Pore Structure and Limit Pressure of Gas Slippage Effect in Tight Sandstone

Table 1

Basic parameters of core samples.

Samples	L (mm)	D (mm)	Φ (%)	𝐾𝑎 (10^−3𝜇m^2)
SS-1	57.30	25.10	15.13	0.05
SS-2	77.66	25.02	6.689	0.074
SS-3	59.71	24.74	5.895	0.150
SS-4	63.95	24.73	1.106	0.226
SS-5	59.05	24.76	5.647	0.507
SS-6	62.85	24.73	10.099	1.090
SS-7	59.17	24.59	12.461	1.320