Research Article
Study on Propagation Behaviors of Hydraulic Fracture Network in Tight Sandstone Formation with Closed Cemented Natural Fractures
Table 2
Mechanical parameters in the numerical model.
| | Parameter | Rock matrix | Natural fracture |
| | Homogeneity | 3.5 | 2.5 | | Elastic modulus (GPa) | 25.0 | 3.0 | | Compressive strength (MPa) | 62.0 | 5.0 | | Tensile strength (MPa) | 6.5 | 0.5 | | Poisson’s ratio | 0.2 | 0.25 | | Coefficient of residual strength | 0.2 | 0.3 | | Permeability (10-3 μm2) | 0.3 | 3.0 | | Porosity (%) | 0.12 | 0.5 | | Coupling coefficient | 0.1 | 0.1 |
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