Cleaning device system of coal-bed gas well oil pipe

Abstract

The utility model provides a cleaning device system of a coal-bed gas well oil pipe, the cleaning device system comprises a pump part, a water tank and a nozzle, the water inlet end of the pump part is connected into the water tank through a water inlet pipeline, and the water outlet end of the pump part is connected with a water outlet pipeline; the spray head is arranged at the end, away from the pump part, of the water outlet pipeline, the spray head is obliquely arranged relative to the water outlet pipeline, the position, close to the spray head, of the water outlet pipeline is sleeved with a sleeve rod, and the sleeve rod is used for preventing the water outlet pipeline from swinging when the oil pipe is cleaned. Through specific arrangement of the pump part, the water tank and the spray head, the portable cleaning device system is formed, and the portable cleaning device system has the advantages of being high in field applicability, cleaning efficiency and cleaning degree, easy and convenient to operate, low in cost, safe, environmentally friendly and the like, and is suitable for industrial application and popularization.

Description

Technical Field

[0001] This utility model belongs to the field of oil pipe cleaning technology in coalbed methane well workover, and relates to a cleaning device system for oil pipes in coalbed methane wells. Background Technology

[0002] In coalbed methane well workover operations, the inner wall of the pulled-out tubing is covered with a large amount of coal dust and scale. However, the pulled-out tubing needs to be put back into the well for reuse. If the tubing is not thoroughly cleaned, it can easily lead to downhole failures. Therefore, cleaning the inner wall of the tubing is a major challenge in the quality management of construction operations.

[0003] In coalbed methane well workover operations, the original tubing and sucker rods retrieved often develop varying degrees of viscous deposits on their surfaces due to long-term exposure to coal dust, salts, and other substances. These deposits coat the outer walls of the sucker rods and adhere to the inner walls of the tubing. After being brought to the surface, these viscous deposits solidify and clump together as moisture evaporates, making cleaning extremely difficult. However, most of the original tubing and rods still need to be put back into the well for reuse. If cleaning is not thorough, some of the solidified deposits on the tubing and rods will break off during the well completion process due to construction impacts, accumulating at the lower section of the tubing string and the pump inlet, leading to pump jamming and rework. Therefore, tubing and rod cleaning is a crucial aspect of well workover quality management.

[0004] Because solidified substances such as coal dust adhere to the inner wall of oil pipes, cleaning the inside of the pipes is extremely difficult. Conventional cleaning methods involve using large-sized pipe gauges to perform limited mechanical abrasion cleaning of the inner wall. However, for oil pipes with severe internal scaling, replacement is the only option, resulting in material waste. Therefore, conventional cleaning methods suffer from low efficiency, high rework rates, dust pollution, high labor intensity, and high costs. Furthermore, because the scale buildup inside the oil pipes is invisible, visual inspection is extremely difficult, making cleaning extremely challenging and seriously affecting the normal and stable production of coalbed methane wells. Therefore, how to efficiently clean the inner wall of oil pipes is a particularly prominent problem in coalbed methane well workover operations.

[0005] Existing technologies disclose cleaning measures for tubing during well workover operations in oilfields, using large-scale vehicle-mounted high-pressure jet systems. However, these systems suffer from drawbacks such as poor site adaptability, high equipment costs, and cumbersome operation, making them unsuitable for cleaning the original well tubing and sucker rods retrieved during coalbed methane well workover operations. Therefore, there is an urgent need to design a cleaning device system for coalbed methane well tubing to overcome the shortcomings of existing technologies and meet practical application requirements. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a cleaning device system for coalbed methane well tubing. In this utility model, by specifically configuring the pump, water tank, and nozzle, a portable cleaning device system is constructed. It has the advantages of strong on-site applicability, high cleaning efficiency, high cleanliness, simple and convenient operation, low cost, and safety and environmental protection, making it suitable for industrial promotion and use.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] This utility model provides a cleaning device system for oil pipes in coalbed methane wells. The cleaning device system includes a pump, a water tank, and a nozzle. The water inlet of the pump is connected to the water tank through a water inlet pipe, and the water outlet of the pump is connected to a water outlet pipe.

