Table 2: Reservoir microstructure under different stress characteristic parameters

Effective stress changes ΔP (MPa) Average pore throat radius (μm) Average shape factor (Dimensionless) Average pore throat ratio (Dimensionless) Average coordination number (Dimensionless)
2 0.88 0.058 2.54 3.06
5 0.83 0.054 2.50 2.93
8 0.80 0.050 2.46 2.81
10 0.74 0.044 2.39 2.60
15 0.64 0.033 2.28 2.24
20 0.50 0.016 2.13 1.79