CN219587534U - Tubing anchor for preventing advance setting during well entry - Google Patents

Abstract

The utility model discloses a tubing anchor for preventing a well from being sealed in advance, which comprises an upper joint, a lower joint and a central tube, wherein one end of the upper joint is provided with the lower joint, the central tube is arranged inside the upper joint and the lower joint, a slip is arranged inside the upper joint and close to the surface of a slip support, the slip support is connected with the upper joint through a connecting sleeve, one end of the slip support, which is far away from the connecting sleeve, is movably connected with a steel ball positioned between a ball blocking sleeve and a lock ball sleeve through a large spring, a friction block enters the lower end of a long track outside the central tube when a tubular column is lifted, moves upwards along the long track when the tubular column is lifted, reaches the upper end of the long track, pushes a lock ball seat and the slip support to support the slip, realizes the sealing, lifts the tubular column when the tubular column is unsealed, moves downwards into a short track, the lock ball seat and the slip support move downwards, realizes the releasing of the slip, has simple operation, compact structure, can prevent the well from being sealed in advance, and has more reliable sealing and recycling performances.

Description

Tubing anchor for preventing advance setting during well entry

Technical Field

The utility model relates to the technical field of oil well exploitation components, in particular to a tubing anchor for preventing a well from being sealed before entering a well.

Background

The tubing anchor is a downhole device for anchoring a downhole tubing string in production and measure wells, can improve the stress state of the tubing string, reduce fatigue damage of the tubing string, control the expansion and contraction of the tubing string, reduce leakage, prolong the service life of the tubing string, fix the tubing string in the oil pumping production process of a sucker rod pump, reduce stroke loss, improve pump efficiency, fix the tubing string in the processes of fracturing, acidizing and the like, improve the bearing capacity of downhole tools and the tubing string, and also can be used as a mechanism, be designed on other downhole tools such as a packer, play the role of the downhole tools, and be one of important components in the oil exploitation process.

The existing tubing anchor has the following defects in the actual use process: the existing mechanical tubing anchor is clamped by the friction force between the friction block and the casing wall, in the actual operation process, the tubing anchor is easy to advance in the middle of the well, so that the tubing anchor needs to be recycled and adjusted and then goes into the well again, meanwhile, due to the structural characteristics, the sealing performance and the recycling performance of the tubing anchor are not reliable enough, and a certain leakage rate and recycling difficulty exist in the actual operation process.

Disclosure of Invention

The utility model mainly aims to provide the tubing anchor for preventing the advanced setting in the well entering process, which can realize rapid and tight setting through the mutual matching of all components, and simultaneously, the recovery and unclamping process is more convenient and smoother, and the problems in the background technology can be effectively solved.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a prevent oil pipe anchor of well logging process front setting, including the upper joint, still include lower clutch and center tube, the lower clutch is installed to upper joint one end and upper joint and the inside center tube that is provided with of lower clutch, the upper joint is inside to be close to slips and holds in the palm surface one side and installs slips and hold in the palm and be connected through the adapter sleeve between and the upper joint, slips hold in the palm and keep away from adapter sleeve one end and have the steel ball that is located between fender ball cover and the lock ball cover through big spring swing joint, the inside little spring that is provided with of friction block and friction block tip are connected with the steel ball through the release cover, the friction block periphery is close to lower joint one end and is connected with the swivel through clamping ring and track pin and swivel periphery has cup jointed the swivel and pressed the cap.

Further, a sealing ring for sealing the joint is sleeved between the inner wall of the upper joint and the central tube; the joint positioned on the inner wall of the upper joint can play a good sealing role at the joint between the upper joint and the central tube.

Further, one end of the slip support is provided with a sheath positioned at the periphery of the large spring and the steel ball; the sheath can realize the functions of installation, positioning and protection for all components in the sheath.

