深部煤层封存CO2的地质主控因素探讨A Discussion on Main Geologic Controlling Factors of CO2 Sequestration in Deep Coal Seams
降文萍,崔永君
摘要(Abstract)：
目前世界上多数国家都以CO2捕获和封存作为CO2减排的有效措施之一。向深部不可采煤层中封存CO2能一举两得,既可实现CO2减排的目的,又能置换出煤层甲烷气体。从实验室研究角度出发,分析了煤级、温度、压力、水分及氮气对煤吸附CH4、CO2的影响,并结合煤层气开发选区评价方法,探讨了影响煤层封存CO2的地质主控因素,认为煤种、煤厚、煤层埋深、渗透率是主要控制因素,而地质构造、水文地质、甲烷气含量等为次一级控制因素。综合分析认为,我国煤层封存CO2的潜力很大,而华北地区是深部煤层封存CO2的首选地区。
关键词(KeyWords)： 煤层气;吸附;封存;CO2;地质因素
基金项目(Foundation): “973”国家重点基础研究发展规划项目课题(2005CB221501-04);; 国家科技重大专项课题(2008ZX05040)资助
作者(Author): 降文萍,崔永君
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