The anti-mud bag pdc drill bit with through pits on the surface of the runner

A technology of pits and drill bits, which is used in drill bits, drilling equipment, earth-moving drilling, etc. to achieve the effects of reducing viscosity and resistance, preventing accumulation and preventing adhesion.

Active Publication Date: 2016-04-20
四川川石金刚石钻头有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, to provide an anti-balling PDC drill bit with a through pit on the surface of the flow channel, which solves the problem of anti-balling of the PDC bit, thereby improving drilling efficiency and reducing drilling costs

Method used

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  • The anti-mud bag pdc drill bit with through pits on the surface of the runner
  • The anti-mud bag pdc drill bit with through pits on the surface of the runner

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Embodiment Construction

[0025] The present invention will be further described below in combination with specific embodiments and accompanying drawings.

[0026] see figure 1 and figure 2 , a kind of anti-mud bag PDC drill bit with penetrating pits on the surface of the flow channel, comprising a drill body 2, the lower part of the drill bit body 2 is provided with a threaded joint 3 for connecting a drill pipe, and the upper part is provided with a plurality of blades 4, between the blades 4 The grooves of the drill bit form the flow channel groove 5, and the entire surface of the flow channel groove 5 is provided with pits 1 that communicate with each other.

[0027] The PDC drill bit can also be provided with interpenetrating pits 1 only on the surface of the runner groove 5, that is, only the surface of the runner groove 5 on the front side of the blade is provided with the interpenetrating pits 1 or only on the runner groove 5. The bottom surface of the blade is provided with inter-connected ...

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Abstract

The invention discloses a balling-resistant PDC (polycrystalline diamond compact) drill bit with communicated pits in the surfaces of flow channels. The balling-resistant PDC drill bit comprises a drill bit body. A threaded connector connected with a drill pipe is arranged on the lower portion of the drill bit body, a plurality of blades are arranged on the upper portion of the drill bit body, grooves formed in positions among the blades form flow channel grooves of the drill bit, and the pits which are communicated with one another are arranged on parts or all of the surfaces of the flow channel grooves. Compared with a conventional PDC drill bit, the balling-resistant PDC drill bit with the communicated pits in the surfaces of the flow channels has the advantages that the quantity of rock debris adhered on the flow channel grooves can be obviously reduced, blockage of the flow channels can be prevented, the purpose of balling resistance can be achieved, accordingly, the drilling efficiency of the drill bit can be improved, and the well drilling cost can be reduced.

Description

technical field [0001] The invention belongs to the technical fields of drilling equipment such as petroleum and natural gas, mining engineering, building foundation engineering construction, geology, hydrology, etc., and particularly relates to an anti-mud bag PDC drill bit with through pits on the surface of the flow channel. Background technique [0002] PDC bit is a kind of drill bit that uses polycrystalline diamond composite sheet (that is, PDC tooth, also referred to as cutting tooth or tooth) to scrape or shear rock. It is one of the main rock-breaking tools used in drilling engineering today. , especially in the drilling of medium and soft formations, PDC bits are used the most. In order to make the cutting structure and hydraulic structure of the drill bit achieve better working results, when designing and manufacturing the drill bit, the PDC teeth are usually divided into several groups according to certain rules, and the PDC teeth of the same group are consolidat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B10/60
Inventor 杨迎新秦晓庆王希勇林敏陈炼任海涛周春晓包泽军
Owner 四川川石金刚石钻头有限公司
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