CN114352186B - Anti-blocking structure and anti-blocking drilling tool with same - Google Patents
Anti-blocking structure and anti-blocking drilling tool with same Download PDFInfo
- Publication number
- CN114352186B CN114352186B CN202111445799.1A CN202111445799A CN114352186B CN 114352186 B CN114352186 B CN 114352186B CN 202111445799 A CN202111445799 A CN 202111445799A CN 114352186 B CN114352186 B CN 114352186B
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- Prior art keywords
- transmission shaft
- cutting
- wall
- sleeve
- drilling tool
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Links
- 238000005553 drilling Methods 0.000 title claims abstract description 49
- 230000005540 biological transmission Effects 0.000 claims abstract description 104
- 238000005520 cutting process Methods 0.000 claims abstract description 94
- 230000036346 tooth eruption Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/02—Fluid rotary type drives
-
- 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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/05—Swivel joints
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
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)
- Earth Drilling (AREA)
Abstract
The invention discloses an anti-seize structure and an anti-seize drilling tool with the same, relating to the technical field of petroleum drilling and production, comprising a transmission shaft, a transmission shaft cylinder body and a universal shaft shell; the anti-cutting sleeve is fixedly sleeved on the transmission shaft, the other end of the anti-cutting sleeve is covered on the transmission shaft cylinder body and the universal shaft shell together, and at least one cutting knife set is further arranged on the outer wall of the anti-cutting sleeve. The invention not only ensures that the drilling tool can drill in the normal yield when encountering the collapsed stratum and is buried, but also has convenient use and ensured service life.
Description
Technical Field
The invention relates to the technical field of petroleum drilling and production, in particular to an anti-seizing structure and an anti-seizing drilling tool with the same.
Background
When the oil field is drilled, the well repair operation such as the underground cement plug is needed, the screw drilling tool is required to be used, and the screw drilling tool is driven to rotate by inputting high-pressure liquid flow on the ground. Therefore, high-pressure liquid flow input from the ground needs to pass through the screw drilling tool, the screw drilling tool consists of a stator and a rotor, the stator and the rotor are tightly matched, and when the high-pressure liquid flow impacts, the rotor rotates to drive the drill bit to rotate so as to perform well repairing operation. However, when the stratum which is easy to collapse is drilled, the stratum is often collapsed due to crushing or expansion and the like, so that coal dust cannot be discharged and broken in time, a drilling tool is buried or blocked, and if the situation is serious, the whole drilling tool cannot be lifted or lowered, the operation and the service life are influenced, and economic loss is caused.
Disclosure of Invention
The invention aims to provide an anti-seize structure and an anti-seize drilling tool with the same, which not only ensure that the drilling tool can drill in normal yield when encountering a collapsed stratum and is buried, but also are convenient to use and ensure the service life of the drilling tool.
In order to achieve the aim of the invention, the technical scheme adopted is as follows: an anti-seize structure comprises a transmission shaft, a transmission shaft cylinder body and a universal shaft shell; the anti-cutting sleeve is fixedly sleeved on the transmission shaft, the other end of the anti-cutting sleeve is covered on the transmission shaft cylinder body and the universal shaft shell together, and at least one cutting knife set is further arranged on the outer wall of the anti-cutting sleeve.
Further, a small annular space is formed between the inner wall of the anti-clamping sleeve and the outer wall of the transmission shaft cylinder body, and between the inner wall of the anti-clamping sleeve and the outer wall of the universal shaft shell.
Furthermore, the inside hollow structure that is of transmission shaft still has offered the through-hole of intercommunication transmission shaft inside and small-size annular space on the transmission shaft.
Further, cutting teeth are further arranged at two ends of the anti-cutting sleeve.
Further, the anti-cutting sleeve is in threaded connection with the transmission shaft.
Further, the cutting knife set is spiral, and the surface of the cutting knife set is saw-tooth.
Further, the cutting knife set is also provided with a through hole which transversely penetrates.
Furthermore, the transmission shaft is also provided with a limiting ring, and the inner wall of the anti-cutting sleeve is provided with a limiting spigot matched with the limiting ring.
Further, a transmission shaft assembly which is buckled with the front end face of the transmission shaft cylinder body is arranged in the transmission shaft cylinder body, and a sealing ring is arranged between the front end of the transmission shaft assembly and the anti-cutting sleeve.
An anti-seize drilling tool comprising an anti-seize structure as defined in any one of the preceding claims.
