Induction heating of coal in situ

Details Induction heating of coal in situ Induction heating of coal in situ

E - Fixed Constructions

21

B

327/21, 166/38

E21B 43/24 (2006.01) E21C 37/16 (2006.01) E21C 37/18 (2006.01)

Patent

CA 1072006

ABSTRACT The electric induction heating in situ of a selected portion of an underground coal deposit, for the purpose of facilitating extraction of gases, liquids, solids and energy from the deposit. The heating is conveniently effected by passing a time-varying electrical current through a conductor encompassing the selected portion. The conductive path is preferably a toroid, quasi-toroid, helix, or simulated toroid, quasi-toroid or helix, created by a drilling and passing one or more conductors through the drill holes.

257331

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