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Title: Temperature limited heaters using phase transformation of ferromagnetic material

Abstract

Systems, methods, and heaters for treating a subsurface formation are described herein. Systems and methods for making heaters are described herein. At least one heater includes a ferromagnetic conductor and an electrical conductor. The electrical conductor is electrically coupled to the ferromagnetic conductor. The heater provides a first amount of heat at a lower temperature. The heater may provide a second reduced amount of heat when the heater reaches a selected temperature, or enters a selected temperature range, at which the ferromagnetic conductor undergoes a phase transformation.

Inventors:
 [1];  [1]
  1. Oak Ridge, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1003005
Patent Number(s):
7597147
Application Number:
11/788,863
Assignee:
Shell Oil Company (Houston, TX)
Patent Classifications (CPCs):
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
B - PERFORMING OPERATIONS B32 - LAYERED PRODUCTS B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Vitek, John Michael, and Brady, Michael Patrick. Temperature limited heaters using phase transformation of ferromagnetic material. United States: N. p., 2009. Web.
Vitek, John Michael, & Brady, Michael Patrick. Temperature limited heaters using phase transformation of ferromagnetic material. United States.
Vitek, John Michael, and Brady, Michael Patrick. Tue . "Temperature limited heaters using phase transformation of ferromagnetic material". United States. https://www.osti.gov/servlets/purl/1003005.
@article{osti_1003005,
title = {Temperature limited heaters using phase transformation of ferromagnetic material},
author = {Vitek, John Michael and Brady, Michael Patrick},
abstractNote = {Systems, methods, and heaters for treating a subsurface formation are described herein. Systems and methods for making heaters are described herein. At least one heater includes a ferromagnetic conductor and an electrical conductor. The electrical conductor is electrically coupled to the ferromagnetic conductor. The heater provides a first amount of heat at a lower temperature. The heater may provide a second reduced amount of heat when the heater reaches a selected temperature, or enters a selected temperature range, at which the ferromagnetic conductor undergoes a phase transformation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {10}
}

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