Producing thin seams of coal in situ

Details Producing thin seams of coal in situ Producing thin seams of coal in situ

1976-03-08

1977-03-08

Novosad, Stephen J.

Wells

Processes

In situ combustion

166272, 48210, 48DIG6, E21B 4324

Patent

active

040108007

ABSTRACT:
A method of extracting energy and chemical values from coal in situ including the steps of establishing passages among two or more coal seams underground and the surface of the ground wherein one coal seam is consumed by in situ combustion with the hot exit gases diverted through a second seam of coal enroute to the surface. The second seam of coal is dewatered, then subjected to pyrolysis, with enriched exit gases captured at the surface.

REFERENCES:
patent: 2584605 (1952-02-01), Merriam et al.
patent: 3072187 (1963-01-01), Carr
patent: 3163215 (1964-12-01), Stratton
patent: 3548938 (1970-12-01), Parker
patent: 3599714 (1969-09-01), Messman et al.
patent: 3661423 (1972-05-01), Garret
patent: 3809159 (1974-05-01), Young et al.
patent: 3924680 (1975-12-01), Terry
patent: 3952802 (1976-04-01), Terry

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