A sand control screen short section and use method thereof

Abstract

The present invention discloses a sand control screen tube short section and a use method thereof, and relates to the field of sand control screen tubes, comprising an outer screen tube, an inner screen tube, a cleaning component, a second end head, an oil pipe connecting pipe, and a clamping hoop is installed at one end of the oil pipe connecting pipe, a threaded pipe is installed at the end of the outer screen tube away from the second end head, the surface thread of the threaded pipe is detachably connected with the first end head, a driving component is arranged on the inner wall of the first end head, and the cleaning component comprises a transverse cleaning unit and a longitudinal cleaning unit. The present invention is provided with a cleaning component, which can be driven by the arranged driving component to make the motor work, thereby driving the rotation of the first bevel gear, thereby driving the rotation of the second bevel gear, thereby rotating the rotating rod thereof, and driving the rotation of the gear body, and the rotation of the gear body can drive the rotation of the threaded rod, thereby driving the lifting and lowering of the lifting ring, and the lifting and lowering of the lifting ring can cooperate with the second brush to clean the surface of the inner screen tube.

Description

Technical Field

[0001] The present invention relates to the field of sand control screen pipes, and in particular to a sand control screen pipe pup joint and a use method thereof. Background Art

[0002] During the exploitation of oil and gas wells, sand control technology will directly affect the quality and exploitation effect of oil and gas wells, and is also related to the life of oil and gas wells. Therefore, sand control technology is crucial in the exploitation process of oil and gas wells. Promoting the continuous development of sand control technology requires continuous innovation of sand control tools and their supporting processes. At present, there are many sand control methods for oil and gas wells. According to the sand control principle, they can be roughly divided into sand arch sand control, chemical sand control, thermal coking sand control, mechanical sand control, composite sand control and other sand control methods. In the mechanical sand control process, sand control screens are usually used as sand control tools.

[0003] In the prior art, the sand control screen comprises a base pipe and a filter sleeve. The filter sleeve is arranged on the outside of the base pipe and is welded to the base pipe through a plugging ring. The base pipe, the plugging ring and the filter sleeve are welded into a whole. When pumping oil, the sand control screen is first put into the oil well. The bottom end of the sand control screen is mostly a plugging structure and contacts the bottom inner wall of the oil well. Then the oil pipe is put into the sand control screen. When the surrounding formation fluid carries formation fine sand, mechanical impurities, clay mud and other materials through the sand control screen, the granular materials in the fluid are blocked and separated on the outside by the sand control screen, and the sand particles in the oil well output fluid are blocked by the sand control screen. The sand filter layer is blocked on the outside of the sand control screen pipe, so that the liquid in the oil pipe does not contain sand particles, thereby achieving sand control for the oil well. However, the sand control screen pipe in the prior art is connected by welding. When the filter sleeve is used for a long time and blockage occurs, since the sand control screen pipe is placed inside the oil well, the visibility inside the oil well is low and the blockage cannot be discovered in time. At the same time, the filtering mechanism cannot be cleaned in time during the operation, resulting in low permeability and affecting work efficiency. Therefore, we disclose a sand control screen pipe short section and a method for using it to meet people's needs. Summary of the invention

[0004] The purpose of the present application is to provide a sand screen short section and a method for using the same, so as to solve the problem that the sand screen in the prior art proposed in the above background technology is connected by welding. When the filter sleeve is used for a long time and blockage occurs, since the sand screen is placed inside the oil well, the visibility inside the oil well is low and the blockage cannot be discovered in time. At the same time, the filtering mechanism cannot be cleaned in time during the operation, resulting in low permeability and affecting the work efficiency.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a sand control screen tube pup joint, comprising an outer screen tube, an inner screen tube is installed on the inner wall of one side of the outer screen tube, a cleaning assembly is provided on the inner wall of the outer screen tube, an external thread is installed on the surface of one end of the outer screen tube, a second end head is detachably connected with the external thread, an avoidance hole is opened on one side of the second end head, an oil pipe connecting pipe is installed on the inner wall of one side of the outer screen tube, one end of the oil pipe connecting pipe is away from the inner wall of one side of the outer screen tube and is slidably connected to the inner wall of the avoidance hole, a clamping hoop is installed on one end of the oil pipe connecting pipe, a threaded pipe is installed on the end of the outer screen tube away from the second end head, the surface of the threaded pipe is detachably connected with the first end head, a driving assembly is provided on the inner wall of the first end head, and the cleaning assembly comprises a transverse cleaning unit and a longitudinal cleaning unit.

