Vibration impact tool for well repair

Abstract

The utility model relates to the technical field of underground well repair tools, and discloses a vibration impact tool for well repair, which comprises a shell, the outer wall of the shell is fixedly connected with a fixed plate, the outer wall of the fixed plate is rotatably connected with a plurality of upper rotating rods, the other ends of the upper rotating rods are rotatably connected with sliding blocks, and the sliding blocks are connected with the fixed plate. The outer wall of the sliding block is rotationally connected with a plurality of lower rotating rods, one end of each lower rotating rod is rotationally connected with the other fixing plate, the outer wall of the sliding block is fixedly connected with a first damper, the outer wall of the sliding block is slidably connected with a mounting plate, the inner wall of the shell is provided with a dismounting assembly used for dismounting, and the dismounting assembly comprises a mounting block. According to the utility model, the damping structure is additionally arranged between the jar and the shell, so that the jar and the shell can be buffered during impact, and hydraulic impact is reduced, so that the shell is protected, and the impact on the components in the shell is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to downhole workover tool technical field especially relates to a vibration impact tool for workover. BACKGROUND

[0002] The vibration impact tool for workover aims at efficiently solving downhole faults and improving workover operation efficiency. Through generating vibration and impact force, it can quickly break downhole rocks and remove blockages, significantly shortening the workover cycle; when dealing with complex problems such as stuck pipe and fishing, it can accurately apply force and reduce damage to the well wall and downhole equipment. The tool not only ensures the normal operation of oil wells, but also reduces operation costs, which is of great significance to maintaining the continuity of oil and gas field production and improving energy exploitation benefits.

[0003] The vibration impact tool for workover mainly generates high-frequency vibration and impact force by hydraulic or mechanical principles. Through hydraulic drive, the piston reciprocates in the cylinder to generate vibration impact energy, or through the rapid reciprocating motion of mechanical devices. It is commonly used to deal with downhole stuck pipe, fishing, breaking hard blockages and other scenes, which can effectively destroy the stability of downhole obstacles and help successfully complete workover operations, improve operation efficiency and success rate.

[0004] In the prior art, part of the vibration impact tool for workover has a large hydraulic impact between the percussion mandrel and the percussion shell when in use, which affects the service life of the sealing element and the stability of the percussion device, so that the hydraulic impact causes the size and frequency of the percussion force to fluctuate, the percussion device cannot provide stable and accurate percussion energy, and the workover operation effect is affected. Therefore, a vibration impact tool for workover is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a vibration impact tool for workover, which aims to improve the problem that the large hydraulic impact between the percussion mandrel and the percussion shell in the prior art affects the service life of the sealing element and the stability of the percussion device, so that the hydraulic impact causes the size and frequency of the percussion force to fluctuate, the percussion device cannot provide stable and accurate percussion energy, and the workover operation effect is affected.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A vibratory impact tool for well repair includes a housing. A fixing plate is fixedly connected to the outer wall of the housing. A plurality of upper rotating rods are rotatably connected to the outer wall of the fixing plate. A slider is rotatably connected to the other end of each of the upper rotating rods. A plurality of lower rotating rods are rotatably connected to the outer wall of the slider. Another fixing plate is rotatably connected to one end of each lower rotating rod. A damper is fixedly connected to the outer wall of the slider. A mounting plate is slidably connected to the outer wall of the slider. A disassembly assembly for disassembly is installed on the inner wall of the housing.

[0008] As a further description of the above technical solution:

[0009] The disassembly assembly includes a mounting block, the outer wall of which is fixedly connected to the inner wall of the housing, a drill rod is detachably connected to the outer wall of the housing, and sliding plates are fixedly connected to both sides of the mounting block;

[0010] As a further description of the above technical solution:

[0011] The inner wall of the outer casing is slidably connected to a mandrel, the outer wall of the mounting block is slidably connected to the inner wall of the drill rod, and the outer sides of the two sliding plates are fixedly connected to the inner wall of the drill rod.

[0012] As a further description of the above technical solution:

[0013] The inner wall of the drill rod is threaded with a mounting bolt, and the outer wall of the mounting bolt is threaded with the inner wall of the mounting block.

[0014] As a further description of the above technical solution:

[0015] A sliding block is fixedly connected to the outer wall of the fixed plate, and a damper is fixedly connected to the outer wall of the sliding block.

[0016] As a further description of the above technical solution:

[0017] The other end of the second damper is fixedly connected to another sliding block, and the outer wall of the other sliding block is fixedly connected to the outer wall of the other fixed plate.

