CN217872652U

CN217872652U - PDC drill bit

Info

Publication number: CN217872652U
Application number: CN202220756655.1U
Authority: CN
Inventors: 宋跃; 于晓东; 张健; 徐虎
Original assignee: Sichuan Chuanshi Diamond Bit Co ltd
Current assignee: Sichuan Chuanshi Diamond Bit Co ltd
Priority date: 2022-04-01
Filing date: 2022-04-01
Publication date: 2022-11-22
Anticipated expiration: 2032-04-01

Abstract

The utility model provides a PDC drill bit. The PDC drill bit includes: the drill body, a plurality of drill angles and a plurality of PDC teeth; the connecting groove is formed in the bottom of the drill body; the drill body is provided with a plurality of connecting holes, the connecting holes are formed in the drill body, and fixing screws are arranged in the connecting holes; a plurality of holding tank has all been seted up in the front of brill angle, the bottom of holding tank inner wall sets up threaded hole. The utility model provides a pair of PDC drill bit is through seting up a plurality of connecting holes in the inside of boring the body to pass the connecting hole through set screw, bore the body to bore angle and bottom and carry out fixed connection, the whole of drill bit is by integral, and the split becomes for the combination formula, thereby makes the drill bit after using wearing and tearing, and personnel can directly dismantle wearing and tearing position part, and carry out the part change that corresponds, need not to change the drill bit is whole, the effectual use cost who reduces the drill bit.

Description

PDC drill bit

Technical Field

The utility model relates to a well drilling drill bit field especially relates to a PDC drill bit.

Background

During drilling, the drill bit is the primary tool for breaking rock and the borehole is formed by the drill bit breaking rock. The formation quality of a well bore is good, the time used is related to the mutual matching degree between the drill bit and the stratum besides the characteristics of the rock of the drilled stratum and the performance of the drill bit, and the reasonable type selection of the drill bit plays an important role in improving the drilling speed and reducing the comprehensive drilling cost.

Because the PDC drill bit is mostly used for drilling and drilling in medium-soft stratum and hard interlayer, a good chip removal function is needed, and meanwhile, large chips are difficult to remove, so that a good chip breaking function is also needed.

Because the abrasion loss of the drill bit is large in the drilling work, most of the existing drill bits are integrally installed, when the drill bit is abraded greatly, only the whole drill bit can be replaced, and the abraded part of the drill bit is only the edge drilling angle and the part of the bottom of the drill bit, which is contacted with a drilling tool, so that the use cost of the drilling tool is increased due to the integral replacement.

Therefore, there is a need to provide a PDC drill bit to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a PDC drill bit has solved the higher problem of drill bit replacement cost.

In order to solve the technical problem, the utility model provides a pair of PDC drill bit includes: the drill body, a plurality of drill angles and a plurality of PDC teeth;

the connecting groove is formed in the bottom of the drill body;

the connecting holes are formed in the drill body, and fixing screws are arranged in the connecting holes;

the drilling tool is characterized in that a plurality of holding grooves are formed in the front face of the drilling angle, threaded holes are formed in the bottom of the inner wall of each holding groove, a plurality of connecting holes are communicated with connecting grooves, threaded grooves are formed in the inner walls of the connecting holes, the connecting holes are annularly formed, and the drilling angle is in a plurality of positions and the number of the drilling angles are corresponding to the positions of the connecting holes.

Preferably, a plurality of chip guide grooves are formed in the outer portion of the drill body, and the chip guide grooves are formed in an annular inclined mode.

Preferably, a second connecting rod is arranged inside the connecting groove, one end of the second connecting rod is fixedly connected with a bottom drill body, and the diameter of the bottom drill body is smaller than that of the drill body.

Preferably, a plurality of the PDC teeth are fixedly connected to the outer part of the bottom drill body, and the PDC teeth can be conical, spherical or cylindrical.

Preferably, a first connecting rod is fixedly connected to the top of the drill body, and the first connecting rod is used for connecting a driving device.

Preferably, two ends of the chip guide groove extend out of the outer surfaces of the top and the bottom of the drill body respectively.

Compared with the prior art, the utility model provides a pair of PDC drill bit has following beneficial effect:

the utility model provides a PDC drill bit is through seting up a plurality of connecting holes in the inside of boring the body to pass the connecting hole through set screw, bore the body to bore angle and bottom and carry out fixed connection, the whole of drill bit is by integral, and the split becomes for the combination formula, thereby makes the drill bit after using wearing and tearing, and personnel can directly dismantle wearing and tearing position part, and carry out the part change that corresponds, need not to change the drill bit is whole, the effectual use cost who reduces the drill bit.

Drawings

FIG. 1 is a schematic structural view of a preferred embodiment of a PDC drill bit according to the present invention;

fig. 2 is a schematic structural view of a second connecting rod provided by the present invention;

fig. 3 is a schematic structural diagram of the connecting groove provided by the present invention.