[0006] Preferably, the transverse cleaning unit includes a gear ring, a plurality of connecting rods are installed on the top side of the gear ring, an arc plate is installed at one end of the plurality of connecting rods away from the top side of the gear ring, first bristles are installed on the opposite sides of the plurality of arc plates, and a transverse cleaning limit unit is provided on the inner wall of the outer screen tube.

[0007] Preferably, the transverse cleaning limiting unit comprises a first circular groove opened on the inner wall of the outer screen tube, the inner wall of the first circular groove is slidably connected with a plurality of first arc blocks, and the opposite surfaces of the plurality of first arc blocks are respectively connected to the surface of the gear ring.

[0008] Preferably, a second circular groove is formed on the inner wall of the outer sieve tube, a plurality of second arc blocks are slidably connected to the inner wall of the second circular groove, and opposite surfaces of the plurality of second arc blocks are respectively connected to one side of the corresponding plurality of arc plates.

[0009] Preferably, the longitudinal cleaning unit comprises a lifting ring, the inner wall of the lifting ring is installed with second bristles, and the longitudinal cleaning unit is installed on the surface of the inner screen tube through a driving assembly.

[0010] Preferably, the driving assembly comprises a support plate mounted on the inner wall of the threaded tube, a motor is mounted on the top side of the support plate, and a first bevel gear is mounted on the output end of the motor.

[0011] Preferably, a rotating rod is installed on the bottom side of the outer sieve tube, a second bevel gear is sleeved and installed on the surface of the rotating rod, a threaded rod is installed on the top of the rotating rod, the first bevel gear and the second bevel gear are meshed, and the top of the rotating rod passes through the inner bottom wall of the outer sieve tube and is installed with a gear body.

[0012] Preferably, a limiting rod is installed on the inner bottom wall of the outer screen tube, and a threaded hole and a through hole are respectively opened on the top side of the lifting ring, the threaded hole is screwed to the surface of the threaded rod, and the through hole is slidably connected to the surface of the limiting rod.

[0013] Preferably, a first sieve hole is provided on the surface of the outer sieve tube, a second sieve hole is provided on the surface of the inner sieve tube, a guide groove and an oil inlet hole are provided on the surface of the oil pipe connecting tube, respectively, a plurality of support rods are installed on the surface of the oil pipe connecting tube, and the ends of the plurality of support rods away from the oil pipe connecting tube are connected to the inner wall of the inner sieve tube.

[0014] A method for using a sand control screen short section, the method comprising:

[0015] S1: First, the oil pipe is locked on the oil pipe connecting pipe through a clamp, and then the entire sand control screen is placed inside the oil well;

[0016] S2: When pumping oil, the first bevel gear can be driven to rotate by the motor, and then the second bevel gear can be driven to rotate, so that the rotating rod can rotate, and the gear body can be driven to rotate. The rotation of the gear body can drive the threaded rod to rotate, and then the lifting ring can be driven to rise and fall. The lifting ring can be lifted and lowered to cooperate with the second brush to clean the surface of the inner screen tube;

[0017] S3: The rotation of the gear body can drive the rotation of the gear ring, and the rotation of the gear ring can drive the movement of multiple connecting rods and the arc plate, thereby driving the bristles on the arc plate to brush the inner wall of the outer screen tube. The first circular groove and the second circular groove and the first arc block and the second arc block sliding on the inner wall can limit the gear ring and the arc plate, so that their movement is more stable;

[0018] S4: Through the above, when pumping oil, the mud and impurities inside the oil well can be filtered out to improve the oil pumping efficiency. Finally, the filtered crude oil enters the oil inlet through the guide groove and is then pumped out through the oil pipe connecting pipe.

