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. 27, 1979
Filed:
Jul. 01, 1977
Applicant:
Inventors:
Ching H Wu, Golden, CO (US);
Alfred Brown, Houston, TX (US);
Daniel T Konopnicki, Houston, TX (US);
Joseph C Allen, Bellaire, TX (US);
Assignee:
Texaco Inc., New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166252 ; 166272 ; 166303 ;
Abstract
A method for recovering viscous hydrocarbons from subterranean formations involves injecting a hydrocarbon solvent into the formation at spaced intervals to produce permeable regions or streaks in the formation. The injection is preferably directed to those regions of highest oil saturation, i.e., those regions with lowest effective permeability. A subsequent introduction of a heated fluid then will enable recovery of the viscous hydrocarbons in the treated regions and the untreated zones therebetween.