Experimental research on displacing coal bed methane with supercritical CO2

摘要：

The high gas and low permeability are the common problems of coal mine in China, which restrain the mining of coal seam gas resources safely and efficiently. To solve the problem of low permeability of coal seam, an experimental system was set up and the effect of the displacement of methane by injecting supercritical CO2 into coal samples was studied by the use of the experimental system. The experimental results indicated that due to the extraction effect of supercritical CO2 the coal porosity was changed and the seepage channel for methane was broadened. Thus, the methane could be desorbed effectively from the coal matrix, and flow through more cracks at higher speed.

关键词： supercritical CO2 displacement methane seepage

作者: Yang Tao Nie Baisheng Yang Dong Zhang Ruming Zhao Caihong

作者单位: Faculty of Resources and Safety Engineering, China University of Mining & Technology (Beijing), Beij College of Mining Technology, Taiyuan University of Technology, Taiyuan 030024

会议类型: 国际会议

会议名称: The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)

会议地点: 北京

会议语种:英文

页码: 174-180

在线出版日期: 2011-10-27（万方平台首次上网日期，不代表论文的发表时间）