Experimental and Numerical Simulation Study of Hydraulic Fracture Propagation during Coalbed Methane Development

Table 3

Input parameters for simulating hydraulic fracture propagates in naturally fractured reservoirs.

Parameters	Value
Young’s modulus	2.6 GPa
Poisson’s ratio	0.25
Formation effective permeability	2.6^-^4 D
Porosity	8%
Pressure dependent leak-off coefficient	1^-14
Specific weight of injection fluid	9800
Fluid viscosity	1 cp
Tensile strength of intact coal	2 MPa
Shear strength of intact coal	6 MPa
Tensile strength of natural fracture	0.55 MPa
Shear strength of natural fracture	1.75 MPa
Fracture displacement	0.001 m
Injection rate	0.01 m^3/s
Initial pore pressure	3.14 MPa