Table 2.

Basic parameters of core samples.

Samples	K a (10−3 μm2)	Φ (%)	R 35 (μm)	p d (MPa)	p limit (MPa)	Relationships between 1/p m and K a for samples	b	K a range (%)
SS-1	0.05	15.130	0.023	1.8	1.42	y = 0.0001x + 0.0032 = 0.0032(1 + 0.031x)	0.031	1.83
SS-2	0.074	6.689	0.226	2.38	0.9	y = 0.0002x + 0.0231 = 0.0231(1 + 0.008x)	0.008	0.62
SS-3	0.150	5.895	0.382	2.15	0.6	y = 0.0004x + 0.0382 = 0.0382(1 + 0.010x)	0.010	0.64
SS-4	0.226	1.106	2.061	1.47	0.5	y = 0.0006x + 0.0771 = 0.0771(1 + 0.008x)	0.008	0.60
SS-5	0.507	5.647	0.811	0.912	0.45	y = 0.0007x + 0.1534 = 0.1534(1 + 0.005x)	0.005	2.50
SS-6	1.090	10.099	0.769	0.85	0.4	y = 0.0019x + 0.4162 = 0.4162(1 + 0.005x)	0.005	0.45
SS-7	1.320	12.461	0.718	0.62	0.35	y = 0.0108x + 0.7911 = 0.7911(1 + 0.013x)	0.013	2.06

R ₃₅: mean pore throat radius; p _d: displacement pressure; p _limit: limit pressure.