CN114856453B - PDC drill bit with quick assembly disassembly formula nozzle - Google Patents
PDC drill bit with quick assembly disassembly formula nozzle Download PDFInfo
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- CN114856453B CN114856453B CN202210788607.5A CN202210788607A CN114856453B CN 114856453 B CN114856453 B CN 114856453B CN 202210788607 A CN202210788607 A CN 202210788607A CN 114856453 B CN114856453 B CN 114856453B
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- nozzle
- limiting block
- sliding sleeve
- groove
- limiting groove
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/61—Drill bits characterised by conduits or nozzles for drilling fluids characterised by the nozzle structure
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention belongs to the technical field of well drilling, and particularly relates to a PDC drill bit with a quick-detachable nozzle, which comprises: the water channel is formed in the drill bit body, and one end of the water channel penetrates through the surface of the drill bit body to form a water outlet; a nozzle mounted to the water outlet; a first limiting groove and a second limiting groove are formed in the inner wall of the water channel, the first limiting groove is arranged along the axial direction of the water channel, the second limiting groove is arranged along the circumferential direction of the water channel, and the first limiting groove is communicated with the second limiting groove; the outer wall of the nozzle is provided with a first limiting block matched with the first limiting groove and a second limiting block matched with the second limiting groove, and the first limiting block is arranged along the axial direction of the nozzle in a movable mode. The quick-disassembly nozzle and the drill bit body do not need to be connected in a threaded manner, so that the nozzle and the drill bit body can be prevented from being adhered, the failure of threads is avoided, and the nozzle is convenient to install and disassemble.
Description
Technical Field
The invention belongs to the technical field of drilling, and particularly relates to a PDC drill bit with a quick-dismounting nozzle.
Background
In the prior art, a nozzle of a PDC drill bit is generally directly installed at a water outlet in a threaded connection mode, and the nozzle needs to be replaced regularly due to inevitable erosion and abrasion, but in the prior art, a threaded hole is directly formed in a drill bit body, the drill bit is in a high-pressure and dirty environment for a long time, the nozzle is easily adhered to the drill bit body, so that the thread is failed, the waste nozzle is not easily detached, and even the whole drill bit is scrapped in severe cases; in addition, in the nozzle installation process, the drill bit needs to be effectively fixed, and the assembly process is complicated.
Disclosure of Invention
In view of the above-described shortcomings of the prior art, it is an object of the present invention to provide a PDC bit with a quick-disconnect nozzle that facilitates nozzle installation and removal.
To achieve the above and other related objects, the present invention provides a PDC bit with a quick-release nozzle, comprising:
the water channel is formed in the drill bit body, and one end of the water channel penetrates through the surface of the drill bit body to form a water outlet;
a nozzle mounted to the water outlet;
a first limiting groove and a second limiting groove are formed in the inner wall of the water channel, the first limiting groove is arranged along the axial direction of the water channel, the second limiting groove is arranged along the circumferential direction of the water channel, and the first limiting groove is communicated with the second limiting groove;
a first limiting block matched with the first limiting groove and a second limiting block matched with the second limiting groove are arranged on the outer wall of the nozzle, and the first limiting block is movably arranged between the first station I and the second station II along the axial direction of the nozzle; under the condition that the second limiting block is inserted into the second limiting groove through the first limiting groove, when the first limiting block is positioned at the first station, the first limiting block is positioned at the outer end of the first limiting groove, and when the first limiting block is positioned at the second station, the first limiting block is positioned in the first limiting groove.
In an optional embodiment of the present invention, a linkage mechanism is disposed between the first stopper and the second stopper, and the linkage mechanism is configured to enable the first stopper to be switched from the first station to the second station and to maintain the first stopper at the second station when the second stopper already located in the second stopper groove rotates along the second stopper groove by a preset angle.
