Effects of Borehole Arrangement on Methane Migration and Implications for High Efficiency Extraction in Intact and Tectonic Combined Coal Seams

<div>Schematic diagram of coal seam borehole layout: (a) traditional bedding boreholes in a single coal seam; (b) intact and tectonic coal sublayers; (c) bedding boreholes in combined coal seams; (d) adjusted bedding boreholes in combined coal seams.</div>

Geofluids

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Figure 1

Figure 1: Effects of Borehole Arrangement on Methane Migration and Implications for High Efficiency Extraction in Intact and Tectonic Combined Coal Seams 

Figure 1 | Effects of Borehole Arrangement on Methane Migration and Implications for High Efficiency Extraction in Intact and Tectonic Combined Coal Seams 