Table 2 Statistical table of coal seam gas content in W1 and W2 mines.

From: The geological factors affecting gas content and permeability of coal seam and reservoir characteristics in Wenjiaba block, Guizhou province

Coal seam

Gaseous composition

Gas content ad m3/t

N2 (%)

AverageCO2 (%)

CH4 + C2H6 (%)

16

3.55

1.29

84.21–99.87

12.03–17.52

27

4.37

0–8.01

84.16–100

8.12–19.56

30

2.74

0–8.59

87.64–99.85

10.63–19.83

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