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

Table 4

Knudsen number at different pressure for sample SS-3.

𝑝2=0.1 MPa		𝑝2=0.6 MPa
𝑝𝑚 (MPa)	Kn	𝑝𝑚 (MPa)	Kn
0.35	0.00376	0.85	0.00155
0.625	0.00211	1.1	0.00120
0.85	0.00155	1.35	0.00098
1.1	0.00120	1.6	0.00082
1.35	0.00098	1.85	0.00071