Drill bit and drilling device

A drill bit and bit body technology, which is applied in the direction of drill bit, drilling equipment, and vibration drilling, etc., can solve the problems of unsatisfactory drilling effect, easy failure of drilling tools, and increased drilling cost, so as to prolong the life of the drill bit and improve drilling efficiency , The effect of reducing drilling costs

Pending Publication Date: 2020-08-04
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In deep medium-hard and hard formations, the drilling effect of this drilling method is not very ideal, and severe wear of drilling tools often occurs, and the temperature and pressure at the bottom of the hole are too high, resulting in easy failure of drilling tools, etc., which increases drilling costs and reduces drilling efficiency

Method used

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  • Drill bit and drilling device
  • Drill bit and drilling device
  • Drill bit and drilling device

Examples

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Embodiment Construction

[0025] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0026] figure 1 It is a structural schematic diagram of a drill bit shown according to an exemplary embodiment, such as figure 1 As shown, the drill bit includes a joint 11 and a drill bit body 12 .

[0027] Such as figure 1 As shown, the joint 11 is provided with a hydraulic oscillation chamber 13, and the hydraulic oscillation chamber 13 is used to make the drilling fluid flowing ...

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Abstract

The invention discloses a drill bit and a drilling device. The drill bit comprises a joint and a drill bit body; a hydraulic oscillation cavity is formed in the joint, and used for making drilling fluid flowing into the hydraulic oscillation cavity form a self-excited oscillation effect in the hydraulic oscillation cavity, pressure fluctuation is generated, the longitudinal vibration of the drillbit is driven, the drill bit transmits high-frequency vibration to rocks in contact, and thus inducing the rocks to undergo resonance failure and assisting the drill bit to break the rocks; and a nozzle is arranged in a drill bit body, an outlet of the hydraulic oscillation cavity communicates with the nozzle, and the nozzle is used for ejecting the drilling fluid flowing out of the hydraulic oscillation cavity out the drill bit. According to the technical scheme, the rock breaking speed can be increased, the service life of drilling tools is prolonged, a smooth and stable borehole is advantageously formed, and the drilling efficiency is improved.

Description

technical field [0001] The present disclosure relates to the field of drilling and rock breaking technology, in particular to a drill bit and a drilling device. Background technique [0002] With the development of my country's oil and gas exploration and development to the deep and western areas with complex geological conditions, the problem of slow drilling speed of deep wells has become increasingly prominent, which has a great impact on the overall well construction cycle and drilling costs. How to increase the drilling speed of deep and ultra-deep wells is one of the major technical problems that need to be solved urgently in the field of drilling engineering. Foreign research and practice have shown that if the drilling efficiency is doubled, the total drilling cost can be reduced by about 25%. Therefore, the increase in drilling speed is of great value for reducing drilling costs, maximizing benefits and scientific production. One of the key measures to increase the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/00E21B10/61E21B7/18E21B7/24
CPCE21B7/18E21B7/24E21B10/00E21B10/61
Inventor 纪国栋汪海阁武强崔猛崔柳孟昭赵飞郭卫红张佳伟周翠平
Owner BC P INC CHINA NAT PETROLEUM CORP
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