Research Article
Study on Non-Darcian Flow in Interlayer Shear Weakness Zones in the Basalt by High-Pressure Packer Tests
Table 5
The obtained equivalent permeability coefficient under different injection pressure by two methods in borehole CZK88.
| | Test section status | Injection pressure (MPa) | Equivalent permeability coefficient (cm/s) | | Secant method | Tangent method |
| | Undamaged | 0.3 | 7.03 × 10-7 | 9.50 × 10-7 | | 0.5 | 8.22 × 10-7 | 1.11 × 10-6 | | 0.7 | 7.73 × 10-7 | 1.04 × 10-6 | | 1.0 | 7.59 × 10-7 | 1.03 × 10-6 | | 1.5 | 8.43 × 10-7 | 1.14 × 10-6 | | 2.0 | 1.17 × 10-6 | 1.58 × 10-6 | | 2.5 | 1.23 × 10-6 | 1.66 × 10-6 |
| | Damaged | 2.5 | 3.70 × 10-7 | 3.36 × 10-6 | | 3.0 | 3.37 × 10-6 | 3.07 × 10-5 | | 3.5 | 8.22 × 10-6 | 7.48 × 10-5 |
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