Further, a righting body is arranged between the inside of the friction block and the central tube, and one end, far away from the friction block, of the small spring is abutted to the surface of the righting body; the righting body is arranged between the friction block and the central tube, so that the small spring is convenient to install and position and the position of the friction block is ensured to be accurate.

Compared with the prior art, the utility model has the following beneficial effects: when the device is used, the whole device is stably and uniformly fed into the installation position, the position of the liquid level in the well is judged in advance, the device is slowly lowered at a uniform speed when being contacted with the liquid level, in the lowering process, if the device is blocked, the lowering should be stopped immediately, the pipe column is moved through the slowly lifting and lowering actions, and the attention is paid that the resistance cannot exceed 3 tons. The lifting can not exceed 1m, the tubing anchor is prevented from being lifted to lead to the oil tubing anchor to be set forward, if the tubing anchor is tried to be lifted for several times, the tubing anchor is taken out, the reason is analyzed, the tubing anchor is drilled down to the front of the last drill rod, the setting position of the tubing anchor is measured and marked, the tubing anchor is continuously lowered to a distance of more than 1m from the marking position after the position is determined, the friction block enters the lower end of a long track outside the central tube when the tubing is lifted, the friction block moves upwards along the long track when the tubing is lowered, reaches the upper end of the long track, the locking ball seat and the slip support are pushed to prop out the slip, the setting is realized, the tubing anchor is lifted when the tubing is unsealed, the friction block moves downwards to enter the short track, the locking ball seat and the slip support move downwards, the slip is retracted, the unlocking is realized, the operation is simple, the structure is compact, the system is reliable, the sealing and the recovery performance of the tubing anchor is prevented from being lifted in the middle of the well.

Drawings

FIG. 1 is a schematic illustration of the overall structure of a tubing anchor for preventing the premature setting during a well entry process of the present utility model.

In the figure: 1. an upper joint; 2. a seal ring; 3. a slip; 4. connecting sleeves; 5. a slip support; 6. a large spring; 7. ball locking sleeve; 8. a ball blocking sleeve; 9. a steel ball; 10. a sheath; 11. releasing the sleeve; 12. a friction block; 13. a small spring; 14. strengthening body; 15. a compression ring; 16. a rail pin; 17. a swivel; 18. rotating ring cap pressing; 19. a central tube; 20. and a lower joint.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1, a tubing anchor for preventing a well from being set in advance in a well logging process comprises an upper joint 1, a lower joint 20 and a central tube 19, wherein the lower joint 20 is installed at one end of the upper joint 1, the central tube 19 is arranged inside the upper joint 1 and the lower joint 20, a slip 3 is installed on one side, close to the surface of a slip support 5, inside the upper joint 1, and is connected with the upper joint 1 through a connecting sleeve 4, one end, far away from the connecting sleeve 4, of the slip support 5 is movably connected with a steel ball 9 positioned between a ball blocking sleeve 8 and a ball locking sleeve 7 through a big spring 6, a small spring 13 is arranged inside a friction block 12, the end part of the friction block 12 is connected with the steel ball 9 through a release sleeve 11, one end, close to the lower joint 20, of the periphery of the friction block 12 is connected with a swivel 17 through a compression ring 15 and a track pin 16, and the periphery of the swivel 17 is sleeved with a swivel cap 18.

The sealing ring 2 for sealing the joint is sleeved between the inner wall of the upper joint 1 and the central pipe 19, a sheath 10 positioned at the peripheries of the large spring 6 and the steel ball 9 is arranged at one end of the slip support 5, a righting body 14 is arranged between the inside of the friction block 12 and the central pipe 19, and one end, far away from the friction block 12, of the small spring 13 is abutted to the surface of the righting body 14; the junction that is located the top connection 1 inner wall can play fine sealed effect in the junction between top connection 1 and the center tube 19, and sheath 10 can realize installation location and protection's effect to its inside each subassembly, and the body 14 that right sets up between friction disc 12 and center tube 19, and convenient installation location little spring 13 ensures that friction disc 12 position is accurate.

