Device for cleaning inner wall of oil pipe in oil field downhole operation

Abstract

The utility model discloses a device for cleaning the inner wall of an oil pipe in oil field underground operation, which relates to the technical field of mechanical engineering and comprises a drill bit, the outer surface of the drill bit is rotatably connected with a supporting disc, a cleaning mechanism is arranged on the drill bit, a power mechanism is arranged on the supporting disc, and the cleaning mechanism comprises a motor frame. By arranging the sliding frame, the bolt is screwed out of the connecting strip and the sliding frame, at the moment, the first spring rebounds, the sliding frame is pushed in the opposite direction of the connecting strip, and at the moment, the sliding frame drives the sliding rod to slide in the connecting strip; then, a sliding frame enables a cleaning strip to be tightly attached to the inner wall of the pipeline, through a first spring capable of pushing the sliding frame, the cleaning strip can be tightly attached to the inner wall of the pipeline for cleaning, the problem that part of areas are not cleaned in place can be avoided, dirt attached to the wall of the pipeline can be effectively removed, and the cleaning efficiency is improved. And therefore, the overall cleaning effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical engineering, and particularly relates to a device for cleaning the inner wall of oilfield downhole operation tubing. Background Technique

[0002] The device for cleaning the inner wall of oilfield downhole operation tubing, usually called tubing cleaner or inner wall cleaning tool of tubing, is used to clean sediments, impurities, sludge and other substances on the inner wall of oilfield downhole tubing, ensure that the inside of the tubing remains clean, effectively improve the oil and gas recovery rate, extend the equipment life, and reduce the maintenance frequency.

[0003] According to the publicly disclosed patent for the device for cleaning the inner wall of oilfield downhole operation with the publication number of CN221288930U, it includes a central rod. An acanthus thread structure is installed on the outer wall of the upper part of the central rod. A conical thread sleeve is installed on the acanthus thread structure. A conical cleaning brush is installed at the lower end of the acanthus thread structure. Both ends of the conical cleaning brush have conical surfaces matching the conical thread sleeve. A compression spring is arranged between the conical cleaning brush and the central rod. A fixed cone matching with it is arranged at the lower part of the conical cleaning brush. The utility model changes the radial dimension of the conical cleaning brush by rotating the conical thread sleeve to match different pipe diameters of the tubing, which can improve convenience. The acanthus thread structure can prevent the conical thread sleeve from retracting and fix the position of the conical thread sleeve, which can prevent the change of the size of the conical cleaning brush during use. However, there are still the following deficiencies:

[0004] When cleaning the inner wall of the pipeline, due to the accumulation of sediments and impurities in the tubing, the inside of the tubing may become uneven. If the cleaning strip does not closely adhere to the inner wall of the tubing, the dirt attached to the pipeline wall will be difficult to remove. Therefore, we propose a device for cleaning the inner wall of oilfield downhole operation tubing. Content of the Utility Model

[0005] The purpose of the utility model is to provide a device for cleaning the inner wall of oilfield downhole operation tubing. Through the rebound of the first spring, the sliding frame slides on the connecting strip, and at the same time, the sliding frame also drives the sliding rod to slide in the connecting strip, solving the problem of making the cleaning strip closely adhere to the inner wall of the pipeline.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] The utility model is a device for cleaning the inner wall of oilfield downhole operation tubing, including a drill bit. A support disc is rotatably connected to the outer surface of the drill bit. A cleaning mechanism is arranged on the drill bit. A power mechanism is arranged on the support disc;

[0008] The cleaning mechanism includes a motor frame, the inner wall of the motor frame is fixedly connected to a motor, the motor output shaft is fixedly connected to a rotating shaft through a coupling, the outer surface of the rotating shaft is fixedly connected to a pulley 1, the outer surface of the pulley 1 is transmission-connected to a belt, the end of the belt away from the pulley 1 is transmission-connected to a pulley 2, the outer surface of the drill bit is fixedly connected to a connecting strip, the inner wall of the connecting strip is slidably connected to a sliding rod, the top of the sliding rod is fixedly connected to a sliding frame, the top of the connecting strip is fixedly connected to a spring 1, the top of the sliding frame is fixedly connected to a cleaning strip, and the inner wall of the sliding frame is threadedly connected to a bolt.

