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Valve system for drilling systems

A valve block, valve technology, applied in the field of valve system

Inactive Publication Date: 2015-03-11
LONGYEAR TM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The load lock valve can be in fluid communication with the load lock valve

Method used

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  • Valve system for drilling systems
  • Valve system for drilling systems
  • Valve system for drilling systems

Examples

Experimental program
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Effect test

Embodiment Construction

[0021] The valve block assembly, valve system, and drilling system are all configured to control extension and retraction of the feed cylinder for controlling the position of the rotating drill head along the drilling derrick. In at least one embodiment, the valve arrangement may comprise a plurality of valves integrated within a valve block. Such an arrangement may reduce the number of fittings and hydraulic lines associated with the control of the valve arrangement, which will in turn reduce the likelihood that lines are improperly routed or that fittings and / or connections may become loose. Still further, as will be described in more detail below, the valve system can be configured to allow a wide range of operating speeds to facilitate fast feed operation as well as high force operation.

[0022] For ease of reference, the valve arrangement described below will be described on the basis of the feed cylinder connecting the rotary drill bit to the mast. It will be appreciat...

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PUM

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Abstract

A valve system includes a load holding valve, a feed balancing valve, and a fast feed differential valve. The load holding valve may be in fluid communication with the load holding valve. The fast feed differential valve is configured to move between an engaged state and a disengaged state. In the engaged state the fast feed differential valve fluidly couples a ring side of a feed cylinder, the load holding valve, and a piston side of the feed cylinder to allow fluid to flow from the ring side to the piston side.

Description

technical field [0001] The present invention relates to hydraulic control systems for drilling systems, and in particular to valve systems. technical background [0002] Drilling equipment is commonly used to drill holes in various substrates. Such drilling equipment typically includes a drill bit mounted on a derrick. The equipment typically includes mechanisms and equipment that enable the movement of the drill bit along at least one portion of the derrick. The drill bit also typically includes a mechanism that receives and engages the upper end of the drill rod or pipe. Drill rod or pipe may be a single rod or tube, or it may be part of a drill string that includes a drill bit or other equipment at the other end, which may be referred to as the bit end. [0003] The drill bit applies a force to the drill pipe or pipe, which is transmitted to the drill string. If the applied force is rotational, the drill bit will cause the drill string to rotate within the borehole. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B34/16E21B34/10
CPCF15B2211/7053F15B2211/3058F15B2211/31582F15B2211/5153F15B2211/20576F15B2211/2652F15B11/17F15B2211/30515F15B2211/775F15B11/024F15B2211/50509F15B11/0426Y10T137/87917Y10T137/8593Y10T137/86485Y10T137/87096
Inventor 斯蒂芬·弗雷德克里斯托弗·克鲁泽
Owner LONGYEAR TM