[0009] The nozzle is provided at the end of the water outlet pipe away from the pump. The nozzle is inclined relative to the water outlet pipe, and a sleeve is provided on the water outlet pipe near the nozzle. The sleeve is used to prevent the water outlet pipe from swinging when cleaning the oil pipe.

[0010] In this utility model, by specifically configuring the pump, water tank and nozzle, a portable cleaning device system is constructed. It has the advantages of strong on-site applicability, high cleaning efficiency, high degree of cleanliness, simple and convenient operation, low cost and safety and environmental protection, and is suitable for industrial promotion and use.

[0011] It should be noted that the pump, water tank, nozzle, and sleeve are all indispensable in this utility model, which makes the overall cleaning device system occupy a small area and is easy to skid-mount and portable. It is highly applicable to field construction sites for coalbed methane, requires less labor resources for cleaning operations, and can generally be completed by 1 to 2 people. The cleaning effect is highly efficient and thorough, and the overall operation is convenient and efficient.

[0012] It should be noted that this utility model does not impose special limitations on the capacity, structure, or other features of the water tank, and those skilled in the art can make adaptive selections according to actual conditions. The water tank can be rectangular, cubic, or similar in shape, and casters can be installed at the bottom of the tank for easy movement and operation by the operator.

[0013] It should be noted that this utility model does not impose special limitations on the size, model, and material of the nozzle, and those skilled in the art can make adaptive selections according to actual conditions. The nozzle can be a metal nozzle and can be detachably connected to one end of the water outlet pipe.

[0014] It should be noted that a mobile sewage collection device can be installed at the bottom of the cleaning oil pipe in this utility model, which facilitates the collection of cleaning sewage and protects the environment. When cleaning the oil pipe, the oil pipe can be neatly placed on the pipe bridge, with a height difference of about 10cm between the two ends of the pipe bridge. The end closer to the operator is set as the lower position to ensure that the cleaning sewage flows out only from the lower end.

[0015] It should be noted that the inlet and outlet water pipes in this utility model can be flexible hoses, and the sleeve rod can be a rigid pipe. The sleeve rod can be fitted onto one end of the outlet water pipe to form a safety rod. The design is safe and easy to operate. It can effectively control the water pipe when it enters or exits the oil pipe at the top of the outlet hose to avoid the risk of injury caused by high pressure swing. Moreover, it does not affect the forward speed of the nozzle and the cleaning effect during the cleaning process.

[0016] As a preferred technical solution of this utility model, the nozzle is evenly distributed with at least three spray holes, such as 3, 4, 5, 6, 7, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0017] It should be noted that the nozzle of this invention has at least three spray holes evenly distributed. This is because only when the liquid is sprayed obliquely backward can the nozzle be subjected to uniform force, keeping it as centered as possible during the cleaning process and ensuring the cleaning effect. When the number of spray holes is less than three, the nozzle may be subjected to uneven force, resulting in the inability to move forward or poor cleaning effect.

[0018] As a preferred technical solution of this utility model, the tilting spray angle of the nozzle is 30° to 60°, for example, it can be 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc., but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0019] In this invention, the spray angle of the nozzle is 30° to 60°, with a preferred tilt angle of 45°, tilting towards the pipe wall. The water jet is sprayed onto the inner wall of the oil pipe, generating a forward force. This allows the cleaning nozzle to move automatically into the oil pipe for cleaning without manual assistance during pipeline relocation, preventing the water inlet hose from accumulating inside the oil pipe. When moving backward, the hose can be manually pulled back. After the sleeve is exposed, the sleeve can be held by hand, making the operation safe, simple, and convenient.

[0020] As a preferred technical solution of this utility model, the diameter of the spray hole is 0.5mm to 1mm, for example, it can be 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, 0.1mm, etc., but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0021] In this invention, the diameter of the spray nozzle is 0.5mm to 1mm. This is because the smooth water flow and cleaning effect can be guaranteed within this range. If it is not within this range, the nozzle will be blocked by impurities during the rinsing process. If it is larger than this range, the water jet speed will be insufficient, reducing the rinsing effect. The shape of the nozzle is not specifically limited. Those skilled in the art can make an adaptive selection according to the actual situation. The shape of the nozzle can be circular, square, etc.

