Mineral Filling Pattern in Complex Fracture System of Carbonate Reservoirs: Implications from Geochemical Modeling of Water-Rock Interaction

Table 2

Hydrogeological and thermodynamical parameters used in the simulation (Note: S_l in the k_rl, k_rg, and P_cap columns refers to liquid saturation).

Parameter	Magnitude	Unit
Matrix density	2610	Kg/m^3
Matrix porosity	4.2	%
Matrix vertical permeability	1.5 × 10^-14	m^2
Matrix horizontal permeability	5 × 10^-13	m^2
Matrix CWET	2.51	W/(m·K)
Matrix SPHT	920	J/(kg·K)
Fracture density	2200	Kg/m^3
Fracture porosity	10	%
Fracture vertical permeability	1.5 × 10^-12	m^2
Fracture horizontal permeability	5 × 10^-11	m^2
Fracture CWET	2.10	W/(m·K)
Fracture SPHT	800	J/(kg·K)
Relative permeability
Liquid [71]:
Irreducible water saturation Slr	Slr = 0.3 Slr = 0.3
Exponent	m = 0.457
Gas [72]:
krg = (1-S)^2(1-S^2)	S = (Sl-Slr)/(Sl-Slr-Sgr)
Irreducible gas saturation	Sgr = 0.05
Capillary pressure
Van Genuchten(1980)
Irreducible water saturation	Slr = 0.03
Exponent	m = 0.457
Strength coefficient	P0 = 19.61 kPa