Wells – Processes – In situ combustion
Patent
1978-11-28
1980-03-11
Novosad, Stephen J.
Wells
Processes
In situ combustion
166259, 299 2, E21B 4324
Patent
active
041923812
ABSTRACT:
Liquid and gaseous products are recovered from an in situ oil shale retort containing a fragmented permeable mass of formation particles by establishing a combustion zone in the fragmented permeable mass of particles. The combustion zone is advanced through the fragmented mass of particles by introducing a retort inlet mixture comprising oxygen into the retort on the trailing side of the combustion zone. The retort inlet mixture is maintained at a sufficiently high temperature of at least 1150.degree. F. so that the temperature of at least a portion of the fragmented mass on the trailing side of the combustion zone is maintained at a temperature of at least 1150.degree. F. for increasing the yield of hydrocarbon products obtained from the retort.
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patent: 4018280 (1977-04-01), Daviduk et al.
patent: 4059152 (1977-11-01), Allen et al.
Novosad Stephen J.
Occidental Oil Shale Inc.
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