Effects of Stress and Temperature on the Permeability of Gas-Saturated Wet Coal

Fracturing and heat injection are promising methods for in situ modification of low-permeability reservoirs to enhance coalbed methane (CBM) recovery. The technical processes enable substantial water residence in the reservoirs and cause rebalance and redistribution of the stress and temperature fields around the wells or boreholes. In this study, a dual-porosity permeability model is established. The coupling effects of variable stresses and...