Large-range petroleum fishing socket
By designing a large-scale oil retrieval tube with a trumpet-shaped guide shoe and a fan-shaped guide plate, the problem of existing retrieval tubes being unable to handle debris of different sizes has been solved, enabling efficient retrieval and separation in inclined or horizontal wells, and reducing operational risks and costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-11
- Publication Date
- 2026-03-17
AI Technical Summary
Existing oil retrieval barrels have a small retrieval range during use, making it unable to handle debris of different sizes and resulting in low separation efficiency. They are particularly prone to missed retrieval and jamming when operating in inclined or horizontal wells, leading to longer operation cycles and increased costs.
A large-scale oil retrieval cylinder was designed, which uses a trumpet-shaped guide shoe and a fan-shaped guide plate with a spring device, along with a spiral slip and finger key to enhance the gripping stability. Through the linkage of the guide component and the filter rotating plate, it can achieve precise retrieval of fish of different sizes and filtration of impurities.
It improved the salvage range and separation efficiency, reduced the risk of missed retrieval and blockage, shortened the operation cycle, and reduced costs.
Smart Images
Figure CN224002685U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of oil retrieval tubes, specifically an oil retrieval tube for large-scale oil retrieval. Background Technology
[0002] The primary purpose of an oil retrieval tube is to retrieve drill collars, drill pipes, tubing, and other items that have fallen into the well during drilling and workover processes. Specifically, an oil retrieval tube is a tool specifically designed for retrieving these downhole tools and equipment, and it can be adapted to fit the outer diameter of drill collars, drill pipes, tubing, joints, couplings, and other well pipes.
[0003] During retrieval operations, fish that fall into the well experience wear and tear during the process, resulting in imprecise dimensions. Furthermore, the fish may deform after being handled underground, leading to uncertainties in the outer diameter and shape of the retrieval area. Consequently, existing conventional retrieval cylinders suffer from drawbacks such as limited retrieval range, inability to handle debris of varying sizes, and low separation efficiency. This is particularly problematic in inclined or horizontal wells, where risks of missed retrieval and jamming are common, extending operation cycles and increasing costs. Therefore, improvements to existing equipment are necessary to address these issues. Utility Model Content
[0004] The purpose of this utility model is to provide an oilfield large-area retrieval tube to solve the problems mentioned in the background art, such as the small retrieval range, inability to handle debris of different sizes, and low separation efficiency of existing conventional retrieval tubes during use. Especially when operating in deviated or horizontal wells, there is a risk of missed retrieval and jamming, which leads to extended operation cycles and increased costs.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an oil retrieval cylinder with a wide operating range, comprising a cylinder body,
[0006] The upper end of the cylinder is detachably connected to an upper connector, and the lower outer side of the cylinder is provided with a threaded sleeve. At the same time, the inner side of the lower end of the cylinder and the inner side of the threaded sleeve are respectively connected to the threaded connector provided at the upper end of the guide shoe and the threaded outer side of the upper end of the guide shoe. The guide shoe is flared, and guide plates are symmetrically provided on both sides inside the guide shoe. At the same time, the middle of the outer side of the guide plate is connected to the spring provided on the guide shoe. The lower end of the cylinder is provided with a spiral clamp, and the lower end of the spiral clamp is provided with a finger key. At the same time, the upper end of the spiral clamp is connected to the guide assembly through a connecting rod. The top of the guide assembly is connected to the filter assembly through a universal connector, and the filter assembly is located inside the slag discharge port opened on one side of the cylinder.
[0007] Preferably, the cylinder, upper connector, and guide shoe are all made of high-strength alloy steel.
[0008] Preferably, the upper connector is provided with a mounting flange at the top and a one-way valve at the bottom. The upper connector is provided with a retaining ring, a sealing gasket and a sealing sleeve in sequence from bottom to top above the one-way valve. The outer side of the sealing gasket is engaged with the inner side of the upper end of the cylinder. The sealing sleeve is located outside the sealing gasket and is detachably connected to the inner side of the upper end of the cylinder.
[0009] Preferably, the guide plate has a fan-shaped structure, and the guide plate is arranged parallel to the inner side of the shoe.
[0010] Preferably, the guide assembly includes a limiting cylinder, a guide slide plate, a guide post, and a buffer spring. The guide slide plate is slidably connected inside the limiting cylinder, and the middle of the lower end of the guide slide plate is connected to the top of the connecting rod. The guide post is provided at the middle of the upper end of the guide slide plate, and the top of the guide post passes through the middle of the buffer spring and the top of the limiting cylinder and extends to the top of the limiting cylinder. The buffer spring is made of high-quality spring steel.
