Simulation and Analysis of Long-Term CO₂ Trapping for the Shenhua CCS Demonstration Project in the Ordos Basin

Table 3

Hydrogeological parameters of the three formations used in this study.

Parameters	Liujiagou formation	Shiqianfeng formation	Shihezi formation
Permeability (m^2)	2.81 × 10^−15	6.58 × 10^−15	5.99 × 10^−15
Porosity	0.100	0.129	0.126
Pore compressibility (Pa^−1)	4.5 × 10^−10	4.5 × 10^−10	4.5 × 10^−10
Rock grain density (kg/m^3)	2600	2600	2600
Temperature (°C)	55	62	67
Pressure (MPa)	16	18.9	21
Salinity (wt.%)	6	3	0.9
Residual gas saturation,	0.05	0.05	0.05
Residual liquid saturation,	0.3	0.3	0.3
van Genuchten, (kPa)	19.61	19.61	19.61
van Genuchten, (1/Pa)	0.457	0.457	0.457