Characterization of Coal Reservoirs in Two Major Coal Fields in Northern China: Implications for Coalbed Methane Development

Table 1

Macro-micro characteristics and different metamorphic-deformational types of coal samples.

Sample	Location	Strata	Coal seams	𝑅𝑜/%	Metamorphism	Deformation	Coal type	Characterization	Type
HZM08	Haizi(HC)	Lower Shihezi	8	2.62			WSC	Wrinkle structure, soft coal body; Directionally arranged matrix	I
HZM10	Haizi(HC)	Lower Shihezi	8	2.62		Comparatively	WSC
LHM05	Linhuan(HC)	Lower Shihezi	9	3.01		strong-strong	SSC	Scaling structure, matrix rotated
HZ07^*	Haizi(HC)	Lower Shihezi	8	2.81	High		MSC	Wrinkle structure, flowing structure
LMF01	Laomufeng(QB)	Shanxi	3	2.82			CSC	Tension fractures, shear fracture; tension-shear fractures developed	II
WTP01	Wangtaipu(QB)	Shanxi	3	4.66		Comparatively	MS
SH02	Sihe(QB)	Shanxi	3	2.93		weak-weak	MS
CZ01	Chengzhuang(QB)	Shanxi	3	3.18			GSC
LHM10	Linhuan(HC)	Lower Shihezi	9	1.39			SSC	Scaling structure; Soft coal body	III
LHM04	Linhuan(HC)	Lower Shihezi	9	1.40		Comparatively strong	WSC	Wrinkle structure, obvious; flowing structures-C structural fabric
STM03	Shitai(H)	Lower Shihezi	3	1.50			WSC
LHM09	Linhuan(HC)	Lower Shihezi	9	1.39	Medium		WSC
QX01	Qinxin(QB)	Lower Shihezi	3	1.72			CSC	Cleats developed, tension fracture,; shear fracture, tension-shear fracture	IV
HDG01	Huangdangou(QB)	Lower Shihezi	3	1.85		Comparatively weak	MC
HZM02	Haizi(HC)	Shanxi	10	1.93			MC
ZC01	Zhangcun(QB)	Shanxi	3	1.72			SC	Fracture developed
LLM05	Luling(HC)	Lower Shihezi	8	0.86			MSC	Wrinkle structure, flowing; structure, directionally arranged; matrix	V
QN09^*	Qinan(HC)	Shanxi	10	0.81	Low	Strong	MSC
QN15^*	Qinan(HC)	Shanxi	10	0.98			MSC

CSC: cataclastic structure coal, MC: mortar structure coal, GSC: granulitic structure coal, SC: schistose structure coal, SSC: scaling structure coal, WSC: wrinkle structure coal, MSC: mylonitic structural coal.
Location with “HC” represents a coal mine in Huaibei Coalfield, location with “QB” represents a coal mine in Qinshui Basin.