[0011] Preferably, the filter assembly includes a filter rotating plate, the upper end of the filter rotating plate near the slag discharge port is rotatably connected to the inside of the cylinder, and a guide rail is provided at the lower end of the filter rotating plate. At the same time, the guide rail is slidably connected to one end of the universal connector. A limiting screen is provided above the other end of the filter rotating plate, and the limiting screen is inclined. At the same time, the limiting screen is connected to the side of the inside of the cylinder away from the slag discharge port.
[0012] Compared with existing technologies, the beneficial effects of this utility model are: this oil retrieval tube allows for large-scale oil recovery.
[0013] To address the shortcomings of existing conventional fishing cylinders, such as limited retrieval range, inability to handle debris of different sizes, and low separation efficiency, especially in inclined or horizontal wells where they are prone to missed catches and jamming, leading to extended operation cycles and increased costs, this application proposes a design that uses a trumpet-shaped guide shoe combined with a fan-shaped guide plate and a spring device to guide fish accurately into the retrieval process. This design is suitable for retrieving fish of different sizes. The spiral slips and finger keys further enhance the gripping stability and improve retrieval efficiency. The guide assembly is linked to a rotating filter plate, which, along with a limiting mesh plate, filters out impurities through the slag discharge port, improving the practicality of the application. Attached Figure Description
[0014] Figure 1 This is a front view structural diagram of the present invention;
[0015] Figure 2 This is a frontal cross-sectional view of the present invention.
[0016] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;
[0017] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B.
[0018] In the diagram: 1. Cylinder body; 101. Threaded sleeve; 102. Slag discharge port; 103. Limiting mesh plate; 2. Upper connector; 201. Mounting flange; 202. Check valve; 203. Retaining ring; 204. Sealing gasket; 205. Sealing sleeve; 3. Guide shoe; 301. Threaded connector; 302. Guide plate; 303. Spring; 4. Spiral slip; 5. Finger key; 6. Connecting rod; 7. Limiting cylinder; 8. Guide slide plate; 9. Guide column; 10. Buffer spring; 11. Universal connector; 12. Guide slide rail; 13. Filter rotating plate. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figure 1-4 This utility model provides a technical solution: an oil retrieval tube for large-scale oil recovery, based on... Figure 1 , Figure 2 and Figure 3 As shown, an upper connector 2 is detachably connected to the upper end of the cylinder 1. A mounting flange 201 is provided at the top of the upper end of the upper connector 2, and a one-way valve 202 is provided at the lower end of the upper connector 2. Above the one-way valve 202, a retaining ring 203, a sealing gasket 204, and a sealing sleeve 205 are arranged sequentially from bottom to top on the upper connector 2. The outer side of the sealing gasket 204 is engaged with the inner side of the upper end of the cylinder 1. The sealing sleeve 205 is located outside the sealing gasket 204, and the inner side of the sealing gasket 204 is detachably connected to the outer side of the upper end of the cylinder 1. The connection between the upper connector 2 and the cylinder 1 is stable and airtight, effectively preventing leakage. It also facilitates the disassembly and maintenance of the upper connector 2, improving its practicality. A threaded sleeve 101 is provided on the outer side of the lower end of the cylinder 1. The inner side of the lower end of the cylinder 1 and the inner side of the threaded sleeve 101 are respectively threaded to the threaded connector 301 provided on the upper end of the guide shoe 3 and the outer side of the upper end of the guide shoe 3. The cylinder 1, the upper connector 2 and the guide shoe 3 are all made of high-strength alloy steel, which improves the service life of the cylinder 1, the upper connector 2 and the guide shoe 3.
