Retrievable torque-through packer having high strength and reduced
cross-sectional area
    8.
    发明授权
    Retrievable torque-through packer having high strength and reduced cross-sectional area 有权
    可回收的具有高强度和横截面积减小的扭矩通过型封隔器

    公开(公告)号:US6056052A

    公开(公告)日:2000-05-02

    申请号:US273793

    申请日:1999-03-22

    CPC分类号: E21B33/1293

    摘要: A packer for use in subterranean wellbores provides efficient utilization of its cross-sectional area with mechanisms therein for anchoring, sealing, and torquing through the packer. In a preferred embodiment, a retrievable packer has a tubular mandrel, rubbers disposed on the mandrel, upper and lower compression members axially straddling the rubbers, a barrel-type casing slip, upper and lower wedges axially straddling the casing slip, a release mechanism, and a series of threaded load-distributing components which help to prevent collapse of the mandrel.

    摘要翻译: 用于地下井筒的封隔器提供其横截面积的有效利用,其中具有用于通过封隔器锚定,密封和扭转的机构。 在优选实施例中,可回收封隔器具有管状心轴,设置在心轴上的橡胶,轴向跨越橡胶的上压缩构件和下压缩构件,轴套式套管滑动件,轴向跨越套管滑块的上下楔块,释放机构, 以及一系列有助于防止心轴塌陷的螺纹负载分配部件。