[0019] In summary, the technical effects and advantages of the present invention are as follows:

[0020] 1. The present invention is provided with a cleaning component, which can be driven by the driving component to make the motor work, thereby driving the rotation of the first bevel gear, and then driving the rotation of the second bevel gear, so that the rotating rod rotates, and drives the rotation of the gear body. The rotation of the gear body can drive the rotation of the threaded rod, and then drive the lifting and lowering of the lifting ring. Through the lifting and lowering of the lifting ring, the surface of the inner screen tube can be cleaned in cooperation with the second brush.

[0021] 2. In the present invention, the rotation of the gear body can drive the rotation of the gear ring, and the rotation of the gear ring can drive the movement of multiple connecting rods and arc plates, thereby driving the bristles on the arc plates to brush the inner wall of the outer screen tube. The first circular groove and the second circular groove and the first arc block and the second arc block that slide on the inner wall can limit the gear ring and the arc plate, making their movement more stable.

[0022] 3. In the present invention, the protruding oil pipe connecting pipe and the clamping hoop can realize the convenient connection of the oil pipe and make the connection tighter. The threaded pipe, external thread and the first end and the second end can be disassembled to facilitate the maintenance of the drive assembly and the devices inside the outer screen pipe, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 is a cross-sectional view of the present invention;

[0026] Figure 3 It is a schematic diagram of the cleaning component structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the brush area structure in the present invention;

[0028] Figure 5 It is a schematic diagram of the enlarged structure of the upper and lower scrubbing areas in the present invention;

[0029] Figure 6 It is a schematic diagram of the oil pipe connecting pipe structure in the present invention.

[0030] In the figure: 1, outer screen tube; 2, first end; 3, second end; 4, first screen hole; 5, oil pipe connecting pipe; 6, clamping hoop; 7, external thread; 8, inner screen tube; 9, second screen hole; 10, first circular groove; 11, first arc block; 12, gear ring; 13, second circular groove; 14, second arc block; 15, connecting rod; 16, arc plate; 17, first bristle; 18, threaded pipe; 19, support plate; 20, motor; 21, first bevel gear; 22, second bevel gear; 23, rotating rod; 24, threaded rod; 25, gear body; 26, limit rod; 27, lifting ring; 28, second bristle; 29, guide groove; 30, support rod; 31, oil inlet hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example: Reference Figure 1-6 A sand control screen tube pup joint shown in the figure comprises an outer screen tube 1, an inner screen tube 8 is installed on the inner wall of one side of the outer screen tube 1, a cleaning assembly is arranged on the inner wall of the outer screen tube 1, an external thread 7 is installed on the surface of one end of the outer screen tube 1, a second end head 3 is detachably connected to the external thread 7 by thread, a avoidance hole is opened on one side of the second end head 3, an oil pipe connecting pipe 5 is installed on the inner wall of one side of the outer screen tube 1, one end of the oil pipe connecting pipe 5 away from the inner wall of one side of the outer screen tube 1 is slidably connected to the inner wall of the avoidance hole, a clamping hoop 6 is installed on one end of the oil pipe connecting pipe 5, a threaded pipe 18 is installed on the end of the outer screen tube 1 away from the second end head 3, a first end head 2 is detachably connected to the surface of the threaded pipe 18, a driving assembly is arranged on the inner wall of the first end head 2, and the cleaning assembly comprises a transverse cleaning unit and a longitudinal cleaning unit.

[0033] Based on the above structure, the protruding oil pipe connecting pipe 5 and the clamping hoop 6 can realize the convenient connection of the oil pipe and make the connection tighter. The threaded pipe 18, the external thread 7 and the first end 2 and the second end 3 can be disassembled to facilitate the maintenance of the drive assembly and the components inside the outer screen tube 1, thereby improving practicality. The outer screen tube 1 serves as the first filter layer of the filtering mechanism, and the inner screen tube 8 and the oil pipe connecting pipe 5 are respectively arranged inside the outer screen tube 1.

