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:
Jul. 21, 1976
Applicant:
Inventor:
Michael Prats, Houston, TX (US);
Assignees:
Shell Canada Limited, Toronto, CA;
Shell Explorer Limited, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166303 ; 166263 ; 166272 ;
Abstract
An improved steam soak process recovers viscous oil from a reservoir containing a relatively steam impermeable oil-rich layer above a relatively steam permeable water-rich layer. Steam is injected at a rate and volume that displaces an oil bank into the water layer. The cooling of the oil bank impedes the flow of water so that, during the production cycle, the rate of oil recovery is increased.