Determining the locus of a processing zone in an oil shale retor

Details Determining the locus of a processing zone in an oil shale retor Determining the locus of a processing zone in an oil shale retor

1979-10-22

1981-07-21

Leppink, James A.

Wells

Processes

With indicating, testing, measuring or locating

166254, 299 2, E21B 43247, E21B 4700, E21C 4110

Patent

active

042793025

ABSTRACT:
A processing zone advances through a fragmented permeable mass of particles containing oil shale in an in situ oil shale retort in a subterranean formation containing oil shale. The retort has an effluent gas passing therefrom. The effluent gas has a heating value which is dependent on the kerogen content of the oil shale then in contact with the processing zone. To determine the locus of the processing zone, the formation is assayed at selected locations in the retort for kerogen content before processing the selected locations, and effluent gas from the retort is monitored for its heating value.

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patent: 4162706 (1979-07-01), Cha
van Poollen, "Transient Tests Find Fire Front in an In Situ Combustion Project," Oil and Gas Journal, vol. 63, No. 5, Feb. 1, 1965, pp. 78-80.
Burwell et al., "Usable Gas from Oil Shale During Retorting," Bureau of Mines Oil Shale Program Technical Progress Report 85, Nov. 1974.
Lenhart, "TOSCO Process Shale Oil Yields," AIME 97th Annual Meeting, Feb. 27, 1968.

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