Further, the universal shaft assembly, the rotor assembly and the drill bit are sequentially connected, the drill bit is arranged on the transmission shaft, and the universal shaft assembly is further provided with a flow passage which is communicated between the inside of the transmission shaft and the inner wall of the universal shaft shell.
The invention has the advantages that,
1. Through fixed cover being equipped with the anti-cutting ferrule on the transmission shaft, make the transmission shaft drive anti-cutting ferrule rotation when rotating to through being equipped with the cutting knife tackle on the anti-cutting ferrule, when making anti-cutting ferrule rotate along with the transmission shaft, the cutting knife tackle on the anti-cutting ferrule is maintained the wall of a well, when meetting the wall of a well to have the piece or the wall of a well collapses, the cutting knife tackle on the anti-cutting ferrule can be broken the piece of falling, thereby effectively prevent that the drilling tool from taking place the card to block, and make the drilling tool can normally lift up or put down.
2. Because prevent cutting ferrule inner wall and transmission shaft barrel outer wall, cardan shaft casing outer wall clearance fit, make the inside small-size annular space that forms of cutting ferrule, and directly enter into this small-size annular space through the mud that leaks between transmission shaft barrel and the cardan shaft casing or transmission shaft assembly department to finally spout through the rear end of preventing the cutting ferrule, make the rear end department of preventing the cutting ferrule form reverse efflux, reach the purpose of wasing this department, can not only avoid the detritus to take place to pile up, and effectively prevent that the drilling tool from producing the card and hinder.
Drawings
FIG. 1 is a cross-sectional view of an anti-seize drilling tool provided by the present invention;
FIG. 2 is a block diagram of an anti-ferrule;
FIG. 3 is a block diagram of another embodiment of an anti-ferrule;
fig. 4 is a cross-sectional view of the anti-ferrule.
The reference numerals and corresponding part names in the drawings:
1. The novel drilling tool comprises a transmission shaft, 2, a transmission shaft cylinder body, 3, a universal shaft shell, 4, an anti-cutting sleeve, 5, a cutting knife set, 6, cutting teeth, 7, a limiting ring, 8, a limiting spigot, 9, a transmission shaft assembly, 10, a sealing ring, 11, a universal shaft assembly, 12, a rotor assembly, 13, a circulation channel, 14, a small annular space, 15, a spiral guide groove, 16, a through hole, 17, a through hole, 18 and a drill bit.
Detailed Description
The invention will now be described in further detail by way of specific examples of embodiments in connection with the accompanying drawings.
As shown in fig. 1 to 4, the anti-seize structure provided by the invention comprises a transmission shaft 1, a transmission shaft cylinder 2 and a universal shaft shell 3, wherein the transmission shaft cylinder 2 and the universal shaft shell 3 are sleeved on the transmission shaft 1 together, the front end of the transmission shaft 1 is used for installing a drill bit, and the rear end of the transmission shaft 1 is used for being connected with a universal shaft assembly 11; the transmission shaft 1, the transmission shaft cylinder 2 and the universal shaft shell 3 are sleeved with the anti-clamping sleeve 4, the front end of the anti-clamping sleeve 4 is fixed on the transmission shaft 1, the middle part of the anti-clamping sleeve 4 can rotate relative to the transmission shaft cylinder 2, the rear end of the anti-clamping sleeve 4 can rotate relative to the universal shaft shell 3, when the transmission shaft 1 rotates, the transmission shaft 1 drives the anti-clamping sleeve 4 to synchronously rotate, and the anti-clamping sleeve 4 can not drive the transmission shaft cylinder 2 and the universal shaft shell 3 to rotate when rotating.
The outer wall of the anti-cutting sleeve 4 is also provided with at least one cutting knife set 5, the cutting knife set 5 and the anti-cutting sleeve 4 are integrally formed, and because the anti-cutting sleeve 4 is fixed with the transmission shaft 1, the cutting knife set 5 on the anti-cutting sleeve 4 trims the well wall when the transmission shaft 1 rotates, and when the well wall is broken or collapses, the cutting knife set 5 on the anti-cutting sleeve 4 can break the broken block, thereby effectively preventing the drilling tool from blocking, enabling the drilling tool to be lifted or lowered normally, being convenient to use and ensuring the service life of the drilling tool.
