CN220522524U - Tieback ware is used in workover salvage - Google Patents
Tieback ware is used in workover salvage Download PDFInfo
- Publication number
- CN220522524U CN220522524U CN202322004549.5U CN202322004549U CN220522524U CN 220522524 U CN220522524 U CN 220522524U CN 202322004549 U CN202322004549 U CN 202322004549U CN 220522524 U CN220522524 U CN 220522524U
- Authority
- CN
- China
- Prior art keywords
- tieback
- cylinder
- upper joint
- connecting cylinder
- workover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 210000002445 nipple Anatomy 0.000 claims abstract description 17
- 238000010008 shearing Methods 0.000 claims abstract description 16
- 241000251468 Actinopterygii Species 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a tieback device for well repair and salvage, and belongs to the technical field of petroleum underground equipment. The tieback comprises a feeding pup joint, an upper joint, a connecting cylinder, a tieback cylinder and a guide shoe which are connected in sequence; the feeding nipple is connected with the upper joint through a shearing pin, and the upper end of the upper joint forms a horn mouth; the lower end of the guide shoe forms a spiral guide structure. The utility model is used for guiding the underground fish to be connected with the upper tool correctly, has convenient and reliable operation process and has better convenience and practicability.
Description
Technical Field
The utility model relates to the technical field of petroleum underground equipment, in particular to a tieback device for well repair and salvage.
Background
With the rapid development of the offshore oil industry, the operation timeliness and the operation cost of oil field development and production become more and more critical problems, especially in the well repair and salvage operation. In the well repairing and salvaging operation at the present stage, the fish can be only introduced by trying to rotate different positions of the drilling tool, and the salvaging efficiency is greatly reduced, so that the development of a simple and practical tieback guiding tool is particularly important for smoothly completing the correct connection between the downhole tool and the upper tool.
Disclosure of Invention
The utility model provides a tieback device for well repair and salvage, which aims to solve the technical problems. The tieback device can effectively and accurately introduce upper tools and lower fish, and well realizes tool guiding connection effect.
The application is realized by adopting the following technical scheme.
The tieback device for well repair and salvage comprises a feeding pup joint, an upper joint, a connecting cylinder, a tieback cylinder and a guide shoe which are connected in sequence; the feeding nipple is connected with the upper joint through a shearing pin, and the upper end of the upper joint forms a horn mouth; the lower end of the guide shoe forms a spiral guide structure.
Further, threaded connection is adopted between the upper joint and the connecting cylinder, between the connecting cylinder and the tieback cylinder and between the tieback cylinder and the guide shoe.
Further, the inner wall of the upper end of the feeding nipple forms threads, and an anti-rotation boss and a shearing groove are arranged in the middle of the outer wall of the feeding nipple.
Furthermore, the inner wall of the upper joint is provided with an anti-rotation key slot matched with the anti-rotation boss and a threaded hole matched with the shearing pin and the shearing groove.
Furthermore, the middle part of the connecting cylinder is reduced in diameter to be in a horn shape; the lower part of the connecting cylinder forms a limit shoulder.
Furthermore, the middle part of the tieback cylinder is firstly reduced in diameter and then expanded in diameter.
The present application has the following advantageous effects.
The utility model can accurately and effectively realize the connection of the upper tool and the lower tool, the upper end of the tieback is provided with the horn mouth, the upper tool can be accurately introduced, the slope formed at the lower end of the guide shoe can be accurately introduced into the underground fish, the diameter-changing design of the inside of the connecting cylinder and the tieback can also ensure the accurate connection of the inside of the tools, and the situation of jamming of the tools in the underground is effectively avoided. The utility model has simple structure, safe and reliable operation, improves the operation time efficiency and reduces the operation cost.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a section view along A-A in fig. 1.
1, feeding a short joint; 12. anti-rotation boss; 2. an upper joint; 21. a horn mouth; 3. shearing pins; 4. a connecting cylinder; 41. a limit shoulder; 5. a tieback cylinder; 6. guiding shoes; 61. a spiral guiding structure.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
As shown in fig. 1-2, a tieback for well repair and salvage comprises a feeding nipple 1, an upper joint 2, a connecting cylinder 4, a tieback cylinder 5 and a guide shoe 6.
The inner surface of the upper end of the feeding nipple 1 is provided with threads for being in threaded connection with a drill rod; the middle part of the outer wall of the feeding nipple 1 is provided with an anti-rotation boss 12 and a shearing groove. The anti-rotation boss 12 is used for being matched with an anti-rotation key groove of the upper joint 2 to prevent the feeding nipple 1 from relative rotation after being inserted into the upper joint 2, so as to play a limiting role; the shearing groove is used for being matched with a threaded hole on the upper joint 2 to realize the installation of the shearing pin 3.
