Method and apparatus for expanding tubulars in a wellbore
    3.
    发明授权
    Method and apparatus for expanding tubulars in a wellbore 有权
    用于在井眼中扩张管的方法和装置

    公开(公告)号:US07503396B2

    公开(公告)日:2009-03-17

    申请号:US11354659

    申请日:2006-02-15

    IPC分类号: E21B23/00

    CPC分类号: E21B43/103 E21B43/105

    摘要: Methods and apparatus enable expanding tubulars in a wellbore. In one embodiment, a method includes providing a first tubular string having an expansion member disposed at a lower end and connected with a threaded connection which will permit movement of the expansion member relative to the tubular string. The tubular string is held at the surface of the well while a second, smaller string is run into the first tubular string and engaged with the expansion member. Thereafter, the assembly including the first tubular string, expansion member and second tubular string are run to depth in a wellbore. Finally, the expansion member is urged upwards into the tubular string to expand the tubular string and bring it into frictional contact with surrounding wellbore walls. The initial expansion can be performed with a hydraulic jack and additional expansion can be performed by urging the cone upwards with the second tubular string.

    摘要翻译: 方法和装置使得能够在井眼中扩张管。 在一个实施例中,一种方法包括提供第一管状管柱,其具有设置在下端的膨胀构件,并与螺纹连接部连接,该螺纹连接件将允许膨胀构件相对于管状管柱移动。 管柱保持在井的表面,而第二较小的绳子进入第一管状柱并与膨胀构件接合。 此后,包括第一管状管柱,膨胀构件和第二管状管柱的组件在井筒中深度地运行。 最后,膨胀构件被向上推入管状管柱中以使管状管柱膨胀并使其与周围的井筒壁摩擦接触。 可以用液压千斤顶进行初始膨胀,并且可以通过用第二管状柱向上推动锥体来执行额外的膨胀。