Downhole boosting device for oil and gas wells

Abstract

The present invention relates to a boosting device, specifically an oil and gas well underground boosting device, comprising: a pump barrel and a pump head arranged at one end of the pump barrel, a fixing frame arranged inside the pump head, and a conical filter screen fixedly arranged at one end of the fixing frame away from the pump barrel. The present invention provides a spirally detachable pump head at one end of the pump barrel, and provides a conical filter screen and a cleaning mechanism inside the pump head. When the oil and gas well underground boosting device is in operation, when the airflow enters the pump body, it can be filtered through the conical filter screen to reduce the dust content in the airflow, and the airflow impacts the driving fan in the cleaning mechanism to drive it, so that the spiral cleaning rod rotates on the conical filter screen, and the cleaning fluff can clean the auxiliary dust on the conical filter screen, so that the conical filter screen can maintain a good filtering effect when used for a long time, improve the boosting effect of the oil and gas well underground boosting device on natural gas underground, and increase the production of natural gas.

Description

Technical Field

[0001] The invention relates to a pressure boosting device, in particular to a downhole pressure boosting device for an oil and gas well. Background Art

[0002] Natural gas is a gas composed mainly of methane (CH 4 ) is a fossil fuel composed of gas, usually associated gas of petroleum and coal. It is a clean and efficient energy source, widely used in power generation, heating, industrial production and as automobile fuel. When natural gas is mined, a booster device is needed, generally a booster pump is used. The downhole booster device of oil and gas wells is used to increase the pressure of the downhole fluid in natural gas extraction, help to effectively extract natural gas and other fluids to the ground, and increase the amount of natural gas extracted.

[0003] When the current oil and gas well downhole boosting device is in use, due to the harsh downhole environment, when the oil and gas well downhole boosting device is in boosting operation, air flow will enter the downhole boosting device of the oil and gas well. The common downhole boosting device of the oil and gas well does not have a filtering self-cleaning mechanism inside, so after a lot of dust and impurities are attached to the filter screen, it is inconvenient to clean it, resulting in a reduction in the air flow flowing through the pump body, thereby reducing the boosting effect of the oil and gas well downhole boosting device and affecting the production of natural gas. Summary of the invention

[0004] The object of the present invention is to provide a downhole pressure boosting device for an oil and gas well to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A downhole booster device for an oil and gas well comprises: a pump barrel and a pump head arranged at one end of the pump barrel, a fixing frame being arranged inside the pump head, a conical filter being fixedly arranged at one end of the fixing frame away from the pump barrel, an edge of the conical filter close to the fixing frame being fixedly connected to the inner wall of the pump head, the conical filter being able to filter impurities in the air entering the inner wall of the pump barrel when the pump barrel is running and pressurizing, a cleaning mechanism being arranged on the conical filter, and the cleaning mechanism being able to clean impurities attached to the outer wall of the conical filter under the drive of the airflow when the pump barrel is running and pressurizing, a collecting ring being arranged at the outer wall portion of the pump head close to the fixing frame of the conical filter, the collecting ring being clamped on the outer wall of the pump head, and the collecting ring being used for the cleaning mechanism to collect dust and impurities cleaned by the conical filter.

[0007] The downhole boosting device for oil and gas wells as described above: a multi-stage axial compressor is arranged at one end of the cavity of the pump barrel, the multi-stage axial compressor is connected to a magnetic bearing, the other side of the magnetic bearing is connected to a high-speed permanent magnet synchronous motor, the other side of the high-speed permanent magnet synchronous motor is arranged with a downhole multi-parameter carrier sensor, and the inner wall of the pump barrel on one side of the downhole multi-parameter carrier sensor is arranged with a threaded inner wall.

[0008] The downhole boosting device for oil and gas wells as described above: an air inlet hole is provided in a ring-shaped outer wall of the pump head, and the air inlet hole is used for air circulation; a retaining ring is provided on the outer wall of the pump head on one side of the air inlet hole; four sewage outlets are provided in a ring-shaped outer wall of the pump head on one side of the retaining ring, and the sewage outlets are used for discharging impurities; an anti-slip seat is fixedly provided on the pump head on one side of the sewage outlet, and limiting grooves are symmetrically provided on the anti-slip seat; a threaded seat is fixedly connected to the anti-slip seat, and the threaded seat is threadedly connected to the threaded inner wall.

[0009] The downhole boosting device for oil and gas wells as described above: the fixed frame includes a center disk, support legs and a center axis, six support legs are fixedly arranged in a circular array on the center disk, one side of the center disk is fixedly connected to one end of the center axis, one end of the support leg is fixedly connected to the inner wall of the cavity of the pump head, and the other end of the center axis faces the air inlet.

