Experimental Study on Adsorption Pore Structure and Gas Migration of Coal Reservoir Using Low-Field Nuclear Magnetic Resonance

Table 1

Relevant parameters of gas in coal samples under different gas pressures.

Gas pressure (MPa)	Compressibility factor	Gas quality (g)	T 2 spectral area of desorbed gas
5	0.9175	1.4876	19208.2961
4	0.9355	1.1672	15000.5546
3	0.9493	0.8627	11005.3119
2	0.9639	0.5664	7175.1711
1	0.9828	0.2778	3295.3408