Simulation of Methane Recovery from Gas Hydrates Combined with Storing Carbon Dioxide as Hydrates

Table 2

Basic parameters and settings for the depressurization scenario.

Parameter	Value	Parameter	Value
Diameter of area	1,000 m	Intrinsic permeability 𝐾0	500 mD
Height of area	20 m	Brooks-Corey parameter 𝑘	2,0
Porosity of sediment	0.50	Brooks-Corey parameter 𝜎𝐺	1.75
Initial gas saturation	0.05	Brooks-Corey parameter 𝜎𝐿	4.0
Initial liquid saturation	0.55	Effective resident gas saturation	0
Initial methane hydrate saturation	0.40	Effective resident liquid saturation	0.20
Initial pressure	77 bars	Entry capillary pressure	2.8×10^4 Pa
Initial temperature	10°C	Capillary pressure exponent 𝜎𝐶	0.50
Initial salinity (std. sea salt composition)	35 g/kg