CN216894252U

CN216894252U - Anti-impact PDC drill bit for oil exploitation

Info

Publication number: CN216894252U
Application number: CN202123401600.3U
Authority: CN
Inventors: 张志永; 倪沛增; 杨挺
Original assignee: Shaanxi Xingtong Petroleum Engineering Technology Co ltd
Current assignee: Shaanxi Xingtong Petroleum Engineering Technology Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-07-05
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses an impact-resistant PDC drill bit for oil exploitation, which comprises a shell and a fixed sleeve, wherein the fixed sleeve is arranged at the top end inside the shell, a rod body is arranged inside the fixed sleeve, a connecting block is arranged at the bottom of the rod body through a shaft sleeve, a drill bit is arranged at the bottom of the connecting block, a plurality of groups of tooth blocks are arranged outside the drill bit at equal intervals, and a sleeve ring is sleeved at the top end outside the shell. This PDC drill bit shocks resistance for oil development has cup jointed the lantern ring through the top in the casing outside, the lantern ring that has inserted the external pipe with both sides is installed on the casing with the screw, continue to press the external pipe again, make it pass the trachea of gas port and the inside setting of passageway and link to each other, wait to when the drill bit is too high because of the temperature that work produced, in the fixed cover of body of rod income casing, the shower nozzle that sets up with trachea bottom inboard is cooled down drill bit and tooth piece and is handled, and clear away the dirt that the higher authority is infected with, the problem that the drill bit radiating effect is not good enough has been solved.

Description

Impact-resistant PDC drill bit for oil exploitation

Technical Field

The utility model relates to the technical field of PDC drill bits, in particular to an impact-resistant PDC drill bit for petroleum exploitation.

Background

The PDC drill bit is a drilling tool for welding diamond on the tip of the drill bit in a polymerization manner, is commonly used for exploring geology or exploiting oil fields and the like, and a tooth block arranged at the top end of the PDC drill bit is very complex so as to increase the ground gripping power, the common PDC drill bit can generate a large amount of heat after working for a long time, some designers set a fan outside the PDC drill bit to reduce the temperature of the drill bit, but the PDC drill bit is not well developed during underground operation, and the heat dissipation strength is limited.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an impact-resistant PDC drill bit for oil exploitation, and aims to solve the problem that the heat dissipation effect of the drill bit is poor in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an oil development is with PDC drill bit that shocks resistance, includes casing and fixed cover, the inside top of casing is provided with fixed cover, the inside of fixed cover is provided with the body of rod, there is the connecting block bottom of the body of rod through the axle sleeve mounting, the bottom of connecting block is provided with the drill bit, the outside of drill bit is provided with multiunit tooth piece between waiting, the outside top of casing has cup jointed the lantern ring.

Preferably, the both sides of the lantern ring are respectively spliced and fixed with an external pipe, the both sides inside the casing are respectively and longitudinally provided with a channel, the outside at the top of the channel is provided with an air port, the inside of the channel is provided with an air pipe, one side at the top of the air pipe is respectively connected with the external pipe through the air port, and the inner side at the bottom of the air pipe is provided with a spray head.

Preferably, the lantern ring is sleeved at the top end outside the shell, and the channel and the air pipe are respectively symmetrically arranged on two sides inside the shell.

Preferably, the both sides of fixed cover bottom are fixedly connected with mounting bracket respectively, the bottom fixed mounting of mounting bracket has servo motor, be connected with little fluted disc between servo motor and the fixed cover, the inside of fixed cover bottom is provided with the block cover, the outside fixedly connected with big fluted disc of block cover.

Preferably, the outside of the rod body is provided with a thread, and the lines of the thread are matched with the clamping sleeve.

Preferably, the inside of connecting block bottom is provided with hides the cavity, the fixed welding in the outside top of drill bit has movable loop bar, inlay in hiding the cavity on the top of movable loop bar, the connecting block bottom is provided with the multiunit spring groove respectively with the drill bit top, be provided with logical groove between spring groove and the connecting block, it has the movable rod to peg graft in the inside that leads to the groove, the bottom and the drill bit of movable rod link to each other, fixedly connected with supporting spring respectively between the inside in spring groove.

Compared with the prior art, the utility model has the beneficial effects that: the impact-resistant PDC drill bit for oil exploitation not only realizes the effects of lifting and reducing heat, realizes the protection of the drill bit, but also realizes the alleviation of the impact strength of the drill bit;

(1) the top end outside the shell is sleeved with a lantern ring, the lantern rings with external pipes inserted at two sides are installed on the shell through screws, then the external pipes are continuously pressed to penetrate through the air ports to be connected with an air pipe arranged inside the channel, when the temperature of the drill bit generated by working is overhigh, the rod body is put into a fixed sleeve in the shell, the drill bit and the tooth block are cooled by a spray head arranged at the inner side of the bottom end of the air pipe, and dirt stained on the drill bit and the tooth block is removed;

