CN214886873U - Scalable stabilizing tooth of autogyration formula drill bit - Google Patents
Scalable stabilizing tooth of autogyration formula drill bit Download PDFInfo
- Publication number
- CN214886873U CN214886873U CN202121144252.3U CN202121144252U CN214886873U CN 214886873 U CN214886873 U CN 214886873U CN 202121144252 U CN202121144252 U CN 202121144252U CN 214886873 U CN214886873 U CN 214886873U
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- China
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- inner cylinder
- sliding
- sliding block
- outer shell
- drill bit
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- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 abstract description 5
- 238000013016 damping Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to a self-rotating drill bit telescopic stabilizing tooth, which comprises an outer shell and an inner cylinder; the sliding block is arranged on the upper end cover; the sliding block is sealed with the lower end of the outer shell, and the bottom end of the sliding block is provided with a stabilizing tooth; the inner cylinder is connected with the upper end cover, and the other end of the inner cylinder is connected with the lower end cover; the inner wall of the outer shell is provided with a positioning step; the lower part of the inner cylinder is connected with the sliding block in a sliding way through a sliding connecting block; the end part of the sliding connecting block is hemispherical; an arc-shaped slide way is arranged on the side wall of the sliding block, the arc-shaped slide way is a circular groove with one closed end, the depth of the circular groove is consistent with the radius of the hemisphere at the end part of the sliding connecting block, and the width of the circular groove is consistent with the diameter of the hemisphere at the end part of the sliding connecting block; the lower part of the inner cylinder is in line contact with the sliding block through the sliding connecting block on the arc-shaped slideway, so that the sliding block and the middle part of the inner cylinder form a cylindrical cavity with variable volume. The utility model discloses can realize the self-adaptation cutting of drill bit sword tooth in the pit.
Description
Technical Field
The utility model belongs to the oil drilling equipment field, concretely relates to scalable stable tooth of autogyration formula drill bit for oil and gas probing process.
Background
The PDC teeth are main cutting elements of the PDC drill bit, and the quality of the teeth directly determines the overall rock breaking performance of the drill bit. However, the conventional PDC teeth are directly welded on the matrix of the drill bit, and the impact damage of the PDC teeth becomes one of the major bottlenecks that restrict the further development of the PDC drill bit, and particularly, in the drilling process of complex strata such as soft and hard staggered formations, the PDC teeth are very easy to have impact damage under the load action such as impact and variable load, and the drilling efficiency is seriously affected. The scheme for damping the drill bit in the prior art mainly comprises improved damping of the cutter teeth of the drill bit and active damping of the drill bit. The bit teeth are improved to reduce vibration and the expansion force of the bit teeth cannot be adjusted, and the bit teeth are always folded along with the increase of the hardness of stratum rock, so that the bit teeth always face the problem of expansion of vibration amplitude; active drill bit vibration elimination currently mainly adopts a hydraulic system to adjust the expansion of drill bit cutter teeth, and has the disadvantages of more hydraulic elements, complex system, high manufacturing requirement and high price.
Disclosure of Invention
The utility model aims at providing a to above-mentioned problem, provide a scalable stable tooth of autogyration formula drill bit, its self-adaptation cutting that can realize drill bit sword tooth in the pit reduces the drill bit sword tooth and takes place the impact damage.
The technical scheme of the utility model lies in:
a self-rotating drill telescopic stabilizing tooth comprises an outer shell and an inner cylinder positioned in the outer shell; the upper end cover is fixed in the outer shell and on the inner cylinder; the sliding block is sealed with the lower end of the outer shell, and the bottom end of the sliding block is provided with a stabilizing tooth; the inner cylinder is connected with the upper end cover, and the other end of the inner cylinder is connected with the lower end cover;
the inner wall of the outer shell is provided with a positioning step; the outer diameter of the middle part of the inner cylinder is smaller than that of the lower part of the inner cylinder;
the lower part of the inner cylinder is connected with the sliding block in a sliding way through a sliding connecting block;
the end part of the sliding connecting block is hemispherical; an arc-shaped slide way is arranged on the side wall of the sliding block, the arc-shaped slide way is a circular groove with one closed end, the depth of the circular groove is consistent with the radius of the hemisphere at the end part of the sliding connecting block, and the width of the circular groove is consistent with the diameter of the hemisphere at the end part of the sliding connecting block; the lower part of the inner cylinder is in line contact with the sliding block through the sliding connecting block on the arc-shaped slideway, so that the sliding block and the middle part of the inner cylinder form a cylindrical cavity with variable volume.
