Table 3: Characteristic parameters reservoir microstructure expansion for different water immersion times (clay content 30%).

Contact time
(days) 		The average port throat radius
(µm) 		The average shape factor
(Dimensionless) 		The average pore throat ratio
(Dimensionless) 		The average coordination number
(Dimensionless)
10 0.88 0.045 2.36 2.51
30 0.85 0.041 2.32 2.37
100 0.83 0.040 2.30 2.32
300 0.83 0.040 2.30 2.32
600 0.83 0.040 2.30 2.32