Research Article
Effect of Perforation Interval Design on Gas Production from the Validated Hydrate-Bearing Deposits with Layered Heterogeneity by Depressurization
Table 1
Main parameters of hydrate deposits in the model [
22,
33,
48,
54].
| | Parameter | Value |
| | Thickness of model, | 92 m | | Length of perforation interval | 12 m | | Borehole radius, | 0.1 m | | Initial pressure at the bottom of reservoir, | 11.3 MPa | | Initial temperature at the bottom of reservoir, | 12.55°C | | Wet thermal conductivity, | 3.1 W/m/K | | Dry thermal conductivity, | 1.0 W/m/K | | Water salinity, | 5.00% | | Gas composition | 100% CH4 | | Absolute permeability of hydrate reservoir, | Layered heterogeneous as shown in Figure 5(a) | | Porosity, | Layered heterogeneous as shown in Figure 5(b) | | Hydrate saturation | Layered heterogeneous as shown in Figure 5(c) | | Pore compressibility, | | | Parameters in capillary pressure model | | | | 1.0 | | | 0.45 (sand), 0.15 (clay) | | | 104 Pa (sand), 105 Pa (clay) | | Parameters in relative permeability model | | | | 3.5 (sand), 5.0 (clay) | | | 2.5 (sand), 3.0 (clay) | | | 0.20 (sand), 0.40 (clay) | | | 0.02 (sand), 0.05 (clay) |
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