Coal Reservoir Characterization in a Tectonic Setting and the Effects of Tectonism on the Coalbed Methane (CBM) Content
Table 3
Analysis results for the specific surface area and low-temperature nitrogen adsorption.
Number
Average diameter of adsorption pore (nm)
BET specific surface area (m2·g−1)
BJH pore capacity (cm3·g−1)
The proportions of different pore sizes in %
<2 nm
2–10 nm
>10 nm
GJH3-X1
3.55269
11.76367
0.00896
54.07
38.30
7.63
GJH3-X2
4.83339
9.69391
0.00948
39.27
24.11
36.62
GJH3-B1
3.99535
11.82743
0.00475
65.40
28.31
6.29
GJH3-F1
4.12462
11.65071
0.01100
41.2
41.09
17.71
GJH3-F2
5.59499
15.68541
0.02122
30.13
37.70
32.17
GJH3-F3
4.55398
8.22590
0.00962
22.05
49.57
28.38
GJH3-F4
8.99411
2.26251
0.00569
8.32
57.42
34.26
Note: the letter X in the numbers of coal samples represents the syncline area, B represents the anticline area, and F represents the fault area. Calculated by pore volume distribution.
