CN214576778U - PDC drill bit cutting tooth with good wear resistance - Google Patents

Abstract

The utility model discloses a PDC drill bit cutting tooth that wearability is good relates to drilling engineering technical field, creeps into inefficiency, short-lived for solving current PDC drill bit, problem that work efficiency is low. The utility model provides a PDC drill bit cutting tooth that wearability is good, includes the drill bit base member, the outside of drill bit base member is provided with first wing, second wing and first cutting tooth base member respectively, and first wing, second wing and first cutting tooth base member all with drill bit base member fixed connection, first wing and second wing are provided with threely respectively, and just first wing is interval distribution with the second wing, one side of first wing is provided with second cutting tooth base member and fourth cutting tooth base member respectively, and second cutting tooth base member and fourth cutting tooth base member and first wing fixed connection, one side of second wing is provided with third cutting tooth base member and fifth cutting tooth base member respectively, the outside of first cutting tooth base member is provided with first cutting tooth.

Description

PDC drill bit cutting tooth with good wear resistance

Technical Field

The utility model relates to a drilling engineering technical field specifically is a PDC drill bit cutting tooth that wearability is good.

Background

The PDC drill bit is a well drilling tool commonly used in geological drilling industry, is a well drilling tool commonly used in petroleum drilling industry, is formed by embedding or sintering diamond-made small cutting blocks on a drill bit body, is used in soft to medium hard strata and becomes the PDC drill bit, and PDC cutting teeth are basic cutting units of the PDC drill bit, and the quality of the performance of the PDC drill bit has a decisive influence on the drilling effect of the PDC drill bit.

However, the conventional PDC drill bit is only suitable for soft to medium hard formations and is low in drilling efficiency of the hard formations, and meanwhile, the conventional PDC drill bit can increase the loss speed and reduce the service life when being used for drilling the hard formations, so that the conventional requirements are not met, and the PDC drill bit cutting tooth with good wear resistance is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a PDC drill bit cutting tooth that wearability is good to solve the PDC drill bit that proposes among the above-mentioned background art and creep into the problem of inefficiency, short-lived.

In order to achieve the above object, the utility model provides a following technical scheme: the PDC drill bit cutting tooth with good wear resistance comprises a drill bit base body, wherein a first blade, a second blade and a first cutting tooth base body are respectively arranged outside the drill bit base body, the first blade, the second blade and the first cutting tooth base body are fixedly connected with the drill bit base body, the number of the first blade and the number of the second blade are respectively three, the first blade and the second blade are distributed at intervals, one side of the first blade is respectively provided with a second cutting tooth substrate and a fourth cutting tooth substrate, the second cutting tooth base body and the fourth cutting tooth base body are fixedly connected with the first blade, one side of the second blade is respectively provided with a third cutting tooth base body and a fifth cutting tooth base body, and the third cutting tooth base body and the fifth cutting tooth base body are fixedly connected with the second blade, first cutting teeth are arranged outside the first cutting tooth base body, and the first cutting teeth are fixedly connected with the first cutting tooth base body.

Preferably, the second cutting tooth and the third cutting tooth are respectively arranged outside the second cutting tooth base body, and the second cutting tooth and the third cutting tooth are mutually crossed and vertically distributed.

Preferably, a fourth cutting tooth is arranged outside the third cutting tooth base body, and the fourth cutting tooth is fixedly connected with the third cutting tooth base body.

Preferably, a fifth cutting tooth is arranged outside the fourth cutting tooth base body, and the fifth cutting tooth is fixedly connected with the fourth cutting tooth base body.

Preferably, a sixth cutting tooth and a seventh cutting tooth are respectively arranged outside the fifth cutting tooth base body, and the sixth cutting tooth and the seventh cutting tooth are mutually crossed and vertically distributed.

