Drill string shock absorbers
    111.
    发明授权
    Drill string shock absorbers 失效
    钻柱减震器

    公开(公告)号:US5377772A

    公开(公告)日:1995-01-03

    申请号:US218742

    申请日:1994-03-28

    申请人: Bernard L. Gien

    发明人: Bernard L. Gien

    IPC分类号: E21B17/07 E21B17/10 E21B17/00

    CPC分类号: E21B17/1042 E21B17/073

    摘要: A shock absorber for use with a borehole drill string and which is to take a rotational load and absorb axial shock loading, the absorber consisting essentially of a pair of oppositely disposed components adapted for connection into a drill string and positioned on opposite sides of a resilient member, the latter being held between rigid rings around and separate from the components, each ring being secured to the component on the opposite side of the member.

    摘要翻译: 一种与钻孔钻柱一起使用并且要承受旋转载荷并吸收轴向冲击载荷的减震器,所述吸收器基本上由一对相对设置的部件组成,该部件适于连接到钻柱中并且定位在弹性的相对侧上 构件,后者被保持在刚性环周围并与部件分离,每个环固定到构件的相对侧上的部件。

    Drill pipe protector
    112.
    发明授权

    公开(公告)号:US3588199A

    公开(公告)日:1971-06-28

    申请号:US3588199D

    申请日:1969-08-11

    申请人: ARTHUR H HOPMANS

    发明人: HOPMANS ARTHUR H

    IPC分类号: E21B17/10 F16C1/26

    CPC分类号: E21B17/1042

    摘要: MY INVENTION IS A DRILL PIPE PROTECTOR COMPRISING A SPACING MEANS AND AN ATTACHING MEANS AND CHARACTERIZED BY A MEANS

    FOR INDUCING A COMPRESSIVE STRESS AT THE WEARING SURFACE TO CLOSE AND SEAL CUTS.