发明申请
- 专利标题： Varying properties along lengths of temperature limited heaters
- 专利标题（中）： 温度限制加热器长度不同的特性
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申请号： US11409562申请日： 2006-04-21
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公开(公告)号： US20070045268A1公开(公告)日： 2007-03-01
- 发明人: Harold Vinegar , Xueying Xie , David Miller , Jean-Charles Ginestra
- 申请人： Harold Vinegar , Xueying Xie , David Miller , Jean-Charles Ginestra
- 主分类号： B60L1/02
- IPC分类号： B60L1/02
摘要：
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.
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