Research Article
Mechanism of Permeability Evolution for Reservoir Sandstone with Different Physical Properties
Table 5
Permeability and strength considering confining pressure 15 MPa and different water pressure.
| | Permeable pressure (MPa) | Initial permeability (10−18 m2) | Minimum permeability
(10−18 m2) | Maximum permeability
(10−18 m2) | Peak strength (MPa) | | Without mud | With mud | Without mud | With mud | Without mud | With mud | Without mud | With mud |
| | 2 | 36.22 | 14.16 | 24.98 | 10.27 | 74.9 | 12.24 | 103.32 | 62.44 | | 3 | 57.22 | 26.68 | 45.52 | 16.48 | 109.74 | 26.93 | 103.19 | 59.93 | | 4 | 75.94 | 37.96 | 61.94 | 22.08 | 119.56 | 60.19 | 100.75 | 59.20 |
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