[0034] like Figure 2As shown, the lateral cleaning unit includes a gear ring 12, a plurality of connecting rods 15 are installed on the top side of the gear ring 12, and an arc plate 16 is installed at one end of the plurality of connecting rods 15 away from the top side of the gear ring 12, and first bristles 17 are installed on the opposite sides of the plurality of arc plates 16. A lateral cleaning limit unit is provided on the inner wall of the outer sieve tube 1, and the rotation of the gear ring 12 can drive the movement of the plurality of connecting rods 15 and the arc plate 16, thereby driving the bristles on the arc plate 16 to scrub the inner wall of the outer sieve tube 1, and the arc plate 16, Four connecting rods 15 are arranged, which are evenly and symmetrically distributed on the top side of the gear ring 12. The first brushes 17 installed on the four arc-shaped plates 16 can be used to repeatedly scrub the inner wall of the outer screen tube 1 to avoid clogging of the first sieve holes 4 opened on the outer screen tube 1, which affects the efficiency of oil extraction. The four groups of brushes can improve the scrubbing efficiency. Improving the scrubbing efficiency can minimize the amount of sediment adhering to the inner wall when the outer screen tube 1 is used inside the oil well, reduce the filtering strength of the inner screen tube 8, and reduce the probability of clogging of the inner screen tube 8.

[0035] like Figure 3 and 4 As shown, the lateral cleaning limiting unit includes a first circular groove 10 provided on the inner wall of the outer sieve tube 1, a plurality of first arc blocks 11 are slidably connected to the inner wall of the first circular groove 10, and the opposite surfaces of the plurality of first arc blocks 11 are respectively connected to the surface of the gear ring 12, and a second circular groove 13 is provided on the inner wall of the outer sieve tube 1, a plurality of second arc blocks 14 are slidably connected to the inner wall of the second circular groove 13, and the opposite surfaces of the plurality of second arc blocks 14 are respectively connected to one side of the corresponding plurality of arc plates 16, and the gear ring 12 and the arc plate 16 can be limited by the first circular groove 10 and the second circular groove 13 and the first arc blocks 11 and the second arc blocks 14 that slide on the inner wall, so that the movement thereof is more stable, and the second circular groove 13 and the second arc blocks 14 are provided, so that the arc plate 16 can still move stably when encountering strong resistance, and avoid damage.

[0036] like Figure 5 As shown, the longitudinal cleaning unit includes a lifting ring 27, and the inner wall of the lifting ring 27 is installed with a second brush 28. The longitudinal cleaning unit is installed on the surface of the inner screen tube 8 through a driving component. The lifting ring 27 is driven by the set driving component to drive the lifting and lowering of the lifting ring 27. Through the lifting and lowering of the lifting ring 27, the surface of the inner screen tube 8 can be cleaned in cooperation with the second brush 28. The second brush 28 fits with the surface of the inner screen tube 8 and can effectively brush the surface of the inner screen tube 8. The mud and sand adhered to the surface of the inner screen tube 8 enters the inside of the oil pipe connecting tube 5.

[0037] like Figure 3 and 6As shown, the driving assembly includes a support plate 19 installed on the inner wall of the threaded tube 18, a motor 20 is installed on the top side of the support plate 19, a first bevel gear 21 is installed on the output end of the motor 20, a rotating rod 23 is installed on the bottom side of the outer sieve tube 1, a second bevel gear 22 is installed on the surface of the rotating rod 23, a threaded rod 24 is installed on the top of the rotating rod 23, the first bevel gear 21 and the second bevel gear 22 are meshed, the top of the rotating rod 23 passes through the inner bottom wall of the outer sieve tube 1 and is installed with a gear body 25, a limiting rod 26 is installed on the inner bottom wall of the outer sieve tube 1, a threaded hole and a through hole are respectively opened on the top side of the lifting ring 27, the threaded hole is screwed with the surface of the threaded rod 24, the through hole is slidably connected with the surface of the limiting rod 26, and the surface of the outer sieve tube 1 is opened with a first The surface of the inner screen tube 8 is provided with a second screen hole 9, and the surface of the oil pipe connecting tube 5 is provided with a guide groove 29 and an oil inlet hole 31 respectively. A plurality of support rods 30 are installed on the surface of the oil pipe connecting tube 5, and one end of the plurality of support rods 30 away from the oil pipe connecting tube 5 is connected to the inner wall of the inner screen tube 8. The motor 20 can be driven by the set driving assembly, thereby driving the rotation of the first bevel gear 21, and then driving the rotation of the second bevel gear 22, so that the rotating rod 23 rotates, and drives the rotation of the gear body 25. Through the rotation of the gear body 25, the gear ring 12 is driven to move, so as to realize the operation of the horizontal cleaning unit and the longitudinal cleaning unit. The support rods 30 can prevent the inner screen tube 8 from being deformed due to excessive pressure.

