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PDC (Polycrystalline Diamond Compact) bit with different inside and outside and manufacturing method of PDC bit

A manufacturing method and drill bit technology, which is applied in the direction of drill bits, earthwork drilling, drilling equipment, etc., can solve the problems of PDC bit mechanical penetration rate and rock breaking efficiency limitation, so as to improve the overall rock breaking efficiency, eliminate the blocking effect, improve The effect of lateral stability

Active Publication Date: 2022-07-22
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The purpose of the present invention is to provide a PDC drill bit with internal and external differences and a manufacturing method of the PDC drill bit, so as to solve the technical problem that the mechanical speed of penetration and the rock-breaking efficiency of the PDC drill bit are limited.

Method used

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  • PDC (Polycrystalline Diamond Compact) bit with different inside and outside and manufacturing method of PDC bit
  • PDC (Polycrystalline Diamond Compact) bit with different inside and outside and manufacturing method of PDC bit
  • PDC (Polycrystalline Diamond Compact) bit with different inside and outside and manufacturing method of PDC bit

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Embodiment Construction

[0061] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0062] After researching the first situation in the background art, the inventor found that: Figure 3A and Figure 3B The working face 301 of the cutting tooth 30 is shown, the area of ​​the working face 301 of the cutting tooth 30 is the working face of the cutting tooth 30, and the small size of the cutting tooth of working area compared to large size cutters A larger work area will be created. According to formula 2, when th...

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Abstract

The invention provides a PDC drill bit with different inside and outside and a manufacturing method of the PDC drill bit, the PDC drill bit with different inside and outside comprises a drill bit center part and a drill bit shoulder part, the drill bit center part is located in a nose part of a crown curve of the PDC drill bit, and the drill bit shoulder part is located outside the nose part of the crown curve of the PDC drill bit; central part cutting teeth are arranged at the central part of the drill bit, and shoulder part cutting teeth are arranged at the shoulder parts of the drill bit; the average value of the working areas of the center part cutting teeth is smaller than the average value of the working areas of the shoulder part cutting teeth. By means of the PDC drill bit, the technical problem that the mechanical drilling speed and the rock breaking efficiency of the PDC drill bit are limited is solved.

Description

technical field [0001] The invention relates to the technical field of oil and gas drilling, in particular to a PDC drill bit with different inside and outside and a manufacturing method of the PDC drill bit. Background technique [0002] PDC (Polycrystalline Diamond Compact, polycrystalline diamond compact) bits are used to break underground rocks and are the main rock breaking tools in the field of oil and gas drilling engineering. The cutting structure of the PDC bit mainly includes the main cutting teeth and the crown curve. The main cutting teeth refer to the cutting teeth that are located in the first row of each blade of the drill bit and contact the formation first and undertake the main rock breaking task, referred to as the main teeth. The crown curve is a curve enveloped by the highest points of all the main teeth; the gauge part of the drill bit is not included in the crown curve, and the crown curve only involves the part of the main teeth for cutting rock, exc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/54E21B10/43
CPCE21B10/54E21B10/43Y02P70/10
Inventor 刘维未九森高德利
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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