04384614 is referenced by 241 patents and cites 15 patents.

Oil shale is retorted, preferably in situ, by passing velocity flow of super-heated air through one or more conduit-like passages in direct contact with exposed surfaces of oil shale. Kerogen pyrolysis products are recovered by condensation of the vapors and collection of the condensate and by collection of the gases and separation of the valuable gases from the normally waste gases. Some of the waste gases may be recycled with the air for controlling combustion of the kerogen content of the shale.

Title
Method of retorting oil shale by velocity flow of super-heated air
Application Number
6/262192
Publication Number
4384614
Application Date
May 11, 1981
Publication Date
May 24, 1983
Inventor
Clarence I Justheim
Salt Lake City
UT, US
Agent
Mallinckrodt & Mallinckrodt
Assignee
Justheim Pertroleum Company
UT, US
IPC
E21C 41/10
E21B 43/40
E21B 43/247
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