CN206144473U

CN206144473U - Ridged tooth structure PDC drill bit

Info

Publication number: CN206144473U
Application number: CN201621074384.2U
Authority: CN
Inventors: 刘志鹏; 闭磊
Original assignee: CHENGDU BEST DIAMOND BIT CO LTD
Current assignee: CHENGDU BEST DIAMOND BIT CO LTD
Priority date: 2016-09-23
Filing date: 2016-09-23
Publication date: 2017-05-03
Anticipated expiration: 2026-09-23

Abstract

The utility model discloses a ridged tooth structure PDC drill bit, including joint, base member, nozzle, ridged tooth, conventional cutting teeth, wing and guarantor footpath piece, being equipped with the base member on the joint, being equipped with a plurality of wings on the base member, the bottom of wing is equipped with protects the footpath piece, adjacent be equipped with the nozzle between the wing, be equipped with the ridged tooth on the interior pyramis of wing, it is protruding that the surface of ridged tooth is equipped with the spine form, and conventional cutting teeth sets up in the nasal part and outer shoulder of wing, and the initiative of every wing is protected directly the position and is arranged a conventional cutting teeth at least, the beneficial effects of the utility model are that: the efficiency of aggressive and the broken rock of drill bit is improved, the mechanical drilling speed of drill bit with prevent that the mud drum ability gets a promotion, improved instrument face stability and the life of drill bit in directional drilling.

Description

A kind of ridged toothing PDC drill bit

Technical field

The utility model is related to a kind of drill bit, specifically a kind of ridged toothing PDC drill bit.

Background technology

PDC (composite polycrystal-diamond) drill bit is the important tool of natural petroleum gas field drilling well.PDC of good performance Drill bit is obtained in that high rate of penetration, the drilling depth of length and good controllability, so as to drilling well integrated cost is greatly reduced.And bore The performance of head is largely determined by cutting tooth performance again.

The generally planar structure of working face of the conventional cutting tooth for using at present.In drilling process, in the pressure of the drill and moment of torsion Under double action, drill bit is pierced and scraped cuts stratum, and this rock breaking mechanism has very high speed in the low soft formation of compression strength Degree advantage, but in the high hard formation application of compression strength, conventional cutting tooth is difficult to pierce stratum, while in high rotating speed bar Under part, conventional cutting tooth easilys lead to it and collapses loss effect with the high shock loading produced by hard formation repeated stock；Easy In the mud shale drilling that aquation is decomposed, landwaste expulsion efficiency is low, is easily compacted in the accumulation of conventional cutting tooth working face, causes drill bit mud Bag；Meanwhile, in directional inclination application, conventional cutting tooth scrapes the working mechanism that cuts through rock so that drilling tool bears higher anti-twisted Square, is easily caused crooked well construction kit face unstability.PDC drill bit using conventional cutting tooth is boring in fact these short slab restrictions in application The further genralrlization application of PDC drill bit.

Utility model content

The purpose of this utility model is to provide a kind of ridged toothing PDC drill bit, to solve above-mentioned background technology in carry The problem for going out.

For achieving the above object, the utility model provides following technical scheme：

A kind of ridged toothing PDC drill bit, including joint, matrix, nozzle, ridged teeth, conventional cutting tooth, wing and gauge Block, the joint is provided with matrix, and matrix is provided with multiple wings, and the bottom of wing is provided with gauge block, the adjacent wing Between be provided with nozzle；The interior tapering of the wing is provided with ridged teeth, and the surface of ridged teeth is provided with ridge, conventional cutting tooth The nose and outer shoulder of wing are arranged at, a conventional cutting tooth is at least arranged at the active gage position of each wing.

As further program of the utility model：The ridged teeth is arranged in the nose of wing, conventional cutting tooth arrangement In the interior tapering of wing and outer shoulder.

As the utility model further scheme：Ridged teeth is arranged in the outer shoulder of wing, conventional cutting tooth arrangement In the interior tapering of wing and nose.

As the utility model further scheme：Ridged teeth is arranged in interior tapering, nose and the outer shoulder of wing.

As the utility model further scheme：Ridged teeth is alternately arranged the inner cone in wing with conventional cutting tooth Portion, nose and outer shoulder, and the tooth top of ridged teeth is contour with the tooth top of conventional cutting tooth.

As the utility model further scheme：Ridged teeth is alternately arranged the inner cone in wing with conventional cutting tooth Portion, nose and outer shoulder, and the tooth top of ridged teeth is higher than the tooth top of conventional cutting tooth.

Compared with prior art, the beneficial effects of the utility model are：The working face of ridged teeth is in ridge, is contributed to The performance of drill bit is lifted from the following aspect：(1) ridged teeth is less with the contact area on stratum, under the conditions of identical the pressure of the drill Compare conventional cutting tooth to be more prone to pierce stratum, improve the aggressiveness of drill bit；

(2) ridged teeth has plow concurrently to stratum and scrapes the effect of cutting, and product is more easy at cutting edge position under identical torque conditions Raw stress concentration, improves the efficiency of breaking rock of drill bit；

(3) side of ridged teeth and the certain hypsokinesis angle of its direction of advance self-assembling formation so that the landwaste for crushing is more Easily discharge to cutting tooth both sides, it is to avoid accumulation and compacting of the landwaste in cutting tooth working face, the rate of penetration of drill bit and anti- Mud drum ability gets a promotion；

(4) the high broken rock stress that ridged teeth is produced makes the pressure of the drill and torque ratio needed for its broken equal-volume rock routinely cut Cut that dental transition is little, reduce the reaction torque that drilling tool is born, improve instrument face stability of the drill bit in directional drilling；

(5) ridge structure causes cutting tooth to have thicker diamond layer thickness, improves the shock resistance of cutting tooth, Be conducive to making tooth keep prolonged sharp state, improve the service life and rate of penetration of drill bit.