[0018] As a further description of the above technical solution:

[0019] The other end of the damper is fixedly connected to the inner wall, and the outer wall of the sliding block is slidably connected to the inner wall;

[0020] As a further description of the above technical solution:

[0021] A fixed plate is fixedly connected to the outer wall of the mandrel, and a vibrator is fixedly connected to the outer wall of the fixed plate. The outer wall of another fixed plate is fixedly connected to the outer wall of the fixed plate.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the fixed plate transmits force to the sliding block. The sliding block slides on the inner wall of the mounting plate, transmitting force to the second damper. The second damper generates damping force through its internal structure, dissipating vibration energy into heat energy and other forms of energy, thereby reducing the vibration amplitude and playing a vibration reduction role. At the same time, the upper and lower rotating rods rotate when the sliding block slides, causing the slider to collide with the first damper, which further absorbs the vibration. This achieves two-stage vibration reduction, resulting in a better vibration reduction effect and protecting the outer shell and internal components.

[0024] 2. In this utility model, the mounting block on the outer wall of the outer shell is inserted into the inner wall of the drill rod. The inner wall of the drill rod has a sliding groove. The sliding plates on both sides of the mounting block will slide inside the sliding groove, thereby ensuring the accuracy of the installation. When the mounting block drives the sliding plate to slide to the designated position, the drill rod and the mounting block are fixedly connected together by the mounting bolts, thereby realizing the installation between the drill rod and the outer shell. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a vibration impact tool for well repair proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the vibratory impact device of a well repair vibration impact tool proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the fixing disc of a well-workover vibration impact tool proposed in this utility model;

[0028] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 5 for Figure 3 Enlarged view of point B in the middle.

[0030] Legend:

[0031] 1. Outer shell; 2. Sliding block; 3. Fixing plate; 4. Slider; 5. Damper I; 6. Mounting plate; 7. Upper rotating rod; 8. Lower rotating rod; 9. Damper II; 10. Mounting block; 11. Sliding plate; 12. Mandrel; 13. Mounting bolt; 14. Fixing plate; 15. Drill rod; 16. Vibrator. Detailed Implementation

[0032] 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.

[0033] Reference Figure 1 , Figure 2 and Figure 4 This utility model provides an embodiment of a well-workover vibration impact tool, including a housing 1. A fixed plate 3 is fixedly connected to the outer wall of the housing 1. When the drill pipe 15 controls the shock absorber 16 to generate vibration in the well, the strong vibration acts inside the housing 1. If a shock-absorbing component is not added, the service life of the housing 1 will decrease sharply. The fixed plate 3 can receive the force of the vibration from the shock absorber 16, thereby playing the role of transmitting force. Multiple upper rotating rods 7 are rotatably connected to the outer wall of the fixed plate 3. When the fixed plate 3 receives the vibration force and transmits it to the sliding block 2, the sliding block 2 will cause the upper rotating rods 7 to rotate during the sliding process. The rotation of the upper rotating rods 7 can drive the slider 4 to move, thereby further transmitting the force.

[0034] The other ends of multiple upper rotating rods 7 are rotatably connected to sliders 4. The rotation of the upper rotating rods 7 will drive the sliders 4 to move. The sliders 4 further transmit the force through the rotational connection with the lower rotating rods 8. At the same time, the sliders 4 are also connected to the damper 5, which can transfer some of the vibration energy to the damper 5 for absorption. Multiple lower rotating rods 8 are rotatably connected to the outer wall of the sliders 4. When the sliders 4 move, the lower rotating rods 8 will rotate. The rotation of the lower rotating rods 8 can transmit the force to another fixed plate 3. At the same time, the rotation of the lower rotating rods 8 can also cause the sliders 4 to collide with the damper 5, allowing the damper 5 to further absorb the vibration. One end of the lower rotating rods 8 is rotatably connected to another fixed plate 3. The rotation of the lower rotating rods 8 transmits the force to the other fixed plate 3, so that the force is further dispersed and transmitted in the entire structure.

