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:
Jul. 26, 2011
Filed:
Apr. 21, 2006
Harold J. Vinegar, Bellaire, TX (US);
Xueying Xie, Houston, TX (US);
David Scott Miller, Katy, TX (US);
Jean Charles Ginestra, Richmond, TX (US);
Harold J. Vinegar, Bellaire, TX (US);
Xueying Xie, Houston, TX (US);
David Scott Miller, Katy, TX (US);
Jean Charles Ginestra, Richmond, TX (US);
Shell Oil Company, Houston, TX (US);
Abstract
A system for heating a subsurface formation is described. The system includes an elongated heater in an opening in the formation. The elongated heater includes two or more portions along the length of the heater that have different power outputs. At least one portion of the elongated heater includes at least one temperature limited portion with at least one selected temperature at which the portion provides a reduced heat output. The heater is configured to provide heat to the formation with the different power outputs. The heater is configured so that the heater heats one or more portions of the formation at one or more selected heating rates.