Research Article
Pressure-Predicting Model for Ultralow-Permeability Reservoirs considering the Water Absorption Characteristics of Mudstone Formations
Table 4
Reservoir static parameters of the whole lithology ideal model.
| | Type | Subzone number | Lithology | (10-3 μm2) | (%) | Net/gross | | (atm) | (MPa·m-1) | (×10-2 MPa-1) |
| | Mudstone formations | 1 | Mudstone | 0 | 2.98 | 1 | 0.7 | 30 | — | — | | 2 | 1 | — | — |
| | Transition layers | 3 | Sandy mudstone | 0.5 | 11.47 | 1 | 0.7 | 30 | 0.307 | 0.14 | | 4 | 1 | 0.307 | 0.14 | | 5 | Transition lithology | 1 | 12.16 | 1 | 0.7 | 30 | 0.157 | 0.22 | | 6 | 1 | 0.157 | 0.22 | | 7 | 1 | 0.157 | 0.22 | | 8 | 1 | 0.157 | 0.22 |
| | Reservoir | 9 | Sandstone | 3 | 14.68 | 1 | 0.35 | 30 | 0.024 | 0.38 |
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