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A kind of pdc cutter based on damping structure

A technology of cutting teeth and composite sheets, which is applied in the field of cutting teeth to achieve the effects of reducing impact force, improving impact resistance and life, and improving impact resistance.

Active Publication Date: 2018-01-23
CHENGDU DEEP DIAMOND BIT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there are certain limitations in adjusting the technical scheme of PDC material formula and firing process.

Method used

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  • A kind of pdc cutter based on damping structure
  • A kind of pdc cutter based on damping structure
  • A kind of pdc cutter based on damping structure

Examples

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with accompanying drawing, protection scope of the present invention is not limited to the following:

[0018] Such as figure 1 , figure 2 with image 3 Shown, a kind of PDC cutting tooth based on damping structure, it comprises PDC cutting tooth 4, and described PDC cutting tooth 4 is installed on the bit blade blade 5 of PDC bit 3, and described PDC cutting tooth 4 comprises movable PDC Composite sheet 6, bushing 7, limiter 8 and damper 9, a mounting hole is provided on the bushing 7, and the movable PDC composite sheet 6 is installed in the mounting hole. In this embodiment, the movable PDC composite sheet 6 is made up of polycrystalline diamond 1 and cemented carbide substrate 2, and polycrystalline diamond 1 is positioned at the front end of cemented carbide substrate 2, and described installation hole is circular blind hole, so when movable PDC composite sheet 6 receives During impact, the mo...

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PUM

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Abstract

The invention discloses a PDC cutting tooth based on a damping structure. The PDC cutting tooth comprises PDC cutting tooth bodies (4). The PDC cutting tooth bodies (4) are installed on drill bit wings (5) of a PDC drill bit (3) and comprise movable PDC composite sheets (6), linings (7), limiting devices (8) and dampers (9). Installing holes are formed in the linings (7), the movable PDC composite sheets (6) are installed in the installing holes, limiting grooves (10) are formed in the movable PDC composite sheets (6), limiting holes (11) corresponding to the limiting grooves (10) are formed in the side walls of the linings (7), the limiting devices (8) are inserted into the limiting holes (11), the front ends of the limiting devices (8) are located in the limiting grooves (10), and the dampers (9) are arranged between the bottoms of the installing holes of the linings (7) and the bottoms of the movable PDC composite sheets (6). The PDC cutting tooth has the advantages that impact time is prolonged, impact resistance is high, and the service life is long.

Description

technical field [0001] The invention relates to a cutting tooth on a drilling bit for oil and gas and geological exploration, in particular to a PDC cutting tooth based on a shock absorbing structure. Background technique [0002] PDC polycrystalline diamond composite sheet: polycrystalline diamond composite is a composite material composed of polycrystalline diamond 1 and cemented carbide matrix 2, such as figure 1 shown. It not only has the high hardness of polycrystalline diamond but also has certain toughness and impact resistance. It is an important superhard tool material. The PDC drill bit 3 is a drilling tool that is fixed on the drill bit blade 5 with multiple pieces of PDC4, such as figure 2 shown. At present, due to the good performance of PDC drill bits in terms of wellbore quality, ROP and service life, they are widely used in oil and gas exploration and geological exploration, and have achieved outstanding results. However, the PDC bit is not effective in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B10/46E21B12/00
CPCE21B10/46E21B12/00
Inventor 张建华李宗涛
Owner CHENGDU DEEP DIAMOND BIT
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