Wells – Processes – In situ combustion
Patent
1976-09-07
1978-05-30
Novosad, Stephen J.
Wells
Processes
In situ combustion
166281, 166303, E21B 4324, E21B 4326
Patent
active
040918696
ABSTRACT:
A method is disclosed for recovering carbonaceous material from a subterranean deposit such as oil shale. A first zone of the subterranean deposit is heated to liquefy and vaporize carbonaceous materials contained therein. A substantial portion of the carbonaceous materials are removed from this first zone. Thereafter a second zone of the deposit is rubblized such that material of the second zone occupies a portion of the space occupied by the first zone. The second zone is then heated and carbonaceous materials are removed therefrom.
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Exxon Production Research Company
Lawson Gary D.
Nametz Michael A.
Novosad Stephen J.
Suchfield George A.
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