Adaptive Finite Element-Discrete Element Analysis for Microseismic Modelling of Hydraulic Fracture Propagation of Perforation in Horizontal Well considering Pre-Existing Fractures

Table 2

Basic physical parameters.

Parameter	Value
Horizontal in situ stress in direction (MPa)	40
Vertical in situ stress in direction (MPa)	44
Fluid injection rate (m^3/s)	0.1
Proppant concentration (Kg/m^3)	200
Proppant volume in one fracturing stage (m^3)	11.45
Leak-off coefficient ()
Leak-off coefficient ()
Pore pressure (MPa)	30
Density (Kg/m^3)
Biot coefficient	0.8
Young’s modulus (GPa)	32
Poisson’s ratio	0.2
Permeability (nD)	50
Porosity	0.05
Cohesion c (MPa)	25
Friction angle	45
Gravity	9.81
Tensile strength (MPa)	1.0
Fracture energy (N⋅m)	50
Dynamic viscosity coefficient of the pore fluid (Pa⋅s)
Dynamic viscosity coefficient of the fracturing fluid (Pa⋅s)
Liquid density of the pore fluid (Kg/m^3)
Liquid density of the fracturing fluid (Kg/m^3)
Bulk modulus of the pore fluid (MPa)	2050
Bulk modulus of the fracturing fluid (MPa)	2000