Reference numbers in the figures: 1. the drill bit comprises a chip guide groove, 2, a fixing screw, 3, a bottom drill body, 4, PDC teeth, 5, a drill angle, 6, a threaded hole, 7, an accommodating groove, 8, a drill body, 9, a first connecting rod, 10, a second connecting rod, 11, a connecting groove, 12 and a connecting hole.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Please refer to fig. 1, fig. 2 and fig. 3 in combination, wherein fig. 1 is a schematic structural diagram of a PDC drill bit according to a preferred embodiment of the present invention; fig. 2 is a schematic structural view of a second connecting rod provided by the present invention; fig. 3 is a schematic structural diagram of the connecting groove provided by the present invention. A PDC drill bit comprising: a drill body 8, a plurality of drill angles 5 and a plurality of PDC teeth 4;

the connecting groove 11 is formed in the bottom of the drill body 8;

the drill body 8 is provided with a plurality of connecting holes 12, the connecting holes 12 are arranged in the drill body 8, and fixing screws 2 are arranged in the connecting holes 12;

a plurality of holding tank 7 has all been seted up in the front of brill angle 5, threaded hole 6 is seted up to the bottom of holding tank 7 inner wall, and is a plurality of connecting hole 12 all is linked together with spread groove 11, the inner wall of connecting hole 12 is provided with the thread groove, and is a plurality of connecting hole 12 is the annular and sets up, and is a plurality of the position and the quantity of brill angle 5 all correspond with the position of connecting hole 12, carry out fixed mounting through set screw 2.

The drill body 8 is provided with a plurality of chip guide grooves 1 on the outside, and the chip guide grooves 1 are obliquely arranged in an annular shape.

The inside of spread groove 11 is provided with second connecting rod 10, the one end fixedly connected with bottom of second connecting rod 10 bores the body 3, the diameter of bottom brill body 3 is less than bores the body 8.

And the PDC teeth 4 are fixedly connected to the outer part of the bottom drill body 3, and the PDC teeth 4 can be in a conical shape, a ball head shape or a cylindrical shape.

The top of the drill body 8 is fixedly connected with a first connecting rod 9, and the first connecting rod 9 is used for connecting a driving device.

The two ends of the chip guide groove 1 extend out of the outer surfaces of the top and the bottom of the drill body 8 respectively, and the chip guide groove 1 is used for conducting waste chips.

The utility model provides a pair of PDC drill bit's theory of operation as follows:

when the drill bit is used, the bottom drill body 3 is pushed, the second connecting rod 10 is movably inserted into the connecting groove 11, then the threaded hole 6 is aligned with the connecting hole 12, the drill corners 5 are attached to the outer portion of the drill body 8, then the fixing screws 2 are inserted, and the drill corners 5 are fixedly connected with the second connecting rod 10 through the fixing screws 2 in a threaded mode;

when the drill bit is worn by using the drill corner 5, a person can directly detach the fixing screw 2 corresponding to the worn drill corner 5 to detach and replace the drill corner 5, and meanwhile, the bottom drill body 3 can be detached, detached and replaced through the fixing screw 2.

through seting up a plurality of connecting holes 12 in the inside of boring the body 8 to pass connecting hole 12 through set screw 2, carry out fixed connection to brill angle 5 and bottom brill body 3, the whole of drill bit is by integral, and the split becomes the combination formula, thereby makes the drill bit after using wearing and tearing, and personnel can directly dismantle wearing and tearing position part, and carry out the part change that corresponds, need not to change the drill bit is whole, the effectual use cost who reduces the drill bit.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. A PDC bit, comprising: a drill body (8), a plurality of drill angles (5) and a plurality of PDC teeth (4);

the connecting groove (11), the connecting groove (11) is arranged at the bottom of the drill body (8);

the drill bit comprises a plurality of connecting holes (12), wherein the connecting holes (12) are formed in a drill body (8), and fixing screws (2) are arranged in the connecting holes (12);

a plurality of holding tank (7) have all been seted up in the front of brill angle (5), threaded hole (6) are seted up to the bottom of holding tank (7) inner wall.

2. A PDC drill bit according to claim 1, wherein the drill body (8) has a plurality of chip-guiding grooves (1) formed on the exterior thereof, and the plurality of chip-guiding grooves (1) are formed in an annular shape and obliquely.

3. A PDC drill bit according to claim 1, characterized in that the inside of the connecting groove (11) is provided with a second connecting rod (10), one end of the second connecting rod (10) being fixedly connected with the bottom drill body (3).

4. A PDC bit according to claim 1 wherein a number of the PDC teeth (4) are fixedly connected to the outside of the bottom body (3), the PDC teeth (4) being of conical, spherical or cylindrical shape.

5. A PDC bit according to claim 1, characterized in that a first connecting rod (9) is fixedly connected to the top of the bit body (8).

6. A PDC bit according to claim 2 wherein the chip flutes (1) extend at both ends beyond the top and bottom outer surfaces of the bit body (8), respectively.