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:
Jan. 27, 2015
Filed:
Apr. 08, 2011
Applicants:
Edward Everett DE St. Remey, Katy, TX (US);
Valerio Giuliani, Calgary, CA;
Christopher Kelvin Harris, Calgary, CA;
Inventors:
Edward Everett De St. Remey, Katy, TX (US);
Valerio Giuliani, Calgary, CA;
Christopher Kelvin Harris, Calgary, CA;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 43/24 (2006.01);
U.S. Cl.
CPC ...
E21B 43/2401 (2013.01);
Abstract
A heater used to heat a subsurface formation includes an electrical conductor, a semiconductor layer at least partially surrounding the electrical conductor, an insulation layer at least partially surrounding the electrical conductor, an electrically conductive sheath at least partially surrounding the insulation layer. The heater may be located in an opening in the subsurface formation.