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    • 4. 发明授权
    • Enlarging well bores having tubing therein
    • 在井内扩大井口
    • US07182157B2
    • 2007-02-27
    • US11019694
    • 2004-12-21
    • Joseph A. Zupanick
    • Joseph A. Zupanick
    • E21B10/32E21B4/02
    • E21B7/28E21B10/32E21B43/006
    • An underreamer for forming a cavity within a well bore includes a fluid motor having a first body and a second body arranged about a longitudinal axis. The first body is adapted to rotate about the longitudinal axis in relation to the second body when fluid is passed between the first and second bodies. The fluid motor further defines a longitudinal tubing passage adapted to allow passage of the fluid motor over a tubing string. At least one cutting arm is coupled to rotate with the first body, and radially extendable into engagement with an interior of the well bore to form the cavity.
    • 用于在井眼内形成空腔的扩孔器包括具有围绕纵向轴线布置的第一主体和第二主体的流体马达。 当流体在第一和第二主体之间通过时,第一主体适于围绕纵向轴线相对于第二主体旋转。 流体马达还限定了适于允许流体马达在管柱上通过的纵向管道。 至少一个切割臂被联接以与第一主体一起旋转,并且径向延伸成与井眼的内部接合以形成空腔。
    • 7. 发明授权
    • Actuator underreamer
    • 执行者深呼
    • US06976547B2
    • 2005-12-20
    • US10196042
    • 2002-07-16
    • Monty H. RialJoseph A. Zupanick
    • Monty H. RialJoseph A. Zupanick
    • E21B10/32E21B7/28
    • E21B10/322
    • An underreamer for forming a cavity from within a well bore includes a housing adapted to be disposed within the well bore. The underreamer includes an actuator partially slidably positioned in the housing. The actuator comprises a first portion and a second portion. A cross-sectional area of the second portion is larger than a cross-sectional area of the first portion. The underreamer includes at least one cutter set, wherein each cutter set has a first end and a second end. The first end of each cutter set is pivotally coupled to the housing. The second end of each cutter set is pivotally coupled to a connector. An axial force applied to the actuator is operable to slide the actuator relative to the housing causing the second portion of the actuator to contact each cutter set and extend each cutter set radially outward relative to the housing from a retracted position to a first position. The actuator may also include a stop member proximate an end of the actuator. The stop member may be operable to force the connector to slide relative to the housing during the application of the axial force, causing each cutter set to further extend radially outward relative to the housing from the first position to a second position.
    • 用于从井内形成空腔的扩孔器包括适于设置在井眼内的壳体。 该扩孔器包括致动器,其部分地可滑动地定位在壳体中。 致动器包括第一部分和第二部分。 第二部分的横截面积大于第一部分的横截面面积。 所述扩孔器包括至少一个切割器组,其中每个切割器组具有第一端和第二端。 每个切割器组的第一端枢转地联接到壳体。 每个切割器组的第二端枢转地联接到连接器。 施加到致动器的轴向力可操作以相对于壳体滑动致动器,致使致动器的第二部分接触每个切割器组,并且将每个切割器组相对于壳体从缩回位置径向向外延伸到第一位置。 致动器还可以包括靠近致动器的端部的止动构件。 止动构件可以可操作地在施加轴向力期间迫使连接器相对于壳体滑动,使得每个切割器组进一步相对于壳体从第一位置向第二位置径向向外延伸。