A kind of retractable crushing type pdc drill bit for oil drilling and using method

A technology for oil drilling and drill bits, which is applied in drill bits, drilling equipment, drill pipes, etc., can solve the problems of poor connection strength between the broken drill bit and the drill bit body, and the crushing ability cannot achieve the expected effect, so as to reduce drilling costs and reduce diversity. , to meet the effect of crushing needs

Active Publication Date: 2021-11-02
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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  • A kind of retractable crushing type pdc drill bit for oil drilling and using method
  • A kind of retractable crushing type pdc drill bit for oil drilling and using method
  • A kind of retractable crushing type pdc drill bit for oil 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 oil drilling, and particularly discloses a retractable broken PDC drill bit for oil drilling and its use method. Conical pipe thread cylinder, the fixed wings are provided with three sets, the three sets of fixed wings are coated on the outer wall and top of the drill body, the fixed cylinder is fixedly connected in the drill body, the connecting cylinder is fixedly connected at the bottom of the drill body, the tapered pipe thread cylinder It is fixedly connected to the bottom of the connecting cylinder, and the drill bit body is also provided with a movable wing assembly and an adjustment assembly. The beneficial effects of the present invention are: its structure is reasonable, before drilling, the adjusting assembly can be used to adjust the movable wing and the fixed wing to drill simultaneously or the fixed wing to drill separately according to the drilling requirements, flexible to use, and a single PDC drill bit can meet the drilling needs, reducing the The drilling cost is reduced, and the diversity of the PDC bit is also reduced, which indirectly reduces the production cost of the PDC bit.

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 Patents(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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