CN203856407U

CN203856407U - High-density tooth-distribution polycrystalline diamond compact drill bit

Info

Publication number: CN203856407U
Application number: CN201420293667.0U
Authority: CN
Inventors: 王郑春; 李建平
Original assignee: Grand Celebration Tianrui Machinery Manufacturing Co Ltd
Current assignee: Grand Celebration Tianrui Machinery Manufacturing Co Ltd
Priority date: 2014-06-04
Filing date: 2014-06-04
Publication date: 2014-10-01
Anticipated expiration: 2024-06-04

Abstract

The utility model provides a high-density tooth-distribution polycrystalline diamond compact drill bit. Four main knife wings and four secondary knife wings extend from a semispherical drill bit crown part of a drill bit body and are evenly distributed around the center of the drill bit, a front row of cutting teeth and a rear row of cutting teeth are distributed on each main knife wing, each front row includes five cutting teeth, and each rear row includes three cutting teeth; a front row of cutting teeth and a rear row of cutting teeth are distributed on each secondary knife wing, each front row includes four cutting teeth, and each rear row includes three cutting teeth; mutually connected reinforcing rings extend from the outer edges of empty grooves between gauge protection blocks on the lower portions of the main knife wings and the secondary knife wings. The high-density tooth-distribution polycrystalline diamond compact drill bit has the advantages that the high-density tooth-distribution drill bit is mainly applied to an oil gas construction stratum of an oil field 3400 meters down, the footage per bit is large, the drilling speed is improved, the average drilling speed can reach 3.2 m/h, drilling can be carried out continuously for 112 hours, the work efficiency is improved by 50%, the occurrence probability of underground accidents is lowered, and use and popularization are facilitated.

Description

High density cloth tooth polycrystalline diamond compact bit

Technical field

The utility model relates to field drilling field of tool, is specifically related to high density cloth tooth polycrystalline diamond compact bit.

Background technology

Polycrystalline diamond compact bit is made up of steel carcass, tungsten carbide sinter layer and the diamond compact that is arranged on tungsten carbide sinter layer, diamond compact affects the performance of drill bit at the cloth tooth of drill bit and the density diameter of tooth, universal law is low-density cloth tooth, low-density cloth tooth is mainly used in harder stratum, oil field, the diamond bit that is applicable to such stratum is generally 35-40 cutter tooth of the four blade wing, creeps into very difficult in the time that low-density cloth tooth is running into underground firm hard formation below 3400 meters.

Summary of the invention

In order to overcome the deficiency in background technology, the utility model proposes high density cloth tooth polycrystalline diamond compact bit and address the above problem.

The technical solution of the utility model is: high density cloth tooth polycrystalline diamond compact bit, comprise drill body, on the spherical drill bit of the semicircle of drill body, extend four operator wings and four secondary wings, the operator wing and secondary wing are evenly distributed around bit central, wherein, two row's cutting teeths before and after arranging on the operator wing, front row is five cutting teeths, rear row is three cutting teeths; Two row's cutting teeths before and after arranging on secondary wing, front row is four cutting teeths, and rear row is three cutting teeths, and the dead slot outward flange between the operator wing and the bottom gauge piece of secondary wing extends interconnective stiffening ring.

The utlity model has following beneficial effect: high density cloth teeth drill bit is mainly used in the following oil gas structure stratum in 3400 meters, oil field, single footage per bit is large, improve rate of penetration, average rate of penetration reaches 3.2 ms/h, can contact and creep into 112 hours, operating efficiency improves 50%, reduces down-hole accident odds, favourable promoting the use of.

brief description of the drawings:

Accompanying drawing 1 is structural representation of the present utility model.

1-drill body in figure, the 2-wing of operating, the secondary wing of 3-, 4-stiffening ring, 5-drill bit, 6-cutting teeth.

detailed description of the invention:

Below in conjunction with accompanying drawing, the utility model is described in further detail:

As shown in Figure 1, high density cloth tooth polycrystalline diamond compact bit, comprise drill body 1, on the spherical drill bit 5 of the semicircle of drill body 1, extend four operator wings 2 and four secondary wings 3, the operator wing 2 and secondary wing 3 are evenly distributed around bit central, wherein, and two row's cutting teeths 6 before and after arranging on the operator wing 1, front row is five cutting teeths 6, and rear row is three cutting teeths 6; Two row's cutting teeths 6 before and after arranging on secondary wing 3, front row is four cutting teeths 6, and rear row is three cutting teeths 6, and the dead slot outward flange between the operator wing 2 and the bottom gauge piece of secondary wing 3 extends interconnective stiffening ring 4.

High density cloth teeth drill bit is mainly used in the following oil gas structure stratum in 3400 meters, oil field, single footage per bit is large, improve rate of penetration, average rate of penetration reaches 3.2 ms/h, can contact and creep into 112 hours, operating efficiency improves 50%, reduces down-hole accident odds, favourable promoting the use of.

Claims

1. a high density cloth tooth polycrystalline diamond compact bit, comprise drill body (1), it is characterized in that: on the spherical drill bit (5) of the semicircle of drill body (1), extend four the operator wings (2) and four secondary wings (3), the operator wing (2) and secondary wing (3) are evenly distributed around bit central, wherein, the upper front and back two row's cutting teeths (6) of arranging of the operator wing (1), front row is five cutting teeths (6), and rear row is three cutting teeths (6); The upper front and back two row's cutting teeths (6) of arranging of secondary wing (3), front row is four cutting teeths (6), rear row is three cutting teeths (6), and the dead slot outward flange between the operator wing (2) and the bottom gauge piece of secondary wing (3) extends interconnective stiffening ring (4).