In an optional embodiment of the present invention, the linkage mechanism includes a sliding sleeve and a pressure spring, the sliding sleeve is movably and circumferentially and fixedly connected with the axis of the nozzle, the first limit block is fixed on the sliding sleeve, and the pressure spring is assembled such that an elastic force thereof can drive the sliding sleeve to move toward a direction close to the second limit block; an elastic deflector rod is formed on the outer wall of the nozzle, the second limiting block is formed on the elastic deflector rod, and when the first limiting block is positioned at the first station, the end part of the elastic deflector rod is abutted against the end part of the sliding sleeve, so that the first limiting block is kept at the first station; be equipped with breach portion on the terminal surface of sliding sleeve, the second spacing groove is kept away from the one end of first spacing groove is equipped with the groove, is located the second spacing inslot the second stopper certainly first spacing groove rotates when predetermineeing the angle, the second stopper with the groove is inconsistent, at this moment the elasticity driving lever receives the extrusion of groove and production along the radial deformation of nozzle, so that the tip of elasticity driving lever with the tip of sliding sleeve breaks away from and falls into in the breach portion, at this moment the sliding sleeve will be in under the effect of pressure spring station one first stopper switch extremely station two.
In an optional embodiment of the present invention, the outer wall of the nozzle is provided with a spline, the inner wall of the sliding sleeve is provided with a spline groove, and the spline groove form a sliding fit.
In an optional embodiment of the present invention, a convex pillar is disposed at an end of the nozzle away from the water outlet, and the elastic deflector rod is formed on the convex pillar.
In an optional embodiment of the present invention, an outer diameter of the sliding sleeve is consistent with an outer diameter of the convex column, and the outer diameter of the sliding sleeve and the outer diameter of the convex column are consistent with an inner diameter of the water channel.
In an optional embodiment of the invention, a nut is arranged at the outer end of the nozzle, the nut is in threaded connection with the nozzle, an extension pipe is arranged at one end of the nut, which faces the sliding sleeve, an outer flange is arranged at the end part of the extension pipe, the outer flange is in blocking connection with an inner flange arranged on the sliding sleeve, and when the nut rotates outwards relative to the nozzle, the sliding sleeve can be driven to slide in a direction away from the second limit block, so that the first limit block returns to the first station; the center hole of the outer end of the nut is internally provided with a step part, and the step part is blocked with the outer end of the nozzle.
In an optional embodiment of the invention, the water outlet is provided with a sinking platform, the sliding sleeve is provided with an annular baffle, and when the first limiting block is positioned at the second station, the annular baffle is attached to the bottom surface of the sinking platform.
In an optional embodiment of the present invention, a sealing ring is disposed on a side of the annular baffle plate, which is attached to the sinking platform.
In an alternative embodiment of the invention, the outer end of the nut is provided with a cross-shaped groove.
The invention has the technical effects that: the quick-disassembly nozzle and the drill bit body do not need to be connected in a threaded manner, so that the nozzle and the drill bit body can be prevented from being adhered, and thread failure is avoided; the invention realizes circumferential fixation between the nozzle and the drill bit body by matching the first limiting block and the first limiting groove, realizes axial fixation between the nozzle and the drill bit body by matching the second limiting block and the second limiting groove, has reliable connection structure, and is convenient for the installation and the disassembly of the nozzle by arranging the first limiting block into a movable structure.
Drawings
FIG. 1 is a perspective view of a PDC bit having quick disconnect nozzles provided in accordance with an embodiment of the present invention;
FIG. 2 is a partially cut-away perspective view of a PDC bit having quick disconnect nozzles provided in accordance with an embodiment of the present invention;
FIG. 3 is a front view of a nozzle provided by an embodiment of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a cross-sectional view B-B of FIG. 3;
FIG. 6 is a cross-sectional view C-C of FIG. 4;
FIG. 7 is a cross-sectional view D-D of FIG. 4;
FIG. 8 is a perspective view of a nozzle provided by an embodiment of the present invention;
FIG. 9 is an exploded view of one perspective of a nozzle provided by an embodiment of the present invention;
fig. 10 is an exploded view of another perspective of a nozzle provided by an embodiment of the present invention.
Detailed Description
The following embodiments of the present invention are provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
Referring to fig. 1-10, a PDC drill bit with a quick-release nozzle includes a bit body 10 and a nozzle 20; specifically, a water channel 11 is formed in the drill bit body 10, one end of the water channel 11 penetrates through the surface of the drill bit body 10 to form a water outlet, and necessary blades and teeth are further arranged on the drill bit body 10; the nozzle 20 is mounted at the water outlet; a first limiting groove 111 and a second limiting groove 112 are formed in the inner wall of the water channel 11, the first limiting groove 111 is arranged along the axial direction of the water channel 11, the second limiting groove 112 is arranged along the circumferential direction of the water channel 11, and the first limiting groove 111 is communicated with the second limiting groove 112; a first limiting block 21 matched with the first limiting groove 111 and a second limiting block 22 matched with the second limiting groove 112 are arranged on the outer wall of the nozzle 20, and the first limiting block 21 is movably arranged between a first station I and a second station II along the axial direction of the nozzle 20; under the condition that the second limiting block 22 is inserted into the second limiting groove 112 through the first limiting groove 111, when the first limiting block 21 is located at the first station, the first limiting block 21 is located at the outer end of the first limiting groove 111, and when the first limiting block 21 is located at the second station, the first limiting block 21 is located in the first limiting groove 111.
