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    • 8. 发明申请
    • Hydraulic Multi-Displacement Hoisting Cylinder System
    • 液压多位置提升缸系统
    • US20170074059A1
    • 2017-03-16
    • US15116067
    • 2015-02-05
    • Ensign Drilling Partnership
    • Wayne D. KIPPRonald Pettapiece
    • E21B19/086F15B11/16F15B15/14F15B11/04
    • E21B19/086F15B11/036F15B11/04F15B11/16F15B15/1447F15B15/1466F15B2211/20538F15B2211/20546F15B2211/20576
    • An assembly for hoisting and lowering a drill string of a drilling rig includes a multiple displacement hydraulic cylinder having a blind end, a rod end, and a single piston rod configured for slidable extension and retraction movement within the interior space of the cylinder. The interior space is defined by three chambers, each chamber having a port allowing switchable flow of hydraulic fluid into and out from the cylinder. The assembly also includes a pumping and switching system with hydraulic fluid connections to each port of the cylinder. The pumping and switching system is configured to switch the direction of hydraulic fluid flow through each of the ports of the three chambers, thereby providing the assembly with a plurality of hydraulic fluid flow path combinations. Each flow path combination provides a different speed-to-force ratio for extending or retracting the piston rod, thereby hoisting or lowering the drill string.
    • 用于提升和降低钻机的钻柱的组件包括多位移液压缸,其具有盲端,杆端和构造用于在气缸的内部空间内的可滑动的伸缩运动的单个活塞杆。 内部空间由三个室限定,每个室具有允许液压流体进出气缸的可切换流动的端口。 该组件还包括泵和切换系统,其中液压流体连接到气缸的每个端口。 泵送和切换系统被配置为切换液压流体流动通过三个室的每个端口的方向,从而为组件提供多个液压流体流动路径组合。 每个流动路径组合提供不同的速度与力之比来延伸或缩回活塞杆,从而提升或降低钻柱。
    • 10. 发明申请
    • Hydraulic Draw Works
    • 液压牵引工程
    • US20160032666A1
    • 2016-02-04
    • US14705779
    • 2015-05-06
    • Wiley T. BriceDavid J. HarrisGraham A. Hamshaw
    • Wiley T. BriceDavid J. HarrisGraham A. Hamshaw
    • E21B19/02
    • E21B19/086
    • A hydraulic draw-works comprises several hydraulic cylinders of mixed orientation, such that some hydraulic cylinders actuate upwards and some hydraulic cylinders actuate downwards. These cylinders are connected by a plurality of braces mounted along a guide rail, and the drill head is mounted on a carriage along the guide rail and actuated by the upwards-oriented cylinders. The use of mixed orientation cylinders allows the effective vertical stroke length required to raise and lower the drill head to be halved. In a preferred embodiment, through-rod porting of the downwards-oriented cylinders supplies hydraulic fluid to the remainder through a manifold, and digitally controlled directional valves allow precise control of the drill head.
    • 液压牵引装置包括多个混合取向的液压缸,使得一些液压缸向上致动并且一些液压缸向下致动。 这些气缸通过沿着导轨安装的多个支架连接,并且钻头沿着导轨安装在滑架上并由向上定向的气缸致动。 使用混合定向气缸允许将钻头抬高和降低所需的有效垂直行程长度减半。 在优选的实施例中,向下定向的气缸的通过杆移动通过歧管将液压流体提供给其余流体,并且数字控制的换向阀允许钻头的精确控制。