Multiscale Fracturing in Medium- to Low-Rank Coals and Its Implications on Coalbed Methane Production in the Baode Area, Eastern Ordos Basin, China

Table 1

Maceral composition of coal in the Baode area in the eastern Ordos Basin of China.

Sample No.	(%)	(%)	VD (%)	(%)	Sf (%)	ID (%)	(%)	(%)
BD1	0.13	0.4	0.11	0.64	0.15	0.16	0.31	0.05
BD2	0.52	0.42	0.01	0.95	0.02	0.03	0.05	0.01
BD4	0.17	0.57	0.03	0.77	0.19	0.04	0.23	0
BD7	0.26	0.42	0.05	0.73	0.19	0.07	0.26	0.01
BD8	0.41	0.53	0.01	0.95	0.03	0.01	0.04	0
BD9	0.38	0.33	0.04	0.76	0.14	0.1	0.24	0
BD10	0.34	0.58	0.02	0.94	0.04	0.02	0.06	0.01
BD11	0.29	0.5	0.07	0.86	0.07	0.06	0.13	0
BD12	0.64	0.24	0.03	0.90	0.06	0.03	0.09	0.01
BD14	0.24	0.31	0.16	0.71	0.10	0.16	0.26	0.03

: telovitrinite; : gelovitrinite; VD: vitrodetrinite; : vitrinite; Sf: semifusinite; ID: inertodetrinite; : inertinite; : exinite.