A natural gas workover string cleanout device

By combining a motor-driven threaded rod with a sprayer, the problem of residual gravel and impurities in existing equipment is solved, achieving efficient cleaning of pipelines and increased durability of the device.

CN224332991UActive Publication Date: 2026-06-09PETROCHINA CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
PETROCHINA CO LTD
Filing Date
2025-05-22
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing natural gas well repair and dredging equipment leaves gravel and impurities inside the pipeline when processing them, increasing the workload of subsequent processing and lacking practicality.

Method used

The device employs a motor-driven threaded rod structure, uses a scraper to remove impurities from the inner wall of the pipe, and utilizes a sprayer to spray cleaning agent and water. It also features a multi-layered protective structure to enhance the durability of the device.

Benefits of technology

It achieves efficient cleaning of pipelines, completely removes impurities, adapts to pipelines of different sizes, and extends service life.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a natural gas well repair operation pipe column dredging equipment relates to mechanical manufacturing and design technical field, including the shell, the shell top outer wall fixedly connected with the fixer, the fixer inner wall fixedly connected with the motor, motor drive end fixedly connected with the drive link, the drive link's outer wall rotationally connects in the inner wall of shell, drive link bottom outer wall fixedly connected with bevel gear no.
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Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing and design technology, and in particular to a natural gas well workover tubing unblocking device. Background Technology

[0002] With global economic development and population growth, the demand for energy continues to increase. Natural gas, as a clean and efficient fossil fuel, plays an increasingly important role in the energy structure. It has lower carbon emissions and is more environmentally friendly compared to traditional energy sources such as coal and oil. Many countries have made natural gas development a key component of their national energy strategies, increasing their exploration and extraction efforts. This has led to a continuous expansion of natural gas well workover operations, placing higher demands on the efficiency and quality of these operations.

[0003] Most existing natural gas well repair and dredging equipment uses vibration to crush and break up gravel and impurities inside the pipeline. This results in the gravel and impurities remaining inside the pipeline after processing, requiring further processing and increasing workload, thus making it impractical. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that most existing natural gas well repair pipeline dredging equipment only uses vibration to crush the gravel and impurities inside the pipeline, which results in the gravel and impurities remaining inside the pipeline after processing, requiring further processing and increasing workload, thus making it impractical. Therefore, this utility model proposes a natural gas well repair pipeline dredging equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a natural gas well repair and dredging equipment for tubing, comprising a housing, a retainer fixedly connected to the outer wall of the top of the housing, a motor fixedly connected to the inner wall of the retainer, a drive rod fixedly connected to the drive end of the motor, the outer wall of the drive rod rotatably connected to the inner wall of the housing, a bevel gear I fixedly connected to the outer wall of the bottom of the drive rod, the outer wall of the bevel gear I rotatably connected to the inner wall of the housing, a plurality of bevel gears II meshing with the outer wall of the bevel gears I, a threaded rod fixedly connected to the inner wall of the bevel gears II, and the outer wall of the threaded rod rotatably connected to the inner wall of the housing.

[0006] Preferably, four bevel gears are meshed on the outer wall of the first bevel gear, a slider is threadedly connected to the outer wall of the threaded rod, the outer wall of the slider is slidably connected to the inner wall of the outer shell, a collection groove is fixedly connected to the outer wall of the slider, the outer wall of the collection groove is slidably connected to the inner wall of the outer shell, and a scraper is fixedly connected to the outer wall of the collection groove.

[0007] Preferably, a drill bit is fixedly connected to the outer wall at the bottom end of the outer casing.

[0008] Preferably, a drive disc is rotatably connected to the outer wall of the drive rod, the outer wall of the drive disc is rotatably connected to the outer wall of the housing, and a sprayer is fixedly connected to the outer wall of the drive disc.

[0009] Preferably, an anti-corrosion layer is fixedly connected to the outer wall of the outer shell, and a sealing layer is fixedly connected to the outer wall of the anti-corrosion layer.

[0010] Preferably, an anti-collision layer is fixedly connected to the outer wall of the sealing layer.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. In this utility model, a structure such as a motor and a threaded rod is adopted. The motor drives the threaded rod to rotate, so that the scrapers on multiple collection tanks are attached to the surface of the pipe. Then, the whole device moves upward, so that the scrapers scrape off the impurities on the pipe wall. The scraped impurities are collected by the collection tank and carried out of the pipe, so that the pipe can be cleaned more completely. In addition, the device can be adjusted for pipes of different sizes to better perform the cleaning work.

