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    • 7. 发明授权
    • Steerable drilling system
    • 导向钻井系统
    • US07926592B2
    • 2011-04-19
    • US11370667
    • 2006-03-08
    • David L SmithChristian MengerEdward Richards
    • David L SmithChristian MengerEdward Richards
    • E21B7/04
    • E21B7/06E21B17/1014E21B21/065E21B21/10
    • A steerable drilling system including a bias unit and a separator. The separator is arranged to remove particulate matter from the supply of pressurized drilling mud to the actuator of the bias unit. The separator includes a hydrocyclone located upstream of the actuators. The hydrocyclone includes a housing defining a substantially conical recess having a large diameter end and a small diameter end. An inlet is in fluid communication with the large diameter end for providing the drilling mud thereto. A first outlet is in fluid communication with the small diameter end for outlet of relatively dirty mud. A second outlet is in fluid communication with the large diameter end for outlet of a supply of relatively clean mud for the plurality of actuators.
    • 一种可操纵的钻井系统,包括偏置单元和分离器。 分离器布置成将颗粒物质从加压钻井泥浆的供应中移除到偏置单元的致动器。 分离器包括位于致动器上游的水力旋流器。 水力旋流器包括限定具有大直径端和小直径端的基本上圆锥形的凹部的壳体。 入口与大直径端流体连通,以向其提供钻井泥浆。 第一出口与较小直径端流体连通,用于较脏污泥的出口。 第二出口与用于多个致动器的相对干净的泥浆的出口的大直径端部流体连通。