Chemistry: physical processes – Physical processes – Crystallization
Patent
1977-10-19
1979-09-04
Marcus, Michael S.
Chemistry: physical processes
Physical processes
Crystallization
23230PC, 23926, 299 1, 422 62, G01N 3112, G01N 3322, G01N 3328
Patent
active
041667212
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 contains a constituent which is formed, by advancement of the processing zone through the fragmented mass, from a precursor contained in the formation. To determine the locus of the processing zone, formation is assayed at selected locations in the retort for content of the precursor before processing the selected locations, and effluent gas from the retort is monitored for concentration of the selected constituent.
For example, kerogen can be the precursor and effluent gas from the retort can be monitored for the concentration of methane produced by retorting of kerogen in the oil shale.
REFERENCES:
patent: 2772951 (1956-12-01), Bond
patent: 3446597 (1969-05-01), Bray et al.
patent: 3454365 (1969-07-01), Lumpkin et al.
patent: 3740641 (1973-06-01), Hwang et al.
patent: 3975157 (1976-08-01), Smith
patent: 4076312 (1978-02-01), Cha et al.
Marcus Michael S.
Occidental Oil Shale Inc.
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