Research Article
Effects of Formation Dip on Gas Production from Unconfined Marine Hydrate-Bearing Sediments through Depressurization
Table 1
Main model parameters of the HBS in Shenhu area of the SCS.
| | Parameter | Value |
| | HBS thickness, | 40 m | | Porosity, | 0.38 | | Intrinsic permeability, | 1.0 × 10-14 m2 (1 mD = 1.0 × 10-15 m2) | | Gas composition | 100% CH4 | | Hydrate saturation in the HBS, | 0.40 | | Water salinity, | 3.30% | | Pressure at the middle of the HBS, | 16.0 MPa | | Temperature at the middle of the HBS, | 13.95°C | | Critical mobile porosity, | 0.05 | | Rock grain density, | 2600 kg/m3 | | Wet thermal conductivity, | 3.1 W/m/K | | Dry thermal conductivity, | 1.0 W/m/K | | Pore compressibility, | 1.0 × 10-8 Pa−1 | | Bottom-hole pressure, | 4 MPa | | Composite thermal conductivity model [8] | | | Capillary pressure model [53] | | | | 1.0 | | 0.45 | | 1.0 × 105 Pa | | Relative permeability model [1] | | | | | 3.572 | | 3.572 | | 0.30 | | 0.02 |
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