Characteristics of In Situ Stress and Reservoir Pressure in Deep Coal Seams and Their Influences on Reservoir Depletion: A Field Case Study

Table 3

Initial gas content and adsorption isothermal parameters of DCBM reservoirs.

Well number	Target coal seam	Depth (m)	(MPa)	(m^3/t)	(MPa)	(m^3/t)	(MPa)	(%)	DCI; (MPa)	References
X-1	No. 8	1396.0	13.22	28.29	1.94	8.70	0.86	35.0	12.36
X-2	No. 8 and 9	1767.6	16.70	30.30	1.96	15.58	1.08	57.1	14.63
X-3	No. 3 and 4	1698.0	16.20	24.78	2.02	6.93	0.78	31.5	15.42
X-4	No. 8	2047.5	18.14	24.31	2.51	15.00	4.04	70.2	14.10	[33]
X-5	No. 8 and 9	2063.0	18.28	22.02	3.37	17.56	13.27	94.4	5.01	[33]
X-6	No. 9	2064.6	18.29	22.78	2.42	18.08	9.31	89.7	8.98	[33]
X-7	No. 8 and 9	1974.6	17.49	12.46	2.32	12.62	17.49	114.7	0	[33]
X-8	No. 8 and 9	1840.4	16.30	15.60	2.14	10.19	4.03	73.9	12.27	[33]
X-9	No. 8 and 9	1872.4	17.8	26.00	4.70	8.6	2.32	41.8	15.48	[26]
X-10	No. 8 and 9	1996.7	17.8	22.06	4.18	10.93	4.10	61.1	13.70	[26]

Symbols: is the initial reservoir pressure, MPa; is the Langmuir volume, m³/t; is the Langmuir pressure, MPa; is the initial gas content, m³/t; is the critical desorption pressure, MPa; is the gas saturation, %.