CN205206748U

CN205206748U - Novel diamond compact piece drill bit

Info

Publication number: CN205206748U
Application number: CN201520968002.XU
Authority: CN
Inventors: 王晓宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-11-30
Filing date: 2015-11-30
Publication date: 2016-05-04
Anticipated expiration: 2025-11-30

Abstract

The utility model provides a novel diamond compact piece drill bit belongs to a probing apparatus, and it has a bit body, and the top surface of bit body has a plurality of top surface cutting teeths, has first row fore -and -aft tangent plane type cutting teeth on a plurality of gage surfaces of bit body side respectively, and there is a wear -resistant material strip back of first row of tangent plane type cutting teeth first row of tangent plane type cutting teeth have the second to arrange tangent plane type cutting teeth at the back, the position of the cutting teeth on the cutting teeth on the tangent plane type cutting teeth was arranged to the second position and the first row of tangent plane type cutting teeth is vertically crisscross. Tangent plane type cutting teeth is arranged owing to increased the second to this kind of drill bit, and its position and original first row tangent plane type cutting gear position put vertical crisscrossly, and the moving trajectory of two rows of tangent plane type cutting teeths can compensate each other, plays the duplicate protection effect, and the wearing and tearing that have alleviateed the gage surface have slowed down the bit body undergauge to improve drilling life of bit, accelerated well drilling speed. And manufacturing cost increases seldom, has reduced drilling operation's manufacturing cost.

Description

A kind of Novel polycrystalline diamond compact drill bit

Technical field

The utility model provides a kind of probing apparatus, especially a kind of drill bit.

Background technology

Diamond compact bit belongs to one-piece drill bit, and whole drill bit does not have movable component, relatively simple for structure, is widely used in oil well, the natural gas well, coal bed gas well and other mine, and the drilling well of well, detecting shaft etc.Existing this drill bit, the gage surface of bit body is only provided with row's tangent plane type cutting teeth.Due to certain distance alternate between each cutting teeth, in drilling process, surrounding rock mass can form heavy wear to the external diameter at tangent plane type cutting teeth position that do not have on bit body, occurs zanjon.Bit body on gage surface loses protection, and the borehole wall can cause bit body undergauge to the wearing and tearing of bit body gage surface, levigate fast, and the well head that the drill bit attenuated gets out also attenuates thereupon.If well head narrows down to a certain degree, just sleeve pipe cannot be entered down.Such drill bit cannot continue to use, and application life is short.For Shaanganning area, in the oilwell drilling operation within 3000 meters, the drill bit of existing structure, uses about 5 times only.In the area such as Xinjiang, Sichuan, bung down and just need with 5 to 10 drill bits, even more.Cost in drilling well shared by drill bit consumption is higher.And the main material casting bit body is valuable non-ferrous metal tungsten and copper, this can cause a large amount of consumption of these precious metals.

Summary of the invention

Technical problem to be solved in the utility model is, provides a kind of Novel polycrystalline diamond compact drill bit, to improve its application life.

The utility model realizes like this, a kind of Novel polycrystalline diamond compact drill bit, it has bit body, the end face of bit body has multiple end face cutting teeth, multiple gage surfaces of bit body side there is respectively longitudinal first row tangent plane type cutting teeth, high-abrasive material bar is had after first row tangent plane type cutting teeth, after described first row tangent plane type cutting teeth, have second row tangent plane type cutting teeth, the position of the cutting teeth on the position of the cutting teeth on second row tangent plane type cutting teeth and first row tangent plane type cutting teeth is longitudinally staggered.

Described high-abrasive material bar 4 has two, and Article 1 is between described two row's tangent plane type cutting teeths, and Article 2 is positioned at after second row tangent plane type cutting teeth.

