Research Article
Numerical Simulation of Artificial Fracture Propagation in Shale Gas Reservoirs Based on FPS-Cohesive Finite Element Method
| Parameter | Value | Parameter | Value |
| Maximum in situ horizontal stress | 36 MPa | Minimum in situ horizontal stress | 26/31/36 MPa | Overburden stress | 40 MPa | Initial pore pressure | 24 MPa | Young’s modulus | 10 GPa | Poisson’s ratio | 0.24 | Porosity | 0.02 | Permeability | 0.06 mD | Tensile strength of the rock | 2.5 MPa | Tensile strength of the natural fracture | 2/1.7/1.5 MPa | Shear strength of the rock | 2 MPa | Shear strength of the natural fracture | 1.5/1.3/1 MPa | Normal energy release rate of the rock | 28 N/mm | Normal energy release rate of the natural fracture | 26/24/22 N/mm | Tangential energy release rate of the rock | 28 N/mm | Tangential energy release rate of the natural fracture | 26/24/22 N/mm | Filtration coefficient | | Approaching angle | 30°/45°/60°/75° | Injection rate | 5 m3/min·m | Viscosity | 15 mPa•s |
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