The Role of Coal Mechanical Characteristics on Reservoir Permeability Evolution and Its Effects on CO₂ Sequestration and Enhanced Coalbed Methane Recovery

Table 2

Key parameters for model validation.

Parameter	Value	Remake	Parameter	Value	Remake
Initial permeability (, mD)	3.8	[54]	Elastic modulus of coal seam (, GPa)	2.7	[42]
Porosity of fracture (, %)	0.6	[54]	Poisson’s ratio of coal ()	0.35	[42]
Langmuir pressure constant of CH4 (, MPa)	1.99	[54]	Langmuir volume constant of CH4 (, m^3/kg)	0.030	[54]
Initial CH4 pressure in fracture (, MPa)	5	[54]	Initial CH4 pressure in matrix (, MPa)	5	[54]