Study on Reservoir Properties and Critical Depth in Deep Coal Seams in Qinshui Basin, China

Table 1

Statistics table of depth and productivity in main CBM producing wells.

Basin			Number	Depth (m)	Gas content (m^3/t)	Permeability (md)	Geostress (MPa)	T (^°C)
Qinshui Basin			001	778	11.89	0.015	11.67	26.1
			002	513.5	18.4	0.0289	7.70	18.4
			003	475	19.66	0.95	8.08	22.8
			004	588.33	13.51	0.06	9.30	25.4
			005	470		0.11	7.52	15.6
			006	570.25	16.07	0.87	7.93	23.25
			007	428.3	20.11	2	5.57	24.16
			008	531	16.4	0.088	9.56	20.44
			009	584	18.63	0.26	10.10	26.7
			010	688.73	12.76	0.026	10.12	28.8
			011	772.4	8.79	0.494		25.26
			012	746.18	20.49	4.6		25.6
			013	868.4	19.31	0.46	11.20	29.3
			013	840.4		0.9442	13.37	36.69
			014	895.29		0.034	18.44	37.5
			015	977.8	20.72	1.2	22.76
			016	1128.2	16.65	18.9	23.75
			017	1011.2	14.82	0.49	23.41
			018	967	18.84	0.19	20.67
			019	1134.9	11.76	81.3	24.33
			020	712.1	10.465	0.06	14.67	30.1
			021	733.05	5.01	0.016	12.97	28
			022	568.55	5.04	0.16	13.59	28.6
			023	871.8	5.14	1.39	19.79	35.1
			024	871.8	2.72	0.11	18.83	30.2
			025	723.7	13.03	0.11	15.99	30.06
			026	489.4	11.24	0.0285	11.07	24.572
			027	1001.45	1.15	0.18	20.73	37.9
			028	965.3	8.17	0.07	18.05	35.9
			029	577.45	7.31	0.28	12.47	28
			030	731.8	5.01	0.016	13.03	28
			031	739.5	2.11	0.02	13.31	28.2
			032	578.6	4.15	0.06	13.71	28.4
			033	883.15	3.9	0.138	20.84	35.5
			034	883.15	3.41	0.18	18.19	30.5
			035	735.2	4.9	0.06	16.84	30.71
			036	496.6	9.93	0.0374	9.34	24.717
			037	1010	3.28	0.03	19.29	37.9
			038	624.7	9.35	0.42	12.81	27.5
			039	973.3	11.58	0.21	17.13	36.8
			040	587.75	5.79	0.04	10.76	28.2
			041	738.4	2.11	0.045	13.73	28.2
			042	887.35	5.23	1.7	13.77	27.76
			043	495.1	7.9	1.43	7.08	25.35