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1. 发明申请

US20170074059A1 Hydraulic Multi-Displacement Hoisting Cylinder System 审中-公开
标题翻译：液压多位置提升缸系统
公开(公告)号：US20170074059A1
公开(公告)日：2017-03-16
申请号：US15116067
申请日：2015-02-05
申请人： Ensign Drilling Partnership
发明人： Wayne D. KIPP , Ronald Pettapiece
IPC分类号： E21B19/086 , F15B11/16 , F15B15/14 , F15B11/04
CPC分类号： E21B19/086 , F15B11/036 , F15B11/04 , F15B11/16 , F15B15/1447 , F15B15/1466 , F15B2211/20538 , F15B2211/20546 , F15B2211/20576
摘要： 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.
摘要翻译：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。

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