Varying properties along lengths of temperature limited heaters
    4.
    发明申请
    Varying properties along lengths of temperature limited heaters 有权
    温度限制加热器长度不同的特性

    公开(公告)号:US20070045268A1

    公开(公告)日:2007-03-01

    申请号:US11409562

    申请日:2006-04-21

    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.

    摘要翻译: 描述了用于加热地下地层的系统。 该系统包括在地层中的开口中的细长加热器。 细长加热器包括具有不同功率输出的加热器长度的两个或更多个部分。 细长加热器的至少一部分包括具有至少一个选定温度的至少一个温度限制部分,在该温度下该部分提供减少的热输出。 加热器被配置为用不同的功率输出向地层提供热量。 加热器构造成使得加热器以一个或多个选定的加热速率加热地层的一个或多个部分。