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:
Feb. 03, 1987
Filed:
Nov. 12, 1985
Declan B Livesey, Calgary, CA;
Petre Toma, Edmonton, CA;
Texaco Canada Resources Ltd., Calgary, CA;
Abstract
Method and apparatus for extracting a viscous hydrocarbon from a productive substrate which is characterized by amounts of unconsolidated sand particles. A hot, thermal stimulating medium is introduced at an elevated pressure to the productive substrate through the remote end of an elongated well liner. As the hydrocarbon becomes mobile it is urged to the lower pressured segment of the liner. An expandable diverter, pervious to the stimulating medium, is positioned in the liner to form a quasi-barrier. Said barrier is progressively lengthened to cause the stimulating medium to penetrate progressively increasing lengths of the productive substrate to assure extraction of hydrocarbon along the entire liner length.