Description of the drawings

Fig. 1 is a kind of structural representation of ridged toothing PDC drill bit.

Fig. 2 is the schematic diagram that ridged teeth is arranged at drill bit inner cone position.

Fig. 3 is the schematic diagram that drill bit nose arranges ridged teeth.

Fig. 4 is the schematic diagram that the outer shoulder of drill bit arranges ridged teeth.

Fig. 5 is drill bit inner cone, nose, the schematic diagram of outer shoulder arrangement ridged teeth.

Fig. 6 is ridged teeth and conventional cutting tooth arranged for interval and the contour cloth tooth schematic diagram of the two tooth top.

Fig. 7 is ridged teeth and conventional cutting tooth arranged for interval and the not contour cloth tooth schematic diagram of the two tooth top.

In figure：1- joints, 2- matrixes, 3- nozzles, 4- ridged teeths, 5- routine cutting tooths, 6- wings, 7- gauge blocks.

Specific embodiment

The technical scheme of this patent is described in more detail with reference to specific embodiment.

Refer to Fig. 1-2, a kind of ridged toothing PDC drill bit, including joint 1, matrix 2, nozzle 3, ridged teeth 4, routine Cutting tooth 5, wing 6 and gauge block 7, the joint 1 is provided with matrix 2, and matrix 2 is provided with multiple wings 6, the bottom of wing 6 Gauge block 7 is provided with, between the adjacent wing 6 nozzle 3 is provided with；The interior tapering of the wing 6 is provided with ridged teeth 4, conventional Cutting tooth 5 is arranged and the nose of wing 6 and outer shoulder, and the surface of ridged teeth 4 is ridge, contact of the ridged teeth 4 with stratum Area is less, conventional cutting tooth is compared under the conditions of identical the pressure of the drill and is more prone to pierce stratum, improves the aggressiveness of drill bit； The active gage position of each wing 6 at least arranges that a conventional cutting tooth 5 scrapes the borehole wall to repair, it is ensured that hole quality.

Fig. 3 is referred to, the ridged teeth 4 is arranged in the nose of wing 6, and conventional cutting tooth 5 is arranged in the interior tapering of wing 6 With outer shoulder.

Refer to Fig. 4, ridged teeth 4 is arranged in the outer shoulder of wing 6, conventional cutting tooth 5 be arranged in the interior tapering of wing 6 and Nose.

Fig. 5 is referred to, ridged teeth 4 is arranged in interior tapering, nose and the outer shoulder of wing 6.

Fig. 6 is referred to, ridged teeth 4 is alternately arranged in the interior tapering of wing 6, nose and outer shoulder with conventional cutting tooth 5, and The tooth top of ridged teeth 4 is contour with the tooth top of conventional cutting tooth 5.

Fig. 7 is referred to, ridged teeth 4 is alternately arranged in the interior tapering of wing 6, nose and outer shoulder with conventional cutting tooth 5, and The tooth top of ridged teeth 4, should be according to different formation lithologies, BHA, brill in drill bit design higher than the tooth top of conventional cutting tooth 5 The preferably different ridged teeth configuration mode such as well parameter, so that the service life of drill bit, rate of penetration, guidance capability etc. are comprehensive Can be optimal.

Better embodiment in the face of this patent is explained in detail, but this patent is not limited to above-mentioned embodiment, In the ken that one skilled in the relevant art possesses, can be making on the premise of without departing from this patent objective Various change.

Claims

1. a kind of ridged toothing PDC drill bit, including joint, matrix, nozzle, ridged teeth, conventional cutting tooth, wing and gauge Block, it is characterised in that the joint is provided with matrix, matrix is provided with multiple wings, and the bottom of wing is provided with gauge block, adjacent The wing between be provided with nozzle；The interior tapering of wing is provided with ridged teeth, and the surface of ridged teeth is provided with ridge, conventional Cutting tooth is arranged at the nose of wing and outer shoulder, and a conventional cutting tooth is at least arranged at the active gage position of each wing.

2. a kind of ridged toothing PDC drill bit according to claim 1, it is characterised in that the ridged teeth is arranged in knife The nose of the wing, conventional cutting tooth is arranged in the interior tapering of wing and outer shoulder.

3. a kind of ridged toothing PDC drill bit according to claim 1, it is characterised in that ridged teeth is arranged in wing Outer shoulder, conventional cutting tooth is arranged in the interior tapering of wing and nose.

4. a kind of ridged toothing PDC drill bit according to claim 1, it is characterised in that ridged teeth is arranged in wing Interior tapering, nose and outer shoulder.

5. a kind of ridged toothing PDC drill bit according to claim 1, it is characterised in that ridged teeth and conventional cutting tooth It is alternately arranged in the interior tapering of wing, nose and outer shoulder, and the tooth top of ridged teeth is contour with the tooth top of conventional cutting tooth.

6. a kind of ridged toothing PDC drill bit according to claim 1, it is characterised in that ridged teeth and conventional cutting tooth It is alternately arranged in the interior tapering of wing, nose and outer shoulder, and the tooth top of ridged teeth is higher than the tooth top of conventional cutting tooth.