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:
Apr. 27, 2021
Filed:
Feb. 28, 2018
Applicant:
Trs Group, Inc., Longview, WA (US);
Inventors:
Jacob Seeman, Reno, NV (US);
Daniel Oberle, Sylvania, OH (US);
Assignee:
TRS Group, Inc., Longview, WA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B 36/04 (2006.01); B09C 1/06 (2006.01);
U.S. Cl.
CPC ...
B09C 1/062 (2013.01); E21B 36/04 (2013.01);
Abstract
A combination subsurface heating system that incorporates electrical resistance heating and thermal conduction heating with systems disposed within a single borehole. The combination heating system includes an electrically conductive outermost well casing and a heating element that is electrically isolated from the casing but disposed within it or in an adjacent casing but within the same borehole. Each of the two heating components is powered by a separate power source.