Drill bit with string-shaped water pores

A water hole and drill bit technology, applied in drill bits, drilling equipment, earth-moving drilling, etc., can solve the problems of reducing the drilling performance and service life of the drill bit, unreasonable hydraulic structure, etc., so as to increase the design flexibility and improve the hydraulic matching. , Optimize the effect of the hydraulic structure and flow field of the drill bit

Active Publication Date: 2015-05-13
SOUTHWEST PETROLEUM UNIV +1
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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 above-mentioned deficiencies in the prior art, propose a drill bit with string-like water holes, and solve the problem of reducing the drilling performance and use of the drill bit due to the unreasonable hydraulic structure of the drill bit in rapid drilling and high-temperature well drilling. The problem of longevity

Method used

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  • Drill bit with string-shaped water pores
  • Drill bit with string-shaped water pores
  • Drill bit with string-shaped water pores

Examples

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Embodiment Construction

[0045] The following non-limiting examples illustrate the invention.

[0046] Basic example: eg figure 1 , figure 2 , Figure 6 As shown, a drill bit with a series of water holes includes a drill body 1, a cutting structure 2 arranged on the drill body 1, cutting teeth 4 are arranged on the cutting structure 2, chip removal grooves 3 and Runner 12, the runner 12 is provided with the water hole 5, and this water hole 5 has at least one to be the string water hole, and the string shape water hole refers to the longitudinal section shape of the length direction of the water hole is that the mouth is big and the bottom is small. Fan-shaped or fan-like (or radial shape, see Figure 6 That is, the longitudinal section in the length direction), and the outlet of the water hole is in a string shape (formed by at least two circles or ellipses connected together, as the name implies, it is a series of several circles or ellipses connected directly or indirectly in the usual sense, ...

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Abstract

The invention discloses a drill bit with string-shaped water pores and relates to the drill bit with a novel hydraulic structure. The drill bit comprises a drill bit body and cutting structures arranged on the drill bit body, cutting teeth are arranged on the cutting structures, chip grooves and flow paths are arranged among the cutting structures, the water pores are arranged in the flow paths, at least one of the water pores is the string-shaped water pore, the outlet of the string-shaped water pore is formed by at least two circles or ellipses in communication, and the longitudinal section shape of each string-shaped water pores in the lengthwise direction is fan-shaped or nearly fan-shaped in a manner of being larger in the opening and smaller at the bottom. By the arrangement, problems that drilling performance of the drill bit is lowered and service life of the drill bit is shortened due to unreasonable hydraulic structure of the drill bit in rapid drilling and high-temperature drilling are solved.

Description

technical field [0001] The invention belongs to the technical fields of drilling such as petroleum and natural gas, mining engineering, geothermal well, building foundation engineering construction, geology, hydrology, etc., and in particular relates to a drill bit with a novel hydraulic structure. Background technique [0002] The drill bit is a rock-breaking tool used in drilling engineering to break rocks to form a wellbore. The hydraulic structure of the drill bit is an important factor determining the drilling performance of the drill bit. When the drill bit breaks the rock and drills, the drilling fluid (fluid) is sprayed to the bottom of the well from the inner channel of the drill bit through the water hole of the drill bit. cuttings, cooling and cleaning the cutting teeth, and assisting in rock breaking. In the modern rapid drilling technology, the drill bit is required to have an excellent rock breaking and cutting structure, and at the same time, the drill bit is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/61
CPCE21B10/602
Inventor 林敏张伟峰杨迎新况雨春陈炼张春亮黄奎林左龙
Owner SOUTHWEST PETROLEUM UNIV
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