Adopt the diamond compact bit of said structure; owing to adding second row tangent plane type cutting teeth; and its position and original first row tangent plane type cutting teeth position are longitudinally staggered; the running orbit of two row's tangent plane type cutting teeths can make up mutually; play double protection, alleviate the wearing and tearing of gage surface, slow down bit body undergauge; thus improve drilling life of bit, accelerate bit speed.And manufacturing cost increases seldom, takes full advantage of the use value of bit body, effectively can save the consumption of non-ferrous metal tungsten, copper, reduce the cost of production of drillng operation.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the utility model structure.

Detailed description of the invention

The embodiment provided below in conjunction with accompanying drawing further illustrates the concrete structure of utility model.

As shown in drawings, a kind of Novel polycrystalline diamond compact drill bit of the utility model, it has bit body 1, the end face of bit body has multiple end face cutting teeth 6, multiple gage surfaces 2 of bit body side there is respectively longitudinal first row tangent plane type cutting teeth 3, high-abrasive material bar 4 is had after first row tangent plane type cutting teeth, below have second row tangent plane type cutting teeth 5 at described first row tangent plane type cutting teeth 3, the position of the cutting teeth on second row tangent plane type cutting teeth longitudinally interlocks with the position of the cutting teeth on first row tangent plane type cutting teeth.

The same with existing diamond compact bit, the bit body of the utility model comprises bit matrix, wing, runner etc.During drilling well, the direction of rotation of bit body, when accompanying drawing shows, is rotate to the right from the left side of paper.Like this, the left side of the first row tangent plane type cutting teeth 3 below namely under state shown in accompanying drawing of first row tangent plane type cutting teeth 3.Due on each gage surface of bit body; add second row tangent plane type cutting teeth; and its position and original first row tangent plane type cutting teeth position are longitudinally staggered; like this, the running orbit of two row's cutting teeths can make up mutually, the protection of original tangent plane type cutting teeth not having tangent plane type cutting teeth position to be increased newly; alleviate the wearing and tearing at these positions; play double protection, slow down bit body undergauge, thus improve application life.Obviously, the position of the cutting teeth on two row's tangent plane type cutting teeths, it would be desirable and the running orbit of two row's cutting teeths can be made completely mutually to make up, without omitting, not staying any dead angle.

When making mould to cast bit body, the second row Adamas cutting tooth position increased, that places the graphite material of same shape and size replaces real diamond chip for sheet.Account for space to genuine diamond chip for sheet in casting process.After bit body has been cast, picking for sheet, with silver solder this row's tangent plane type cutting teeth set up being inlayed and welding.

Described high-abrasive material bar 4 has two, and Article 1 is between described two row's tangent plane type cutting teeths, and Article 2 is positioned at after second row tangent plane type cutting teeth.Like this, by the position reasonable Arrangement of high-abrasive material bar 4, also abrasion resistant effect can be improved.

The technical scheme of the drill bit of the utility model is applicable to all matrix drill bits.Test shows, uses the drill bit of this technical scheme, and use after twice, bit body gage surface is still intact, and bit speed improved about 20% than in the past.In the oil well drilling operation of Shaanganning area, a drill bit can use more than 8 times.

Claims

1. a Novel polycrystalline diamond compact drill bit, it has bit body (1), the end face of bit body has multiple end face cutting teeth (6), multiple gage surfaces (2) of bit body side there is longitudinal first row tangent plane type cutting teeth (3) respectively, high-abrasive material bar (4) is had after first row tangent plane type cutting teeth, it is characterized in that, below have second row tangent plane type cutting teeth (5) in described first row tangent plane type cutting teeth (3), the position of the cutting teeth on second row tangent plane type cutting teeth longitudinally interlocks with the position of the cutting teeth on first row tangent plane type cutting teeth.

2. Novel polycrystalline diamond compact drill bit as claimed in claim 1, it is characterized in that, described high-abrasive material bar (4) has two, and Article 1 is between described two row's tangent plane type cutting teeths, and Article 2 is positioned at after second row tangent plane type cutting teeth.