[0009] Furthermore, the outer surface of the motor frame is fixedly connected to the outer surface of the support plate, the outer surface of the rotating shaft is rotatably connected to the inner wall of the support plate, the second inner wall of the pulley is fixedly connected to the outer surface of the drill bit, and there are four connecting strips in total, and the parts included in the outer surfaces of the connecting strips are the same.

[0010] Furthermore, there are two sliding rods in total, the inner wall of the sliding frame is slidably connected to the outer surface of the connecting strip, the end of the spring away from the sliding rod is fixedly connected to the inner wall of the sliding frame, the inner side of the spring is sleeved with the outer surface of the sliding rod, and the outer surface of the bolt is threadedly connected to the inner wall of the connecting strip.

[0011] Furthermore, the power mechanism includes a fixed shaft fixedly connected to the inner wall of the support plate, and there are four fixed shafts in total, and the parts included on the outer surfaces of the fixed shafts are the same.

[0012] Furthermore, the outer surface of the fixed shaft is rotatably connected to a moving rod, the inner wall of the moving rod is rotatably connected to a driving wheel, and the inner wall of the moving rod is rotatably connected to a supporting rod.

[0013] Furthermore, one end of the support rod away from the motion rod is rotatably connected to a connection block, one side of the connection blocks close to each other is fixedly connected to a sliding ring, and the inner wall of the sliding ring is slidably connected to a fixed rod.

[0014] Furthermore, the outer surface of the fixing rod is fixedly connected to the outer surface of the supporting plate, and the outer surface of the fixing rod is fixedly connected to a second spring.

[0015] Furthermore, one end of the second spring close to the support plate is fixedly connected to the outer surface of the sliding ring, and the inner side of the second spring is sleeved with the outer surface of the fixing rod.

[0016] The utility model has the following beneficial effects:

[0017] 1. The utility model is provided with a sliding frame. When the bolt is screwed out in the connecting bar and the sliding frame, the first spring will rebound at this time, pushing the sliding frame in the opposite direction of the connecting bar. At this time, the sliding frame will also drive the sliding rod to slide in the connecting bar, and then the sliding frame will make the cleaning strip closely adhere to the inner wall of the pipeline. Through the first spring that can push the sliding frame, it achieves the effect that the cleaning strip can closely adhere to the inner wall of the pipeline for cleaning, avoiding the problem that some areas cannot be cleaned properly, and effectively removing the dirt attached to the pipeline wall, thereby enhancing the overall cleaning effect.

[0018] 2. The utility model is provided with a moving rod. The second spring will always be in a state of rebounding. At this time, the second spring will push the sliding ring towards the direction of the support disc, and then the sliding ring will drive the support rod to move. At this time, the support rod will push the moving rod, causing the moving rod to drive the driving wheel to expand. Through the movement of the sliding ring, the moving rod expands, achieving the effect that the driving wheel can fit with the inner wall of the pipeline, thereby moving stably, making the operation of the device more controllable, and reducing the risks of failures and accidents caused by the device deviating from the track or getting stuck in the pipeline.

[0019] Of course, it is not necessary for any product implementing the utility model to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 It is a schematic diagram of the cleaning mechanism structure of the present utility model;

[0023] Figure 3 It is a schematic diagram of the first pulley structure of the present utility model;

[0024] Figure 4 It is a schematic diagram of the cleaning strip structure of the present utility model;

[0025] Figure 5 It is a schematic diagram of the sliding rod structure of the present utility model;

[0026] Figure 6 It is a schematic diagram of the power mechanism structure of the present utility model.

