Reusable tubing anchor positioner

Abstract

The utility model belongs to the technical field of tubing anchor positioning, and particularly relates to a reusable tubing anchor positioner which comprises a central pipe, a limiting device is arranged outside the central pipe, and the limiting device comprises an adjusting ring, a spring sleeve, a limiting spring, a fixed ring and a sliding ring. According to the reusable tubing anchor positioner, a pressure transmitting hole is formed in the central tube, when the internal pressure exceeds the starting pressure of an anchor, the lower cone starts to move upwards, the slip is supported on the inner wall of a sleeve, meanwhile, a tubular column is lowered for loading to achieve long-term tubular column anchoring, the slip can still achieve anchoring after tubing pressure relief, and when the anchor needs to be released, the lower cone starts to move upwards, and the slip is supported on the inner wall of the sleeve. During adjustment, the adjusting ring is rotated, the limiting clamping ring is made to rotate in the sliding ring, the adjusting ring moves along the surface of the threaded barrel, the sliding ring is driven to move and extrude the limiting spring, the sliding ring drives the fixing ring to extrude the spring sleeve, and the external pressure of the central pipe is conveniently adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of tubing anchor positioning, in particular to a reusable tubing anchor positioner. Background Art

[0002] For example, although a hydraulic anchor (application number: 201821692960.9) disclosed on the Chinese Patent Network is provided with a releasing spring to ensure more convenient release of the anchor, the joint is directly fixed, which is not convenient for disassembly. As a result, it cannot be reused, consuming more resources. Secondly, the pressure outside the central tube cannot be adjusted, so the anchor may be damaged due to the change of the pressure inside the central tube during use. Content of the Utility Model

[0003] Based on the technical problems that the existing anchor consumes resources and is easily damaged, the utility model provides a reusable tubing anchor positioner.

[0004] A reusable tubing anchor positioner provided by the utility model includes a central tube. A limiting device is arranged outside the central tube. The limiting device includes an adjusting ring, a spring sleeve, a limiting spring, a fixing ring and a sliding ring. When the adjusting ring rotates, it moves horizontally outside the central tube. The adjusting ring squeezes the sliding ring to make the sliding ring and the fixing ring move horizontally. The fixing ring squeezes the spring sleeve, and the sliding ring squeezes the limiting spring.

[0005] Preferably, the sliding ring is slidably connected to the outer surface of the central tube. The sliding ring is located on the right half outside the central tube. A fixing sleeve is fixedly installed on the left half of the outer surface of the central tube. The limiting spring is fixedly installed between the fixing sleeve and the sliding ring.

[0006] Through the above technical solution, the sliding ring is stuck on the outside of the central tube and moves. The limiting spring is deformed under the extrusion of the fixing sleeve and the sliding ring.

[0007] Preferably, the fixing ring is fixedly installed on the outer surface of the sliding ring. An installation ring is fixedly installed on the outer surface of the fixing sleeve. The spring sleeve is fixedly installed between the installation ring and the fixing ring. The spring sleeve is placed outside the limiting spring.

[0008] Through the above technical solution, when the sliding ring moves, it drives the fixing ring to move, so that the fixing ring squeezes the spring sleeve between the installation ring and the fixing ring.

[0009] Preferably, an upper joint is slidably connected to the left end of the central tube, and a lower joint is slidably connected to the right end of the central tube. Limit screws are threadedly connected inside both the upper joint and the lower joint. The limit screws pass through the inside of the upper joint and the lower joint and are threadedly connected to the inside of the central tube.

[0010] Through the above technical solution, the limit screw passes through the upper joint and the lower joint and is threadedly connected to the central tube, stably installing the upper joint and the lower joint outside the central tube.

[0011] Preferably, a plurality of the limit screws are annularly arrayed with the axis of the central tube as the array center. A threaded cylinder is fixedly installed on the left side surface of the lower joint, and the inner surface of the adjusting ring is threadedly connected to the outer surface of the threaded cylinder.

[0012] Through the above technical solution, when the adjusting ring rotates outside the threaded cylinder, the adjusting ring will move horizontally along the outside of the threaded cylinder.

[0013] Preferably, a slip is fixedly installed on the right side surface of the upper joint, a limit cylinder is fixedly installed on the left side surface of the fixed sleeve, the left side surface of the limit cylinder is fixedly connected to the right side of the slip, a limit snap ring is fixedly installed on the left side surface of the adjusting ring, and the outer surface of the limit snap ring is rotatably connected to the inside of the sliding ring.

[0014] Through the above technical solution, the limit snap ring rotates within the sliding ring, enabling the adjusting ring to drive the sliding ring to move without disengaging from the surface of the sliding ring.

