Technique for expanding tubular structures
    2.
    发明授权
    Technique for expanding tubular structures 有权
    膨胀管结构技术

    公开(公告)号:US06688397B2

    公开(公告)日:2004-02-10

    申请号:US10028949

    申请日:2001-12-17

    IPC分类号: E21B4310

    CPC分类号: E21B43/105

    摘要: A system for expanding tubular structures. The system comprises a mandrel that is moved through the center of a tubular structure to increase the diameter of the tubular structure via deformation. The system utilizes an expansion device having a mandrel with multiple segments moved between a contracted state and an expanded state. In one embodiment, the mandrel segments are spring biased to permit a degree of independent movement of each mandrel segment with respect to the other mandrel segments.

    摘要翻译: 一种用于膨胀管状结构的系统。 系统包括心轴,其通过管状结构的中心移动以通过变形增加管状结构的直径。 该系统利用具有在收缩状态和膨胀状态之间移动的多个段的心轴的膨胀装置。 在一个实施例中,心轴段被弹簧偏置以允许每个心轴段相对于其它心轴段的独立运动程度。