Indicating ball catcher
    1.
    发明授权
    Indicating ball catcher 失效
    指示球捕手

    公开(公告)号:US5127472A

    公开(公告)日:1992-07-07

    申请号:US737073

    申请日:1991-07-29

    摘要: An indicating ball catcher for use in a downhole drill pipe or tool string. The ball catcher comprises an upper body portion having an inlet opening smaller than any ball pumped thereto and a lower body portion. An elongated case interconnects the upper and lower body portions. A bypass is provided for allowing fluid flow around any ball caught in the apparatus and preventing the ball from being pumped therefrom. A reverse bypass may be provided so that fluid back flow is allowed without pumping the balls therefrom. In one embodiment, the apparatus can accommodate balls which have a larger cross-sectional area than an inner cross-sectional area of the case. The apparatus provides pressure indications at the surface when a ball reaches the upper body portion and when the ball enters the case.

    摘要翻译: 用于井下钻杆或工具串的指示球捕手。 球捕获器包括具有小于被泵送到其上的任何球的入口开口的下主体部分和下主体部分。 细长壳体将上部和下部主体部分互连。 提供了一种旁路,用于允许流体在捕获在设备中的任何球体周围流动,并防止球被泵送。 可以提供反向旁路,使得允许流体回流而不从其中泵送球。 在一个实施例中,该装置可以容纳具有比壳体的内横截面积更大的横截面面积的球。 当球到达上身部分时以及当球进入壳体时,该装置在表面提供压力指示。