In some embodiments, the inner wall of the anti-cutting sleeve 4 is in clearance fit with the outer wall of the transmission shaft cylinder 2 and the outer wall of the universal shaft housing 3, so that the anti-cutting sleeve 4, the transmission shaft cylinder 2 and the universal shaft housing 3 can be effectively prevented from being worn when the transmission shaft 1 drives the anti-cutting sleeve 4 to rotate, a small annular space 14 is formed between the inner wall of the anti-cutting sleeve 4 and the outer wall of the transmission shaft cylinder 2 and between the inner wall of the anti-cutting sleeve 4 and the universal shaft housing 3, mud leaked from the position of the transmission shaft cylinder 2 and the universal shaft housing 3 or the position of the transmission shaft assembly 9 in the drilling process can be directly introduced into the small annular space 14, and as the rear end of the small annular space 14 is open, the mud introduced into the small annular space 14 is ejected from the rear end of the anti-cutting sleeve 4, so that reverse jet flow is formed at the rear end of the anti-cutting sleeve 4, the purpose of cleaning the position can be achieved, rock debris can be prevented from being accumulated, and the drilling tool can be effectively prevented from being blocked.
In some embodiments, the inside hollow structure that is of transmission shaft 1, still offer the through-hole 17 that communicates the inside of transmission shaft 1 and small-size annular space 14 on the transmission shaft 1, make a portion of mud can directly enter into in the small-size annular space 14 through-hole 17, guarantee to enter into the mud in the small-size annular space 14 and have sufficient pressure, make the mud that jets out through the anti-cutting ferrule 4 rear end have sufficient impact force, not only make the cleaning performance of wall of a well better, and make the impact effect of detritus better.
In some embodiments, cutting teeth 6 are further arranged at two ends of the anti-cutting sleeve 4, the cutting teeth 6 are multiple, and the multiple cutting teeth 6 are distributed at intervals along the circumferential direction of the anti-cutting sleeve 4, so that the cutting teeth 6 at the front end of the anti-cutting sleeve 4 can drill along with the rotation of the anti-cutting sleeve 4 in the drilling process, the drilling effect of a drilling tool is better, and the phenomenon that the falling block of the drilling tool which collapses or falls in the drilling process is blocked due to the front end of the anti-cutting sleeve 4 is effectively avoided.
In some embodiments, the chamfer is still provided with at anti-cutting ferrule 4 both ends, and cutting tooth 6 is located the chamfer, and the axis direction and the chamfer of cutting tooth 6 make the drilling tool in the drilling process, and anti-cutting ferrule 4's advance is more convenient, avoids collapsing or falling fall the piece and anti-cutting ferrule 4 front end terminal surface card is dead, makes the drilling effect of drilling tool better.
In some embodiments, the anti-clamping sleeve 4 is in threaded connection with the transmission shaft 1, so that the connection mode between the anti-clamping sleeve 4 and the transmission shaft 1 is more convenient; meanwhile, in order to prevent the drilling tool from falling off in the drilling process, the screwing direction of the anti-clamping sleeve 4 can be opposite to the drilling direction of the transmission shaft 1, so that the screwing direction of the anti-clamping sleeve 4 is always subjected to one example in the drilling process of the drilling tool, and the fixing effect of the anti-clamping sleeve 4 is better.
In some embodiments, the cutting knife sets 5 are spiral, the cutting knife sets 5 are spirally arranged along the outer wall of the anti-cutting sleeve 4, and the plurality of cutting knife sets 5 are uniformly and alternately arranged along the circumferential direction of the anti-cutting sleeve 4, two ends of each cutting knife set 5 are respectively flush with two ends of the anti-cutting sleeve 4, when the anti-cutting sleeve 4 rotates along with the transmission shaft 1, a spiral guide groove 15 is formed between two adjacent cutting knife sets 5 due to the fact that the outer walls of the cutting knife sets 5 are matched with the well wall, so that mud can flow through the spiral guide groove 15, but the anti-cutting sleeve 4 can drive mud in the spiral guide groove 15 to synchronously move during rotation, so that the mud in the spiral guide groove 15 is subjected to a centrifugal force, the flow speed of the mud can be increased, and the mud sent out through the spiral guide groove 15 forms reverse jet flow, so that the cleaning effect of the well wall is better. The surface of the cutting knife set 5 is in a zigzag shape, so that the cutting knife set 5 has a simpler structure while the well wall is trimmed by the cutting knife set 5.
