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《Journal of China Coal Society》 2007-04
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A model for enhanced coalbed methane and CO_2 sequestration with multilateral wells

XI Chang-feng1,WU Xiao-dong1,WANG Xin-hai2(1.Ministry of Education Key Laboratory of Petroleum Engineering,China Petroleum University(Beijing),Beijing 102249,China;2.Institute of Geoscience,Yangtze River University,Jingzhou 434023,China)  
According to mechanism of ECBM/CO2 sequestration,a mathematical model was developed.In the mathematical model,two-phase(water and gas) flow,multiple gas components and mixed gas sorption,impact of coal matrix shrinkage and swelling on permeability,pressure loss in wellbore were studied.In terms of the mathematical model,a numerical program was gained and a case was simulated.The simulation results show that the injection of CO2 can largely enhance daily production and cumulative production of coalbed methane.
【Fund】: 国家教育部博士基金资助项目(20030425001)
【CateGory Index】: TD845
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