Annular electrical contact apparatus for use in drill stem testing
    3.
    发明授权
    Annular electrical contact apparatus for use in drill stem testing 失效
    用于钻杆测试的环形电气接触装置

    公开(公告)号:US4541481A

    公开(公告)日:1985-09-17

    申请号:US549527

    申请日:1983-11-04

    摘要: In accordance with an illustrative embodiment of the present invention, a full bore drill stem testing system includes a tubular housing suspended in a well on a pipe string and having an open bore therethrough. An annular electrical contact sleeve is mounted on the wall of the housing surrounding the bore. A running tool that is lowered into the pipe string on electrical wireline includes inner and outer body members, with the outer body member carrying latch dogs that engage a shoulder in the housing to stop downward movement in a predetermined position. The inner body member carries a normally retracted annular elastomer element that has an electrical contact means on its outer periphery, and expander means responsive to upward movement of said inner body member relative to said outer body member is operable to expand the elastomer element to cause the contact means to engage the contact sleeve and enable drill stem test data to be transmitted to the surface via the electric wireline.

    摘要翻译: 根据本发明的说明性实施例,全钻孔钻杆测试系统包括悬挂在管柱上的井中并具有穿过其中的开孔的管状壳体。 环形电接触套筒安装在围绕孔的壳体的壁上。 下降到电线上的管柱中的行进工具包括内部和外部本体构件,外部本体构件承载与壳体中的肩部接合的闩锁,以在预定位置停止向下移动。 内部本体构件承载正常缩回的环形弹性体元件,其在其外周上具有电接触装置,并且响应于所述内主体相对于所述外主体构件向上移动的膨胀器装置可操作以使弹性体元件膨胀, 接触装置接合接触套筒,并使得钻杆测试数据能够通过电线传输到表面。

    Packer for wellhead repair unit
    4.
    发明授权
    Packer for wellhead repair unit 失效
    井口维修单位的封隔器

    公开(公告)号:US5009265A

    公开(公告)日:1991-04-23

    申请号:US404159

    申请日:1989-09-07

    摘要: A geothermal wellhead repair unit including a mechanically set packer to isolate the wellhead for removal and repair thereof. The packer is run into the well string using a running tool. The packer is set by placing tension on the mandrel to set the packing elements and the slip assembly. Once the packer is set, the running tool can be disengaged without fear of collapsing the packer and the wellhead removed for repair or replacement. Upon replacement of the wellhead, the running tool is used to unset and retrieve the packer.

    摘要翻译: 一个地热井口修复单元,包括机械设置的封隔器,用于隔离井口,以便拆卸和修理井口。 打包机使用运行工具运行到井筒中。 封隔器通过在心轴上放置张力来设置包装元件和滑动组件来设定。 一旦封隔器被固定,运行的工具就可以脱开,而不用担心打包机塌缩,并将井口拆下来进行修理或更换。 在更换井口时,运行的工具用于取消打开和取回封隔器。