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Diamond drill bit with high-efficiency water hole structure

A technology of diamond drill bit and water hole, which is applied in the direction of drill bit, drilling equipment, earthwork drilling, etc. It can solve problems such as insufficient cooling, untimely migration of cuttings, and reduced drilling performance of the drill bit, so as to improve utilization efficiency and improve Cooling effect, effect of reducing jet divergence

Pending Publication Date: 2019-08-09
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

It overcomes the insufficient cooling of the existing drill bit in high temperature drilling and the untimely migration of cuttings, thus reducing the drilling performance of the drill bit

Method used

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  • Diamond drill bit with high-efficiency water hole structure
  • Diamond drill bit with high-efficiency water hole structure
  • Diamond drill bit with high-efficiency water hole structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0046] A diamond drill bit with efficient water hole structure, such as figure 1As shown, it includes a drill body 1 and a blade 2 extending from the drill body. The blade 2 includes a blade front side 202 and a blade rear side 203. The blade 2 is also provided with diamond cutting teeth 21 or cutting teeth. Components, water channel grooves 3 are formed between adjacent blades, and it is characterized in that: a rear spray hole seat 4 extending from the drill bit body or connected to the drill bit body 1 is provided in front of at least one of the blades 2, The end face 41 of the rear water spray hole seat 4 is provided with a rear water spray hole communicating with the inner flow channel 101 of the drill bit. That is, in the direction of drill bit rotation, a water hole seat is provided in front of at least one of the blades, and the water hole seat has a water hole that can spray backwards, and the rear water spray hole can directly spray to the cutting teeth on the blade....

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PUM

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Abstract

The invention relates to the technical fields of petroleum and natural gas, mine engineering, geothermal wells, building foundation engineering construction, geology and hydrological drilling, in particular to a diamond drill bit with a high-efficiency water hole structure. According to the diamond drill bit, a rear water spray hole seat extending to a drill bit body or connected to the drill bitbody is arranged in front of at least one of cutter wings, the rear water spray hole seat is provided with a rear water spray hole communicating with a flow channel in the drill bit, and the rear water spray hole can directly spray water onto cutting teeth on the cutter wings or rocks in front of the cutting teeth. According to the diamond drill bit with the high-efficiency water hole structure, the cutting teeth are fully cooled and cuttings are transported in time in high temperature well drilling, and the drilling performance of the drill bit is greatly improved.

Description

[0001] Technical field: [0002] The invention relates to the technical fields of petroleum and natural gas, mining engineering, geothermal wells, building foundation engineering construction, geology, and hydrological drilling, in particular to a diamond drill bit with a high-efficiency water hole structure. [0003] Background technique: [0004] The drill bit is a rock-breaking tool used in drilling engineering to break rock and form a wellbore. In addition to the cutting structure, the hydraulic structure on the drill bit also plays an important role in the rock-breaking efficiency and service life of the drill bit, that is, cooling the cutting teeth, cleaning the bottom of the well, transporting cuttings, and assisting in rock breaking. At present, the design of the hydraulic structure on the drill bit is to arrange nozzles or water holes (water holes) at different positions on the drill bit body, and the drilling fluid or cooling medium in the inner flow channel is spraye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/61E21B10/60E21B10/42
CPCE21B10/61E21B10/60E21B10/42
Inventor 于洪波高清春杨迎新宋东东任海涛张召峰余雷叶西安张昕冉
Owner BC P INC CHINA NAT PETROLEUM CORP
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