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    • 8. 发明授权
    • Adjustable hole cleaning device
    • 可调孔清洗装置
    • US07051821B2
    • 2006-05-30
    • US10740349
    • 2003-12-18
    • Robello Samuel
    • Robello Samuel
    • E21B7/04
    • E21B7/046E21B17/006
    • An adjustable hole cleaning device is provided for cleaning a hole in a subterranean formation. A drillstring containing the device is rotated to drill a hole through the subterranean formation. While rotating the drillstring, drilling fluid is circulated through the drillstring and the device into the hole. In response to an increase in a hydrostatic pressure of the fluid in the drillstring, cleaning elements are extended from the device to clean accumulated cuttings from the drilled hole. The cleaning elements may clean the accumulated cuttings by agitating the circulating fluid in the hole. In response to a decrease in a hydrostatic pressure of the fluid in the drillstring, the cleaning elements may be retracted back into the device. The device may also include a set of ports which hydraulically open in response to the increase of hydrostatic pressure in the drillstring to disperse drilling fluid into the hole for cleaning accumulated cuttings. The device may be deactivated by dropping an object, such as a ball, into the device to prevent the extension of the cleaning elements and the opening of the ports.
    • 提供了一种可调节的孔清洁装置,用于清洁地层中的孔。 旋转包含该装置的钻柱,以钻穿穿过该地层的孔。 在旋转钻柱时,钻井液通过钻柱和装置循环进入孔中。 响应于钻柱中的流体的静水压力的增加,清洁元件从装置延伸以清除钻孔中的累积的切屑。 清洁元件可以通过搅动孔中的循环流体来清洁累积的切屑。 响应于钻柱中流体的静水压力的降低,清洁元件可以缩回到装置中。 该装置还可以包括一组端口,其响应于钻柱中的静水压力的增加而液压打开以将钻井流体分散到孔中以清洁累积的切屑。 可以通过将诸如球的物体落入设备来禁用该装置,以防止清洁元件的延伸和端口的打开。
    • 9. 发明授权
    • Apparatus and method for adjusting power units of downhole motors
    • 井下电机功率单元调整装置及方法
    • US08899351B2
    • 2014-12-02
    • US14236057
    • 2012-07-16
    • Richard Thomas HayRobello Samuel
    • Richard Thomas HayRobello Samuel
    • E21B4/02F01C1/10F04C2/107F04C14/20
    • E21B4/02F04C2/1071F04C14/20
    • A downhole drilling motor for well drilling operations includes a tubular housing and a stator disposed in the tubular housing. The stator defines an internal cavity passing therethrough, wherein the stator includes one or more lobes defining at least a portion of the cavity. A rotor is operatively positioned in the internal cavity to cooperate with the one or more lobes of the stator. At least a portion of the stator or of the rotor comprises a memory material adapted to expand or contract when heat is applied by a localized heating module to the memory material. A fluid escape gap between the rotor and stator is adjusted by applying heat to the rotor and/or stator. At least one controller is adapted to receive input data and provide output signals increasing and/or decreasing electrical current applied to the at least one localized heating module.
    • 用于钻井操作的井下钻井电机包括管状壳体和设置在管状壳体中的定子。 定子限定穿过其中的内部空腔,其中定子包括限定空腔的至少一部分的一个或多个凸角。 转子可操作地定位在内腔中以与定子的一个或多个凸起配合。 定子或转子的至少一部分包括适于在通过局部加热模块向存储器材料施加热量时膨胀或收缩的记忆材料。 通过向转子和/或定子施加热量来调节转子和定子之间的流体逸出间隙。 至少一个控制器适于接收输入数据并提供增加和/或减小施加到至少一个局部加热模块的电流的输出信号。