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公开(公告)号：US20070163806A1
公开(公告)日：2007-07-19
申请号：US11654195
申请日：2007-01-17
IPC分类号： E21B47/18
摘要： A method and system for controlling a horizontal directional drilling machine having a boring tool. A rate of rotation and a rate of thrust are selected by an operator. Controls allow an automatic boring operation mode to be initiated to maintain the selected rate of rotation and thrust without further input from the operator. Periodically, when the rotation and thrust are interrupted, such as to modify the drill string, the automatic boring operation mode is interrupted. The automatic boring operation mode may be resumed without requiring the operator to select the rate of rotation and rate of thrust. The rate of rotation is resumed before the rate of thrust to reduce drill string shock loads and increase drilling performance.
摘要翻译： 一种用于控制具有钻孔工具的水平定向钻孔机的方法和系统。 旋转速度和推力比由操作者选择。 控制器允许启动自动钻孔操作模式以保持所选择的旋转和推力，而无需来自操作者的进一步输入。 周期性地，当旋转和推力中断时，如修改钻柱，自动钻孔操作模式被中断。 可以恢复自动钻孔操作模式，而不需要操作者选择旋转速率和推力。 在推力减小钻柱冲击载荷之前恢复旋转速度并增加钻井性能。
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公开(公告)号：US5778991A
公开(公告)日：1998-07-14
申请号：US705007
申请日：1996-08-29
摘要： A directional boring apparatus is disclosed where the apparatus is controlled through a method which includes deviating a drill head from a straight path into a desired direction angled away from the straight path. The deviation is achieved by applying an axial force to the drill head when a drill head cutting member is positioned within an arc of rotation through which the desired direction passes. The drill head is retracted when the cutting member is outside of the arc of rotation.
摘要翻译： 公开了一种定向钻孔装置，其中通过包括将钻头从直线路径偏离到远离直线路径的期望方向的方法来控制装置。 当钻头切割构件定位在期望方向通过的旋转弧内时，通过向钻头施加轴向力来实现偏差。 当切割构件在旋转弧之外时，钻头缩回。
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