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    • 95. 发明授权
    • Heater well method and apparatus
    • 加热井方法和装置
    • US6056057A
    • 2000-05-02
    • US950480
    • 1997-10-15
    • Harold J. VinegarThomas MikusJohn Michael KaranikasScott Lee Wellington
    • Harold J. VinegarThomas MikusJohn Michael KaranikasScott Lee Wellington
    • E21B36/02E21B43/24
    • E21B36/025E21B43/24
    • A method and apparatus is disclosed for heating of formations using fired heaters. Each fired heater may consist of two concentric tubulars emplaced in the formation, connected via a wellhead to a burner at the surface. Combustion gases from the burner go down to the bottom of the inner tubular and return to the surface in the annular space between the two tubulars. The two tubulars may be insulated in an overburden zone where heating is not desired. A plurality of fired heaters can be connected together such that the combustion gases from a first fired heater well are piped through insulated interconnect piping to become the air inlet for a second fired heater well, which also has a burner at its wellhead. This can be repeated for other heater wells, until the oxygen content of the combustion gas is reduced near zero. The combustion gas from the last fired heater well may be routed through a heat exchanger in which the fresh inlet air for the first heater well is preheated. A substantially uniform temperature is maintained in each heater well by using a high mass flow into the heater well.
    • 公开了一种使用燃烧式加热器加热地层的方法和装置。 每个燃烧的加热器可以由位于地层中的两个同心管组成,通过井口连接到地面上的燃烧器。 来自燃烧器的燃烧气体向下流到内管的底部并返回到两个管之间的环形空间中的表面。 两个管状体可以在不需要加热的上覆层区域中绝缘。 多个燃烧式加热器可以连接在一起,使得来自第一燃烧加热器井的燃烧气体通过绝缘互连管道被管道,以成为第二个燃烧加热器井的空气入口,该第二燃烧加热器井在其井口处也具有燃烧器。 这可以重复用于其他加热井,直到燃烧气体的氧含量降低到接近零。 来自最后一个燃烧的加热井的燃烧气体可以通过热交换器,其中用于第一加热器井的新鲜入口空气被预热。 通过使用高质量流入加热器井,在每个加热器井中保持基本均匀的温度。