In some embodiments, the cutting blade set 5 further has a through hole 16 extending transversely therethrough, and the axial direction of the through hole 16 is consistent with the width direction of the cutting blade set 5 or the axial direction of the through hole 16 is inclined with the width of the cutting blade set 5, so that the weight of the anti-cutting sleeve 4 can be reduced, mud can flow through the through hole 16, the flow of the mud in the spiral guide groove 15 is more turbulent, the mud is effectively prevented from being deposited in the spiral guide groove 15, and the obstruction to the flow of the mud is avoided.
In some embodiments, the through-holes 16 are rectangular holes or circular holes or other shapes, as shown in fig. 3, the through-holes 16 are rectangular holes, as shown in fig. 4, the through-holes 16 are rectangular holes.
In some embodiments, the transmission shaft 1 is further provided with a limiting ring 7, the limiting ring 7 and the transmission shaft 1 are of an integrated structure, and the inner wall of the anti-clamping sleeve 4 is provided with a limiting spigot 8 matched with the limiting ring 7, and through the matching of the limiting ring 7 and the limiting spigot 8, the anti-clamping sleeve 4 can be limited during installation, and the transmission shaft 1 can not generate displacement relative to the transmission shaft 1 when driving the anti-clamping sleeve 4 to drill, so that the installation of the anti-clamping sleeve 4 is more stable.
In some embodiments, a transmission shaft assembly 9 fastened to the front end surface of the transmission shaft barrel 2 is arranged in the transmission shaft barrel 2, the front end section of the transmission shaft assembly 9 is abutted against the inner side of the limiting ring 7, the transmission shaft assembly 9 is installed, and a primary seal is formed between the transmission shaft assembly 9 and the limiting ring 7; meanwhile, a sealing ring 10 is further arranged between the front end of the transmission shaft assembly 9 and the anti-cutting sleeve 4, so that the sealing effect between the transmission shaft assembly 9 and the anti-cutting sleeve 4 is better, the front end of the anti-cutting sleeve 4 is sealed, mud is effectively prevented from being discharged from between the front end of the anti-cutting sleeve 4 and the outer wall of the transmission shaft 1, the spraying effect of the mud at the rear end of the anti-cutting sleeve 4 is better, and the cleaning effect of a well wall is better. At this time, in order to avoid that the transmission shaft assembly 9 will block the through hole 17 when being installed, the transmission shaft assembly 9 is also provided with a communication hole for communicating the through hole 17 with the small annular space 14, so that the inside of the transmission shaft 1 is ensured to be communicated with the small annular space 14, and therefore, enough slurry is ensured to enter the small annular space 14, and the pressure of the slurry in the small annular space 14 is ensured.
The anti-sticking structure that this embodiment provided can be used to in current drilling tool, when being used for drilling tool, transmission shaft 1 casing can be connected with rotor assembly 12 casings, transmission shaft 1 is connected with cardan shaft assembly 11 assembly, the drill bit is installed on transmission shaft 1, when transmission shaft 1 rotates through cardan shaft assembly 11 transmission, transmission shaft 1 drives anti-sticking sleeve 4 synchronous rotation, cutting tooth 6 on the anti-sticking sleeve 4 expands the wall of a well or carries out the breakage to the falling piece that collapses, and cutting knife group 5 then carries out the repair to the wall of a well after expanding, and the rear end that directly gets into anti-sticking sleeve 4 through the mud that leaks between transmission shaft barrel 2 and cardan shaft casing 3 or transmission shaft assembly 9 department sprays, wash the wall of a well or clear up the rock fragments of piling up.
The invention also provides an anti-seize drilling tool which adopts the anti-seize structure provided in the embodiment.
