04108760 is referenced by 72 patents and cites 9 patents.

This invention relates to the extraction of oil shales and tar sands by using a solvent under supercritical conditions at a temperature within 200.degree. C. or its critical temperature in order to effect extraction of kerogen from the sand or shale.

In the case of shales considerable heat needs to be applied to the shale before effective extraction can occur and extraction in this case may be carried out at a temperature within the range of 370.degree. to 450.degree. C.

Title
Extraction of oil shales and tar sands
Application Number
5/598653
Publication Number
4108760
Application Date
July 24, 1975
Publication Date
August 22, 1978
Inventor
Terence Geoffrey Martin
Winchcombe
GB
Derek Farnham Williams
London
GB
Agent
Stevens Davis Miller & Mosher
Assignee
Coal
GB
IPC
C10G 1/04
View Original Source