The quick-disassembly nozzle 20 and the drill bit body 10 do not need to be connected in a threaded manner, so that the nozzle 20 and the drill bit body 10 can be prevented from being adhered, and thread failure is avoided; the nozzle 20 and the drill bit body 10 are circumferentially fixed by matching the first limiting block 21 with the first limiting groove 111, the nozzle 20 and the drill bit body 10 are axially fixed by matching the second limiting block 22 with the second limiting groove 112, the connection structure is reliable, and meanwhile, the first limiting block 21 is arranged to be of a movable structure, so that the nozzle 20 is convenient to mount and dismount.
Referring to fig. 4-6, 9 and 10, a linkage mechanism is disposed between the first stopper 21 and the second stopper 22, and the linkage mechanism is configured to enable the first stopper 21 to be switched from the first station to the second station and enable the first stopper 21 to be maintained at the second station when the second stopper 22, which is already located in the second stopper groove 112, rotates along the second stopper groove 112 by a preset angle.
Specifically, the linkage mechanism comprises a sliding sleeve 23 and a pressure spring 24, the sliding sleeve 23 is movably and circumferentially fixedly connected with the axis of the nozzle 20, the first limit block 21 is fixed on the sliding sleeve 23, and the pressure spring 24 is assembled such that the elastic force thereof can drive the sliding sleeve 23 to move towards the direction close to the second limit block 22; an elastic deflector rod 25 is formed on the outer wall of the nozzle 20, the second limiting block 22 is formed on the elastic deflector rod 25, and when the first limiting block 21 is at the first station, the end of the elastic deflector rod 25 abuts against the end of the sliding sleeve 23, so that the first limiting block 21 is kept at the first station; be equipped with breach portion 231 on the terminal surface of sliding sleeve 23, second spacing groove 112 is kept away from the one end of first spacing groove 111 is equipped with groove 113, is located in the second spacing groove 112 second stopper 22 from first spacing groove 111 rotates when predetermineeing the angle, second stopper 22 with groove 113 is inconsistent, this moment elasticity driving lever 25 receives groove 113's extrusion and production along the radial deformation of nozzle 20, so that the tip of elasticity driving lever 25 with the tip of sliding sleeve 23 breaks away from and falls into in breach portion 231, at this moment the sliding sleeve 23 will be in under the effect of pressure spring 24 first stopper 21 switches to station two.
Preferably, as shown in fig. 9 and 10, the outer wall of the nozzle 20 is provided with a spline, the inner wall of the sliding sleeve 23 is provided with a spline groove, and the spline groove form a sliding fit.
Preferably, as shown in fig. 5, 6, 9 and 10, a convex pillar 201 is disposed at an end of the nozzle 20 away from the water outlet, and the elastic shift lever 25 is formed on the convex pillar 201.
Preferably, as shown in fig. 5 and 6, in an alternative embodiment of the present invention, the outer diameter of the sliding sleeve 23 is identical to the outer diameter of the convex column 201, and both of them are identical to the inner diameter of the water channel 11.
Further, as shown in fig. 5, 6, 9, and 10, a nut 26 is disposed at an outer end of the nozzle 20, the nut 26 is in threaded connection with the nozzle 20, an extension pipe 261 is disposed at an end of the nut 26 facing the sliding sleeve 23, an outer flange 262 is disposed at an end of the extension pipe 261, the outer flange 262 is in contact with an inner flange 233 disposed on the sliding sleeve 23, and when the nut 26 rotates outward relative to the nozzle 20, the sliding sleeve 23 can be driven to slide in a direction away from the second stopper 22, so that the first stopper 21 returns to the first working position; a step portion 263 is arranged in the central hole of the outer end of the screw cap 26, and the step portion 263 is in blocking connection with the outer end of the nozzle 20.