The anti-seize drilling tool further comprises a universal shaft assembly 11, a rotor assembly 12 and a drill bit 18, wherein the rotor assembly 12, the universal shaft assembly 11 and the transmission shaft 1 are sequentially connected, the drill bit 18 is arranged on the transmission shaft 1, the universal shaft assembly 11 is further provided with a circulation channel 13 which is communicated between the inside of the transmission shaft 1 and the inner wall of the universal shaft shell 3, so that slurry entering into the rotor assembly 12 enters into the transmission shaft 1 through the circulation channel 13 after entering into the space between the universal shaft shell 3 and the universal shaft assembly 11, and finally enters into the drill bit through the inside of the transmission shaft 1, and the drill bit cools the cutting teeth 6 in the drilling process; meanwhile, the mud entering between the universal shaft shell 3 and the universal shaft assembly 11 can enter the anti-cutting sleeve 4 through the leakage between the transmission shaft cylinder 2 and the universal shaft shell 3 or at the transmission shaft assembly 9, and finally is sprayed out through the rear end of the anti-cutting sleeve 4, so that the rear end of the anti-cutting sleeve 4 forms reverse jet flow, the purpose of cleaning the position is achieved, rock scraps can be avoided, and the drilling tool is effectively prevented from being blocked.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. An anti-seize structure is characterized by comprising a transmission shaft (1), a transmission shaft cylinder (2) and a universal shaft shell (3); an anti-cutting sleeve (4) is fixedly sleeved on the transmission shaft (1), the other end of the anti-cutting sleeve (4) is covered on the transmission shaft cylinder body (2) and the universal shaft shell (3) together, and cutting teeth (6) are arranged at two ends of the anti-cutting sleeve (4); the outer wall of the anti-cutting sleeve (4) is also provided with at least one cutting knife set (5), the cutting knife set (5) is spiral, and the surface of the cutting knife set (5) is serrated; a small annular space (14) is formed between the inner wall of the anti-clamping sleeve (4) and the outer wall of the transmission shaft cylinder body (2) and between the inner wall of the anti-clamping sleeve (4) and the outer wall of the universal shaft shell (3), and the rear end of the small annular space (14) is open; the inside of the transmission shaft (1) is of a hollow structure, and a through hole (17) for communicating the inside of the transmission shaft (1) with the small annulus (14) is also formed in the transmission shaft (1); a limiting ring (7) is further arranged on the transmission shaft (1), and a limiting spigot (8) matched with the limiting ring (7) is arranged on the inner wall of the anti-clamping sleeve (4); a transmission shaft assembly (9) which is buckled with the front end surface of the transmission shaft cylinder body (2) is arranged in the transmission shaft cylinder body, and a sealing ring (10) is arranged between the front end of the transmission shaft assembly (9) and the anti-cutting sleeve (4).
2. The anti-seize structure according to claim 1, characterized in that the cutting blade set (5) is also provided with a through-hole (16) extending transversely therethrough.
3. An anti-seize drilling tool comprising an anti-seize arrangement as claimed in claim 1 or 2.
4. A jam-proof drilling tool as claimed in claim 3, further comprising a cardan shaft assembly (11), a rotor assembly (12) and a drill bit (18), wherein the rotor assembly (12), the cardan shaft assembly (11) and the transmission shaft (1) are connected in sequence, the drill bit (18) is mounted on the transmission shaft (1), and the cardan shaft assembly (11) is further provided with a flow passage (13) for communicating the inside of the transmission shaft (1) with the inner wall of the cardan shaft housing (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111445799.1A CN114352186B (en) | 2021-08-20 | 2021-08-20 | Anti-blocking structure and anti-blocking drilling tool with same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110958050.0A CN113404423B (en) | 2021-08-20 | 2021-08-20 | Anti-sticking structure and anti-sticking drilling tool with same |
| CN202111445799.1A CN114352186B (en) | 2021-08-20 | 2021-08-20 | Anti-blocking structure and anti-blocking drilling tool with same |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110958050.0A Division CN113404423B (en) | 2021-08-20 | 2021-08-20 | Anti-sticking structure and anti-sticking drilling tool with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114352186A CN114352186A (en) | 2022-04-15 |
| CN114352186B true CN114352186B (en) | 2024-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111445799.1A Active CN114352186B (en) | 2021-08-20 | 2021-08-20 | Anti-blocking structure and anti-blocking drilling tool with same |
| CN202110958050.0A Active CN113404423B (en) | 2021-08-20 | 2021-08-20 | Anti-sticking structure and anti-sticking drilling tool with same |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110958050.0A Active CN113404423B (en) | 2021-08-20 | 2021-08-20 | Anti-sticking structure and anti-sticking drilling tool with same |
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| Country | Link |
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| CN (2) | CN114352186B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352186B (en) * | 2021-08-20 | 2024-04-30 | 四川深远石油钻井工具股份有限公司 | Anti-blocking structure and anti-blocking drilling tool with same |
| CN115419368B (en) * | 2022-09-14 | 2023-05-12 | 盐城市新永佳石油机械制造有限公司 | Integral anti-seize triangular screw drilling tool |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114352186A (en) | 2022-04-15 |
| CN113404423B (en) | 2021-11-09 |
| CN113404423A (en) | 2021-09-17 |
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