(1. State Key Laboratory of Coal Mine Disaster Dynamics and Control,Chongqing University,Chongqing 400030,China;2. College of Resource and Environmental Sciences,Chongqing University,Chongqing 400030,China;3. State and Local Joint Engineering Laboratory of Methane Drainage in Complex Coal Gas Seam,Chongqing University,Chongqing 400030,China)
Abstract:The studied specimen was briquettes molded by coal from 3# coalbed of Zhaozhuang coal factory,Jincheng Coal Industrial Company. An experimental plan was designed to test the influence of water content on methane permeability. By using self-developed “coal containing gas thermal-hydrological-mechanical(THM) coupling experimental equipment”,the change rule of water content effects permeance of coalbed methane was studied. The research results showed that:under the conditions of constant temperature and effective stress but different water contents,the methane effective permeability increased with the decreasing of water content in coal. In the range of water content tested in this experiment,the relationship between water content of coal and methane effective permeability could be expressed by a linear function. The water in coalbed gas reservoirs occupies space of permeance pores in coal seams and decreases methane transportation passages which makes the transportation difficulty. According to the analysis of experimental results,it is theoretically proven that to wet the coal by pouring water could be used as a measure to prevent coal and gas outburst.
尹光志1,2,3,蒋长宝1,2,3,许 江1,2,3,彭守建1,2,3,李文璞1,2,3. 煤层气储层含水率对煤层气渗流影响的试验研究[J]. 岩石力学与工程学报, 2011, 30(S2): 3401-3406.
YIN Guangzhi1,2,3,JIANG Changbao1,2,3,XU Jiang1,2,3,PENG Shoujian1,2,3,LI Wenpu1,2,3. EXPERIMENTAL STUDY OF INFLUENCES FOR WATER CONTENT IN COALBED GAS RESERVOIRS ON METHANE SEEPAGE. , 2011, 30(S2): 3401-3406.
孙可明,潘一山,梁 冰. 流固耦合作用下深部煤层气井群开采数值模拟[J]. 岩石力学与工程学报,2007,26(5):994-1 001.(SUN Keming,PAN Yishan,LIANG Bing. Numerical simulation of deep coal-bed methane multi-well exploitation under fluid-solid coupling[J]. Chinese Journal of Rock Mechanics and Engineering,2007,26(5):994-1 001.(in Chinese))
[2]
鲜学福,杨明莉. 我国煤层气开发基础研究方面的一些进展和展望[J]. 中国科技大学学报,2004,34(增1):387-398.(XIAN Xuefu,YANG Mingli. Some progress and prospects in basic researches of coalbed gas development in China[J]. Journal of University of Science and Technology of China,2004,34(Supp.1):387-398.(in Chinese))
Your browse does not support frame!