Preferably, as shown in fig. 2, 5 and 6, the water outlet is provided with a sinking platform, the sliding sleeve 23 is provided with an annular baffle 232, when the first limiting block 21 is located at the second station, the annular baffle 232 is attached to the bottom surface of the sinking platform, and a sealing ring, which is not shown, may be arranged on one side of the annular baffle 232, which is attached to the sinking platform.
Further, the outer end of the nut 26 is provided with a cross recess 264, and the end of the nut 26 is shaped to conform to a conventional nozzle, so that the nozzle 20 of the present invention can be used with a conventional nozzle removal tool.
The specific disassembly and assembly process and principle of the invention are as follows:
before the nozzle 20 is not installed, the first limiting block 21 is located at the first station, the elastic deflector rod 25 is in blocking connection with the end face of the sliding sleeve 23 at the moment, the first limiting block 21 is kept at the first station, and the nut 26 and the nozzle 20 are in a tight-abutting state at the moment; in the installation process of the nozzle 20, the second limiting block 22 is aligned to the first limiting groove 111, and then the nozzle 20 is inserted into the water outlet until the second limiting block 22 reaches the second limiting groove 112; then, the nozzle 20 is rotated to enable the second limiting block 22 to reach the state shown in fig. 6, at this time, the groove 113 extrudes the elastic shift lever 25, so that the elastic shift lever 25 bends inward, the end of the elastic shift lever 25 is staggered with the end of the sliding sleeve 23, at this time, the sliding sleeve 23 loses support, so that the sliding sleeve 23 switches the first limiting block 21 to the second station under the action of the pressure spring 24, and at this time, the elastic shift lever 25 falls into the notch 231; it should be noted that the first limiting block 21 is staggered by a certain angle in the circumferential direction relative to the second limiting block 22, the angle is approximately equal to the preset angle, so when the second limiting block 22 rotates to the state shown in fig. 6, the first limiting block 21 just rotates to align with the first limiting groove 111, and since the sliding sleeve 23 loses support, the first limiting block 21 enters the first limiting groove 111 under the action of the pressure spring 24, so as to realize circumferential fixation of the sliding sleeve 23, and since the sliding sleeve 23 is circumferentially fixed with the nozzle 20, circumferential fixation of the nozzle 20 is also realized, so that the second limiting block 22 is prevented from moving in the opposite direction, and reliable connection between the nozzle 20 and the water outlet is ensured; when the nozzle 20 is disassembled, the nut 26 is rotated reversely, at this time, because the nozzle 20 is fixed circumferentially, the nut 26 will rotate outwards gradually, meanwhile, because the sliding sleeve 23 is in sliding block with the nut 26, the sliding sleeve 23 will be carried by the nut 26 to move outwards together until the first limit block 21 is drawn out from the first limit groove 111, at this time, the nozzle 20 becomes rotatable freely, and the nozzle 20 can be drawn out easily only by rotating the second limit block 22 to the position aligned with the first limit groove 111.
The nozzle 20 and the drill bit assembly are not in threaded connection, the problems of adhesion and failure caused by thread corrosion are solved, the disassembly and assembly efficiency is improved, and the service life of the drill bit is prolonged.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (8)
1. A PDC drill bit with quick assembly disassembly formula nozzle which characterized in that includes:
the water outlet drill bit comprises a drill bit body (10), wherein a water channel (11) is formed in the drill bit body (10), and one end of the water channel (11) penetrates through the surface of the drill bit body (10) to form a water outlet;
a nozzle (20), the nozzle (20) being mounted to the water outlet;
a first limiting groove (111) and a second limiting groove (112) are formed in the inner wall of the water channel (11), the first limiting groove (111) is arranged along the axial direction of the water channel (11), the second limiting groove (112) is arranged along the circumferential direction of the water channel (11), and the first limiting groove (111) is communicated with the second limiting groove (112);
a first limiting block (21) matched with the first limiting groove (111) and a second limiting block (22) matched with the second limiting groove (112) are arranged on the outer wall of the nozzle (20), and the first limiting block (21) is movably arranged between the first station and the second station along the axial direction of the nozzle (20); under the condition that the second limiting block (22) is inserted into the second limiting groove (112) through the first limiting groove (111), when the first limiting block (21) is located at the first station, the first limiting block (21) is located at the outer end of the first limiting groove (111), and when the first limiting block (21) is located at the second station, the first limiting block (21) is located in the first limiting groove (111);
