirs of special lithological characters,tight sandstone gas reservoirs,volcanic rock gas reservoirs,shale gas reservoirs and coal rock gas reservoirs,thus developing the theory and technology concerning aggressive improvement of gas recovery factor and carbon storage in gas reservoirs by CO_(2) flooding.Of those technologies,the experiments should be focused on testing the synergistic displacement effect of flue gas components and

关 键 词：CO_(2)驱气机理 进攻性提高气藏采收率 储碳 CCUS-EGR 重大开发试验 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]