During the use, the assembly and check operation are carried out on each component before the use, the sealing ring 2 is loaded in the upper joint 1, the release sleeve 11, the centralizing body 14, the compression ring 15, the friction block 12 and the small spring 13 are integrally assembled together through a tool, the connection position of the upper joint 1 and the central pipe 19 is locked and fixed, the ball locking sleeve 7, the large spring 6, the ball blocking sleeve 8 and the slip support 5 are sequentially tightened, the locking pin is installed, the steel ball 9 is simultaneously installed in the ball locking sleeve 7, the jacket 10 is installed outside the ball locking sleeve, the slip support 5 is tightened and is provided with the locking pin, the assembled centralizing body 14 is installed from the lower end of the central pipe 19, the rotating ring 17, the rotating ring pressing cap 18 and the compression ring 15 are sequentially connected, the locking pin is installed after the rotating ring 17 is installed, the lower joint 20 and the central pipe 19 are tightly connected with the threaded oil, the assembly operation can be completed, the whole device is stably sent into the installation position in advance when the device is used, the device is slowly stopped from contacting the lower end of the pipe 3 when the device is in the installation position, and the pipe is not contacted with the pipe column at a uniform speed, and the pipe column is slowly moved in the process if the device is not contacted with the pipe column at a uniform speed. The lifting can not exceed 1m, the oil pipe anchor is prevented from being lifted to lead to the oil pipe anchor to be sealed in advance, if the pipe column is tried to be lifted for several times, the pipe column is taken out, the reason is analyzed, the oil pipe anchor is drilled down to the front correction depth of the last drill pipe column, the oil pipe anchor sealing position is measured and marked, the distance of the marked position is more than 1m after the oil pipe anchor sealing position is determined, the friction block 12 enters the lower end of a long track outside the central pipe 19 when the pipe column is lifted, the friction block 12 moves upwards along the long track when the pipe column is lifted, reaches the upper end of the long track, the lock ball seat and the slip support 5 are pushed to prop up the slip 3, the pipe column is lifted when the pipe column is lifted, the friction block 12 moves downwards to enter the short track, the lock ball seat and the slip support 5 move downwards, the slip 3 is retracted, the unlocking is realized, the operation is simple, the structure is compact, the system is reliable, the sealing and the front sealing in the middle of the well is prevented, and the recoverable performance is more reliable.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (4)

1. The utility model provides a prevent oil pipe anchor of well logging process advanced setting, including upper joint (1), a serial communication port, still include lower clutch (20) and center tube (19), upper joint (1) one end is installed lower clutch (20) and upper joint (1) and is provided with center tube (19) with lower clutch (20) inside, upper joint (1) inside is close to slip support (5) surface one side and installs slips (3) and slip support (5) and upper joint (1) between be connected through adapter sleeve (4), slip support (5) keep away from adapter sleeve (4) one end and be connected with steel ball (9) between ball blocking sleeve (8) and lock ball sleeve (7) through big spring (6) swing joint, friction disc (12) inside is provided with little spring (13) and friction disc (12) tip is connected with steel ball (9) through release sleeve (11), friction disc (12) periphery is close to lower clutch (20) one end and is connected with swivel (17) through clamping ring (15) and track pin (16) and swivel cap (17) periphery cup joint swivel cap (18).

2. A tubing anchor for preventing a setting ahead during a well as claimed in claim 1, wherein: a sealing ring (2) for sealing the joint is sleeved between the inner wall of the upper joint (1) and the central tube (19).

3. A tubing anchor for preventing a setting ahead during a well as claimed in claim 1, wherein: one end of the slip support (5) is provided with a sheath (10) positioned at the peripheries of the large spring (6) and the steel ball (9).

4. A tubing anchor for preventing a setting ahead during a well as claimed in claim 1, wherein: a centralizing body (14) is arranged between the inside of the friction block (12) and the central tube (19), and one end, far away from the friction block (12), of the small spring (13) is abutted to the surface of the centralizing body (14).