Cleat-scale modelling of the coal permeability evolution due to sorption-induced strain

Coal permeability is known to be affected by the sorption-induced strain. Indeed, coal swells with gas sorption and shrinks with desorption, which is likely to modify the cleat aperture and thus the permeability. Coal permeability evolution is crucially important for either Coalbed Methane production (CBM) or Carbon dioxide Capture and Storage (CCS). A model is developed at the scale of the fractures to take into account the hydro-mechanical...