[0013] 2. In this utility model, a drive disc and a sprayer are used. While the motor drives the drive rod to rotate, it drives the sprayer to spray the cleaning agent and water evenly onto the inner wall of the pipe, thereby improving the cleaning effect inside the pipe. In addition, a multi-layer structure is added to the outer shell of the device to increase the service life of the device. Attached Figure Description

[0014] Figure 1 This utility model provides a three-dimensional structural diagram of a natural gas well workover tubing unblocking device;

[0015] Figure 2 This utility model provides a schematic diagram of the internal structure of a natural gas well workover tubing unblocking device;

[0016] Figure 3 This utility model provides a schematic diagram of the transmission structure of a natural gas well workover tubing unblocking device;

[0017] Figure 4 This utility model provides a schematic diagram of the cleaning structure of a natural gas well workover tubing unblocking device;

[0018] Figure 5 This utility model provides a cross-sectional view of the outer casing of a natural gas well workover and unblocking equipment.

[0019] Legend: 1. Outer shell; 2. Fixing device; 3. Motor; 4. Drive rod; 5. Bevel gear one; 6. Bevel gear two; 7. Threaded rod; 8. Slider; 9. Collection tank; 10. Shovel; 11. Drill bit; 12. Drive disc; 13. Sprayer; 14. Anti-corrosion layer; 15. Sealing layer; 16. Anti-collision layer. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: As Figures 1-5 As shown, this utility model provides a technical solution: a natural gas well repair and dredging equipment for tubing, including a shell 1, a fixture 2 fixedly connected to the outer wall of the top of the shell 1, a motor 3 fixedly connected to the inner wall of the fixture 2, a drive rod 4 fixedly connected to the drive end of the motor 3, the outer wall of the drive rod 4 rotatably connected to the inner wall of the shell 1, a bevel gear 5 fixedly connected to the outer wall of the bottom of the drive rod 4, the outer wall of the bevel gear 5 rotatably connected to the inner wall of the shell 1, several bevel gears 6 meshing with the outer wall of the bevel gear 5, a threaded rod 7 fixedly connected to the inner wall of the bevel gear 6, the outer wall of the threaded rod 7 rotatably connected to the inner wall of the shell 1, four bevel gears 6 meshing with the outer wall of the bevel gear 5, a slider 8 threadedly connected to the outer wall of the threaded rod 7, the outer wall of the slider 8 slidably connected to the inner wall of the shell 1, a collection trough 9 fixedly connected to the outer wall of the slider 8, the outer wall of the collection trough 9 slidably connected to the inner wall of the shell 1, and a scraper 10 fixedly connected to the outer wall of the collection trough 9.

[0023] In this embodiment, when the inner wall of the pipe needs cleaning, the device is first placed in a suitable position on the pipe, and then the motor 3 is started. The drive end of the motor 3 rotates, thereby driving the drive rod 4 to rotate on the inner wall of the outer casing 1. The rotation of the drive rod 4 drives the bevel gear 5 to rotate on the inner wall of the outer casing 1. The rotation of the bevel gear 5 drives the four bevel gears 6 meshing on the outer wall of the bevel gear 5 to rotate accordingly. The rotation of the bevel gears 6 drives the threaded rod 7 to rotate on the inner wall of the outer casing 1. The rotation of the threaded rod 7 drives the slider 8 threadedly connected to the outer wall of the threaded rod 7 to move outward along the inner wall of the outer casing 1. The movement of the slider 8 drives the collection groove 9 fixed on its outer wall to move along the inner wall of the outer casing 1. When multiple scrapers 10 adhere to the inner wall of the pipe, the motor is turned off, and then the device is started to move the entire device upward. Under the action of the scrapers 10, the impurities on the inner wall of the pipe are scraped off and collected in the collection tank 9, and then carried out of the pipe. This part mainly introduces the working principle of the transmission structure. It adopts a structure such as a motor and a threaded rod. The motor drives the threaded rod to rotate, so that the scrapers on the multiple collection tanks adhere to the pipe surface. Then, the entire device moves upward, so that the scrapers scrape off the impurities on the pipe wall. The scraped-off impurities are collected in the collection tank and carried out of the pipe, so that the pipe can be cleaned more completely. In addition, the device can be adjusted for pipes of different sizes to better perform the cleaning work.

[0024] Example 2: As Figures 1-5 As shown, a drill bit 11 is fixedly connected to the outer wall of the bottom end of the outer shell 1, a drive disc 12 is rotatably connected to the outer wall of the drive rod 4, the outer wall of the drive disc 12 is rotatably connected to the outer wall of the outer shell 1, a sprayer 13 is fixedly connected to the outer wall of the drive disc 12, an anti-corrosion layer 14 is fixedly connected to the outer wall of the outer shell 1, a sealing layer 15 is fixedly connected to the outer wall of the anti-corrosion layer 14, and an anti-collision layer 16 is fixedly connected to the outer wall of the sealing layer 15.

