Directional double-tooth self-balancing PDC drill bit suitable for soft and hard interlayers

A self-balancing, drill bit technology, used in drill bits, drilling equipment, earthwork drilling, etc., can solve the problems of poor drilling stability, low drilling efficiency, and large lateral force, reducing impact wear and improving rock breaking efficiency. , the effect of reducing lateral vibration

Active Publication Date: 2021-09-17
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of large lateral force, poor drilling stability, and low drilling efficiency of the PDC bit in the soft and hard interlayer in the prior art, the present invention provides a self-balancing PDC bit based on directional double teeth, which reduces the drill bit’s hard and soft interlayer. Lateral force fluctuations in interlayers, improving bit drilling stability

Method used

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  • Directional double-tooth self-balancing PDC drill bit suitable for soft and hard interlayers
  • Directional double-tooth self-balancing PDC drill bit suitable for soft and hard interlayers
  • Directional double-tooth self-balancing PDC drill bit suitable for soft and hard interlayers

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Embodiment 1

[0020] With reference to each figure, a kind of directional double-teeth self-balancing PDC drill bit suitable for soft and hard interlayers, the drill bit includes a drill body 1 and blades 2 and nozzles 3 arranged on the drill body 1; the number of blades 2 is 5, the blade 2 is equipped with a double-tooth structure 4, a front row of single teeth 5, a rear row of conical teeth 6 and a gauge tooth 7, and the rear row of conical teeth 6 is arranged on the same track behind the front row of single teeth 5; The nozzles 3 are arranged in the straight line area and the arc area of ​​the crown of each blade 2; the crown of the blade 2 is a straight line-arc crown, and the cone depth of the crown is moderate; the drill body 1 The lower part is a male joint, and the lower end is provided with a screw thread, and the middle car has a groove for making up the well; the number of the nozzles 3 is 8.

[0021] Take the right horizontal blade as the initial blade, and the blades in the cou...

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Abstract

The invention belongs to the technical field of oil field drilling equipment, and particularly relates to a directional double-tooth self-balancing PDC drill bit suitable for soft and hard interlayers. The drill bit comprises a drill bit body, blades and nozzles, and the blades and the nozzles are arranged on the drill bit body; and the number of the blades is five, double-tooth structures, front-row single teeth, rear-row conical teeth and gauge teeth are distributed on the blades, and the rear-row conical teeth are distributed behind the front-row single teeth on the same rail. The nozzles are distributed in the straight line area and the arc area of the crown part of each blade; the crown part of each blade is a straight line-arc crown part, and the cone depth of each crown part is moderate; and the lower part of the drill bit body is a male joint, the lower end is provided with a thread line, and a groove is turned in the middle part and facilitates screwing on a well. Single-tooth impact abrasion is reduced, and the rock breaking efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of oil field drilling equipment, and in particular relates to a directional double-tooth self-balancing PDC drill bit suitable for soft and hard interlayers. Background technique [0002] The invention belongs to the technical field of oil field drilling equipment, and in particular relates to a directional double-tooth self-balancing PDC drill bit suitable for soft and hard interlayers. Contents of the invention [0003] In order to solve the problems of large lateral force, poor drilling stability, and low drilling efficiency of the PDC bit in the soft and hard interlayer in the prior art, the present invention provides a self-balancing PDC bit based on directional double teeth, which reduces the drill bit’s hard and soft interlayer. Lateral force fluctuations in the interlayer improve the drilling stability of the drill bit. [0004] The technical solution adopted in the present invention is: a directi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/43E21B10/61
CPCE21B10/43E21B10/602E21B10/61
Inventor 李玮盖京明董家盼李卓伦焦圣杰
Owner NORTHEAST GASOLINEEUM UNIV
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