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    • 4. 发明授权
    • Apparatus and method for communicating with devices positioned outside a liner in a wellbore
    • 与位于井眼中的衬套外部的设备通信的装置和方法
    • US06302203B1
    • 2001-10-16
    • US09528334
    • 2000-03-17
    • Chistophe M. RayssiguierMichael R. JohnsonRonald E. PringleJohn A. Booker
    • Chistophe M. RayssiguierMichael R. JohnsonRonald E. PringleJohn A. Booker
    • E21B2108
    • E21B17/028E21B17/003E21B33/14E21B43/10E21B47/011
    • A downhole string includes a liner and devices positioned outside the liner. One or more control lines extend from the liner devices along the exterior of the liner to one or more connectors that provide connection points inside the liner. The one or more connectors may include electrical connectors (e.g., direct contact connectors), inductive connectors (e.g., inductive couplers), optical connectors (e.g., fiber optic connectors), and hydraulic connectors. The one or more control lines may be electrical lines, fiber optic lines, or hydraulic lines. The downhole string may also be used with a cement protector during cementing operations to protect both the inside of the liner as well as the one or more connectors attached to the liner. The cement protector includes a sleeve that isolates cement from the inside of the liner during a cementing operation so that a liner wiper plug is not needed. The cement protector is engageable to a pulling tool that is attached to a running tool. The running tool in turn is connected to a pipe through which a cement slurry can be pumped. The cement slurry pumped through the inner bore of the pipe enters the sleeve of the cement protector. One or more ports are provided in the cement protector sleeve to enable communication of the cement slurry to an annulus region between the outer wall of the liner and the inner wall of the wellbore. If the apparatus and method is used with a casing, then a running tool may be omitted.
    • 井下柱包括衬套和位于衬套外部的装置。 一个或多个控制线从衬垫装置沿着衬套的外部延伸到提供衬套内部的连接点的一个或多个连接器。 一个或多个连接器可以包括电连接器(例如,直接接触连接器),电感连接器(例如感应耦合器),光连接器(例如,光纤连接器)和液压连接器。 一个或多个控制线可以是电线,光纤线或液压线。 在固井操作期间,井下柱还可以与水泥保护器一起使用,以保护衬套的内部以及连接到衬套的一个或多个连接器。 水泥保护器包括在固井操作期间将水泥从衬里的内部隔离的套筒,从而不需要衬垫式雨刷。 水泥保护器可接合到连接到正在运行的工具上的牵引工具。 运行工具又连接到可以泵送水泥浆的管道。 泵送通过管子内孔的水泥浆进入水泥保护器的套管。 一个或多个端口设置在水泥保护器套筒中,以使得水泥浆料能够连通到衬套的外壁和井筒的内壁之间的环空区域。 如果装置和方法与壳体一起使用,则可以省略运行工具。