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Breakout wrench system

A technology of wrench and drill string, which is applied in the direction of wrench, drill pipe, casing, etc., and can solve problems such as loosening of drill string joints

Inactive Publication Date: 2014-12-17
CATERPILLAR GLOBAL MINING EQUIP LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, often only certain joints in the drill string are loose while others remain tight and the driller must employ other means and / or methods to loosen the drill string joints

Method used

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Examples

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Embodiment Construction

[0023] As required, detailed embodiments of the present invention are disclosed herein. It should be understood, however, that the disclosed embodiments are merely exemplary embodiments of the invention that can be embodied in various and alternative forms. The figures are not necessarily to scale and certain features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for the claims and / or as a means for teaching one skilled in the art to variously employ the present invention. representative basis.

[0024] Rock drilling machines use a drill string consisting of drill rods and / or drill pipe that are added to or removed from the drill string in order to achieve the required drilling depth of the blasthole. Drill pipe is often designed in different forms. figure 1 An example of a drill rod 100 with two male ...

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Abstract

A breakout wrench for use with a rock drill string includes a frame adapted for mounting to a rock drill feed guide structure, and a sub-frame rotatably connected to the frame about a drill string longitudinal axis. The sub-frame supports a pair of jaw members adapted for radial movement towards and away from one another and to releasably engage a first section of a drill string. The breakout wrench also includes a clamping member supported by the rock drill feed guide structure. The clamping member is adapted to releasably engage a second section of the drill string spaced axially from the first section.

Description

technical field [0001] The present invention relates to a breakout wrench and centerer system for use in rock drilling operations. Background technique [0002] Rock drilling machines use a drill string consisting of several drill rods and / or drill pipes that can be added to or removed from the drill string in order to achieve the required drill string for the blasthole into depth. Rock drilling machines may use shock waves that are transmitted with rotation down the drill string to the drill bit in order to disrupt the formation drilled into it. During drill string impact and rotation, the drill string joints can tighten and make it difficult for them to loosen from each other. [0003] When the desired drilling depth is reached, the drill rods and / or drill pipes are removed one at a time for storage. A typical method of loosening a joint between drill pipe or drill pipe is to stop drilling completely when the drill string is at the bottom of the borehole, reduce the fee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B19/16E21B19/14E21B7/02B25B13/50
CPCE21B19/163
Inventor S·A·康奈尔
Owner CATERPILLAR GLOBAL MINING EQUIP LLC