[0025] In this embodiment, when the drive rod 4 rotates, it drives the drive disc 12 to rotate along the outer wall of the outer casing 1. At the same time, the sprayer 13 is activated to spray cleaning agent and water onto the inner wall of the pipe. In addition, the anti-corrosion layer 14 can prevent the device from being corroded by corrosive substances in the pipe. The sealing layer 15 can prevent gas or liquid inside the pipe from entering the device. The anti-collision layer 16 can prevent damage to the device from external impacts. This part mainly introduces the working principle of the spray structure and the protective structure. By using the drive disc and sprayer, the motor drives the drive rod to rotate while driving the sprayer to spray cleaning agent and water evenly onto the inner wall of the pipe, thereby improving the cleaning effect inside the pipe. Secondly, the outer casing of the device is equipped with a multi-layer structure to increase the service life of the device.

[0026] The working principle of this embodiment is as follows: When the inner wall of the pipe needs cleaning, first place the device in a suitable position on the pipe, then start the motor 3. The drive end of the motor 3 rotates, thereby driving the drive rod 4 to rotate on the inner wall of the outer casing 1. The rotation of the drive rod 4 drives the bevel gear 5 to rotate on the inner wall of the outer casing 1. The rotation of the bevel gear 5 drives the four bevel gears 6 meshing on the outer wall of the bevel gear 5 to rotate accordingly. The rotation of the bevel gears 6 drives the threaded rod 7 to rotate on the inner wall of the outer casing 1. The rotation of the threaded rod 7 drives the slider 8 threadedly connected to the outer wall of the threaded rod 7 to move outward along the inner wall of the outer casing 1. The movement of the slider 8 drives the collection groove 9 fixed on its outer wall to move along the inner wall of the outer casing 1. When multiple scrapers 10 adhere to the inner wall of the pipe, the motor is turned off, and then the device is started to move the entire device upward. Under the action of the scrapers 10, the impurities on the inner wall of the pipe are scraped into the collection tank 9, collected by the collection tank 9, and carried out of the pipe. When the drive rod 4 rotates, it drives the drive disc 12 to rotate along the outer wall of the outer casing 1. At the same time, the sprayer 13 is started to spray cleaning agent and water onto the inner wall of the pipe. In addition, the anti-corrosion layer 14 can prevent the device from being corroded by corrosive substances in the pipe. The sealing layer 15 can prevent gas or liquid inside the pipe from entering the device. The anti-collision layer 16 can prevent damage to the device caused by external impacts.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A natural gas well workover tubing unblocking device, comprising a housing (1), characterized in that: A retainer (2) is fixedly connected to the top outer wall of the outer shell (1). A motor (3) is fixedly connected to the inner wall of the retainer (2). A drive rod (4) is fixedly connected to the drive end of the motor (3). The outer wall of the drive rod (4) is rotatably connected to the inner wall of the outer shell (1). A bevel gear (5) is fixedly connected to the bottom outer wall of the drive rod (4). The outer wall of the bevel gear (5) is rotatably connected to the inner wall of the outer shell (1). Several bevel gears (6) are meshed on the outer wall of the bevel gears (5). A threaded rod (7) is fixedly connected to the inner wall of the bevel gears (6). The outer wall of the threaded rod (7) is rotatably connected to the inner wall of the outer shell (1).

2. The natural gas well workover tubing clearing device according to claim 1, characterized in that: The outer wall of the first bevel gear (5) is meshed with four second bevel gears (6). The outer wall of the threaded rod (7) is threaded with a slider (8). The outer wall of the slider (8) is slidably connected to the inner wall of the outer shell (1). The outer wall of the slider (8) is fixedly connected with a collection groove (9). The outer wall of the collection groove (9) is slidably connected to the inner wall of the outer shell (1). The outer wall of the collection groove (9) is fixedly connected with a shovel (10).

3. The natural gas well workover tubing clearing equipment according to claim 2, characterized in that: A drill bit (11) is fixedly connected to the bottom outer wall of the outer casing (1).

4. The natural gas well workover tubing clearing device according to claim 3, characterized in that: The drive rod (4) is rotatably connected to the drive disc (12), the outer wall of the drive disc (12) is rotatably connected to the outer wall of the outer shell (1), and the outer wall of the drive disc (12) is fixedly connected to the sprayer (13).

5. A natural gas well workover tubing clearing device according to claim 4, characterized in that: The outer wall of the outer shell (1) is fixedly connected to an anti-corrosion layer (14), and the outer wall of the anti-corrosion layer (14) is fixedly connected to a sealing layer (15).

6. A natural gas well workover tubing clearing device according to claim 5, characterized in that: An anti-collision layer (16) is fixedly connected to the outer wall of the sealing layer (15).