DOWNHOLE MOTOR ASSEMBLY WITH TORQUE REGULATION
    8.
    发明公开
    DOWNHOLE MOTOR ASSEMBLY WITH TORQUE REGULATION 审中-公开
    BOHRLOCHMOTORBAUGRUPPE MITDRÉHMOMENTREGULIERUNG

    公开(公告)号:EP2198109A4

    公开(公告)日:2013-05-15

    申请号:EP08836882

    申请日:2008-10-01

    IPC分类号: E21B4/02

    摘要: A downhole motor assembly for driving a drill bit. The assembly includes a hydraulic drive section with a stator and a rotor located inside the stator to form a flow path between the stator and the rotor. Fluid flowing through the flow path in response to a pressure differential across the hydraulic drive section creates an operative force to rotate the drill bit. The assembly also includes a regulation mechanism that includes a valve and a fluid flow diversion bore for diverting at least some fluid from the flow path when the pressure differential across the hydraulic drive section is greater than or equal to a transition pressure differential.

    摘要翻译: 用于驱动钻头的井下电机组件。 组件包括具有定子和位于定子内部的转子的液压驱动部分,以在定子和转子之间形成流动路径。 响应于液压驱动部分上的压差而流过流路的流体产生旋转钻头的操作力。 组件还包括调节机构,其包括阀和流体分流孔,用于当液压驱动部分上的压力差大于或等于过渡压差时,用于从流动路径转移至少一些流体。