04532991 is referenced by 28 patents and cites 6 patents.

One or more in situ oil shale retorts are alternately operated in a combustion mode and a purge mode with a steam or water purge to produce a greater yield of shale oil. Hydrogen-rich off gases emitted during purging are mixed with the shale oil in a reactor in the presence of a catalyst, after being stripped of carbon dioxide, to produce a high quality shale oil. The reactor off gases, purge mode off gases, and/or hydrogen gases can also be used as the purge gas.

Title
Pulsed retorting with continuous shale oil upgrading
Application Number
6/592375
Publication Number
4532991
Application Date
March 22, 1984
Publication Date
August 6, 1985
Inventor
John M Forgac
Elmhurst
IL, US
George R Hoekstra
Wheaton
IL, US
Agent
William T McClain
William H Magidson
Thomas W Tolpin
Assignee
Standard Oil Company
IL, US
IPC
E21B 43/24
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