(2) the fixed sleeve is arranged at the top end inside the shell, the servo motor fixed at the bottom end of the mounting frame is started, the two small fluted discs with the same rotating direction are meshed with and linked with the big fluted disc to rotate in situ, and the clamping sleeve arranged inside the drill bit is in threaded transmission with the outer side of the rod body, so that the aim of retracting or ejecting the drill bit is fulfilled, and the omnibearing protection on the drill bit is realized;

(3) through being provided with the drill bit in the bottom of connecting block, after drill bit and tooth piece contact the soil on ground, when rotatory, excavating soil layer and rock layer, the drill bit receives impact and extrusion, and supporting spring's extrusion is down moved towards the top in the spring pocket, and the movable rod that sets up in the logical groove of jack-up to receive movable loop bar simultaneously and return in hiding the cavity, in order to alleviate the impact force degree that the drill bit received.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is an enlarged partial cross-sectional view taken at A in FIG. 1 according to the present invention;

fig. 3 is a schematic view of the front cross-sectional structure of the fixing cover of the present invention;

FIG. 4 is a schematic view of the cross-sectional structure of the drill according to the present invention.

In the figure: 1. a housing; 2. a channel; 3. an air tube; 4. a collar; 5. fixing a sleeve; 6. a thread; 7. a rod body; 8. connecting blocks; 9. a drill bit; 10. a tooth block; 11. an external connection pipe; 12. a gas port; 13. a small fluted disc; 14. a mounting frame; 15. a servo motor; 16. a big fluted disc; 17. a clamping sleeve; 18. a through groove; 19. concealing the chamber; 20. a movable loop bar; 21. a support spring; 22. a movable rod; 23. a spring slot.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: referring to fig. 1-4, an impact-resistant PDC drill bit for oil exploitation includes a casing 1 and a fixing sleeve 5, the fixing sleeve 5 is disposed at the top end inside the casing 1, a rod body 7 is disposed inside the fixing sleeve 5, a connecting block 8 is mounted at the bottom of the rod body 7 through a shaft sleeve, a drill bit 9 is disposed at the bottom of the connecting block 8, a plurality of sets of tooth blocks 10 are disposed at equal intervals outside the drill bit 9, and a lantern ring 4 is sleeved at the top end outside the casing 1;

the two sides of the lantern ring 4 are respectively fixedly provided with an external pipe 11 in an inserting way, the two sides inside the shell 1 are respectively and longitudinally provided with a channel 2, the outer side of the top of the channel 2 is provided with an air port 12, an air pipe 3 is arranged inside the channel 2, one side of the top of the air pipe 3 penetrates through the air port 12 and is connected with the external pipe 11, the inner side of the bottom of the air pipe 3 is provided with a spray head, the lantern ring 4 is sleeved at the top end outside the shell 1, and the channel 2 and the air pipe 3 are respectively and symmetrically arranged at the two sides inside the shell 1;

specifically, as shown in fig. 1 and 2, the lantern ring 4 with the external connection pipe 11 inserted on both sides is installed on the casing 1 by a screw, and then the external connection pipe 11 is continuously pressed to pass through the air port 12 to be connected with the air pipe 3 arranged inside the channel 2, when the temperature of the drill bit 9 generated by working is too high, the rod body 7 is put into the fixed sleeve 5 in the casing 1, the drill bit 9 and the tooth block 10 are cooled by the nozzle arranged on the inner side of the bottom end of the air pipe 3, and dirt stained on the drill bit is removed.

Example 2: the two sides of the bottom of the fixed sleeve 5 are respectively fixedly connected with a mounting frame 14, the bottom end of the mounting frame 14 is fixedly provided with a servo motor 15, a small fluted disc 13 is connected between the servo motor 15 and the fixed sleeve 5, the inside of the bottom end of the fixed sleeve 5 is provided with a clamping sleeve 17, the outside of the clamping sleeve 17 is fixedly connected with a large fluted disc 16, the outside of the rod body 7 is provided with threads 6, and the grains of the threads 6 are matched with the clamping sleeve 17;

specifically, as shown in fig. 1 and 3, the servo motor 15 fixed at the bottom end of the mounting frame 14 is started, two small toothed discs 13 with the same rotation direction are meshed with and linked with a large toothed disc 16 to rotate in situ, and a clamping sleeve 17 arranged inside the object is in transmission with the threads 6 on the outer side of the rod body 7, so that the purpose of retracting or ejecting the drill bit 9 is achieved, and the object is protected in all directions.

