Invention Grant
- Patent Title: Varying properties along lengths of temperature limited heaters
- Patent Title (中): 温度限制加热器长度不同的特性
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Application No.: US11409562Application Date: 2006-04-21
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Publication No.: US07986869B2Publication Date: 2011-07-26
- Inventor: Harold J. Vinegar , Xueying Xie , David Scott Miller , Jean Charles Ginestra
- Applicant: Harold J. Vinegar , Xueying Xie , David Scott Miller , Jean Charles Ginestra
- Applicant Address: US TX Houston
- Assignee: Shell Oil Company
- Current Assignee: Shell Oil Company
- Current Assignee Address: US TX Houston
- Main IPC: H05B3/02
- IPC: H05B3/02
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.
Public/Granted literature
- US20070045268A1 Varying properties along lengths of temperature limited heaters Public/Granted day:2007-03-01
Information query
