A Method to Evaluated Gas Content with Coalbed Methane Reservoir Based on Adsorption Theory and Production Analysis

Table 3

Critical desorption pressure and bottom hole pressure at begin of gas flow.

Well name	Critical pressure (MPa)	BHP when gas is seen (MPa)
SZN16	1.63	1.25
SZS01	0.93	0.71
SZS03	1.63	1.08
SZS04	0.69	0.61
SZS06	1.21	0.98
SZS11	2.30	1.66
SZS13	0.91	0.52
SZS17	1.90	1.50
SZS20	0.31	0.21