[0022] As a preferred technical solution of this utility model, the sleeve is an aluminum alloy sleeve or a polyvinyl chloride sleeve.

[0023] In this invention, an aluminum alloy sleeve or a polyvinyl chloride sleeve is selected, which is a lightweight and high-strength material, so that the forward speed of the nozzle and the cleaning effect are not affected during the cleaning process.

[0024] As a preferred technical solution of this utility model, the wall thickness of the sleeve rod is 0.3mm to 0.4mm, for example, it can be 0.3mm, 0.32mm, 0.34mm, 0.36mm, 0.38mm, 0.4mm, etc., but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0025] The wall thickness of the sleeve rod in this invention is 0.3mm to 0.4mm. This is because within this range, the strength of the sleeve rod can be guaranteed without affecting the forward speed of the hose. If it is not within this range, it may cause deformation or damage to the sleeve, or cause the hose to be unable to move forward normally due to excessive weight of the sleeve.

[0026] As a preferred technical solution of this utility model, the length of the sleeve is 50cm to 70cm, for example, it can be 50cm, 52cm, 54cm, 56cm, 58cm, 60cm, 62cm, 64cm, 66cm, 68cm, 70cm, etc., but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0027] In this invention, the length of the sleeve is 50cm to 70cm. This is because it is convenient for the operator to operate within this range and does not affect the forward speed of the hose. If it is not within this range, the sleeve length may be too short, making it impossible for the operator to operate, or the sleeve may be too long and heavy, affecting the forward speed of the hose.

[0028] As a preferred technical solution of this utility model, the pump is a plunger pump, and the pressure of the plunger pump is 3MPa to 15MPa, for example, it can be 3MPa, 4MPa, 5MPa, 6MPa, 7MPa, 8MPa, 9MPa, 10MPa, 11MPa, 12MPa, 13MPa, 14MPa, 15MPa, etc., but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0029] The pressure of the plunger pump in this invention is 3MPa to 15MPa. This is because within this range, the cleaning effect can be guaranteed without damaging the object being cleaned. If it is outside this range, the cleaning effect may be poor due to insufficient pressure, or the object being cleaned may be damaged due to excessive pressure.

[0030] As a preferred technical solution of this utility model, the length of the water outlet pipe exceeds 10m, for example, it can be 10m, 10.5m, 11m, 11.5m, 12m, 12.5m, 13m, 14m, 16m, etc., but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0031] The length of the water outlet pipe in this invention exceeds 10m because this length allows for convenient operation by the operator, regardless of distance, and does not affect the forward speed of the nozzle or the cleaning effect.

[0032] As a preferred technical solution of this utility model, the water outlet pipe is connected to the nozzle by a threaded connection or a quick connection.

[0033] It should be noted that this utility model does not impose special limitations on the thread type or the design of the internal and external threads of the threaded connection, and those skilled in the art can make adaptive adjustments according to the actual situation; the specific method of quick connection is not specially limited, and quick connection can be snap connection, groove connection, etc., and those skilled in the art can make adaptive selections according to the actual situation.

[0034] For example, the method of using the cleaning device system for coalbed methane well tubing in this utility model includes:

[0035] Ensure all connecting pipelines (including inlet and outlet pipes) and threaded connections are complete. The operator holds the nozzle and inserts it into one end of the oil pipe to be cleaned. At this point, the oil pipe to be cleaned can be neatly arranged on the pipe bridge, with a height difference of about 10cm between the two ends. The end closer to the operator should be set to the lower position to ensure that the cleaning wastewater only flows out from the lower end. Before cleaning the oil pipe, turn on the plunger pump and adjust the required pressure. After the nozzle is subjected to the backward reaction force, it will automatically enter the oil pipe for cleaning. Once the nozzle and nozzle are visible at the other end of the oil pipe to be cleaned, the previous process is complete. The operator holds the outlet pipe and pulls it backward until the nozzle is visible. Then, continue to slowly operate the outlet pipe until the nozzle is exposed. Insert the next oil pipe and repeat the above cleaning steps. During the entire cleaning process, the wastewater must be collected in a wastewater collection tank, which can be moved back and forth during the cleaning process.

