Multiple level methane drainage method

Details Multiple level methane drainage method Multiple level methane drainage method

1984-05-11

1986-09-16

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Tunnel recovery of fluid material

299 12, 299 19, 166 50, E21C 4110, E21B 4330

Patent

active

046118551

ABSTRACT:
A method for collecting methane gas from subterranean formations having a plurality of spaced-apart coal seams containing methane gas includes the steps of drilling a shaft from the earth's surface to a depth sufficient to intersect a plurality of seams containing gas to be collected, excavating a cruciform shaped working area at the selected seams with each of the cruciform shaped working areas communicating with the shaft, and drilling a plurality of boreholes from each of the working areas into the seams and collecting methane gas from the boreholes.

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