[0015] The beneficial effects in the present utility model are as follows:

[0016] By providing a limiting device, there is a pressure transmission hole in the central tube. When the internal pressure exceeds the starting pressure of the anchor, the lower cone starts to move upward, and the slips support on the inner wall of the casing. At the same time, the string is lowered and loaded to achieve long-term string anchoring. The slips can still achieve anchoring after the tubing pressure is relieved. When it is necessary to release the anchor, only the string needs to be lifted. When performing repeated operations, only repeat the pressure application, then lower the string, and then lift the string to achieve repeated operations. When adjusting, rotate the adjusting ring to make the limit snap ring rotate within the sliding ring, and the adjusting ring moves along the surface of the threaded cylinder, driving the sliding ring to move, squeezing the limit spring. The sliding ring drives the fixed ring to squeeze the spring sleeve, facilitating the adjustment of the external pressure of the central tube, preventing damage to the anchor itself, and at the same time disassembling and assembling the two joints through the limit screws, saving certain resources, achieving the effect of avoiding damage to the anchor and saving resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a reusable tubing anchor positioning device proposed by the present utility model;

[0018] Figure 2 It is a three-dimensional view of the central tube structure of a reusable tubing anchor positioning device proposed by the present utility model;

[0019] Figure 3A cross-sectional view of the sliding ring structure of a reusable tubing anchor locator proposed by the present utility model.

[0020] In the figure: 1. Central tube; 11. Fixed sleeve; 12. Installation ring; 13. Upper joint; 14. Lower joint; 15. Limit screw; 16. Threaded barrel; 17. Slip; 18. Limit cylinder; 2. Adjusting ring; 21. Limit snap ring; 3. Spring sleeve; 4. Limit spring; 5. Fixed ring; 6. Sliding ring. Specific implementation mode

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0022] Refer to Figures 1 - 3 , a reusable tubing anchor locator, including a central tube 1. In order to facilitate the adjustment of the external structure of the central tube 1, a limiting device is provided outside the central tube 1. The limiting device includes an adjusting ring 2, a spring sleeve 3, a limiting spring 4, a fixed ring 5 and a sliding ring 6. When the adjusting ring 2 rotates, it will move horizontally outside the central tube 1. The adjusting ring 2 squeezes the sliding ring 6 to make the sliding ring 6 and the fixed ring 5 move horizontally. The fixed ring 5 squeezes the spring sleeve 3, and the sliding ring 6 squeezes the limiting spring 4.

[0023] In order to ensure that the limiting spring 4 is deformed by the extrusion of the fixed sleeve 11 and the sliding ring 6, the sliding ring 6 is slidably connected to the outer surface of the central tube 1. The sliding ring 6 is located on the right half of the outside of the central tube 1. The left half of the outer surface of the central tube 1 is fixedly installed with a fixed sleeve 11. The limiting spring 4 is fixedly installed between the fixed sleeve 11 and the sliding ring 6. The sliding ring 6 is stuck on the outside of the central tube 1 for movement, and the limiting spring 4 is deformed by the extrusion of the fixed sleeve 11 and the sliding ring 6.

[0024] In order to ensure that the spring sleeve 3 is extruded between the installation ring 12 and the fixed ring 5, the fixed ring 5 is fixedly installed on the outer surface of the sliding ring 6. The outer surface of the fixed sleeve 11 is fixedly installed with an installation ring 12. The spring sleeve 3 is fixedly installed between the installation ring 12 and the fixed ring 5. The spring sleeve 3 is placed outside the limiting spring 4. When the sliding ring 6 moves, it drives the fixed ring 5 to move, so that the fixed ring 5 squeezes the spring sleeve 3 between the installation ring 12 and the fixed ring 5.

[0025] To facilitate the stable installation of the upper joint 13 and the lower joint 14 outside the central tube 1, the upper joint 13 is slidably connected to the left end of the central tube 1, and the lower joint 14 is slidably connected to the right end of the central tube 1. Limit screws 15 are threadedly connected inside both the upper joint 13 and the lower joint 14. The limit screws 15 pass through the interiors of the upper joint 13 and the lower joint 14 and are threadedly connected to the interior of the central tube 1. The limit screws 15 pass through the upper joint 13 and the lower joint 14 and are threadedly connected to the central tube 1, stably installing the upper joint 13 and the lower joint 14 outside the central tube 1.

[0026] To ensure that the adjusting ring 2 moves horizontally along the outside of the threaded barrel 16, several limit screws 15 are annularly arrayed with the axis of the central tube 1 as the array center. A threaded barrel 16 is fixedly installed on the left side surface of the lower joint 14. The inner surface of the adjusting ring 2 is threadedly connected to the outer surface of the threaded barrel 16. When the adjusting ring 2 rotates outside the threaded barrel 16, the adjusting ring 2 will move horizontally along the outside of the threaded barrel 16.

[0027] To ensure that the adjusting ring 2 drives the sliding ring 6 to move without detaching from the surface of the sliding ring 6, a slip-on 17 is fixedly installed on the right side surface of the upper joint 13. A limit cylinder 18 is fixedly installed on the left side surface of the fixed sleeve 11. The left side surface of the limit cylinder 18 is fixedly connected to the right side of the slip-on 17. A limit snap ring 21 is fixedly installed on the left side surface of the adjusting ring 2. The outer surface of the limit snap ring 21 is rotatably connected to the interior of the sliding ring 6. The limit snap ring 21 is stuck inside the sliding ring 6 and rotates, allowing the adjusting ring 2 to drive the sliding ring 6 to move without detaching from the surface of the sliding ring 6.

