Method of underground gasification of a coal bed

Details Method of underground gasification of a coal bed Method of underground gasification of a coal bed

E - Fixed Constructions

21

B

166/37

E21B 43/00 (2006.01) E21B 43/243 (2006.01) E21B 49/00 (2006.01)

Patent

CA 1056303

ABSTRACT OF THE DISCLOSURE To control the process of underground gasification of a coal be with due provisions for the natural geological and mining conditions, in the disclosed method the rate of gassing-out the coal bed is selected from the following expression: Image where W is the amount of water flowing into the gasification zone, m3/hour; I is the amount of coal gassed out per unit of time, tons/hour (the intensity of the process); Q? is the combustion heat of the gas, kcal/m3; Vr is the yield of gas from 1.0 kg of coal, m3; Q? is the lowest combustion heat of coal, kcal/m3; m is the thickness of the coal bed, in metres.

246072

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