[0027] In the drawings, the list of components represented by each reference numeral is as follows:

[0028] 101, drill bit; 102, support disc; 2, cleaning mechanism; 201, motor frame; 202, motor; 203, rotating shaft; 204, pulley one; 205, belt; 206, pulley two; 207, connecting bar; 208, sliding rod; 209, sliding frame; 210, spring one; 211, cleaning strip; 212, bolt; 3, power mechanism; 301, moving rod; 302, driving wheel; 303, support rod; 304, connecting block; 305, sliding ring; 306, fixed rod; 307, spring two; 308, fixed shaft. Detailed implementation manner

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figure 1-6 As shown, the present invention is a device for cleaning the inner wall of an oil pipe during downhole operations in an oil field, including a drill bit 101. A support disc 102 is rotatably connected to the outer surface of the drill bit 101. A cleaning mechanism 2 is provided on the drill bit 101, and a power mechanism 3 is provided on the support disc 102. The device provides power through the power mechanism 3, enabling the device to move inside the oil pipe. Then, the cleaning mechanism 2 can be attached to the inner wall of the pipe to clean the inner wall of the pipe.

[0031] The cleaning mechanism 2 includes a motor mount 201. Inside the inner wall of the motor mount 201, a motor 202 is fixedly connected. The output shaft of the motor 202 is fixedly connected to a rotating shaft 203 through a coupling. On the outer surface of the rotating shaft 203, a first pulley 204 is fixedly connected. The motor mount 201 fixes the motor 202 to prevent the motor 202 from rotating on its own due to rotation, ensuring that the device can work properly. The outer surface of the first pulley 204 is drivingly connected to a belt 205. One end of the belt 205 away from the first pulley 204 is drivingly connected to a second pulley 206. On the outer surface of the drill bit 101, a connecting strip 207 is fixedly connected. Inside the inner wall of the connecting strip 207, a sliding rod 208 is slidably connected. The motor 202 drives the rotating shaft 203 to rotate, then the rotating shaft 203 drives the first pulley 204 to rotate. After that, the first pulley 204 drives the second pulley 206 to rotate through the belt 205, and then the second pulley 206 drives the drill bit 101 to rotate to clean the inner wall of the pipeline. At the top of the sliding rod 208, a sliding frame 209 is fixedly connected. At the top of the connecting strip 207, a first spring 210 is fixedly connected. At the top of the sliding frame 209, a cleaning strip 211 is fixedly connected. Inside the inner wall of the sliding frame 209, a bolt 212 is threadedly connected. The rebound of the first spring 210 will push the sliding frame 209, causing the sliding frame 209 to drive the cleaning strip 211 to move and tightly fit the cleaning strip 211 against the inner wall of the oil pipe for cleaning. The outer surface of the motor mount 201 is fixedly connected to the outer surface of the support disc 102. The outer surface of the rotating shaft 203 is rotatably connected to the inner wall of the support disc 102. The inner wall of the second pulley 206 is fixedly connected to the outer surface of the drill bit 101. There are four connecting strips 207 in total. The second pulley 206 drives the drill bit 101 to rotate. At this time, the drill bit 101 drives the sliding frame 209 to rotate through the connecting strip 207, so that the sliding frame 209 drives the cleaning strip 211 to rotate and clean. The parts included on the outer surface of the connecting strip 207 are the same. There are two sliding rods 208 in total. The inner wall of the sliding frame 209 is slidably connected to the outer surface of the connecting strip 207. The connecting strip 207 restricts the position of the sliding frame 209, so that the sliding frame 209 can only move along the connecting strip 207, preventing the sliding frame 209 from shifting during rotation and ensuring that the device can clean stably. One end of the first spring 210 away from the sliding rod 208 is fixedly connected to the inner wall of the sliding frame 209. The inner side of the first spring 210 is sleeved on the outer surface of the sliding rod 208. The outer surface of the bolt 212 is threadedly connected to the inner wall of the connecting strip 207. The sliding rod 208 restricts the movement of the first spring 210, preventing the first spring 210 from shifting during movement and ensuring that the cleaning strip 211 can fit against the inner wall of the oil pipe for cleaning.

