CN212689929U

CN212689929U - Novel oil drilling PDC drill bit

Info

Publication number: CN212689929U
Application number: CN202021518488.4U
Authority: CN
Inventors: 张生奇
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-03-12
Anticipated expiration: 2030-07-28

Abstract

The utility model discloses a novel PDC drill bit for petroleum drilling, which relates to the technical field of petroleum equipment and comprises a drill bit body, wherein the top of the drill bit body is fixedly provided with circumferentially distributed blades, the top of the drill bit body is positioned between adjacent blades to form a chip groove, the top of the drill bit body is positioned at the chip groove and is provided with a water tank, the top of the drill bit body is positioned at the water tank and is provided with water holes at the center of the top of the drill bit body, the blades are fixedly provided with first cutting teeth, the adjacent blades are fixedly provided with fixed blocks, the fixed blocks are fixedly provided with second cutting teeth, the drill bit body is internally provided with a liquid spraying channel, and the liquid spraying channel is communicated with the water holes. The blade is prevented from being damaged when rotating along with the drill bit body.

Description

Novel oil drilling PDC drill bit

Technical Field

The utility model relates to a petroleum equipment technical field, in particular to novel oil drilling PDC drill bit.

Background

The oil drill bit is an important tool for oil drilling, is used for drilling oil during oil exploitation, and the working performance of the oil drill bit directly influences the drilling quality, the drilling efficiency and the drilling cost.

The PDC drill bit that uses at present is integrated into one piece's drill bit, and at the well drilling in-process, the cooperation of wing and cutting tooth is bored a well to the well drilling department, and the wing receives the striking with the earth's surface and damages easily when boring, and when the drill bit was bored to earth's surface depths, the geological block that is bored garrulous was difficult for timely discharge sometimes and is blocked in the drilling passageway, leads to the stopping of drilling process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel oil drilling PDC drill bit to the blade has damaged the difficult timely exhaust problem of the garrulous geological block of being bored simultaneously when solving the probing that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel oil drilling PDC drill bit, includes the drill bit body, the top fixed mounting of drill bit body has the wing that circumference distributes, the top of drill bit body is located adjacently form the chip groove between the wing, the top of drill bit body is located chip groove department has seted up the basin, the top of drill bit body is located basin department with the water hole has all been seted up to the center department at drill bit body top, fixed mounting has first cutting tooth on the wing, and is adjacent fixed mounting has the fixed block between the wing, fixed mounting has the second cutting tooth on the fixed block, the hydrojet passageway has been seted up in the drill bit body, the hydrojet passageway with the water hole intercommunication.

Preferably, the number of the blades is six.

Preferably, the fixed block is arc form, six the fixed block is in on same circumference, the material of fixed block is the diamond material, first cutting tooth with the material of second cutting tooth is the carbide tooth.

Preferably, the drill body is fixedly provided with the blade, the cross section of one end of the blade is hexagonal, and the drill body is provided with the chip guide strip fixedly arranged below the blade.

Preferably, the rotation direction of the chip guide strip is the same as that of the blade, and the cutting directions of the first cutting tooth and the second cutting tooth are the same.

Preferably, the surface of the drill bit body is plated with an oxidation prevention layer.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a set up the second cutting tooth and can further smash the geological block after first cutting tooth bores the bits of broken glass, reduce the volume that needs the exhaust geological block, can lead the rear of drill bit with the geological block after the regrinding fast through leading the bits strip, avoid the geological block to block on the direction of advance of probing passageway, lead to the stopping of probing work.

2. This practicality can improve the steadiness between each wing through setting up the fixed strip, avoids the wing to damage when rotatory along with the drill bit body.

Drawings

Fig. 1 is a top view of the structure of the present invention.

Fig. 2 is a cross-sectional view taken at a-a in fig. 1.

Fig. 3 is a schematic structural view of the scrap guide strip of the present invention.

In the figure: 1. a drill bit body; 2. a blade; 3. a chip groove; 4. a water tank; 5. water holes; 6. a first cutting tooth; 7. a fixed block; 8. a second cutting tooth; 9. a liquid ejection channel; 10. and a scrap guide strip.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a novel PDC drill bit for petroleum drilling as shown in figures 1-3, which comprises a drill bit body 1, wherein the top of the drill bit body 1 is fixedly provided with blades 2 distributed circumferentially, the top of the drill bit body 1 is positioned between adjacent blades 2 to form a chip groove 3, the top of the drill bit body 1 is positioned at the chip groove 3 and is provided with a water tank 4, the top of the drill bit body 1 is positioned at the water tank 4 and at the center of the top of the drill bit body 1 are both provided with a water hole 5, the blades 2 are fixedly provided with first cutting teeth 6, a fixed block 7 is fixedly arranged between adjacent blades 2, the fixed block 7 is fixedly provided with second cutting teeth 8, the drill bit body 1 is internally provided with a liquid spraying channel 9, the liquid spraying channel 9 is communicated with the water hole 5, the surface of the drill bit body 1 is coated with an anti-oxidation layer, in the utility model, the drill bit body 1 rotates under the driving of external power, the blades 2, the blades 2 and the first cutting teeth 6 drill out and crush the geological block, the crushed geological block is discharged into the chip groove 3 along with the inertia of the previous movement, the water tank 4 is used for storing liquid sprayed out of the water holes 5, the water holes 5 are used for spraying the liquid, the fixing blocks 7 are used for reinforcing and fixing the blades 2, and the oxidation process of the surface of the drill bit body 1 can be slowed down by the oxidation resistant layer.

