Effects of Irreducible Fluid Saturation and Gas Entry Pressure on Gas Production from Hydrate-Bearing Clayey Silt Sediments by Depressurization

Table 1

Main hydrate reservoir properties and conditions in site SH2.

Overburden layer thickness,	30 m
Underlying layer thickness,	30 m
HBL thickness,	40 m
Completion interval ()	20 m (in the middle of HBL)
Borehole radius	0.1 m
Initial pressure, (at base of HBL)	14.97 MPa
Initial temperature, (at base of HBL)	14.87 °C
Gas composition	CH4
Porosity, (all formations)	38%
Initial saturation in the HBL	,
Intrinsic permeability, (all formations)	10 mD
Water salinity (mass fraction)	3.05%
Grain density, (all formations)	2600 kg/m^3
Dry thermal conductivity, (all formations)	1.0 W/m/°C
Wet thermal conductivity, (all formations)	3.1 W/m/°C
Composite thermal conductivity model
Capillary pressure model
	0.45
Relative permeability model
	3.572 [38]
	3.572 [38]