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    Multilateral well drilling and completion method and apparatus
    2.
    发明公开
    Multilateral well drilling and completion method and apparatus 失效
    多边钻井和完井方法和设备

    公开(公告)号：EP1533467A3

    公开(公告)日：2005-08-24

    申请号：EP05004298.5

    申请日：1995-08-24

    申请人： HALLIBURTON ENERGY SERVICES, INC.

    发明人： Longbotton, James R. ,  Cox, Don C. ,  Gano, John C. ,  Welch, William R. ,  White, Pat M. ,  Nivens, Harold Wayne ,  Jacquier, Richard Charles ,  Holbrook, Paul David ,  Frreman, Tommie Austin ,  Mills, David H.

    IPC分类号： E21B7/08 ,  E21B41/00 ,  E21B23/02 ,  E21B29/06

    CPC分类号： E21B29/06 ,  E21B7/061 ,  E21B17/00 ,  E21B17/10 ,  E21B17/1007 ,  E21B17/22 ,  E21B23/00 ,  E21B23/002 ,  E21B23/02 ,  E21B23/03 ,  E21B33/1293 ,  E21B33/1295 ,  E21B41/0042 ,  E21B43/10 ,  F16L7/00 ,  F16L9/16

    摘要： Multilateral wells and improved multilateral well structures are made by setting a diverter (332) at a prescribed position and a prescribed orientation in a main well flow conductor (120) located within a main wellbore (110), boring through a sidewall of the main well flow conductor (120) and into a material (112) surrounding the main well flow conductor (120), the boring creating a window (324) having a particular shape in the sidewall, the orientation of the diverter (332) determining a lateral position of the window in the main well flow conductor (120), a lateral wellbore (150) thereby being formed in the material and extending from the main wellbore (110), and lining the lateral wellbore (150) with a liner (340), the liner having an interface end (342), the interface end being adapted to contact a periphery of the window (342) in the sidewall, and cementing the liner (340) in place within the lateral wellbore (150). The step of cementing creates a pressure-bearing seal between the periphery of the window and the interface end (342) of the liner (340). The method allows multiple lateral wellbores to be joined to the main wellbore and provides for connectivity among main and lateral wellbores, pressure-bearing sealing of joints to allow selective isolation of one or more wellbores or portions thereof and subsequent wellbore access for rework or other purposes.

    摘要翻译： 通过将分流器（332）设置在位于主井身（110）内的主井流导体（120）中的规定位置和规定的方向上来制造多边井和改进的多边井结构，所述主井流（120）穿过主井的侧壁 （120）并且流入围绕主井流导体（120）的材料（112）中，该钻孔在侧壁中形成具有特定形状的窗口（324），转向器（332）的取向确定侧向位置 （120）中的窗口，从而在所述材料中形成并且从所述主井眼（110）延伸并且用衬垫（340）衬砌所述侧井眼（150）的侧井眼（150） 所述衬里具有界面端（342），所述界面端适于接触所述侧壁中的所述窗口（342）的周边，并且将所述衬里（340）固定在所述侧井眼（150）内的适当位置。 粘合步骤在窗口周边和衬里（340）的界面端（342）之间形成压力密封。 该方法允许将多个横向井筒连接到主井眼并提供主井筒和侧井筒之间的连通性，连接的承压密封以允许选择性地隔离一个或多个井筒或其一部分，并随后钻井以进行返工或其他目的 。