Wellhead
    7.
    发明授权
    Wellhead 有权
    井口

    公开(公告)号:US07147053B2

    公开(公告)日:2006-12-12

    申请号:US10918244

    申请日:2004-08-13

    IPC分类号: E21B43/10 E21B33/04

    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。