[0038] A method for using a sand control screen short section, the method comprising:

[0039] S1: First, the oil pipe is locked on the oil pipe connecting pipe 5 through the clamping hoop 6, and then the entire sand control screen is placed inside the oil well;

[0040] S2: When pumping oil, the motor 20 drives the first bevel gear 21 to rotate, and then drives the second bevel gear 22 to rotate, so that the rotating rod 23 rotates, and drives the gear body 25 to rotate. The rotation of the gear body 25 drives the threaded rod 24 to rotate, and then drives the lifting ring 27 to rise and fall. The lifting ring 27 can cooperate with the second brush 28 to clean the surface of the inner screen tube 8;

[0041] S3: The rotation of the gear body 25 can drive the rotation of the gear ring 12, and the rotation of the gear ring 12 can drive the movement of multiple connecting rods 15 and the arc plate 16, thereby driving the bristles on the arc plate 16 to brush the inner wall of the outer screen tube 1. The first circular groove 10 and the second circular groove 13 and the first arc block 11 and the second arc block 14 sliding on the inner wall can limit the gear ring 12 and the arc plate 16, so that their movement is more stable;

[0042] S4: Through the above, when pumping oil, the mud and impurities inside the oil well can be filtered out to improve the oil pumping efficiency. Finally, the filtered crude oil enters the oil inlet through the guide groove 29 and is then pumped out through the oil pipe connecting pipe 5.

[0043] Working principle of the present invention:

[0044] S1: First, the oil pipe is locked on the oil pipe connecting pipe 5 through the clamping hoop 6, and then the entire sand control screen is placed inside the oil well;

[0045] S2: When pumping oil, the motor 20 drives the first bevel gear 21 to rotate, and then drives the second bevel gear 22 to rotate, so that the rotating rod 23 rotates, and drives the gear body 25 to rotate. The rotation of the gear body 25 drives the threaded rod 24 to rotate, and then drives the lifting ring 27 to rise and fall. The lifting ring 27 can cooperate with the second brush 28 to clean the surface of the inner screen tube 8;

[0046] S3: The rotation of the gear body 25 can drive the rotation of the gear ring 12, and the rotation of the gear ring 12 can drive the movement of multiple connecting rods 15 and the arc plate 16, thereby driving the bristles on the arc plate 16 to brush the inner wall of the outer screen tube 1. The first circular groove 10 and the second circular groove 13 and the first arc block 11 and the second arc block 14 sliding on the inner wall can limit the gear ring 12 and the arc plate 16, so that their movement is more stable;

[0047] S4: Through the above, when pumping oil, the mud and impurities inside the oil well can be filtered out to improve the oil pumping efficiency. Finally, the filtered crude oil enters the oil inlet through the guide groove 29 and is then pumped out through the oil pipe connecting pipe 5.

[0048] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sand control screen tube pup joint, comprising an outer screen tube (1), characterized in that: An inner screen tube (8) is installed on the inner wall of one side of the outer screen tube (1), a cleaning assembly is provided on the inner wall of the outer screen tube (1), an outer thread (7) is installed on the surface of one end of the outer screen tube (1), a second end head (3) is detachably connected to the outer thread (7), a avoidance hole is provided on one side of the second end head (3), an oil pipe connecting pipe (5) is installed on the inner wall of one side of the outer screen tube (1), an end of the oil pipe connecting pipe (5) away from the inner wall of one side of the outer screen tube (1) is slidably connected to the inner wall of the avoidance hole, a clamping hoop (6) is installed on one end of the oil pipe connecting pipe (5), a threaded pipe (18) is installed on the end of the outer screen tube (1) away from the second end head (3), a surface of the threaded pipe (18) is detachably connected to the first end head (2), a driving assembly is provided on the inner wall of the first end head (2), and the cleaning assembly comprises a transverse cleaning unit and a longitudinal cleaning unit; The transverse cleaning unit comprises a toothed ring (12), a plurality of connecting rods (15) are mounted on the top side of the toothed ring (12), an arc-shaped plate (16) is mounted on one end of the plurality of connecting rods (15) away from the top side of the toothed ring (12), first bristles (17) are mounted on opposite sides of the plurality of arc-shaped plates (16), and a transverse cleaning limit unit is arranged on the inner wall of the outer screen tube (1); The transverse cleaning limit unit comprises a first circular groove (10) formed on the inner wall of the outer screen tube (1), a plurality of first arc-shaped blocks (11) being slidably connected to the inner wall of the first circular groove (10), and opposite surfaces of the plurality of first arc-shaped blocks (11) are respectively connected to the surface of the gear ring (12); The inner wall of the outer screen tube (1) is provided with a second circular groove (13), the inner wall of the second circular groove (13) is slidably connected with a plurality of second arc-shaped blocks (14), and the opposite surfaces of the plurality of second arc-shaped blocks (14) are respectively connected to one side of a corresponding plurality of the arc-shaped plates (16); The longitudinal cleaning unit comprises a lifting ring (27), the inner wall of the lifting ring (27) being mounted with second bristles (28), and the longitudinal cleaning unit being mounted on the surface of the inner screen tube (8) via a driving assembly.

