Front-back jet polycrystalline compound mono-cone bit

A single-cone, jet-type technology, applied in drill bits, drilling equipment, earth-moving drilling, etc., can solve the problems of poor reliability of fixed composite teeth, difficult to control brazing temperature, and small volume of cones, and achieve the effect of diameter protection. Good, improve the working index of the drill bit, and strengthen the effect of cleaning

Active Publication Date: 2016-08-17
陕西金刚石油机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above two kinds of hybrid drill bits all use cylindrical polycrystalline composite tooth column in manufacture, and there are some shortcomings in the process. One is to braze the horizontal composite tooth column to the cylindrical groove surface of the blade end face, The brazing temperature is not easy to control, and the reliability of...

Method used

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  • Front-back jet polycrystalline compound mono-cone bit
  • Front-back jet polycrystalline compound mono-cone bit
  • Front-back jet polycrystalline compound mono-cone bit

Examples

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Embodiment Construction

[0026] refer to figure 1 , a schematic diagram of the structure of a front and rear injection type polycrystalline composite single cone bit of the present invention, the end of the bit base 2 is provided with a large shaft 15 protruding obliquely inward, the large shaft 15 is provided with a cone 1, and the bit base 2 The interior of the water injection hole 6 and the forward inclined water hole 7 and the rearward inclined water hole 5 communicated with the water injection hole 6 are provided. 15 tends to be opposite. Stretching nozzle 10 is respectively installed in the oblique water hole 7 and the rear stretching oblique water hole 5 before, nozzle 10 is provided with nozzle cover 8 outside, and nozzle sealing ring 9 is installed between nozzle cover 8 and nozzle 10.

[0027] The high-speed mud sprayed from the forward inclined water hole 7 is sprayed on both sides of the cone 1, cleaning the cone 1 and carrying the bottom cuttings back up; the high-speed mud sprayed from ...

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PUM

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Abstract

The invention belongs to the field of petroleum drilling and in particular discloses a front-back jet polycrystalline compound mono-cone bit. The front-back jet polycrystalline compound mono-cone bit comprises a cone (1) and a bit matrix (2), wherein a main shaft (15) extended obliquely inward is arranged at the end part of the bit matrix (2), the cone (1) is arranged on the main shaft (15), a water injection hole (6) as well as a forward diagonal water hole (7) and a backward diagonal water hole (5) communicated with the water injection hole (6) are formed inside the bit matrix (2), dip direction of the forward diagonal water hole (7) is the same with the dip direction of the main shaft (15), and the dip direction of the backward diagonal water hole (5) is opposite to the dip direction of the main shaft (15); and multiple rows of sprocket holes with rotation tracks equally spaced and staggered are arranged on the cone (1), and cutting teeth (22) are arranged in the sprocket holes in an interference manner. According to the scheme of the invention, the front-back jet polycrystalline compound mono-cone bit has the advantages of stable permanent tooth brazing, large cone bearing space, more comprehensive rock breaking and the like.

Description

technical field [0001] The invention relates to the field of oil drilling, in particular to a front and rear injection polycrystalline composite single-cone drill bit. Background technique [0002] In the past few years, the hybrid drill bit used in the field of rock drill bits has the combined rock breaking technology of roller cone bit teeth and PDC bit teeth, which improves the working index of the drill bit and reduces the drilling cost. It is the latest development of the two technologies of the drill bit. [0003] Patent number: 200880016630, the name of the patent is "a hybrid drill and its drilling method"; patent number: 2012105525560, the name of the patent is "a hybrid drill with enhanced core cutting function". [0004] The above two kinds of hybrid drill bits all use cylindrical polycrystalline composite tooth column in manufacture, and there are some shortcomings in the process. One is to braze the horizontal composite tooth column to the cylindrical groove sur...

Claims

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Application Information

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IPC IPC(8): E21B10/18E21B10/16E21B10/22E21B10/25E21B10/24E21B10/50
CPCE21B10/16E21B10/18E21B10/22E21B10/24E21B10/25E21B10/50
Inventor 孙泰林刘新军尚明张鹏
Owner 陕西金刚石油机械有限公司
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