Preferably, one side of the drill bit base body is provided with two rows of nozzles which are uniformly distributed in an annular shape, and the number of the nozzles is nine.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a be provided with first wing and second wing and first cutting tooth base member in the outside of drill bit base member, the one end of first cutting tooth base member is provided with first cutting tooth, first cutting tooth is the taper shape, for vulnerable part, the cutting tooth has been protected when the conical design promotes the cutting tooth performance, the footage of PDC drill bit has been increased, when the drill bit base member rotates, first cutting tooth broke the hard thing in the stratum, the hard thing spreads to the periphery along the surface of first cutting tooth, contact first wing and the second wing of rotation, second cutting tooth and the third cutting tooth that second cutting tooth base member surface on the first wing set up broke the hard thing, second cutting tooth and third cutting tooth are the cross setting, the blade face of second cutting tooth and third cutting tooth is the inclined plane, the design of inclined plane enlarges pressure to bigger region, so as to reduce the gradient stress on the cutting edge, thereby prolonging the service life of the cutting teeth and the PDC drill bit and accelerating the working efficiency of the PDC drill bit.

2. The utility model discloses a set up the fifth cutting tooth at the front end of fourth cutting tooth base member, hit garrulous hard thing once more, the hard thing is hit garrulous by the second cutting tooth of the big second cutting tooth base member front end of interval and third cutting tooth after being hit garrulous by the fifth cutting tooth of the little fourth cutting tooth base member front end of rear interval, similar and rough machining and thin processing, the secondary is hit garrulous more thoroughly, simultaneously, the vulnerable site in the fifth cutting tooth outside is established to the inclined plane, the protection cutting tooth when promoting the cutting tooth performance, increase the footage of this kind of cutting tooth drill bit in the difficult drilling stratum, prolong its life-span, sixth cutting tooth and seventh cutting tooth play the same effect with second cutting tooth and third cutting tooth, third cutting tooth base member and fourth cutting tooth are the same with first cutting tooth base member and first cutting tooth structure, play the same effect, when this drill bit rotates, the destructive power to hard thing is stronger, meanwhile, a nozzle arranged on one side of the PDC drill bit base body can spray cooling liquid so as to reduce the temperature generated during the operation of the PDC drill bit and further prolong the service life of the PDC drill bit.

Drawings

Fig. 1 is a schematic external structural view of the present invention;

FIG. 2 is a side view of a second blade of the present invention;

fig. 3 is a side view of a first blade of the present invention;

FIG. 4 is a top view of a second cutting tooth substrate according to the present invention;

FIG. 5 is a side view of a third cutting tooth of the present invention;

FIG. 6 is a side view of a first cutting tooth base of the present invention;

fig. 7 is a top view of a fifth tooth base of the present invention.

In the figure: 1. a drill bit substrate; 2. a nozzle; 3. a first blade; 4. a second blade; 5. a first cutting tooth base; 501. a first cutting tooth; 6. a second cutting tooth base; 601. a second cutting tooth; 602. a third cutting tooth; 7. a third cutting tooth base; 701. a fourth cutting tooth; 8. a fourth cutting tooth base; 801. a fifth cutting tooth; 9. a fifth cutting tooth base; 901. a sixth cutting tooth; 902. a seventh cutting tooth.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-7, the present invention provides an embodiment: a PDC drill bit cutting tooth with good wear resistance comprises a drill bit base body 1, wherein a first cutter wing 3, a second cutter wing 4 and a first cutting tooth base body 5 are respectively arranged outside the drill bit base body 1, the first cutter wing 3, the second cutter wing 4 and the first cutting tooth base body 5 are fixedly connected with the drill bit base body 1, the number of the first cutter wing 3 and the number of the second cutter wing 4 are respectively three, the first cutter wing 3 and the second cutter wing 4 are distributed at intervals, one side of the first cutter wing 3 is respectively provided with a second cutting tooth base body 6 and a fourth cutting tooth base body 8, the second cutting tooth base body 6 and the fourth cutting tooth base body 8 are fixedly connected with the first cutter wing 3, one side of the second cutter wing 4 is respectively provided with a third cutting tooth base body 7 and a fifth cutting tooth base body 9, the third cutting tooth base body 7 and the fifth cutting tooth base body 9 are fixedly connected with the second cutter wing 4, a first cutting tooth 501 is arranged outside the first cutting tooth base body 5, and the first cutting tooth 501 is fixedly connected with the first cutting tooth base body 5, the first cutting tooth 501 is conical, and is a vulnerable part, the conical design protects the cutting tooth while improving the performance of the cutting tooth, and the footage of the PDC drill bit is increased.

