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:
Oct. 29, 1991
Filed:
Jan. 02, 1990
Applicant:
Inventors:
Laurier L Schramm, Calgary, CA;
Conrad Ayasse, Calgary, CA;
Karin Mannhardt, Calgary, CA;
Jaromir Novosad, Calgary, CA;
Assignee:
Alberta Oil Sands Technology and Research Authority, Edmonton, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166252 ; 166268 ; 166273 ; 166274 ; 166275 ;
Abstract
A process is provided for enhancing the recovery of oil in a subterranean formation. The process involves injecting a surfactant-containing foam having oil-imbibing and transporting properties. A foam having such properties is selected either by determination of the lamella number or by micro-visualization techniques.