Effect of Natural Fractures on Stress Evolution of Unconventional Reservoirs Using a Finite Element Method and a Fracture Continuum Method

Table 1

Primary parameters of calculation.

Parameter	Value	Unit
Young’s modulus	35.5	GPa
Poisson’s ratio	0.2	—
Biot coefficient	1	—
Initial porosity	0.25	—
Fluid compressibility		MPa^-1
Fluid viscosity	1.1	MPa s
The principal stress in -direction	50	MPa
The principal stress in -direction	54	MPa
The principal stress in -direction	57	MPa
The initial pore pressure	30	MPa
The initial opening of natural fracture	0.2	mm
Average natural fracture spacing	20	m
Natural fracture dip	80	°
Natural fracture strike	40	°
Well radius	0.0762	m