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    ACTIVELY CONTROLLED SELF-ADJUSTING BITS AND RELATED SYSTEMS AND METHODS
    2.
    发明申请
    ACTIVELY CONTROLLED SELF-ADJUSTING BITS AND RELATED SYSTEMS AND METHODS 审中-公开
    自动控制自调整位及相关系统及方法

    公开(公告)号：US20170074047A1

    公开(公告)日：2017-03-16

    申请号：US14851117

    申请日：2015-09-11

    申请人： Baker Hughes Incorporated

    发明人： Jayesh Rameshlal Jain

    IPC分类号： E21B10/62

    CPC分类号： E21B10/62 ,  E21B7/064 ,  E21B2010/622

    摘要： An actively controlled self-adjusting earth-boring tool includes a body carrying cutting elements and an actuation device disposed at least partially within the body. The actuation device may include a first fluid chamber, a second fluid chamber, and a reciprocating member dividing the first fluid chamber from the second fluid chamber. A connection member may be attached to the reciprocating member and may have a drilling or bearing element connected thereto. A first fluid flow path may extend from the second fluid chamber to the first fluid chamber. A second fluid flow path may extend from the first fluid chamber to the second fluid chamber. A rate controller may control a flowrate of a hydraulic fluid through the first and second fluid flow path. The rate controller may include an electromagnet, and the flowrates of the hydraulic fluid may be adjusted by adjusting fluid properties of the hydraulic fluid.

    摘要翻译： 主动控制的自调节钻孔工具包括承载切割元件的主体和至少部分地设置在主体内的致动装置。 致动装置可以包括第一流体室，第二流体室和将第一流体室与第二流体室分隔开的往复运动件。 连接构件可以附接到往复运动构件，并且可以具有与其连接的钻孔或轴承元件。 第一流体流动路径可以从第二流体室延伸到第一流体室。 第二流体流动路径可以从第一流体室延伸到第二流体室。 速率控制器可以控制通过第一和第二流体流路的液压流体的流量。 速率控制器可以包括电磁体，并且可以通过调节液压流体的流体特性来调节液压流体的流量。