[0021] according to Figure 1 , Figure 2 and Figure 4As shown, the guide shoe 3 is funnel-shaped, and guide plates 302 are symmetrically arranged on both sides inside the guide shoe 3. The outer middle of the guide plate 302 is connected to a corresponding spring 303 on the guide shoe 3. The spring 303 is existing technology. The guide plate 302 has a fan-shaped structure and is parallel to the inner side of the guide shoe 3. The guide plate 302, spring 303, and guide shoe 3 work together to guide fish of different sizes into the cylinder 1. A spiral clamp 4 is provided at the lower end of the cylinder 1, and a finger-shaped key 5 is provided at the lower end of the spiral clamp 4. The spiral clamp 4 and finger-shaped key 5 facilitate... The system clamps and limits the movement of the fish. Simultaneously, the upper end of the spiral slip 4 is connected to the guide assembly via a connecting rod 6. The guide assembly includes a limiting cylinder 7, a guide slide plate 8, a guide post 9, and a buffer spring 10. The guide slide plate 8 is slidably connected inside the limiting cylinder 7, and its lower middle end is connected to the top of the connecting rod 6. The guide post 9 is located at the upper middle end of the guide slide plate 8, and its top passes through the buffer spring 10 and the top of the limiting cylinder 7, extending above the limiting cylinder 7. The buffer spring 10 is made of high-quality spring steel. Through the guide assembly, the impact during operation is reduced while stabilizing the spiral slip 4 and the finger key 5. To improve usability, the guide assembly is connected to the filter assembly at its top via a universal connector 11. The filter assembly is located inside the slag discharge port 102 on one side of the cylinder 1. The filter assembly includes a filter rotating plate 13. The upper end of the filter rotating plate 13 near the slag discharge port 102 is rotatably connected to the inside of the cylinder 1. A guide rail 12 is provided at the lower end of the filter rotating plate 13, and the guide rail 12 is slidably connected to one end of the universal connector 11. A limiting screen 103 is provided above the other end of the filter rotating plate 13. The limiting screen 103 is inclined and is located away from the slag discharge port 102 inside the cylinder 1. 2. One side is connected, and the fish enters the cylinder 1 under the action of suction and is connected and locked with the spiral clamp 4 and finger key 5. At the same time, the guide component moves upward synchronously, so that the universal connector 11 moves on the guide slide rail 12 set at the lower end of the filter rotating plate 13. Then, one end of the filter rotating plate 13 rotates and tilts until the other end is attached to the lower end of the limiting screen plate 103. Thus, with the combined use of the limiting screen plate 103 and the filter rotating plate 13, other particulate matter in the oil is filtered. Then, the particulate matter is discharged through the slag discharge port 102, and the oil liquid is discharged through the one-way valve 202 and the upper connector 2, improving the practicality of use.
[0022] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.
[0023] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A wide-range fishing barrel for oil, comprising a barrel body (1), characterized in that: the upper end of the barrel body (1) is detachably connected with an upper joint (2), and the lower end of the barrel body (1) is provided with a threaded sleeve (101) on the outside, and the lower end of the barrel body (1) and the inside of the threaded sleeve (101) are respectively connected with a threaded connector (301) provided on the upper end of a guide shoe (3) and the outside of the upper end of the guide shoe (3), the guide shoe (3) is in the shape of a trumpet mouth, and guide plates (302) are symmetrically provided on both sides of the inside of the guide shoe (3), and the middle of the outside of the guide plates (302) is connected with a spring device (303) provided on the upper end of the guide shoe (3) correspondingly, a spiral slip (4) is provided at the lower end of the inside of the barrel body (1), a finger-shaped key (5) is provided at the lower end of the spiral slip (4), and the upper end of the spiral slip (4) is connected with a guide assembly through a connecting rod (6), the top of the guide assembly is connected with a filtering assembly through a universal connecting piece (11), and the filtering assembly is located inside a slag discharge port (102) opened on one side of the barrel body (1).
2. The oil overshot of claim 1, wherein: The barrel body (1), the upper joint (2) and the guide shoe (3) are all made of high-strength alloy steel material.
3. The oil overshot of claim 1, wherein: A mounting flange (201) is provided at the top of the upper end of the upper joint (2), a one-way valve (202) is provided at the lower end of the upper joint (2), a retainer ring (203), a sealing gasket sleeve (204) and a sealing sleeve (205) are sequentially provided above the one-way valve (202) from bottom to top, the sealing gasket sleeve (204) is clamped and connected with the inside of the upper end of the barrel body (1), the sealing sleeve (205) is located outside the sealing gasket sleeve (204), and the inside of the sealing gasket sleeve (204) is detachably connected with the outside of the upper end of the barrel body (1).
4. The oil overshot of claim 1, wherein: The guide plates (302) are in the shape of a fan, and the guide plates (302) are parallel to the inside of the guide shoe (3).
5. The oil overshot of claim 1, wherein: The guide assembly comprises a limiting cylinder (7), a guide sliding plate (8), a guide column (9) and a buffer spring (10), the guide sliding plate (8) is slidably connected inside the limiting cylinder (7), the middle of the lower end of the guide sliding plate (8) is connected with the top of the connecting rod (6), a guide column (9) is provided at the middle of the upper end of the guide sliding plate (8), the top of the guide column (9) penetrates through the buffer spring (10) and the middle of the top of the limiting cylinder (7) and extends above the limiting cylinder (7), and the buffer spring (10) is made of high-quality spring steel material.
6. The oil overshot of claim 1, wherein: The filtering assembly comprises a filtering rotating plate (13), the filtering rotating plate (13) is rotatably connected with the inside of the barrel body (1) near one side of the upper end of the slag discharge port (102), a guide sliding rail (12) is provided at the lower end of the filtering rotating plate (13), the guide sliding rail (12) is slidably connected with one end of the universal connecting piece (11), a limiting mesh plate (103) is provided above the other end of the filtering rotating plate (13), the limiting mesh plate (103) is inclined, and the limiting mesh plate (103) is connected with the inside of the barrel body (1) away from one side of the slag discharge port (102).