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.

Date of Patent:
Oct. 14, 2014

Filed:

May. 24, 2013
Applicant:

Shell Oil Company, Houston, TX (US);

Inventors:

Francis Marion Stone, Jr., Cut-N-Shoot, TX (US);

Charles R. Goodwin, League City, TX (US);

James E. Richard, Jr., Kingwood, TX (US);

Assignee:

Shell Oil Company, Houston, TX (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 36/04 (2006.01); H01F 38/24 (2006.01); G05F 1/10 (2006.01); E21B 43/24 (2006.01);
U.S. Cl.
CPC ...
E21B 43/2401 (2013.01); G05F 1/10 (2013.01); Y10S 166/902 (2013.01); E21B 36/04 (2013.01);
Abstract

Systems, methods, and heaters for treating a subsurface formation are described herein. At least one method for providing power to one or more subsurface heaters is described herein. The method may include monitoring one or more operating parameters of the heaters, the intermittent power source, and a transformer coupled to the intermittent power source that transforms power from the intermittent power source to power with appropriate operating parameters for the heaters; and controlling the power output of the transformer so that a constant voltage is provided to the heaters regardless of the load of the heaters and the power output provided by the intermittent power source.


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