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

Table 2

Analytical results for different metamorphic deformational coal samples by mercury-injecting testing.

No.	Sample	Type	Mercury ejection efficiency/%	Porosity/%	Pore distribution and content
					<10^2 nm/%	10^2–10^3 nm/%	>10^3 nm/%
1	HZM08	I	38.3	9.2	76.9	14.0	9.1
2	HZM10		53.9	6.9	82.8	10.2	7.0
3	LHM05		51.6	3.0	80.0	11.7	8.3
4	HZ07^*		—	10.2	94.9	5.1	0
5	LMF01	II	68.7	2.7	78.8	7.7	13.5
6	WTP01		58.0	7.2	90.0	3.5	6.5
7	SH02		70.0	2.5	70.5	5.9	23.6
8	CZ01		75.0	1.9	94.2	2.6	3.2
9	LHM10	III	59.0	2.2	69.9	11.9	18.2
10	LHM04		44.8	2.7	72.0	11.5	16.5
11	STM03		52.4	2.2	55.8	2.7	30.5
12	LHM09		29.9	4.9	60.5	15.5	34.0
13	QX01	IV	66.5	2.7	76.3	10.2	13.5
14	HDG01		48.9	4.6	77.7	6.5	15.8
15	HZM02		49.8	2.5	69.0	13.0	18.0
16	ZC01		49.9	7.1	63.6	9.6	26.8
17	LLM05	V	32.6	9.0	45.6	30.7	23.7
18	QN09^*		—	4.0	40	51.9	8.1
19	QN15^*		—	3.8	54	39.4	6.6

Note: data with ^* after Ju [1].