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:
Mar. 06, 1984
Filed:
Jun. 15, 1982
Applicant:
Inventors:
Herman Wissenberg, Wheatland Township, Willa County, IL (US);
Earl D York, Englewood, CO (US);
Darrell D Porter, Englewood, CO (US);
Assignees:
Standard Oil Company (Indiana), Chicago, IL (US);
Gulf Oil Corp., Chicago, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21C / ;
U.S. Cl.
CPC ...
299-2 ; 166259 ;
Abstract
An in situ retort and process are provided for underground retorting of oil shale. The in situ retort is formed with at least one flame front-stabilizing layer of minute lean oil shale particles which serves as a redistribution region or grid. When the flame front is ignited and passed through the retort with a feed gas, the flame front-stabilizing layer will stabilize and enhance horizontal uniformity of the flame front to substantially minimize burning of the product shale oil.