[0035] A damper 5 is fixedly connected to the outer wall of slider 4. During its movement, slider 4 impacts damper 5. Damper 5 generates damping force through its internal structure, dissipating the received vibration energy into heat or other forms of energy, thereby reducing the vibration amplitude and achieving vibration reduction. A disassembly assembly for disassembly is installed on the inner wall of the outer shell 1. The disassembly assembly facilitates the disassembly and installation between the outer shell 1 and components such as drill rod 15, making tool maintenance and repair easier. A sliding block 2 is fixedly connected to the outer wall of fixed plate 3. When the vibrator 16 impacts, the vibration force is transmitted to fixed plate 3 and then to sliding block 2. Sliding block 2 transmits the force to damper 9 by sliding within a certain inner wall. Damper 9 is fixedly connected to the outer wall of sliding block 2. Damper 9 generates damping force through its internal structure, dissipating the vibration energy into heat or other forms of energy, thereby reducing the vibration amplitude and achieving vibration reduction.

[0036] Another sliding block 2 is fixedly connected to the other end of damper 2 9. After damper 2 9 dissipates the absorbed vibration energy, the remaining force is transmitted through the other sliding block 2. The other sliding block 2 can further transmit the force. The outer wall of the other sliding block 2 is fixedly connected to the outer wall of another fixed plate 3. The other sliding block 2 transmits the force to the other fixed plate 3, so that the force continues to be transmitted in the structure and further disperses the vibration energy. The other end of damper 1 5 is fixedly connected to the inner wall of mounting plate 6. After damper 1 5 dissipates the absorbed vibration energy by converting it into other forms of energy, it can stabilize its position by being fixed on the inner wall of mounting plate 6, ensuring that it continues to play a vibration reduction role. The outer wall of sliding block 2 is slidably connected to the inner wall of mounting plate 6. Sliding block 2 slides in a specific inner wall. During the sliding process, it transmits the force to damper 2 9. At the same time, during the sliding process, it can also drive the upper rotating rod 7 and the lower rotating rod 8 to rotate.

[0037] Reference Figure 1 , Figure 3 and Figure 5The disassembly assembly includes a mounting block 10, which is an important component of the disassembly assembly and is used to connect and disassemble the housing 1 and the drill pipe 15. The outer wall of the mounting block 10 is fixedly connected to the inner wall of the housing 1, providing a foundation for the connection with the drill pipe 15 and ensuring the stability of the connection. The drill pipe 15 is detachably connected to the outer wall of the housing 1. The drill pipe 15 is used to send the shock absorber 16 downhole. The detachable connection facilitates the installation, disassembly, and maintenance of the drill pipe 15. Sliding plates 11 are fixedly connected to both sides of the mounting block 10. The sliding plates 11 on both sides of the mounting block 10 can slide in the grooves on the inner wall of the drill pipe 15, thereby ensuring the accuracy of the installation and facilitating the installation and disassembly of the mounting block 10. A mandrel 12 is slidably connected to the inner wall of the housing 1. The mandrel 12 slides on the inner wall of the housing 1 and can drive the fixed plate 14 and the shock absorber 16 to move, realizing the vibration and impact operation in the well.

[0038] The outer wall of the mounting block 10 is slidably connected to the inner wall of the drill rod 15. The mounting block 10 slides on the inner wall of the drill rod 15, and in conjunction with the sliding of the sliding plate 11 in the groove, the mounting block 10 can be accurately installed into the designated position inside the drill rod 15. The outer sides of both sliding plates 11 are fixedly connected to the inner wall of the drill rod 15. The fixed sliding plates 11 to the inner wall of the drill rod 15 can ensure the firmness of the connection between the mounting block 10 and the drill rod 15 and prevent the mounting block 10 from loosening during use. The inner wall of the drill rod 15 is threaded with mounting bolts 13. The mounting bolts 13 are used to fix the drill rod 15 and the mounting block 10 together. The threaded connection can ensure the tightness and stability of the connection. The outer wall of the mounting bolt 13 is threadedly connected to the inner wall of the mounting block 10. The threaded connection between the mounting bolt 13 and the mounting block 10 makes the connection between the drill rod 15 and the mounting block 10 more firm and can withstand the vibration and impact during operation.

[0039] A fixed plate 14 is fixedly connected to the outer wall of the spindle 12. The spindle 12 drives the fixed plate 14 to move. The fixed plate 14 provides an installation base for the shock absorber 16, which can ensure the stability of the shock absorber 16 during operation. The shock absorber 16 is fixedly connected to the outer wall of the fixed plate 14. The shock absorber 16 is a key component for vibration and impact in the well. Fixed on the fixed plate 14, it can perform operations in the well under the drive of the spindle 12. The outer wall of another fixed plate 3 is fixedly connected to the outer wall of the fixed plate 14. The other fixed plate 3 is fixed to the outer wall of the fixed plate 14 and can receive the vibration energy from the fixed plate 14 and the shock absorber 16. It can also transmit the force through the connection with other components, thus playing the role of vibration reduction and protecting the outer shell 1.

