Numerical modeling of gas extraction from coal seam combined with a dual-porosity model: Finite difference solution and multi-factor analysis
Fuel(2022)
摘要
•Dual-porosity model combining free gas density gradient (FGDG) diffusion insight was developed.•Predicted result based on self-developed numerical simulator were consistent with field data.•A multi-factor sensitivity analysis affecting the gas flow rate from borehole was conducted.
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关键词
Coalbed methane extraction,Numerical dual-porosity model,Diffusion-seepage modeling,Free gas density gradient,Finite difference method,Gas flow rate
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