Further, a second cutting tooth 601 and a third cutting tooth 602 are respectively arranged outside the second cutting tooth base 6, the second cutting tooth 601 and the third cutting tooth 602 are mutually crossed and vertically distributed, the cutting faces of the second cutting tooth 601 and the third cutting tooth 602 are inclined faces, and the pressure is expanded to a larger area by the design of the inclined faces, so that the stress gradient on the cutting edge is reduced, and the service life of the cutting tooth and the service life of the PDC drill bit are prolonged.

Further, the outer portion of the third cutting tooth base body 7 is provided with a fourth cutting tooth 701, the fourth cutting tooth 701 is fixedly connected with the third cutting tooth base body 7, the fourth cutting tooth 701 is conical, and in order to damage a position, the conical design protects the cutting tooth while improving the performance of the cutting tooth, and the footage of the PDC drill bit is increased.

Furthermore, a fifth cutting tooth 801 is arranged outside the fourth cutting tooth base body 8, the fifth cutting tooth 801 is fixedly connected with the fourth cutting tooth base body 8, a vulnerable part on the outer side of the fifth cutting tooth 801 is an inclined surface, the cutting tooth is protected while the cutting tooth performance is improved, the footage of the cutting tooth drill in a difficult-to-drill stratum is increased, and the service life of the cutting tooth drill is prolonged.

Furthermore, a sixth cutting tooth 901 and a seventh cutting tooth 902 are respectively arranged outside the fifth cutting tooth base body 9, the sixth cutting tooth 901 and the seventh cutting tooth 902 are mutually crossed and vertically distributed, the cutting faces of the sixth cutting tooth 901 and the seventh cutting tooth 902 are inclined faces, and the pressure is expanded to a larger area by the inclined face design, so that the stress gradient on the cutting edge is reduced, and the service life of the cutting tooth and the service life of the PDC drill bit are prolonged.

Further, one side of drill bit base member 1 is provided with two rows of nozzles 2 that are annular evenly distributed, and nozzle 2 has nine, and nozzle 2 can jet out cooling liquid to reduce the temperature that the PDC drill bit produced when moving, the further life-span of extension PDC drill bit.