As shown in fig. 1, the quantity of wing 2 is six, and fixed block 7 is the arc form, and six fixed blocks 7 are in on same circumference, and the material of fixed block 7 is the diamond material, and the material of first cutting tooth 6 and second cutting tooth 8 is the carbide tooth in the utility model discloses in, fixed block 7 provides wing 2 at the ascending fixed power of hoop, and fixed block 7 in on the same circumference can make the power that receives more even on six wing 2, improves wing 2's whole steadiness.

Referring to fig. 1 and 3, the cross-section of one end of the drill bit body 1 fixedly mounted with the blade 2 is hexagonal, a chip guide bar 10 is fixedly mounted below the blade 2 on the drill bit body 1, the turning direction of the chip guide bar 10 is the same as the turning direction of the blade 2, the cutting directions of the first cutting teeth 6 and the second cutting teeth 8 are the same, in the utility model, when the chip guide bar 10 rotates along with the drill bit body 1, the geological block discharged to the rear side of the drill bit body 1 is continuously led out to the outside of the drilling channel along the original movement direction, the turning direction of the chip guide bar 10 is the same as the turning direction of the blade 2, so that the movement of the chip guide bar 10 is convenient for leading out the crushed geological block, and the cutting directions of the first cutting teeth 6 and the second cutting teeth 8 are the same to avoid the damage of the second cutting teeth 8.

This practical theory of operation: when the drill bit is used, the drill bit body 1 is driven by external power to rotate, then the drill bit body 1 drives the blades 2, the fixed block 7, the first cutting teeth 6 and the second cutting teeth 8 to rotate along with the rotation, when the drill bit body 1 feeds to the deep part of the ground surface, the blades 2 dig out the geological, the first cutting teeth 6 crush geological blocks, the geological blocks are discharged into the chip discharge grooves 3 from left to right in the rotating direction of the blades 2 after being crushed, the second cutting teeth 8 can further crush the geological blocks at the moment, the geological blocks after being further crushed are discharged to the rotating direction of the chip guide strip 10, and are accelerated to be discharged to the outer side of a drilling channel under the rotating direction of the chip guide strip 10, so that blocking in the drilling channel is avoided.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a novel oil drilling PDC drill bit, includes drill bit body (1), its characterized in that: the top fixed mounting of drill bit body (1) has wing (2) that circumference distributes, the top of drill bit body (1) is located adjacently form chip groove (3) between wing (2), the top of drill bit body (1) is located chip groove (3) department has seted up basin (4), the top of drill bit body (1) is located basin (4) department with water hole (5) have all been seted up in the center department at drill bit body (1) top, fixed mounting has first cutting tooth (6) on wing (2), and is adjacent fixed mounting has fixed block (7) between wing (2), fixed mounting has second cutting tooth (8) on fixed block (7), hydrojet channel (9) have been seted up in drill bit body (1), hydrojet channel (9) with water hole (5) intercommunication.

2. The novel PDC drill bit for petroleum drilling of claim 1, wherein: the number of the blades (2) is six.

3. The novel PDC drill bit for petroleum drilling of claim 2, wherein: fixed block (7) are the arc form, six fixed block (7) are in on same circumference, the material of fixed block (7) is the diamond material, first cutting tooth (6) with the material of second cutting tooth (8) is the carbide tooth.

4. The novel PDC drill bit for petroleum drilling of claim 1, wherein: the drill bit is characterized in that the drill bit body (1) is fixedly provided with a hexagonal section at one end of the blade (2), and the drill bit body (1) is fixedly provided with a chip guide strip (10) below the blade (2).

5. The novel PDC drill bit for petroleum drilling of claim 4, wherein: the rotating direction of the chip guide strip (10) is the same as that of the blade (2), and the cutting directions of the first cutting tooth (6) and the second cutting tooth (8) are the same.

6. The novel PDC drill bit for petroleum drilling of claim 1, wherein: the surface of the drill bit body (1) is plated with an anti-oxidation layer.