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    • 9. 发明申请
    • Temperature limited heater with a conduit substantially electrically isolated from the formation
    • 温度限制加热器具有与地层基本上电隔离的导管
    • US20080017370A1
    • 2008-01-24
    • US11585302
    • 2006-10-20
    • Harold VinegarChester Sandberg
    • Harold VinegarChester Sandberg
    • E21B43/00
    • E21B43/24C10G1/002C10G1/02C10G9/24C10G2300/308E21B43/2401E21B43/281E21B43/34
    • A system for heating a hydrocarbon containing formation is described. A conduit may be located in an opening in the formation. The conduit includes ferromagnetic material. An electrical conductor is positioned inside the conduit, and is electrically coupled to the conduit at or near an end portion of the conduit so that the electrical conductor and the conduit are electrically coupled in series. Electrical current flows in the electrical conductor in a substantially opposite direction to electrical current flow in the conduit during application of electrical current to the system. The flow of electrons is substantially confined to the inside of the conduit by the electromagnetic field generated from electrical current flow in the electrical conductor so that the outside surface of the conduit is at or near substantially zero potential at 25° C. The conduit may generate heat and heat the formation during application of electrical current.
    • 描述了用于加热含烃地层的系统。 导管可以位于地层中的开口中。 导管包括铁磁材料。 电导体定位在导管内部,并且在导管的端部处或附近电连接到导管,使得电导体和导管电串联连接。 在向系统施加电流时,电流在电导体中以与导管中的电流流动基本相反的方向流动。 电子的流动通过由电导体中的电流流动产生的电磁场基本上限制在导管的内部,使得导管的外表面在25℃处于或接近基本为零电位。导管可以产生 在施加电流期间加热和加热地层。