The working principle is as follows: when the PDC drill bit is used, a drill bit base body 1 is fixedly connected with a driving shaft of a drilling machine, one side of the drill bit base body 1 is provided with a first cutter wing 3, a second cutter wing 4 and a first cutter tooth base body 5, one end of the first cutter tooth base body 5 is provided with the first cutter tooth 501, the first cutter tooth 501 is conical and is a vulnerable part, the conical design protects the cutter teeth while improving the performance of the cutter teeth, the feed ruler of the PDC drill bit is increased, the first cutter wing 3 and the second cutter wing 4 are uniformly distributed on the surface of the drill bit base body 1 along an annular shape by taking the first cutter tooth base body 5 as a circle center, the number of the first cutter wing 3 and the second cutter wing 4 is three respectively, when the drill bit base body 1 rotates, the first cutter tooth 501 arranged on the surface of the first cutter tooth base body 5 breaks hard objects in a stratum, the hard objects are diffused to the periphery along the surface of the first cutter tooth 501 and are contacted with the rotating first cutter wing 3 and the second cutter tooth 602 arranged on the surface of the second cutter tooth base body 6 on the first wing 3, the second cutting tooth 601 and the third cutting tooth 602 are arranged in a cross shape, the cutting edge surfaces of the second cutting tooth 601 and the third cutting tooth 602 are inclined surfaces, the pressure is expanded to a larger area by the design of the inclined surfaces, so that the stress gradient on the cutting edge is reduced, the service life of the cutting tooth and the service life of the PDC drill bit are prolonged, the working efficiency of the PDC drill bit is improved, then the fifth cutting tooth 801 arranged at the front end of the fourth cutting tooth base body 8 behind the second cutting tooth base body 6 is crushed again, the second cutting tooth base body 6 and the fourth cutting tooth base body 8 are sequentially distributed on the first blade 3, hard objects are crushed again by the second cutting tooth 601 at the front end of the second cutting tooth base body 6 with large spacing and the third cutting tooth 602 with small spacing, and then are crushed again by the fifth cutting tooth 801 at the front end of the fourth cutting tooth base body 8 with small spacing behind, similar to rough machining and fine machining, the secondary crushing is more thorough, and simultaneously, the vulnerable part outside the fifth cutting tooth 801 is set as a bevel, which protects the cutting tooth while improving the cutting tooth performance, increases the footage of the cutting tooth drill in difficult-to-drill stratum, prolongs the service life of the cutting tooth drill, the sixth cutting tooth 901 and the seventh cutting tooth 902 at one end of the fifth cutting tooth matrix 9 on the second blade 4 and the second cutting tooth 601 and the third cutting tooth 602 at one end of the second cutting tooth matrix 6 on the first blade 3 play the same role, the third cutting tooth matrix 7 and the fourth cutting tooth 701 on the second blade 4 and the first cutting tooth matrix 5 and the first cutting tooth 501 play the same role, the drill has stronger destructive power to hard objects when rotating, and simultaneously, the nozzle 2 arranged at one side of the PDC matrix 1 can spray cooling liquid to reduce the temperature generated when the drill operates, and further prolongs the service life of the PDC drill.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The PDC drill bit cutting tooth with good wear resistance comprises a drill bit base body (1), and is characterized in that: the drill bit is characterized in that a first blade (3), a second blade (4) and a first cutting tooth substrate (5) are respectively arranged outside the drill bit substrate (1), the first blade (3), the second blade (4) and the first cutting tooth substrate (5) are fixedly connected with the drill bit substrate (1), the first blade (3) and the second blade (4) are respectively arranged in three numbers, the first blade (3) and the second blade (4) are distributed at intervals, a second cutting tooth substrate (6) and a fourth cutting tooth substrate (8) are respectively arranged on one side of the first blade (3), the second cutting tooth substrate (6) and the fourth cutting tooth substrate (8) are fixedly connected with the first blade (3), a third cutting tooth substrate (7) and a fifth cutting tooth substrate (9) are respectively arranged on one side of the second blade (4), and the third cutting tooth substrate (7) and the fifth cutting tooth substrate (9) are fixedly connected with the second blade (4), the first cutting tooth base body (5) is provided with first cutting teeth (501) on the outer portion, and the first cutting teeth (501) are fixedly connected with the first cutting tooth base body (5).

2. The PDC bit cutting element of claim 1, wherein: and a second cutting tooth (601) and a third cutting tooth (602) are respectively arranged outside the second cutting tooth base body (6), and the second cutting tooth (601) and the third cutting tooth (602) are mutually crossed and vertically distributed.

3. The PDC bit cutting element of claim 1, wherein: and a fourth cutting tooth (701) is arranged outside the third cutting tooth base body (7), and the fourth cutting tooth (701) is fixedly connected with the third cutting tooth base body (7).

4. The PDC bit cutting element of claim 1, wherein: and a fifth cutting tooth (801) is arranged outside the fourth cutting tooth base body (8), and the fifth cutting tooth (801) is fixedly connected with the fourth cutting tooth base body (8).

5. The PDC bit cutting element of claim 1, wherein: and a sixth cutting tooth (901) and a seventh cutting tooth (902) are respectively arranged outside the fifth cutting tooth base body (9), and the sixth cutting tooth (901) and the seventh cutting tooth (902) are mutually crossed and vertically distributed.

6. The PDC bit cutting element of claim 1, wherein: one side of the drill bit base body (1) is provided with two rows of nozzles (2) which are uniformly distributed in an annular shape, and the number of the nozzles (2) is nine.

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