[0036] The system refers to an equipment system, device system, or production device.

[0037] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0038] In this utility model, by specifically configuring the pump, water tank and nozzle, a portable cleaning device system is constructed. It has the advantages of strong on-site applicability, high cleaning efficiency, high degree of cleanliness, simple and convenient operation, low cost and safety and environmental protection, and is suitable for industrial promotion and use. Attached Figure Description

[0039] Figure 1 A schematic diagram of the structure of a coalbed methane well tubing cleaning device system provided in a specific embodiment of this utility model;

[0040] Among them, 1-water tank; 2-pump; 3-sprayer head; 4-sewage collection device; 5-pipe bridge; 6-inlet pipe; 7-outlet pipe. Detailed Implementation

[0041] It should be understood that in the description of this utility model, the terms "center," "longitudinal," "lateral," "upper," "lower," "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 used solely for the convenience of describing this utility model and for simplifying the description, 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 limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0042] It should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0044] In one embodiment, the present invention provides a cleaning device system for coalbed methane well tubing, such as... Figure 1 As shown, the cleaning device system includes a pump 2, a water tank 1, and a nozzle 3. The water inlet of the pump 2 is connected to the water tank 1 through a water inlet pipe 6, and the water outlet of the pump 2 is connected to a water outlet pipe 7. A nozzle 3 is provided at the end of the water outlet pipe 7 away from the pump 2. The nozzle 3 is inclined relative to the water outlet pipe 7, and a sleeve is provided on the water outlet pipe 7 near the nozzle 3. The sleeve is used to prevent the water outlet pipe 7 from swinging when cleaning the oil pipe.

[0045] It should be noted that, through the coordinated arrangement of the pump component 2, water tank 1, nozzle 3, and sleeve rod, the entire cleaning device system occupies a small area and is easy to skid-mount and portable. It is highly applicable to field construction sites for coalbed methane, requires less labor resources for cleaning operations, and can generally be completed by 1 to 2 people. The cleaning effect is highly efficient and thorough, and the overall operation is convenient and efficient.

[0046] It should be noted that the present invention does not impose any special limitations on the capacity, structure, or other features of the water tank 1, and those skilled in the art can make adaptive selections according to the actual situation. The shape of the water tank 1 can be a cuboid, cube, etc., and casters can be installed at the bottom of the water tank 1 for convenient movement and operation by the operator.

[0047] It should be noted that this utility model does not impose special limitations on the size, model, and material of the nozzle 3, and those skilled in the art can make adaptive selections according to actual conditions. The nozzle 3 can be a metal nozzle 3, which can be detachably connected to one end of the water outlet pipe 7.

[0048] It should be noted that in this utility model, a mobile sewage collection device 4 can be installed at the bottom of the cleaning oil pipe to facilitate the collection of cleaning sewage and protect the environment. When cleaning the oil pipe, the oil pipe can be neatly placed on the pipe bridge 5. There is a height difference of about 10cm between the two ends of the pipe bridge 5. The end closer to the operator is set as the lower position to ensure that the cleaning sewage only flows out from the lower end.

[0049] It should be noted that the inlet pipe 6 and outlet pipe 7 in this utility model can be flexible hoses, and the sleeve rod can be a rigid pipe. The sleeve rod can be fitted onto one end of the outlet pipe 7 to form a safety rod. The design is safe and easy to operate. It can effectively control the oil pipe when it enters or exits the top of the outlet hose to avoid the risk of injury caused by high pressure swing. Moreover, it does not affect the forward speed and cleaning effect of the nozzle 3 during the cleaning process.