[0040] Working principle: When the drill pipe 15 drives the shock absorber 16 down into the well and impacts objects inside the well, a strong vibration will act on the inside of the outer shell 1. If no shock-absorbing components are added, the service life of the outer shell 1 will be drastically reduced. Therefore, when the shock absorber 16 impacts, the vibration force is transmitted to the fixed plate 3. The fixed plate 3 then transmits the force to the sliding block 2. The sliding block 2 slides on the inner wall of the mounting plate 6 and transmits the force to the damper 9. The damper 9 generates damping force through its internal structure, converting the vibration energy into heat energy and other forms of energy to dissipate it, thereby reducing the vibration amplitude and playing a vibration reduction role. At the same time, when the sliding block 2 slides, the upper rotating rod 7 and the lower rotating rod 8 will rotate, causing the slider 4 to hit the damper 5, which further absorbs the vibration. This achieves two-stage vibration reduction, resulting in a better vibration reduction effect and protecting the outer shell 1.

[0041] When it is necessary to install the outer casing 1 and the drill rod 15, the mounting block 10 on the outer wall of the outer casing 1 is inserted into the inner wall of the drill rod 15. The inner wall of the drill rod 15 has a sliding groove, and the sliding plates 11 on both sides of the mounting block 10 will slide inside the sliding groove to ensure the accuracy of the installation. When the mounting block 10 drives the sliding plate 11 to slide to the designated position, the drill rod 15 and the mounting block 10 are fixedly connected together by the mounting bolts 13, thereby realizing the installation between the drill rod 15 and the outer casing 1.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A vibratory impact tool for well workover, comprising a housing (1), characterized in that: The outer wall of the outer shell (1) is fixedly connected to a fixing plate (3), and the outer wall of the fixing plate (3) is rotatably connected to multiple upper rotating rods (7). The other end of each of the multiple upper rotating rods (7) is rotatably connected to a slider (4). The outer wall of the slider (4) is rotatably connected to multiple lower rotating rods (8). One end of each lower rotating rod (8) is rotatably connected to another fixing plate (3). The outer wall of the slider (4) is fixedly connected to a damper (5). The outer wall of the slider (4) is slidably connected to a mounting plate (6). The inner wall of the outer shell (1) is equipped with a disassembly assembly for disassembly.

2. The vibration impact tool for well workover according to claim 1, characterized in that: The disassembly assembly includes a mounting block (10), the outer wall of which is fixedly connected to the inner wall of the outer shell (1), and a drill rod (15) is detachably connected to the outer wall of the outer shell (1). Sliding plates (11) are fixedly connected to both sides of the mounting block (10).

3. The vibration impact tool for well workover according to claim 2, characterized in that: The inner wall of the outer shell (1) is slidably connected to the spindle (12), the outer wall of the mounting block (10) is slidably connected to the inner wall of the drill rod (15), and the outer sides of the two sliding plates (11) are fixedly connected to the inner wall of the drill rod (15).

4. A vibratory impact tool for well workover according to claim 3, characterized in that: The inner wall of the drill rod (15) is threaded with a mounting bolt (13), and the outer wall of the mounting bolt (13) is threaded with the inner wall of the mounting block (10).

5. A vibratory impact tool for well workover according to claim 1, characterized in that: The outer wall of the fixed plate (3) is fixedly connected to a sliding block (2), and the outer wall of the sliding block (2) is fixedly connected to a damper (9).

6. A vibratory impact tool for well workover according to claim 5, characterized in that: The other end of the second damper (9) is fixedly connected to another sliding block (2), and the outer wall of the other sliding block (2) is fixedly connected to the outer wall of the other fixed plate (3).

7. A vibratory impact tool for well workover according to claim 5, characterized in that: The other end of the damper (5) is fixedly connected to the inner wall of the mounting plate (6), and the outer wall of the sliding block (2) is slidably connected to the inner wall of the mounting plate (6).

8. A vibratory impact tool for well workover according to claim 3, characterized in that: The outer wall of the spindle (12) is fixedly connected to a fixed disk (14), the outer wall of the fixed disk (14) is fixedly connected to a shocker (16), and the outer wall of another fixed plate (3) is fixedly connected to the outer wall of the fixed disk (14).

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