枯竭气藏CO_(2)埋存潜力计算方法研究  

Study on calculation method of CO_(2) storage potential in depleted gas reservoir

作　　者：唐良睿 贾英[2] 严谨[2] 李广辉 汪勇[1] 何佑伟 秦佳正 汤勇[1] TANG Liangrui;JIA Ying;YAN Jin;LI Guanghui;WANG Yong;HE Youwei;QING Jiazheng;TANG Yong(Petroleum Engineering School,Southwest Petroleum University,Chengdu,Sichuan 610500,China;Sinopec Petroleum Exploration and Production Research Institute,Beijing 100089,China;No.7 Oil Recovery Plant,CNPC Changqing Oilfield Company,Xi’an,Shaanxi 710000,China)

机构地区：[1]西南石油大学石油与天然气工程学院,四川成都610500 [2]中国石化石油勘探开发研究院,北京100089 [3]中国石油长庆油田第七采油厂,陕西西安710000

出　　处：《油气藏评价与开发》2021年第6期858-863,共6页Petroleum Reservoir Evaluation and Development

基　　金：国家自然科学基金“超低渗透油藏CO_(2)强化采油过程中多孔介质相态及微观渗流机理研究”(51974268);四川省科技计划项目“特低渗透油藏CO_(2)驱微观渗流理论及影响机制研究”(2019YJ0423)。

摘　　要：温室气体CO_(2)地质封存是应对碳达峰和碳中和的重要手段,而枯竭气藏是埋存CO_(2)优势显著的靶点。基于CO_(2)在气藏中的不同存在形式,考虑溶解埋存和矿化埋存等机理,在气藏CO_(2)理论埋存量计算方法的基础上,建立气藏CO_(2)有效埋存量计算方法,可用于估算枯竭气藏CO_(2)埋存潜力。建立低渗气藏机理模型,在开发后期进行CO_(2)埋存,考虑CO_(2)溶解于地层水及CO_(2)与水和岩石发生矿化反应,对比计算结果与数模结果,超临界埋存量、溶解埋存量和矿化埋存量的误差分别为2.81%、7.37%和6.25%,有效埋存量误差仅为3.06%。The geological sequestration of greenhouse gas,CO_(2),is an important means to cope with carbon peaking and carbon neutralization.However,the depleted gas reservoirs are the significant targets for the storage of CO_(2).Due to the different forms of CO_(2)in gas reservoirs,the effective CO_(2)storage calculation method of gas reservoirs is established based on the theoretical CO_(2)storage calculation method,which can be used to estimate the CO model of low permeability gas reservoir is established for the CO 2 storage potential of the depleted gas reservoirs.Meanwhile,the 2 storage in the later stage of the development.Considering the dissolution of CO_(2)in formation water and the mineralization reaction of CO_(2)between water and rock,the error of supercritical buried stock,dissolved buried stock and mineralized buried stock is 2.81%,7.37%and 6.25%,respectively,and the error of effective buried stock is only 3.06%by comparing the calculated results with the numerical and analog results.

关 键 词：CO_(2)驱 埋存潜力 枯竭气藏 数值模拟 埋存机理 

分 类 号：TE341[石油与天然气工程—油气田开发工程]