[0050] In one embodiment, the nozzle 3 has at least three nozzles evenly distributed on it, such as 3, 4, 5, 6, 7, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0051] In one embodiment, the spray angle of the nozzle is 30° to 60°, for example, it can be 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc., but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0052] In this invention, the spray angle of the nozzle is 30° to 60°, with the most preferred angle being 45°, tilted towards the pipe wall. The water jet sprays onto the inner wall of the oil pipe, generating a forward force. This allows the cleaning nozzle 3 to move automatically into the oil pipe for cleaning without manual assistance during pipeline relocation, preventing the water inlet hose from accumulating inside the oil pipe. When moving backward, the hose can be manually pulled back. Once the sleeve is exposed, the sleeve can be held by hand, making the operation simple and convenient.

[0053] In one embodiment, the orifice diameter is 0.5mm to 1mm, for example, it can be 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, 1mm, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0054] There are no special limitations on the shape of the nozzle. Those skilled in the art can make an adaptive choice according to the actual situation. The shape of the nozzle can be circular, square, etc.

[0055] In one embodiment, the sleeve is an aluminum alloy sleeve or a polyvinyl chloride sleeve.

[0056] In one embodiment, the wall thickness of the sleeve is 0.3mm to 0.4mm, for example, it can be 0.3mm, 0.32mm, 0.34mm, 0.36mm, 0.38mm, 0.4mm, etc., but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0057] In one embodiment, the length of the sleeve is 50cm to 70cm, for example, it can be 50cm, 52cm, 54cm, 56cm, 58cm, 60cm, 62cm, 64cm, 66cm, 68cm, 70cm, etc., but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0058] In one embodiment, the pump component 2 is a plunger pump, and the pressure of the plunger pump is 3MPa to 15MPa, for example, it can be 3MPa, 4MPa, 5MPa, 6MPa, 7MPa, 8MPa, 9MPa, 10MPa, 11MPa, 12MPa, 13MPa, 14MPa, 15MPa, etc., but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0059] In one embodiment, the length of the water outlet pipe 7 exceeds 10m, for example, it can be 10m, 10.5m, 11m, 11.5m, 12m, 12.5m, 13m, 14m, 16m, etc., but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0060] The length of the water outlet pipe 7 in this invention exceeds 10m because this length allows operators to carry and operate the pipe easily, regardless of distance, without affecting the forward speed of the nozzle 3 or the cleaning effect.

[0061] In one embodiment, the water outlet pipe 7 is connected to the nozzle 3 via a threaded connection or a quick-connect connection.

[0062] It should be noted that this utility model does not impose special limitations on the thread type or the design of the internal and external threads of the threaded connection, and those skilled in the art can make adaptive adjustments according to the actual situation; the specific method of quick connection is not specially limited, and quick connection can be snap connection, groove connection, etc., and those skilled in the art can make adaptive selections according to the actual situation.

[0063] Example 1

[0064] This embodiment provides a cleaning device system for coalbed methane well tubing, wherein:

[0065] The device includes a pump 2, a water tank 1, and a nozzle 3. The water inlet of the pump 2 is connected to the water tank 1 through a water inlet pipe 6, and the water outlet of the pump 2 is connected to a water outlet pipe 7. A nozzle 3 is provided at the end of the water outlet pipe 7 away from the pump 2. The nozzle 3 is inclined relative to the water outlet pipe 7. The water outlet pipe 7 is connected to the nozzle 3 by a thread, and a sleeve is provided near the nozzle 3 on the water outlet pipe 7. The sleeve is used to prevent the water outlet pipe 7 from swinging when cleaning the oil pipe.

[0066] The nozzle 3 has 6 spray holes evenly distributed on it. The spray angle of the spray holes is 45° and the diameter of the spray holes is 1mm.

[0067] The sleeve is made of aluminum alloy with a wall thickness of 0.3mm and a length of 50cm. The length of the outlet pipe 7 is 10m.

[0068] Pump component 2 is a plunger pump, and the pressure of the plunger pump is 3MPa.

[0069] Example 2

[0070] This embodiment provides a cleaning device system for coalbed methane well tubing, wherein:

[0071] The device includes a pump 2, a water tank 1, and a nozzle 3. The water inlet of the pump 2 is connected to the water tank 1 through a water inlet pipe 6, and the water outlet of the pump 2 is connected to a water outlet pipe 7. A nozzle 3 is provided at the end of the water outlet pipe 7 away from the pump 2. The nozzle 3 is inclined relative to the water outlet pipe 7. The water outlet pipe 7 is connected to the nozzle 3 via a quick connection, and a sleeve is provided near the nozzle 3 on the water outlet pipe 7. The sleeve is used to prevent the water outlet pipe 7 from swinging when cleaning the oil pipe.

