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:
Jun. 23, 1992
Filed:
Dec. 08, 1989
Applicant:
Inventors:
Steve L Vasicek, Yorba Linda, CA (US);
John H Duerksen, Fullerton, CA (US);
Assignee:
Chevron Research and Technology Company, San Francisco, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166267 ; 166272 ; 166303 ;
Abstract
A method of heating produced fluid in a wellbore having multiple tubing strings. In the portion of the wellbore above the dual-string packer a portion of hot injection fluid is selectively flowed from the injection tubing string into the casing annulus where the production tubing is heated, and the flowing viscosity of fluids therein is lowered.