Experimental Study on the Characteristics of Adsorbed Gas and Gas Production in Shale Formations

Table 1

Basic physical parameters of experimental samples.

	Core number	Length (cm)	Diameter (cm)	Porosity (%)	Permeability (mD)
Shale	1	3.81	2.54	2.01	0.00032
	2	3.73	2.54	2.3	0.0011
	3-1	3.17	2.50	1.86	0.00016
	3-2	4.36	2.54	2.40	0.0002
	3-3	4.12	2.53	1.77	0.00011
	3-4	3.10	2.50	2.08	0.00026
	3-5	4.43	2.51	1.70	0.00056
Coal sample	4-1	6.11	3.81	6.82	0.039
	4-2	6.13	3.82	7.51	0.015
	4-3	6.44	3.81	6.96	0.011
	4-4	4.35	3.82	9.82	0.15
	4-5	4.93	3.81	9. 01	0.19
Tight sandstone	5-1	4.21	3.81	9.83	0.0015
	5-2	4.47	3.84	11.21	0.0048
	5-3	4.27	3.84	12.88	0.0063
	5-4	4.28	3.80	13.55	0.011
	5-5	4.34	3.81	14.42	0.016