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Combined drill of retractable alternative bit drilling tool core component

A technology for combining parts and replacing drill bits, which is applied in drill bits, drilling equipment, earth-moving drilling and other directions, and can solve problems such as misoperation, easy misjudgment, and increased drilling costs.

Inactive Publication Date: 2016-10-19
郭靖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the domestic geological exploration mainly adopts the tension-free drilling without lifting the drill bit. The cutting surface is too large when the drilling tool is cutting and drilling, and the footage is slow. Or when encountering a leaking layer, it is easy to misjudge or misoperate, thus increasing the drilling cost

Method used

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  • Combined drill of retractable alternative bit drilling tool core component
  • Combined drill of retractable alternative bit drilling tool core component
  • Combined drill of retractable alternative bit drilling tool core component

Examples

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Embodiment Construction

[0017] from figure 1 The installation view of the combined drill bit of the present invention is shown, without mentioning the drilling and changing of the drill bit. The drill tool is composed of the outer tube drill tool 1, the inner tube drill tool 2 and the inner tube assembly 3. The outer tube drill tool 1: the outer tube drill bit body 4 , lower reamer, drill pipe, upper reamer, cartridge chamber and cartridge retainer. Inner pipe drill: inner pipe drill 5. Suspension pipe (suspension pipe: mainly for positioning inner pipe drill and suspension general bearing role) composition.

[0018] from figure 1 As shown in the installation view of the combined drill bit of the present invention: combined drill bit replacement method: 1, salvage the inner pipe assembly 3, 2, salvage the suspension pipe, 3, salvage the inner pipe drill bit 5, 4, put down the inner pipe drill bit 5, 5, after replacement Put down suspension pipe, 6 put down inner pipe assembly 3.

[0019] 2 and 3 s...

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Abstract

Provided is a combined drill of a retractable alternative bit drilling tool core component. The combined drill comprises an outer pipe bit body and an inner pipe bit. Through inclination stop grooves on the front end of the outer pipe bit body, drill teeth of the inner pipe bit is driven to drill.

Description

technical field [0001] The invention relates to the field of geological exploration industry, in particular to a combined drill bit which is a core part of a drill tool without changing the drill bit. Background technique [0002] At present, the domestic geological exploration mainly adopts the tension-free drilling without lifting the drill bit. The cutting surface is too large when the drilling tool is cutting and drilling, and the footage is slow. Or when encountering a leaking layer, it is easy to misjudge or misoperate, thereby increasing the drilling cost. Contents of the invention [0003] The object of the present invention is to provide a combined drill bit with the core part of the core part of the drill without lifting the drill, which is slightly improved and matched with the ordinary rope drill, so as to realize the return of the drill without lifting the drill and reduce the cutting surface of the drill without lifting the drill. To solve the wide problem, ...

Claims

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Application Information

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IPC IPC(8): E21B10/64
Inventor 郭靖
Owner 郭靖
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