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    • 6. 发明授权
    • Hydraulic setting assembly
    • 液压设定组件
    • US08453729B2
    • 2013-06-04
    • US12658226
    • 2010-02-04
    • Michael J. HarrisMartin Alfred Stulberg
    • Michael J. HarrisMartin Alfred Stulberg
    • E21B22/00
    • E21B23/01E21B23/04E21B23/06E21B33/04E21B43/103E21B43/105
    • Novel hydraulic actuators and hydraulic setting assemblies are provided for use in downhole, oil and gas well tools. The novel hydraulic actuators include a cylindrical mandrel and an annular stationary sealing member connected to the mandrel. A hydraulic cylinder is slidably supported on the mandrel and stationary sealing member and is releasably fixed in position on the mandrel. The stationary sealing member divides the interior of the cylinder into a bottom hydraulic chamber and a top hydraulic chamber. An inlet port provides fluid communication into the bottom hydraulic chamber, and an outlet port provides fluid communication into the top hydraulic chamber. A balance piston is slidably supported within the top hydraulic chamber of the actuator. The piston includes an axially extending passageway. Fluid communication through the piston and between its upper and lower sides is controlled by a normally shut valve in the passageway. In the absence of relative movement between the mandrel and cylinder, the balance piston is able to slide in response to a difference in hydrostatic pressure between the outlet port, is which is on one side of the piston, and the portion of the top hydraulic chamber that is on the bottom side of the piston.
    • 提供了新型液压执行器和液压设置组件,用于井下,油气井工具。 新颖的液压致动器包括圆柱形心轴和连接到心轴的环形固定密封构件。 液压缸可滑动地支撑在心轴和固定密封构件上,并且可释放地固定在心轴上的适当位置。 固定密封构件将气缸的内部分成底部液压室和顶部液压室。 入口端口提供流体连通到底部液压室,并且出口端口提供流体连通到顶部液压室。 平衡活塞可滑动地支撑在致动器的顶部液压室内。 活塞包括轴向延伸的通道。 通过活塞和其上下侧之间的流体连通由通道中的常闭阀控制。 在心轴和气缸之间没有相对运动的情况下,平衡活塞能够响应于在活塞的一侧上的出口与顶部液压室的部分之间的静水压力差而滑动 就是在活塞的底面。
    • 8. 发明授权
    • Method and system for governing block speed
    • 控制块速度的方法和系统
    • US07793918B2
    • 2010-09-14
    • US11850391
    • 2007-09-05
    • Frederic M. Newman
    • Frederic M. Newman
    • B66D1/50
    • B66D1/28B66D1/48
    • A task input is received at a well service rig. The maximum allowable speed is determined for the task. Current block speed inputs are received. The throttle position for the engine controlling the block is evaluated to determine if the block is to be sped up or slowed down. When the throttle position indicates the operator is attempting to speed up the block, the current block speed is compared to the maximum allowable speed and the engine is only allowed to speed up the block up to the maximum allowable speed, at which point the operators control of block speed is limited to reducing block speed. Each task can have multiple maximum allowable speeds, which can vary based on specified conditions. When the hookload is light or the remaining equipment in the well is small, the lock-up feature for the transmission can be disengaged in addition to the block speed governing feature.
    • 在井服务钻机上接收任务输入。 确定任务的最大允许速度。 接收当前块速度输入。 评估用于控制块的发动机的节气门位置以确定该块是加速还是减速。 当节气门位置指示操作者正在尝试加速块时,将当前块速度与最大允许速度进行比较,并且仅允许发动机将该块加速到最大允许速度,此时操作者控制 块速度被限制在减少块速度。 每个任务可以具有多个最大允许速度,这可以根据指定的条件而变化。 当吊钩较轻或井中剩余的设备较小时,除了挡块调速功能外,传动装置的锁定功能可以脱开。