Wells – Processes – In situ combustion
Patent
1976-11-01
1978-08-29
Novosad, Stephen J.
Wells
Processes
In situ combustion
166259, 166266, 166267, 166302, 299 2, E21B 4324
Patent
active
041097181
ABSTRACT:
A technique is described for breaking the very strong emulsion of shale oil and water produced by an in situ oil shale retorting process so that separate shale oil and water phases can be recovered. The emulsion is broken by heating it to a temperature of at least about 120.degree. F. and holding at a temperature in the range of from about 120.degree. to 180.degree. F. for about one day. Preferably the shale oil and water are held in the range of from about 130.degree. to 150.degree. F. for about one day and the phases separated by gravity. Heat for the process can be obtained by injecting water into a spent in situ oil shale retort for generating steam and transferring heat from the steam to the emulsion.
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Uren, L. C., Petroleum Production Engineering-Oil Field Exploitation, Third Edition, 1953, pp. 573-575.
Novosad Stephen J.
Occidental Oil Shale Inc.
Suchfield George A.
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