Displacement Mechanism of the Two-Phase Flow Model for Water and Gas Based on Adsorption and Desorption in Coal Seams
On the basis of seepage theory of gas flow in coal seams, the mechanics of fluids in porous media and the continuum mechanics, a continuum theory of multiphase porous media is developed to analyze the displacement mechanism of the two-phase flow in a porous medium saturated by a mixture of two immiscible, viscous, compressible fluids. The water injection induced the gas content changes, gas adsorption/desorption, the associated characteristics of relative permeability, water injection efficiency and the gas content changes in coal seam during this process were numerically simulated. The numerical simulations are helpful for understanding the displacement mechanism of the two-phase flow and taking effective measures to prevent the occurrences of gas outbursts in collieries.
Two-phase flow Relative permeability Numerical simulation Adsorption and desorption
CHEN Shikuo YANG Tianhong WEI Chenhui
Center for rock instability and seismicity research Northeastern University, Shenyang, 110819
国际会议
成都
英文
597-603
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）