Compound single cone bit

A single-cone, compound technology, applied to drill bits, drilling equipment, earthwork drilling and mining, etc., can solve the problems of drill bit mechanical penetration rate reduction, drill bit life reduction, cutting tooth wear, etc., to achieve enhanced rock breaking efficiency and improved breaking efficiency. Rock efficiency, load reduction effect

Active Publication Date: 2011-04-20
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the single cone bit is working at the bottom of the well, the teeth on the cone wear unevenly, and the cutting teeth in the constant contact area (cone tip part) wear faster and most seriously, which reduces the mechanical penetration rate of the bit and reduces the life of the bit

Method used

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  • Compound single cone bit
  • Compound single cone bit
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Examples

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Embodiment Construction

[0027] Such as figure 1 , 3 , shown in 5 and 6: a compound single cone bit, comprising a bit body 1, a cone 2, a cone point 3, the cone 2 and the cone point 3 are arranged with cutting teeth 5, the drill bit The body 1 is provided with a journal 4 , and the cone 2 is connected in rotation with the journal 4 , and the feature is that the cone tip 3 is fixedly connected with the front end of the journal 4 .

[0028] The cutting teeth 5 on the gear tip 3 are polycrystalline diamond composite sheets, polycrystalline diamond composite teeth, thermally stable polycrystalline diamond cutting teeth, natural diamond cutting teeth, impregnated diamond cutting teeth, carbide cutting teeth , cubic boron nitride cutters, ceramic cutters, cutters containing diamond or cubic boron nitride.

[0029] like Figure 7 shown When the drill bit is drilling, driven by the rotation of the bit body 1, the cone 2 revolves around the central axis of the drill bit and at the same time rotates around...

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Abstract

The invention discloses a compound single cone bit comprising a bit body (1), a cone (2) and a cone point (3). Cutting teeth (5) are arranged on the cone (2) and the cone point (3); a shaft neck (4) is arranged on the bit body (1); the cone (2) and the shaft neck (4) are rotatably connected; and the cone point (3) is fixedly connected with the front end of the shaft neck (4). In the invention, the single cone bit is formed by compounding a fixed cutting structure and a non-fixed cutting structure so as to improve the rock removal rate of the bit and prolong the service life of the cutting teeth.

Description

Technical field [0001] The present invention belongs to the field of oil and natural gas, mining engineering, construction basic engineering construction, geology, hydrology and other drilling equipment technology fields. Specific speaking of a composite monolithic drill. [0002] Background technique [0003] The drill bit is a rocking tool used in the drilling project to break the rock and form a well.The single tooth wheel drill is one of the main rocks used in the drilling project, especially in the small well -eye drilling of the deep well in the deep well. [0004] The single tooth wheel drill mainly uses the teeth on the teeth to squeeze the rock to break the rock.The existing monocular wheel drills are non -fixed cutting tooth drills. When the drill bit is rotated, the tooth wheel rotates around the axle and neck.Part of the teeth on the tooth wheel (tip of the tooth wheel) on the tooth wheel of the single tooth wheel drill always contact the rock with the bottom of the w...

Claims

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Application Information

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IPC IPC(8): E21B10/08E21B10/50
CPCE21B10/16E21B10/08
Inventor 陈炼杨迎新林敏任海涛
Owner SOUTHWEST PETROLEUM UNIV
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