[0032] The power mechanism 3 includes fixed shafts 308 fixedly connected to the inner wall of the support disk 102. There are four fixed shafts 308 in total. The components included on the outer surface of the fixed shafts 308 are the same. A moving rod 301 is rotatably connected to the outer surface of the fixed shaft 308. The moving rod 301 can rotate along the fixed shaft 308. At this time, the fixed shaft 308 fixes the position of the moving rod 301 to prevent the moving rod 301 from shifting during the movement of the device, ensuring that the device can move normally. A driving wheel 302 is rotatably connected to the inner wall of the moving rod 301. A support rod 303 is rotatably connected to the inner wall of the moving rod 301. One end of the support rod 303 away from the moving rod 301 is rotatably connected to a connection block 304. A sliding ring 305 is fixedly connected to the side of the connection blocks 304 close to each other. A fixed rod 306 is slidably connected to the inner wall of the sliding ring 305. The movement of the sliding ring 305 will drive the connection block 304 to move. Then, the connection block 304 pushes the moving rod 301 through the support rod 303, causing the moving rod 301 to drive the driving wheel 302 to move and making the driving wheel 302 fit against the inner wall of the oil pipe, ensuring that the device can move stably.

[0033] The outer surface of the fixed rod 306 is fixedly connected to the outer surface of the support disk 102. A second spring 307 is fixedly connected to the outer surface of the fixed rod 306. One end of the second spring 307 close to the support disk 102 is fixedly connected to the outer surface of the sliding ring 305. The inner side of the second spring 307 is sleeved on the outer surface of the fixed rod 306. The fixed rod 306 restricts the movement of the second spring 307, making the second spring 307 can only move along the fixed rod 306, preventing the fixed rod 306 from tilting during movement, so as to ensure that the device can work normally.

[0034] A specific application of this embodiment is:

[0035] When the staff needs to use the device and the device is working in the pipeline, the second spring 307 will always be in a state of springback. At this time, the second spring 307 will push the sliding ring 305 towards the support plate 102. Then the sliding ring 305 will drive the support rod 303 to move. At this time, the support rod 303 will push the moving rod 301, so that the moving rod 301 drives the driving wheel 302 to expand, making the driving wheel 302 closely adhere to the inner wall of the pipeline, achieving the effect that the driving wheel 302 can be fitted with the inner wall of the pipeline, thus enabling stable movement, making the operation of the device more controllable, and reducing the risks of failures and accidents caused by the device deviating from the track or getting stuck in the pipeline. Then the start of the driving wheel 302 can make the device move in the pipeline. Then the bolt 212 can be unscrewed from the connecting strip 207 and the sliding frame 209. At this time, the first spring 210 will spring back and push the sliding frame 209 in the opposite direction of the connecting strip 207. At this time, the sliding frame 209 will also drive the sliding rod 208 to slide in the connecting strip 207. Then the sliding frame 209 will make the cleaning strip 211 closely adhere to the inner wall of the pipeline, achieving the effect that the cleaning strip 211 can closely adhere to the inner wall of the pipeline for cleaning, avoiding the problem of incomplete cleaning in some areas, and being able to effectively remove the dirt attached to the pipeline wall, thus enhancing the overall cleaning effect. Finally, the motor 202 is started. At this time, the motor 202 will make the rotating shaft 203 rotate. Then the rotating shaft 203 will drive the first pulley 204 to rotate. Then the first pulley 204 will drive the second pulley 206 to rotate through the belt 205. Finally, the second pulley 206 will drive the drill bit 101 to rotate. Then the drill bit 101 will break through the pipeline interior and can also drive the cleaning strip 211 to rotate for cleaning.