The upper end of the upper joint 2 is provided with a horn mouth 21, and the horn mouth 21 can ensure the accurate falling of an upper tool; an anti-rotation key slot is arranged on the inner wall of the upper joint 2 below the bell mouth 21, and after the feeding nipple 1 is inserted into the upper joint 2 from the bell mouth 21, the anti-rotation boss 12 is embedded into the anti-rotation key slot to prevent the feeding nipple 1 from rotating circumferentially; the middle part of the upper joint 2 is provided with a plurality of threaded holes along the circumference, and the shearing pin 3 is inserted into the threaded holes and the shearing grooves to realize the fixed connection between the upper joint 2 and the feeding nipple 1; the lower end of the upper joint 2 is provided with connecting threads for being connected with the connecting cylinder 4.
The upper end and the lower end of the connecting cylinder 4 are respectively provided with threads, and are respectively connected with the upper joint 2 and the tieback cylinder 5. The middle part of the connecting cylinder 4 is reduced in diameter in a horn shape, a limiting shoulder 41 is formed below the reduced diameter part, and the underground fish is limited by the position.
Threads are arranged at the upper end and the lower end of the tieback cylinder 5 and are respectively connected with the connecting cylinder 4 and the guide shoes 6. The middle part of the tieback cylinder 5 is firstly reduced in diameter and then expanded in diameter. The reduced diameter part of the connecting cylinder 4 and the reduced neck part of the tieback cylinder 5 can ensure the accurate connection of the tool inside, thereby effectively avoiding the situation that the tool is blocked and bumped underground.
The upper end of the guide shoe 6 is provided with threads for being connected with the tieback cylinder 5; the lower end of the guide shoe 6 is provided with a spiral guide structure 61, and the spiral guide structure 61 can accurately guide the underground fish.
The tieback device is mainly used for tool connection guiding in well repair and salvage operations. In the field operation process, the utility model is put down along with a drill rod, and the drill rod is connected with the screw thread of the feeding nipple 1, so that the upper joint 2, the shearing pin 3, the connecting cylinder 4, the tieback cylinder 5 and the guide shoe 6 can be fed into a well; when the tieback device falls to the top of the fish, continuing to drill, guiding the fish to enter the inner barrel of the tieback device, and continuing to press about 10 tons until the shear pin 3 is sheared after the fish is confirmed to be in place, so that releasing of the feeding nipple 1 is realized; the riser string is pulled up and the run-in nipple 1 is pulled out of the wellbore, while the remainder of the tieback remains in the well. The horn mouth that top connection 2 was equipped with can accurately go into upper portion instrument, and the slope of guide shoe 6 lower extreme can accurately introduce the underground fish, and the instrument of lower part introduction can be sat to the inside spacing shoulder 41 of connecting cylinder 4, and the inside diameter reduction portion of connecting cylinder 4 and tieback section of thick bamboo 5 can accurate direction instrument.
The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (6)
1. The utility model provides a tieback ware for workover salvage which characterized in that: comprises a feeding short joint (1), an upper joint (2), a connecting cylinder (4), a tieback cylinder (5) and a guide shoe (6) which are connected in sequence; the feeding nipple (1) is connected with the upper joint (2) through a shearing pin (3), and a horn mouth (21) is formed at the upper end of the upper joint (2); the lower end of the guide shoe (6) forms a spiral guide structure (61).
2. The tieback for workover fishing of claim 1, wherein: threaded connection is adopted between the upper joint (2) and the connecting cylinder (4), between the connecting cylinder (4) and the tieback cylinder (5) and between the tieback cylinder (5) and the guide shoe (6).
3. The tieback for workover fishing of claim 1, wherein: the inner wall of the upper end of the feeding nipple (1) forms threads, and an anti-rotation boss (12) and a shearing groove are arranged in the middle of the outer wall of the feeding nipple (1).
4. A tieback for well repair and fishing as defined in claim 3, further comprising: the inner wall of the upper joint (2) is provided with an anti-rotation key slot matched with the anti-rotation boss (12) and a threaded hole matched with the shearing pin (3) and the shearing groove.
5. The tieback for workover fishing of claim 1, wherein: the middle part of the connecting cylinder (4) is reduced in diameter and is in a horn shape; a limit shoulder (41) is formed at the lower part of the connecting cylinder (4).
6. The tieback for workover fishing of claim 1, wherein: the middle part of the tieback cylinder (5) is firstly reduced in diameter and then expanded in diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322004549.5U CN220522524U (en) | 2023-07-28 | 2023-07-28 | Tieback ware is used in workover salvage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322004549.5U CN220522524U (en) | 2023-07-28 | 2023-07-28 | Tieback ware is used in workover salvage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220522524U true CN220522524U (en) | 2024-02-23 |
Family
ID=89928576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322004549.5U Active CN220522524U (en) | 2023-07-28 | 2023-07-28 | Tieback ware is used in workover salvage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220522524U (en) |
-
2023
- 2023-07-28 CN CN202322004549.5U patent/CN220522524U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |