Mechanism of Permeability Evolution for Reservoir Sandstone with Different Physical Properties

Table 1

Loading conditions and parameters of sandstones without mud.

Loading conditions	Diameter; (mm)	Height; (mm)	Mass; (g)	(km/s)
C3P0	49.82	100.20	449.00	2.326
C3P2	49.80	100.08	448.30	2.324
C6P2	49.80	99.90	448.50	2.196
C6P3	49.82	100.04	448.70	2.252
C6P4	49.80	99.84	448.90	2.274
C9P2	49.82	100.10	449.10	2.326
C9P6	49.82	100.00	450.10	2.328
C15P2	49.80	100.12	446.60	2.275
C15P3	49.82	99.96	449.70	2.286
C15P4	49.82	99.88	451.80	2.320