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    Concentric pipes expanded at the pipe ends and method of forming
    39.
    发明授权
    Concentric pipes expanded at the pipe ends and method of forming 有权
    同轴管在管端扩展，形成方法

    公开(公告)号：US07438132B2

    公开(公告)日：2008-10-21

    申请号：US10421682

    申请日：2003-04-23

    申请人： Robert Lance Cook ,  David Paul Brisco ,  R. Bruce Stewart ,  Lev Ring ,  Richard Carl Haut ,  Robert Donald Mack ,  Alan B. Duell

    发明人： Robert Lance Cook ,  David Paul Brisco ,  R. Bruce Stewart ,  Lev Ring ,  Richard Carl Haut ,  Robert Donald Mack ,  Alan B. Duell

    IPC分类号： E21B29/00

    CPC分类号： E21B43/106 ,  E21B7/208 ,  E21B29/10 ,  E21B33/14 ,  E21B43/103

    摘要： A method of forming a wellhead including: drilling a wellbore; positioning an outer casing at least partially within an upper portion of the wellbore; positioning a first tubular member within the outer casing; expanding at least a portion of the first tubular member into contact with an interior surface of the outer casing; positioning a second tubular member within the outer casing and the first tubular member; and expanding at least a portion of the second tubular member into contact with an interior portion of the outer casing; wherein, after expanding the portions of the first and second tubular members into contact with the interior portion of the outer casing, at least a portion of the second tubular member is positioned within the first tubular member; and wherein, after expanding the portions of the first and second tubular members into contact with the interior portion of the outer casing, the first tubular member and the second tubular member define a passage there between.

    摘要翻译： 一种形成井口的方法，包括：钻井井; 至少部分地将外壳定位在井眼的上部内; 将第一管状构件定位在外壳内; 将所述第一管状构件的至少一部分膨胀成与所述外壳的内表面接触; 将第二管状构件定位在外壳和第一管状构件内; 并且使所述第二管状构件的至少一部分膨胀成与所述外壳的内部部分接触; 其中，在将所述第一和第二管状构件的所述部分膨胀成与所述外壳的内部部分接触之后，所述第二管状构件的至少一部分定位在所述第一管状构件内; 并且其中，在将所述第一和第二管状构件的所述部分膨胀成与所述外部壳体的内部部分接触之后，所述第一管状构件和所述第二管状构件在其间限定通道。