Table 1: Hydrate deposit properties at the AT1 site.

ParameterValue

MHCZ thickness, 61 m
Gas composition100% CH4
Water salinity, 3.50%
Pressure at the base of the MHCZ, 14.7 MPa
Temperature at the base of the MHCZ, 14.3°C
Critical mobile porosity, 0.05
Rock grain density, 2650 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
Composite thermal conductivity model [35]
Capillary pressure model [36]
1.0
0.45
[17]1.0 × 105 Pa
Relative permeability model [7]

[34]3.572
3.572
0.20
0.02