文献类型：期刊文献

英文题名：Influence of water injection on the desorption characteristics of coalbed methane

作者：Li, Peng Du, Feng Wang, Fakai Zhang, Pan Jiang, Yuxiang Cui, Bo

第一作者：Li, Peng

通信作者：Wang, FK[1]

机构：[1]State Key Lab Coal Mine Safety Technol, Fushun, Peoples R China;[2]Shenyang Res Inst, China Coal Technol & Engn Grp, Fushun, Peoples R China;[3]Guizhou Inst Technol, Coll Min Engn, Guiyang 550000, Peoples R China;[4]Bijie Energy Adm, Bijie, Peoples R China;[5]Shandong Energy Guizhou Min CO LTD, Guiyang, Peoples R China

第一机构：State Key Lab Coal Mine Safety Technol, Fushun, Peoples R China

通信机构：corresponding author), Guizhou Inst Technol, Coll Min Engn, Guiyang 550000, Peoples R China.|贵州理工学院矿业工程学院;贵州理工学院;

年份：2020

卷号：8

期号：12

起止页码：4222-4228

外文期刊名：ENERGY SCIENCE & ENGINEERING

收录：;EI(收录号：20203609144580);Scopus(收录号：2-s2.0-85090221867);WOS:【SCI-EXPANDED(收录号:WOS:000566268000001)】；

基金：National Key R&D Program of China, Grant/Award Number: 2017YFC0804201; Mechanism of Coal Bed Gas Desorption and Induced Dynamic Disasters in Guizhou Karst area, Grant/Award Number: KY[2015]353; Experimental Study on Coal Bed Adsorption Capacity and Improvement of Gas Recovery Rate, Grant/Award Number: LH[2015]7107; High-level Talent Research Startup Fund of Guizhou Institute of Technology, Grant/Award Number: 2003001061

语种：英文

外文关键词：desorbed gas replacement; gas desorption; injected water; pressure released

摘要：Hydraulic methods have been extensively employed to improve the production rate of commercially viable coalbed methane and prevent potential mining disasters resulting from the production of this methane by increasing the permeability of coal seams. In this paper, an experimental system with a stirrer was utilized to study the effects of water injection on the gas desorption characteristics of coal seams. Pressure-released desorption values and total gas desorption values under conditions of different adsorption equilibrium pressures and water contents were determined. The results show that both the free gas and the adsorbed gas could be replaced by the injected water, causing the system pressure to increase significantly. When releasing the system pressure, the gas desorption value of the water-injected coal sample was reduced. After water injection, the total desorption value of the coal was increased. Thus, water injection could help to promote coal gas desorption.