Apparatus for actuating an annular piston
    47.
    发明授权
    Apparatus for actuating an annular piston 有权
    用于致动环形活塞的装置

    公开(公告)号:US06966370B2

    公开(公告)日:2005-11-22

    申请号:US10078922

    申请日:2002-02-20

    摘要: An apparatus comprising a first tubular member; a second tubular member positioned within and coupled to the first tubular member; a first annular piston chamber defined by the space between the first and second tubular members; an annular piston movably coupled to the second tubular member and positioned within the first annular piston chamber; and a third tubular member for receiving the first and second tubular members coupled to the first tubular member. The third tubular member comprises a radially expandable and plastically deformable tubular member.

    摘要翻译: 一种装置,包括:第一管状构件; 定位在第一管状构件内并联接到第一管状构件的第二管状构件; 由所述第一和第二管状构件之间的空间限定的第一环形活塞室; 可移动地联接到第二管状构件并定位在第一环形活塞室内的环形活塞; 以及用于接收联接到第一管状构件的第一和第二管状构件的第三管状构件。 第三管状构件包括径向可膨胀且可塑性变形的管状构件。

    Wellhead
    48.
    发明授权
    Wellhead 有权
    井口

    公开(公告)号:US06823937B1

    公开(公告)日:2004-11-30

    申请号:US09502350

    申请日:2000-02-10

    IPC分类号: E21B4310

    摘要: A wellhead is formed by extruding a plurality of tubular liners off of a mandrel into contact with an outer casing. The first tubular liner and mandrel are positioned within the wellbore with the tubular liner in an overlapping relationship with the outer casing. At least a portion of the tubular liner is extruded off of the mandrel into contact with the interior surface of the outer casing. The first tubular liner is extruded off of the mandrel by pressurizing an interior portion of the first tubular liner. Subsequent tubular liners are positioned in concentric overlapping relation and similarly extruded off of a mandrel into at least partial contact with the interior surface of the outer casing.

    摘要翻译: 通过将多个管状衬套从心轴挤出而与外壳接触而形成井口。 第一管状衬套和心轴以与外壳重叠的关系定位在井眼内。 管状衬垫的至少一部分从心轴挤出而与外壳的内表面接触。 通过对第一管状衬垫的内部部分进行加压,将第一管状衬套从心轴挤出。 随后的管状衬垫以同心重叠的关系定位,并且类似地从心轴挤压成与外壳的内表面至少部分接触。