注入二氧化碳驱替煤层甲烷的试验研究  

Study on displacement coalbed methane by carbon dioxide injection

作　　者：李向东[1,2] 冯启言[1,2] 刘波[2] 周来[2] 

机构地区：[1]江苏省资源环境信息工程重点实验室,江苏徐州221116 [2]中国矿业大学环境与测绘学院,江苏徐州221116

出　　处：《洁净煤技术》2009年第2期101-103,共3页Clean Coal Technology

基　　金：江苏省自然科学基金项目(BK2007034);江苏省研究生培养创新工程项目(2006);中国矿业大学青年科研基金项目(2006A032)

摘　　要：根据煤储层吸附-解吸机理，采用注入CO2驱替煤样CH2实验研究。结果表明：CO2的吸附能力高于CH4。CO2驱替与纯CH4的解吸过程比较表明，CH4在单位压降下的解吸率，明显高于纯CH4解吸时单位压降下的解吸率，CH4的解吸率比原来提高77．7％。The adsorption-desorption behavior of carbon dioxide and methane gases in coal samples were experimentally studied, a modeling experiment of carbon dioxide displacing CH4 was accomplished. The results indicate that the adsorption of CO2 is prior to that of CH4 and the desorption rate of CH4 at unit pressure drop in the process of carbon dioxide displacement is obviously higher than that in the process of pure CH4 desorption, the coalbed methane desorption rate at unit pressure drop of coal was increased by 77.7%.

关 键 词：煤层气 吸附-解吸 CO2驱替 

分 类 号：TD7[矿业工程—矿井通风与安全]