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:
May. 23, 2017
Filed:
Apr. 03, 2014
Shell Oil Company, Houston, TX (US);
Justin Michael Noel, The Woodlands, TX (US);
Robert Anthony Shaffer, Cypress, TX (US);
Edward Everett de St. Remey, Katy, TX (US);
Gilbert Luis Herrera, Cypress, TX (US);
Trevor Alexander Craney, Katy, TX (US);
Robert Guy Harley, Spring, TX (US);
Dhruv Arora, Houston, TX (US);
David Booth Burns, Houston, TX (US);
SHELL OIL COMPANY, Houston, TX (US);
Abstract
A method for forming an insulated conductor heater includes placing an insulation layer over at least part of an elongated, cylindrical inner electrical conductor, placing an elongated, cylindrical outer electrical conductor over at least part of the insulation layer to form the insulated conductor heater; and performing one or more cold working/heat treating steps on the insulated conductor heater, reducing the cross-sectional area of the insulated conductor heater by at most about 20% to a final cross-sectional area. The cold working/heat treating steps include cold working the insulated conductor heater to reduce a cross-sectional area of the insulated conductor heater; and heat treating the insulated conductor heater at a temperature of at least about 870° C. The insulation layer includes one or more blocks of insulation.