Understanding of Long-Term CO₂-Brine-Rock Geochemical Reactions Using Numerical Modeling and Natural Analogue Study

Table 2

Physical parameters for the Longtan sandstone Formation.

Rock properties
Porosity (%)	6.52
Permeability (10^-15 m^2)	0.68
Density (kg·m^-3)	2.53
Temperature (°C)	70
Pressure (MPa)	16/16.5
Relative permeability parameters (van Genuchten model)
	0.42
Residual liquid saturation	0.15
Liquid saturation	1.0
Residual gas saturation	0.01
Capillary pressure parameters (van Genuchten model)
	0.42
Residual liquid saturation	0.15
(Pa^-1)	1.00-6
Pmax (Pa)	1.006
Liquid saturation	1.0