2. The sand control screen sub according to claim 1, characterized in that: The drive assembly comprises a support plate (19) mounted on the inner wall of the threaded tube (18), a motor (20) is mounted on the top side of the support plate (19), and a first bevel gear (21) is mounted on the output end of the motor (20).

3. The sand control screen subsection according to claim 2, characterized in that: A rotating rod (23) is installed on the bottom side of the outer sieve tube (1), a second bevel gear (22) is sleeved and installed on the surface of the rotating rod (23), a threaded rod (24) is installed on the top end of the rotating rod (23), the first bevel gear (21) and the second bevel gear (22) are meshed, and the top end of the rotating rod (23) passes through the inner bottom wall of the outer sieve tube (1) and is installed with a gear body (25).

4. The sand control screen subsection according to claim 3, characterized in that: A limiting rod (26) is installed on the inner bottom wall of the outer screen tube (1), and a threaded hole and a through hole are respectively opened on the top side of the lifting ring (27), the threaded hole is screwed to the surface of the threaded rod (24), and the through hole is slidably connected to the surface of the limiting rod (26).

5. The sand control screen subsection according to claim 1, characterized in that: The outer sieve tube (1) has a first sieve hole (4) on its surface, the inner sieve tube (8) has a second sieve hole (9) on its surface, the oil pipe connecting tube (5) has a guide groove (29) and an oil inlet hole (31) on its surface, and a plurality of support rods (30) are mounted on the surface of the oil pipe connecting tube (5), and the ends of the plurality of support rods (30) away from the oil pipe connecting tube (5) are connected to the inner wall of the inner sieve tube (8).

6. A method for using the sand control screen sub according to claim 4, characterized in that: The method includes: S1: First, the oil pipe is locked onto the oil pipe connecting pipe (5) through a clamping hoop (6), and then the entire sand control screen is placed inside the oil well; S2: When pumping oil, the motor (20) can be driven to drive the first bevel gear (21) to rotate, thereby driving the second bevel gear (22) to rotate, thereby causing the rotating rod (23) to rotate, and driving the gear body (25) to rotate. The rotation of the gear body (25) can drive the threaded rod (24) to rotate, thereby driving the lifting ring (27) to rise and fall. The lifting and falling of the lifting ring (27) can cooperate with the second brush (28) to clean the surface of the inner screen tube (8); S3: The gear ring (12) can be driven to rotate by the rotation of the gear body (25), and the gear ring (12) can be driven to move the plurality of connecting rods (15) and the arc plate (16), thereby driving the first bristles on the arc plate (16) to scrub the inner wall of the outer screen tube (1), and the gear ring (12) and the arc plate (16) can be limited by the first circular groove (10) and the second circular groove (13) and the first arc block (11) and the second arc block (14) sliding on the inner wall, so that the movement of the gear ring (12) and the arc plate (16) is more stable; S4: When pumping oil, the sediment impurities inside the oil well are filtered out to improve the pumping efficiency. Finally, the filtered crude oil enters the oil inlet through the guide groove (29) and is then pumped out through the oil pipe connecting pipe (5).

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