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:
Jan. 09, 1979
Filed:
Sep. 28, 1977
Applicant:
Inventors:
Phillip J Cram, Calgary, CA;
Roman A Pachovsky, Calgary, CA;
Assignee:
Texaco Canada Inc., Calgary, CA;
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166263 ; 166261 ; 166272 ; 166274 ;
Abstract
A method for the in-situ recovery of low API gravity oils or bitumen from subterranean hydrocarbon-bearing formations wherein the recovery is optimized by the injection of a mixture of an oxygen-containing gas and steam until the recovery efficiency declines, followed by the injection of a mixture of light hydrocarbon and steam, under operating conditions that may utilize pressurization and drawdown cycles.