The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 27, 1977
Filed:
Nov. 15, 1976
David A Hill, Hermosa Beach, CA (US);
Durk J Pearson, Palos Verdes Estates, CA (US);
Ethelyn P Motley, Rancho Palos Verdes, CA (US);
Thomas N Beard, Denver, CO (US);
James L Farrell, Palos Verdes Estates, CA (US);
TRW Inc., Redondo Beach, CA (US);
Abstract
A process for the in-situ recovery of hydrocarbon, carbon monoxide, and hydrogen values and associated minerals from subsurface oil shale deposits is provided by forming a gas-tight retort chamber and injecting it with a hot, pressurized gas followed by a solvent extraction and finally a combustion of the hydrocarbon residue. In order to conduct the process, the shale formation must be beneath a gas impermeable geological structure which will form a gas-tight chamber upon leaching of the water soluble minerals.