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Special drill for geophysical prospecting

A drill bit and drill pipe technology, which is applied in the field of surveying, can solve problems such as electric shock accidents and easily damaged pipelines, and achieve the effect of avoiding damage and expanding the exploration area.

Active Publication Date: 2012-09-19
SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the lower end of the drill bit is pointed and has protruding serrations 11, during the drilling process, when the drill bit directly touches the outer surface of the non-metallic pipeline, it is easy to damage the outer layer of the pipeline
In particular, when these pipelines are power pipelines, once the outer protective layer of the pipeline is damaged, electric shock accidents may occur at any time

Method used

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  • Special drill for geophysical prospecting
  • Special drill for geophysical prospecting
  • Special drill for geophysical prospecting

Examples

Experimental program
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Effect test

Embodiment Construction

[0021] Such as image 3 As shown, a specific embodiment of the drill bit for geophysical prospecting of the present invention includes a hollow pipe body 1 and a connecting rod 2 for a drill pipe.

[0022] The hollow pipe body 1 is a metal round pipe, both ends of which are closed, and a plurality of water outlet holes 11 are provided on the pipe body. The optimum length of the hollow pipe body 1 is between 30 centimeters and 33 centimeters, and the bottom and both sides of the pipe body are staggered to offer 3 discharge holes 11, and the spacing of the holes is about 5 centimeters.

[0023] The drill pipe connecting rod 2 is a hollow metal round pipe, which is fixedly arranged on the hollow pipe body 1 by means of welding or the like. The inner cavity of the drill pipe connecting rod 2 is connected with the inner cavity of the hollow pipe body 1 . The end of the drill pipe connecting rod 2 is provided with a connecting thread 21 .

[0024] Such as Figure 4 As shown, the...

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Abstract

The invention discloses a special drill for geophysical prospecting. The special drill comprises a hollow pipe body, wherein two ends of the hollow pipe body are closed; the hollow pipe body is provided with a plurality of water outlets; the hollow pipe body is further fixedly provided with a hollow drilling rod connecting rod; and the inner cavity of the drilling rod connecting rod is communicated with the inner cavity of the hollow pipe body. The special drill for geophysical prospecting adopts the structure design and adopts a water flushing method as a working principle, so as to completely overturn the working principle of a geophysical prospecting drill and completely prevent an underground pipeline outer layer from being damaged by the geophysical prospecting drill; and the prospecting area of the drill also can be expanded, and the special drill has the beneficial effects of safety, high efficiency and the like.

Description

technical field [0001] The invention relates to the technical field of surveying, in particular to a drill bit for surveying. Background technique [0002] In the current geophysical prospecting work, different survey methods will be adopted according to different situations such as buried depth and pipeline material. For example, for the geophysical prospecting of conventional shallow-buried metal pipelines (generally, the buried depth is within 5 meters), the existing pipeline instrument can be used directly. For deep-buried metal or non-metal pipelines (that is, non-excavation construction pipelines), conventional pipeline instruments cannot detect them, so the technical means of combining drilling rigs with magnetic detectors is generally used. However, for deep-buried non-metallic pipelines or pipelines covered with a layer of insulating material, the combination of drilling with drilling rigs and magnetic detectors cannot effectively and safely achieve the purpose of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/60
Inventor 陶艳娥
Owner SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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