[0072] The nozzle 3 has four spray holes evenly distributed on it. The spray angle of the spray holes is 30° and the diameter of the spray holes is 0.5mm.

[0073] The sleeve is made of aluminum alloy with a wall thickness of 0.35mm and a length of 60cm. The length of the outlet pipe 7 is 12m.

[0074] Pump component 2 is a plunger pump, and the pressure of the plunger pump is 8MPa.

[0075] Example 3

[0076] This embodiment provides a cleaning device system for coalbed methane well tubing, wherein:

[0077] The device includes a pump 2, a water tank 1, and a nozzle 3. The water inlet of the pump 2 is connected to the water tank 1 through a water inlet pipe 6, and the water outlet of the pump 2 is connected to a water outlet pipe 7. A nozzle 3 is provided at the end of the water outlet pipe 7 away from the pump 2. The nozzle 3 is inclined relative to the water outlet pipe 7. The water outlet pipe 7 is connected to the nozzle 3 by a thread, and a sleeve is provided near the nozzle 3 on the water outlet pipe 7. The sleeve is used to prevent the water outlet pipe 7 from swinging when cleaning the oil pipe.

[0078] The nozzle 3 has 8 spray holes evenly distributed on it. The spray angle of the spray holes is 60° and the diameter of the spray holes is 0.7mm.

[0079] The sleeve is made of polyvinyl chloride, with a wall thickness of 0.4mm and a length of 70cm. The length of the outlet pipe 7 is 13m.

[0080] Pump component 2 is a plunger pump, and the pressure of the plunger pump is 15MPa.

[0081] In summary, this utility model, through the specific arrangement of the pump component 2, water tank 1, and nozzle 3, constitutes a portable cleaning device system, which has the advantages of strong on-site applicability, high cleaning efficiency, high degree of cleanliness, simple and convenient operation, low cost, and safety and environmental protection, and is suitable for industrial promotion and use.

[0082] The above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model fall within the protection and disclosure scope of the present utility model.

Claims

1. A cleaning device system for coalbed methane well tubing, characterized in that, The cleaning device system includes a pump, a water tank, and a nozzle. The water inlet of the pump is connected to the water tank through an inlet pipe, and the water outlet of the pump is connected to an outlet pipe. The nozzle is provided at the end of the water outlet pipe away from the pump. The nozzle is inclined relative to the water outlet pipe, and a sleeve is provided on the water outlet pipe near the nozzle. The sleeve is used to prevent the water outlet pipe from swinging when cleaning the oil pipe.

2. The cleaning device system for coalbed methane well tubing according to claim 1, characterized in that, The nozzle has at least three nozzles evenly distributed on it.

3. The cleaning device system for coalbed methane well tubing according to claim 2, characterized in that, The spray angle of the nozzle is 30° to 60°.

4. The cleaning device system for coalbed methane well tubing according to claim 2, characterized in that, The diameter of the nozzle is 0.5mm to 1mm.

5. The cleaning device system for coalbed methane well tubing according to claim 1, characterized in that, The sleeve is made of aluminum alloy or polyvinyl chloride.

6. The cleaning device system for coalbed methane well tubing according to claim 1, characterized in that, The wall thickness of the sleeve is 0.3mm to 0.4mm.

7. The cleaning device system for coalbed methane well tubing according to claim 1, characterized in that, The length of the sleeve is 50cm to 70cm.

8. The cleaning device system for coalbed methane well tubing according to claim 1, characterized in that, The pump is a plunger pump.

9. The cleaning device system for coalbed methane well tubing according to claim 1, characterized in that, The length of the water outlet pipe exceeds 10m.

10. The cleaning device system for coalbed methane well tubing according to claim 1, characterized in that, The water outlet pipe is connected to the nozzle via a threaded connection or a quick-connect connection.

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