Numerical Simulation Research on Hydraulic Fracturing Promoting Coalbed Methane Extraction

Table 2

Simulation strategy.

Program	Model
Case 1: influence of initial permeability on methane extraction effect of hydraulic fracturing well	Model 1: k0 = 5 × 10^−17 m^2
	Model 2: k0 = 9 × 10^−17 m^2
	Model 3: k0 = 13 × 10^−17 m^2
	Model 4: k0 = 17 × 10^−17 m^2
Case 2: influence of initial coalbed pressure on methane extraction effect of hydraulic fracturing well	Model 1: P0 = 2.53 MPa;
	Model 2: P0 = 3.53 MPa
	Model 3: P0 = 4.53 MPa
	Model 4: P0 = 5.53 MPa
Case 3: influence of fracture length on methane extraction effect of hydraulic fracturing well	Model 1: L = 10 m
	Model 2: L = 15 m
	Model 3: L = 20 m
	Model 4: L = 25 m