Telescopic crushing type PDC drill bit for petroleum drilling and using method

A technology for oil drilling and drill bits, which is applied in the direction of drill bits, drilling equipment, drill pipes, etc. It can solve the problems of poor connection strength between the broken drill bit and the drill bit body, and the failure of the crushing ability to achieve the expected effect, so as to reduce drilling costs and reduce diversity. , the effect of improving durability

Active Publication Date: 2021-09-21
SHANDONG JINRUI PETROLEUM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its existing problems are: its ejection mechanism pushes out the broken bit as a whole, the connection strength between the broken bit and the bit body is not good, and the cutting contour surface of the protruding broken bit is a spherical crown surface, and its crushing capacity cannot meet expectations Effect

Method used

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  • Telescopic crushing type PDC drill bit for petroleum drilling and using method
  • Telescopic crushing type PDC drill bit for petroleum drilling and using method
  • Telescopic crushing type PDC drill bit for petroleum drilling and using method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1, with reference to Figure 1-Figure 6 , a retractable broken PDC drill bit for oil drilling mentioned in the present invention, including a drill body 1, a fixed wing 2, a nozzle 3, a fixed cylinder 4, a connecting cylinder 5, a tapered pipe thread cylinder 6, a movable wing assembly 9 and an adjustment component 10;

[0031] Further, there are three groups of fixed wings 2, three groups of fixed wings 2 are coated on the outer wall and top of the drill body 1, a cavity is arranged inside the drill body 1, and three groups of nozzles 3 are provided, and the three groups of nozzles 3 are all threaded on the drill body 1 top and communicates with the cavity of the drill body 1, the fixed cylinder 4 is fixedly connected in the cavity of the drill body 1, the connecting cylinder 5 is fixedly connected at the bottom of the drill body 1, the tapered pipe thread cylinder 6 is fixedly connected at the bottom of the connecting cylinder 5, and the drill body 1 The o...

Embodiment 2

[0042] Embodiment 2, a retractable crushing PDC drill bit for oil drilling mentioned in the present invention, including a drill body 1, a fixed wing 2, a nozzle 3, a fixed cylinder 4, a connecting cylinder 5, a tapered pipe threaded cylinder 6, and a movable wing assembly 9 and adjustment assembly 10;

[0043] The difference from Example 1 is:

[0044] There are four groups of fixed wings 2, and the four groups of fixed wings 2 are covered on the outer wall and top of the drill body 1. There is a cavity inside the drill body 1. There are four groups of nozzles 3, and the four groups of nozzles 3 are all threaded on the drill body 1. The top is also in communication with the cavity of the drill body 1, the fixed cylinder 4 is fixedly connected in the cavity of the drill body 1, the connecting cylinder 5 is fixedly connected at the bottom of the drill body 1, the tapered pipe thread cylinder 6 is fixedly connected at the bottom of the connecting cylinder 5, and the drill body 1...

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Abstract

The invention discloses a PDC drill bit technology for petroleum drilling, and particularly discloses a telescopic crushing type PDC drill bit for petroleum drilling and a using method. According to the technical scheme, the telescopic crushing type PDC drill bit comprises a drill bit body, three sets of fixed wings, a fixed cylinder, a connecting cylinder and a taper pipe threaded cylinder, wherein the three sets of fixed wings wrap the outer wall and the top of the drill bit body, the fixed cylinder is fixedly connected into the drill bit body, the connecting cylinder is fixedly connected to the bottom of the drill bit body, the taper pipe threaded cylinder is fixedly connected to the bottom of the connecting cylinder, and the drill bit body is further provided with a movable wing assembly and an adjusting assembly. The telescopic crushing type PDC drill bit has the beneficial effects that the structure is reasonable, the adjusting assembly can be used for adjusting the movable wing and the fixed wings to conduct drilling simultaneously or the fixed wings to conduct drilling independently according to the drilling requirements before drilling, using is flexible, the drilling requirements can be met through the single PDC drill bit, the drilling cost is reduced, meanwhile, the diversity of the PDC drill bit is also reduced, and the production cost of the PDC drill bit is indirectly reduced.

Description

technical field [0001] The invention relates to the PDC drill bit technology for oil drilling, in particular to a retractable crushing PDC drill bit for oil drilling and a use method thereof. Background technique [0002] The PDC drill bit is formed by making a thin disc polycrystalline diamond into a small cutting block or sintered on the drill bit body. Because of its excellent anti-grinding and impact resistance, it is widely used in the field of oil drilling. PDC composite The chip is a new type of functional material. It is a composite superhard material sintered under ultra-high pressure and high temperature conditions by using diamond micropowder and cemented carbide substrate. It not only has the high hardness, high wear resistance and thermal conductivity of diamond, but also has the hardness The alloy's strength and impact toughness make it an excellent material for cutting tools and wear-resistant tools. [0003] At present, there are many kinds of PDC bits on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/43E21B10/62E21B10/60E21B17/042
CPCE21B10/43E21B10/62E21B10/602E21B17/042
Inventor 王英明巴德军赵志刚
Owner SHANDONG JINRUI PETROLEUM EQUIP CO LTD
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