a linkage mechanism is arranged between the first limiting block (21) and the second limiting block (22), and is assembled to enable the first limiting block (21) to be switched from the first station to the second station and enable the first limiting block (21) to be kept at the second station when the second limiting block (22) which is already positioned in the second limiting groove (112) rotates along the second limiting groove (112) by a preset angle;
the linkage mechanism comprises a sliding sleeve (23) and a pressure spring (24), the sliding sleeve (23) is movably and circumferentially and fixedly connected with the axis of the nozzle (20), the first limiting block (21) is fixed on the sliding sleeve (23), and the pressure spring (24) is assembled in a way that the elastic force thereof can drive the sliding sleeve (23) to move towards the direction close to the second limiting block (22); an elastic deflector rod (25) is formed on the outer wall of the nozzle (20), the second limiting block (22) is formed on the elastic deflector rod (25), and when the first limiting block (21) is located at the first station, the end of the elastic deflector rod (25) is abutted against the end of the sliding sleeve (23), so that the first limiting block (21) is kept at the first station; be equipped with breach portion (231) on the terminal surface of sliding sleeve (23), second spacing groove (112) are kept away from the one end of first spacing groove (111) is equipped with groove (113), when being located in second spacing groove (112) second stopper (22) certainly during angle is predetermine in the rotation of first spacing groove (111), second stopper (22) with groove (113) are inconsistent, and at this moment elasticity driving lever (25) receive the extrusion of groove (113) and produce along nozzle (20) radial deformation, so that the tip of elasticity driving lever (25) with the tip of sliding sleeve (23) breaks away from and falls into in breach portion (231), at this moment sliding sleeve (23) will be in under the effect of pressure spring (24) first stopper (21) switch to station two.
2. The PDC drill bit with quick-release nozzle according to claim 1, wherein the nozzle (20) is provided with splines on its outer wall, and the sliding sleeve (23) is provided with spline grooves on its inner wall, and the splines and the spline grooves form a sliding fit.
3. The PDC bit with quick release nozzle of claim 1 wherein the nozzle (20) is provided with a boss (201) at an end thereof remote from the water outlet, the resilient lever (25) being formed on the boss (201).
4. PDC bit with quick disconnect nozzle according to claim 3 wherein the sliding sleeve (23) has an outer diameter corresponding to the outer diameter of the stud (201) and both corresponding to the inner diameter of the water channel (11).
5. The PDC drill bit with the quick-release nozzle according to claim 1, wherein a nut (26) is provided at an outer end of the nozzle (20), the nut (26) is in threaded connection with the nozzle (20), an extension pipe (261) is provided at one end of the nut (26) facing the sliding sleeve (23), an outer flange (262) is provided at an end of the extension pipe (261), the outer flange (262) is abutted with an inner flange (233) provided on the sliding sleeve (23), and when the nut (26) is rotated outwards relative to the nozzle (20), the sliding sleeve (23) can be driven to slide in a direction away from the second stopper (22) so that the first stopper (21) can return to the first station; a step part (263) is arranged in a central hole of the outer end of the screw cap (26), and the step part (263) is in blocking connection with the outer end of the nozzle (20).
6. The PDC drill bit with the quick-assembly nozzle according to claim 1, wherein the water outlet is provided with a sinking platform, the sliding sleeve (23) is provided with an annular baffle (232), and when the first limiting block (21) is located at the second station, the annular baffle (232) is attached to the bottom surface of the sinking platform.
7. The PDC bit having a quick disconnect of claim 6 wherein the annular shield (232) has a sealing ring on a side thereof that engages the counter sink.
8. PDC bit with quick disconnect nozzle according to claim 5, wherein the outer end of the nut (26) is provided with a cross recess (264).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210788607.5A CN114856453B (en) | 2022-07-06 | 2022-07-06 | PDC drill bit with quick assembly disassembly formula nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210788607.5A CN114856453B (en) | 2022-07-06 | 2022-07-06 | PDC drill bit with quick assembly disassembly formula nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114856453A CN114856453A (en) | 2022-08-05 |
| CN114856453B true CN114856453B (en) | 2022-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210788607.5A Active CN114856453B (en) | 2022-07-06 | 2022-07-06 | PDC drill bit with quick assembly disassembly formula nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114856453B (en) |
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2022
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| CN114856453A (en) | 2022-08-05 |
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