The upper end cover and the outer shell as well as the sliding connecting block and the inner cylinder are connected through threads.
And a spring seat is arranged at one end of the upper end cover facing the inner cylinder, and the spring is arranged in the spring seat.
The sliding block and the lower end of the outer shell are connected in a lower sealing mode.
The technical effects of the utility model reside in that:
the utility model relates to a scalable stable tooth of autogyration formula drill bit, simple structure, convenient to use, the utility model relates to a scalable stable tooth of autogyration formula drill bit, its self-adaptation cutting that can realize drill bit sword tooth in the pit reduces the drill bit sword tooth and takes place the impact and damage, but wide application in the stable tooth of PDC drill bit.
Drawings
Fig. 1 is the utility model discloses a scalable stabilizer structure sketch map of autogyration formula drill bit.
Fig. 2 is a schematic structural diagram of an arc-shaped slide way.
Reference numerals: 1. an upper end cover; 2. an outer housing; 3. a spring; 4. a cylindrical cavity; 5. an inner barrel; 6. a slider; 7. sealing the lower part; 8. a sliding connection block; 9. an arc-shaped slideway; 10. positioning a step; 11. the teeth are stabilized.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
A self-rotating drill telescopic stabilizing tooth comprises an outer shell 2 and an inner cylinder 5 positioned in the outer shell 2; the sliding block type motor also comprises an upper end cover 1 and a sliding block 6, wherein the upper end cover 1 is fixed inside the outer shell 2 and on the inner cylinder 5; the sliding block 6 is sealed with the lower end of the outer shell 2, and the bottom end of the sliding block 6 is provided with a stabilizing tooth 11; the device also comprises a spring 3, wherein one end of the spring 3 is connected with the upper end cover 1, and the other end is connected with the inner cylinder 5; a positioning step 10 is arranged on the inner wall of the outer shell 2; the outer diameter of the middle part of the inner cylinder 5 is smaller than that of the lower part of the inner cylinder 5; the lower part of the inner cylinder 5 is connected with the sliding block 6 in a sliding way through a sliding connecting block 8; the end part of the sliding connecting block 8 is hemispherical; an arc-shaped slideway 9 is arranged on the side wall of the sliding block 6, the arc-shaped slideway 9 is a circular groove with one closed end, the depth of the circular groove is consistent with the radius of the hemisphere at the end part of the sliding connection block 8, and the width of the circular groove is consistent with the diameter of the hemisphere at the end part of the sliding connection block 8; the lower part of the inner cylinder 5 is in line contact with the sliding block 6 through a sliding connecting block 8 at an arc-shaped slideway 9, so that the sliding block 6 and the middle part of the inner cylinder 5 form a cylindrical cavity 4 with variable volume.
The specific implementation process of the embodiment is as follows:
when the utility model is used, the utility model is packaged at the position of the drill bit teeth, when the drill bit is drilled in hard stratum, the stabilizing teeth 11 are impacted to move upwards, so that the sliding connecting block 8 is driven by the screw thread to drive the inner cylinder 5 to move upwards, the spring 3 is stressed to compress and store energy, meanwhile, the sliding block 6 has the upward movement speed greater than that of the inner cylinder 5 due to the existence of the arc-shaped slideway 9, the cylindrical cavity 4 is reduced, and the stabilizing teeth 11 are quickly contracted to be protected;
when the drill meets soft stratum, the stress of the drill bit teeth is reduced, the spring 3 extends, the energy storage is released, the inner cylinder 5 and the belt sliding block 6 are driven to move downwards, the downward movement speed of the sliding block 6 is smaller than that of the inner cylinder 5 due to the existence of the arc-shaped slideway 9, the cylindrical cavity 4 is enlarged, and the stabilizing teeth 11 cannot extend suddenly, so that the drill bit is protected.