[0036] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0037] The above-disclosed preferred embodiments of the present invention are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A device for cleaning the inner wall of an oil pipe in an oil field downhole operation, comprising a drill bit (101), characterized in that: The outer surface of the drill bit (101) is rotatably connected to a support disk (102); a cleaning mechanism (2) is provided on the drill bit (101); and a power mechanism (3) is provided on the support disk (102); The cleaning mechanism (2) comprises a motor frame (201), the inner wall of the motor frame (201) is fixedly connected to a motor (202), the output shaft of the motor (202) is fixedly connected to a rotating shaft (203) via a coupling, the outer surface of the rotating shaft (203) is fixedly connected to a pulley 1 (204), the outer surface of the pulley 1 (204) is transmission-connected to a belt (205), the end of the belt (205) away from the pulley 1 (204) is transmission-connected to a pulley 2 (206), the outer surface of the drill bit (101) is fixedly connected to a connecting strip (207), the inner wall of the connecting strip (207) is slidably connected to a sliding rod (208), the top of the sliding rod (208) is fixedly connected to a sliding frame (209), the top of the connecting strip (207) is fixedly connected to a spring 1 (210), the top of the sliding frame (209) is fixedly connected to a cleaning strip (211), and the inner wall of the sliding frame (209) is threadedly connected to a bolt (212).

2. The device for cleaning the inner wall of an oil pipe in downhole operation in an oil field according to claim 1, characterized in that: The outer surface of the motor frame (201) is fixedly connected to the outer surface of the support disk (102), the outer surface of the rotating shaft (203) is rotatably connected to the inner wall of the support disk (102), the inner wall of the second pulley (206) is fixedly connected to the outer surface of the drill bit (101), and a total of four connecting strips (207) are provided, and the parts included on the outer surfaces of the connecting strips (207) are the same.

3. The device for cleaning the inner wall of an oil pipe in downhole operation in an oil field according to claim 1, characterized in that: There are two slide bars (208) in total. The inner wall of the slide frame (209) is slidably connected to the outer surface of the connecting strip (207). One end of the spring (210) away from the slide bar (208) is fixedly connected to the inner wall of the slide frame (209). The inner side of the spring (210) is sleeved with the outer surface of the slide bar (208). The outer surface of the bolt (212) is threadedly connected to the inner wall of the connecting strip (207).

4. The device for cleaning the inner wall of an oil pipe in downhole operation in an oil field according to claim 1, characterized in that: The power mechanism (3) comprises a fixed shaft (308) fixedly connected to the inner wall of the support plate (102), and a total of four fixed shafts (308) are provided, and the parts included on the outer surfaces of the fixed shafts (308) are the same.

5. The device for cleaning the inner wall of an oil pipe in downhole operation in an oil field according to claim 4, characterized in that: The outer surface of the fixed shaft (308) is rotatably connected to a movement rod (301), the inner wall of the movement rod (301) is rotatably connected to a driving wheel (302), and the inner wall of the movement rod (301) is rotatably connected to a support rod (303).

6. The device for cleaning the inner wall of an oil pipe in downhole operation in an oil field according to claim 5, characterized in that: One end of the support rod (303) away from the motion rod (301) is rotatably connected to a connection block (304), and a sliding ring (305) is fixedly connected to the side of the connection block (304) close to each other, and a fixed rod (306) is slidably connected to the inner wall of the sliding ring (305).

7. The device for cleaning the inner wall of an oil pipe in downhole operation in an oil field according to claim 6, characterized in that: The outer surface of the fixing rod (306) is fixedly connected to the outer surface of the supporting plate (102), and a second spring (307) is fixedly connected to the outer surface of the fixing rod (306).

8. The device for cleaning the inner wall of an oil pipe in downhole operation in an oil field according to claim 7, characterized in that: One end of the second spring (307) close to the support plate (102) is fixedly connected to the outer surface of the sliding ring (305), and the inner side of the second spring (307) is sleeved with the outer surface of the fixing rod (306).

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