Temperature limited heaters using phase transformation of ferromagnetic material
Patent
·
OSTI ID:1003005
- Oak Ridge, TN
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.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-00OR22725
- Assignee:
- Shell Oil Company (Houston, TX)
- Patent Number(s):
- 7,597,147
- Application Number:
- 11/788,863
- OSTI ID:
- 1003005
- Country of Publication:
- United States
- Language:
- English
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