Example 2
On the basis of embodiment 1, the method further comprises the following steps: the upper end cover 1 and the outer shell 2, and the sliding connection block 8 and the inner cylinder 5 are connected through threads. And a spring seat is arranged at one end of the upper end cover 1 facing the inner cylinder 5, and the spring 3 is arranged in the spring seat. The sliding block 6 is connected with the lower end of the outer shell 2 by a lower seal 7.
The utility model discloses simple structure, convenient to use, its self-adaptation cutting that can realize drill bit sword tooth in the pit reduces the drill bit sword tooth and takes place the impact and damage, but wide application in the stabilizer blade 11 of PDC drill bit.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. A self-rotating drill telescopic stabilizing tooth comprises an outer shell (2) and an inner cylinder (5) positioned inside the outer shell (2); the method is characterized in that: the sliding block structure is characterized by further comprising an upper end cover (1) and a sliding block (6), wherein the upper end cover (1) is fixed inside the outer shell (2) and on the inner cylinder (5); the sliding block (6) is sealed with the lower end of the outer shell (2), and the bottom end of the sliding block (6) is provided with a stabilizing tooth (11); the device also comprises a spring (3), wherein one end of the spring (3) is connected with the upper end cover (1), and the other end of the spring (3) is connected with the inner cylinder (5); a positioning step (10) is arranged on the inner wall of the outer shell (2); the outer diameter of the middle part of the inner cylinder (5) is smaller than that of the lower part of the inner cylinder (5); the lower part of the inner cylinder (5) is connected with the sliding block (6) in a sliding way through a sliding connecting block (8); the end part of the sliding connecting block (8) is hemispherical; an arc-shaped slide way (9) is arranged on the side wall of the sliding block (6), the arc-shaped slide way (9) is an annular groove with one closed end, the depth of the annular groove is consistent with the radius of the hemisphere at the end part of the sliding connecting block (8), and the width of the annular groove is consistent with the diameter of the hemisphere at the end part of the sliding connecting block (8); the lower part of the inner cylinder (5) is in line contact with the sliding block (6) through a sliding connecting block (8) on an arc-shaped slideway (9), so that the sliding block (6) and the middle part of the inner cylinder (5) form a cylindrical cavity with variable volume.
2. The self-rotating drill bit retractable stabilizing tooth according to claim 1, wherein: the upper end cover (1) is connected with the outer shell (2) through threads, and the sliding connection block (8) is connected with the inner barrel (5) through threads.
3. The self-rotating drill bit retractable stabilizing tooth of claim 2, wherein: the upper end cover (1) is provided with a spring seat towards one end of the inner cylinder (5), and the spring (3) is arranged in the spring seat.
4. The self-rotating drill bit retractable stabilizing tooth according to claim 3, wherein: the sliding block (6) is connected with the lower end of the outer shell (2) by a lower seal (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121144252.3U CN214886873U (en) | 2021-05-26 | 2021-05-26 | Scalable stabilizing tooth of autogyration formula drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121144252.3U CN214886873U (en) | 2021-05-26 | 2021-05-26 | Scalable stabilizing tooth of autogyration formula drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214886873U true CN214886873U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121144252.3U Expired - Fee Related CN214886873U (en) | 2021-05-26 | 2021-05-26 | Scalable stabilizing tooth of autogyration formula drill bit |
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| CN (1) | CN214886873U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941531A (en) * | 2022-07-06 | 2022-08-26 | 河海大学 | Cutter head of multiple stratum shield tunneling machines capable of reducing wear rate of cutters and method |
-
2021
- 2021-05-26 CN CN202121144252.3U patent/CN214886873U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941531A (en) * | 2022-07-06 | 2022-08-26 | 河海大学 | Cutter head of multiple stratum shield tunneling machines capable of reducing wear rate of cutters and method |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211126 |