Example 3: a hidden cavity 19 is formed in the bottom end of the connecting block 8, a movable loop bar 20 is fixedly welded at the top end of the outer portion of the drill bit 9, the top end of the movable loop bar 20 is embedded in the hidden cavity 19, a plurality of groups of spring grooves 23 are formed in the bottom end of the connecting block 8 and the top end of the drill bit 9 respectively, a through groove 18 is formed between each spring groove 23 and the connecting block 8, a movable rod 22 is inserted into the through groove 18, the bottom end of each movable rod 22 is connected with the drill bit 9, and supporting springs 21 are fixedly connected between the insides of the spring grooves 23 respectively;

specifically, as shown in fig. 1 and 4, when the drill bit 9 and the tooth block 10 contact the soil on the ground and the earth and rock layer are rotated and excavated, the drill bit 9 is impacted and squeezed, the supporting spring 21 in the spring groove 23 is pushed down and moved upward, the movable rod 22 disposed in the through groove 18 is jacked up, and the movable sleeve rod 20 is simultaneously retracted in the hidden chamber 19, so as to reduce the impact force applied to the drill bit 9.

The working principle is as follows: when the utility model is used, firstly, a servo motor 15 fixed at the bottom end of a mounting frame 14 is started, two small fluted discs 13 with the same rotating direction are meshed with and linked with a big fluted disc 16 to rotate in situ, a clamping sleeve 17 arranged in the object is in transmission with threads 6 on the outer side of a rod body 7 to achieve the purpose of contracting or ejecting a drill bit 9, so that the object is protected in all directions, then, lantern rings 4 with outer connecting pipes 11 inserted at two sides are arranged on a shell 1 through screws, the outer connecting pipes 11 are continuously pressed to be connected with an air pipe 3 arranged in a channel 2 through an air port 12, when the temperature of the drill bit 9 generated by working is overhigh, the rod body 7 is put into a fixed sleeve 5 in the shell 1, a spray head arranged at the inner side of the bottom end of the air pipe 3 is used for cooling the drill bit 9 and a tooth block 10, dirt adhered to the drill bit 9 and the tooth block 10 is removed, and when the drill bit 9 and the tooth block 10 contact with soil on the ground, the drill bit 9 and the tooth block 10 rotate, When excavating the soil layer and the rock layer, the drill bit 9 is impacted and extruded, the supporting spring 21 in the spring groove 23 is extruded to move upwards, the movable rod 22 arranged in the through groove 18 is jacked up, and meanwhile, the movable sleeve rod 20 is collected in the hidden cavity 19, so that the impact force on the drill bit 9 is reduced.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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

1. The utility model provides an oil development is with PDC drill bit that shocks resistance, includes casing (1) and fixed cover (5), its characterized in that: the top of casing (1) inside is provided with fixed cover (5), the inside of fixed cover (5) is provided with the body of rod (7), the bottom of the body of rod (7) is through the axle sleeve mounting have connecting block (8), the bottom of connecting block (8) is provided with drill bit (9), the outside of drill bit (9) is provided with multiunit tooth piece (10) between waiting, the lantern ring (4) has been cup jointed on the top of casing (1) outside.

2. The impact-resistant PDC drill bit for oil exploitation of claim 1, wherein: the both sides of the lantern ring (4) are respectively spliced and fixed with external pipe (11), the both sides of the interior of the shell (1) are respectively and longitudinally provided with a channel (2), the outer side of the top of the channel (2) is provided with a gas port (12), the interior of the channel (2) is provided with a gas pipe (3), one side of the top of the gas pipe (3) is respectively connected with the external pipe (11) through the gas port (12), and the inner side of the bottom of the gas pipe (3) is provided with a spray head.

3. The impact-resistant PDC drill bit for oil exploitation according to claim 2, wherein: the lantern ring (4) is sleeved at the top end of the outer portion of the shell (1), and the channel (2) and the air pipe (3) are symmetrically arranged on two sides of the inner portion of the shell (1) respectively.

4. The impact-resistant PDC drill bit for oil exploitation according to claim 1, wherein: the both sides of fixed cover (5) bottom are fixedly connected with mounting bracket (14) respectively, the bottom fixed mounting of mounting bracket (14) has servo motor (15), be connected with little fluted disc (13) between servo motor (15) and fixed cover (5), the inside of fixed cover (5) bottom is provided with block cover (17), the outside fixedly connected with big fluted disc (16) of block cover (17).

5. The impact-resistant PDC drill bit for oil exploitation according to claim 4, wherein: the outside of the rod body (7) is provided with a thread (6), and the grains of the thread (6) are matched with the clamping sleeve (17).

6. The impact-resistant PDC drill bit for oil exploitation according to claim 1, wherein: the utility model discloses a drill bit, including connecting block (8), drill bit (9), fixed welding in the outside top of connecting block (8) has hidden cavity (19), the top of activity loop bar (20) inlays in hiding cavity (19), connecting block (8) bottom and drill bit (9) top are provided with multiunit spring groove (23) respectively, be provided with between spring groove (23) and connecting block (8) and lead to groove (18), it has movable rod (22) to peg graft in the inside that leads to groove (18), the bottom of movable rod (22) links to each other with drill bit (9), fixedly connected with supporting spring (21) respectively between the inside of spring groove (23).