[0028] By setting up the limiting device, there is a pressure transmission hole in the central tube 1. When the internal pressure exceeds the starting pressure of the anchor, the lower cone starts to move upward, and the slip-on 17 supports on the inner wall of the casing. At the same time, the pipe string is lowered and loaded to achieve long-term pipe string anchoring. The slip-on 17 can still achieve anchoring after the tubing pressure is relieved. When it is necessary to release the anchor, only the pipe string needs to be lifted. When performing repeated operations, only repeat the pressure application, then lower the pipe string, and then lift the pipe string to achieve repeated operations. When adjusting, rotate the adjusting ring 2 to make the limit snap ring 21 rotate inside the sliding ring 6. The adjusting ring 2 moves along the surface of the threaded barrel 16, drives the sliding ring 6 to move, squeezes the limit spring 4. The sliding ring 6 drives the fixed ring 5 to squeeze the spring sleeve 3, facilitating the adjustment of the pressure outside the central tube 1, preventing damage to the anchor itself, and at the same time disassembling and assembling the two joints through the limit screws 15, saving certain resources, achieving the effect of avoiding damage to the anchor and saving resources.

[0029] Working principle: There is a pressure transmission hole in the central tube 1. When the internal pressure exceeds the starting pressure of the anchor, the lower cone starts to move upward, and the slips 17 are supported on the inner wall of the casing. At the same time, the string is lowered and loaded to achieve long-term string anchoring. The slips 17 can still achieve anchoring after the tubing is depressurized. When it is necessary to release the anchor, only the string needs to be lifted. When performing repeated operations, only need to repeat the pressure application, then lower the string, and then lift the string to achieve repeated operations. When adjusting, rotate the adjusting ring 2 to make the limit retaining ring 21 rotate within the sliding ring 6. The adjusting ring 2 moves along the surface of the threaded cylinder 16, driving the sliding ring 6 to move, squeezing the limit spring 4. The sliding ring 6 drives the fixed ring 5 to squeeze the spring sleeve 3, facilitating the adjustment of the external pressure of the central tube 1 to prevent damage to the anchor itself. At the same time, the two joints are disassembled and assembled through the limit screws 15, saving certain resources.

[0030] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, making equivalent replacements or changes should be covered within the protection scope of the present utility model.

Claims

1. A reusable tubing anchor locator, comprising a central tube (1), characterized in that: A limiting device is arranged outside the central tube (1). The limiting device includes an adjusting ring (2), a spring sleeve (3), a limiting spring (4), a fixing ring (5) and a sliding ring (6). When the adjusting ring (2) rotates, it will move horizontally outside the central tube (1). The adjusting ring (2) squeezes the sliding ring (6) to make the sliding ring (6) and the fixing ring (5) move horizontally. The fixing ring (5) squeezes the spring sleeve (3), and the sliding ring (6) squeezes the limiting spring (4).

2. The reusable tubing anchor locator according to claim 1, characterized in that: The sliding ring (6) is slidably connected to the outer surface of the central tube (1). The sliding ring (6) is located in the right half outside the central tube (1). A fixing sleeve (11) is fixedly installed on the left half of the outer surface of the central tube (1). The limiting spring (4) is fixedly installed between the fixing sleeve (11) and the sliding ring (6).

3. The reusable tubing anchor locator according to claim 2, characterized in that: The fixing ring (5) is fixedly installed on the outer surface of the sliding ring (6). An installation ring (12) is fixedly installed on the outer surface of the fixing sleeve (11). The spring sleeve (3) is fixedly installed between the installation ring (12) and the fixing ring (5). The spring sleeve (3) is placed outside the limiting spring (4).

4. A reusable tubing anchor locator according to claim 2, characterized in that: An upper joint (13) is slidably connected to the left end of the central tube (1), and a lower joint (14) is slidably connected to the right end of the central tube (1). Limiting screws (15) are threadedly connected to the interiors of the upper joint (13) and the lower joint (14). The limiting screws (15) pass through the interiors of the upper joint (13) and the lower joint (14) and are threadedly connected to the interior of the central tube (1).

5. A reusable tubing anchor locator according to claim 4, characterized in that: A plurality of the limiting screws (15) are annularly arrayed with the axis of the central tube (1) as the array center. A threaded cylinder (16) is fixedly installed on the left side surface of the lower joint (14). The inner surface of the adjusting ring (2) is threadedly connected to the outer surface of the threaded cylinder (16).

6. The reusable tubing anchor locator according to claim 4, characterized in that: A slip joint (17) is fixedly installed on the right side surface of the upper joint (13). A limiting cylinder (18) is fixedly installed on the left side surface of the fixing sleeve (11). The left side surface of the limiting cylinder (18) is fixedly connected to the right side of the slip joint (17). A limiting snap ring (21) is fixedly installed on the left side surface of the adjusting ring (2). The outer surface of the limiting snap ring (21) is rotatably connected to the interior of the sliding ring (6).

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