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    • 1. 发明公开
    • CONTROL SYSTEM FOR DOWNHOLE CASING MILLING SYSTEM
    • STEUERUNGSSYSTEMFÜREINBOHLLOCHGEHÄUSE-FRÄSSYSTEM
    • EP3060743A4
    • 2017-07-26
    • EP13900685
    • 2013-12-31
    • HALLIBURTON ENERGY SERVICES INC
    • GENDRE ANDREW STELFER STUART ALEXANDER
    • E21B7/08E21B29/06
    • E21B29/06E21B7/04E21B7/061E21B47/09
    • A system and method for milling a casing in a wellbore wherein an upper milling portion of a milling system engages a track of a lower guide system of the milling system in order to orient the upper milling portion. The upper milling portion moves along a track from a first position to a second position, where the the upper milling portion is securedly affixed to the lower guide portion. A traveling guide arm is used to move the milling portion along a travel path. A piston on the traveling guide arm is disposed between first and second fluid chambers, with a throughbore in the piston forming a fluid path between the two chambers. An adjustable valve in the throughbore is controlled by a proximity sensor to alter the flow of fluid between the chambers. The sensor monitors the distance between a fixed and moving point of the milling system.
    • 一种用于在井眼中铣削套管的系统和方法,其中铣削系统的上部铣削部分接合铣削系统的下部引导系统的轨道,以便对上部铣削部分进行定向。 上铣削部分沿着轨道从第一位置移动到第二位置,其中上铣削部分牢固地固定到下引导部分。 行进导向臂用于沿着行进路径移动铣削部分。 行进导向臂上的活塞布置在第一流体室和第二流体室之间,活塞中的通孔形成两个室之间的流体路径。 通孔内的可调节阀由接近传感器控制以改变腔室之间的流体流动。 传感器监控铣削系统的固定点和移动点之间的距离。