[0010] The downhole boosting device for oil and gas wells as described above: a plurality of air flow holes are opened on the upper part of the conical filter screen, a blocking convex edge is fixedly connected to the outer wall on one side of the cone bottom of the conical filter screen, the blocking convex edge is used to block and collect dust, the blocking convex edge is fixedly connected to the inner wall of the cavity of the pump head, a mounting hole is opened at one end of the cone top of the conical filter screen, and the inner wall of the cone top of the conical filter screen is fixedly connected to one end of the central axis.

[0011] The downhole boosting device for oil and gas wells as described above: the cleaning mechanism includes a driving fan, a mounting bearing, a spiral cleaning rod, cleaning fluff and a cleaning brush, the rotating shaft of the driving fan is fixedly connected to the inner ring of the mounting bearing, the outer ring of the mounting bearing is embedded in the inner wall of the mounting hole, the outer wall of the rotating shaft of the driving fan is fixed to one end of the spiral cleaning rod, the spiral inner wall of the spiral cleaning rod is provided with cleaning fluff, and the other end of the spiral cleaning rod is provided with a cleaning brush at a position flush with the horizontal plane of the mounting bearing.

[0012] The downhole boosting device for oil and gas wells as described above: the inner wall of the collecting ring is provided with four sewage inlets in a circular array, the collecting ring is provided with a hollow cavity, a limiting block is symmetrically fixed on the inner wall of one side of the collecting ring, and the outer wall of the collecting ring is provided with a plurality of air flow holes at equal intervals.

[0013] As described above, in the downhole boosting device for oil and gas wells: the spiral cleaning rod rotates and fits against the outer wall of the conical filter screen, the cleaning fluff is arranged to abut against the outer wall of the conical filter screen, the cleaning brush abuts against the blocking convex edge, the spiral cleaning rod rotates so that the cleaning fluff cleans the impurities on the conical filter screen, and the cleaning brush rotates on the blocking convex edge so that the impurities are collected at the sewage outlet.

[0014] The downhole booster device for oil and gas wells as described above: one side of the collecting ring is arranged to abut against the retaining ring, the sewage inlet is connected to the sewage outlet, and the limiting block is engaged in the limiting groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] By arranging a spirally detachable pump head at one end of the pump barrel, and arranging a conical filter screen and a cleaning mechanism inside the pump head, when the downhole booster device of the oil and gas well is in operation, when the airflow enters the pump body, it can be filtered through the conical filter screen, thereby reducing the dust content in the airflow, and the airflow impacts the driving fan in the cleaning mechanism to drive it, so that the spiral cleaning rod rotates on the conical filter screen, and the cleaning fluff can clean the auxiliary dust on the conical filter screen, and the dust and impurities that fall down are collected by the collecting ring, so that the conical filter screen can maintain a good filtering effect during long-term use, thereby improving the boosting effect of the downhole booster device of the oil and gas well on natural gas underground, and increasing the production of natural gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a downhole pressurization device for oil and gas wells.

[0018] Figure 2 This is a schematic diagram of the structure inside the pump barrel in a downhole booster device for an oil and gas well.

[0019] Figure 3 It is a structural schematic diagram of the pump head mechanism in the downhole boosting device of an oil and gas well.

[0020] Figure 4 This is a schematic diagram of the structure inside the pump head in a downhole booster device for an oil and gas well.

[0021] Figure 5 This is a schematic diagram of the structure of the pump head in the downhole booster device of an oil and gas well.

[0022] Figure 6 It is a structural schematic diagram of the filtering mechanism in the downhole boosting device of the oil and gas well.

[0023] Figure 7 It is a schematic diagram of the structure of the fixing frame and the conical filter screen in the downhole boosting device of the oil and gas well.

[0024] Figure 8It is a structural schematic diagram of the cleaning mechanism in the downhole boosting device of the oil and gas well.

[0025] Fig. 9 This is a schematic diagram of the structure of a collecting ring in a downhole pressurization device of an oil and gas well.

[0026] In the figure: 1. pump barrel; 101. multi-stage axial flow compressor; 102. magnetic bearing; 103. high-speed permanent magnet synchronous motor; 104. downhole multi-parameter carrier sensor; 105. threaded inner wall; 2. pump head; 201. air inlet; 202. retaining ring; 203. sewage outlet; 204. anti-slip seat; 205. limiting groove; 206. threaded seat; 3. fixing frame; 301. center plate; 302. support foot; 303. center axis; 4. conical filter; 401. blocking convex edge; 402. mounting hole; 5. cleaning mechanism; 501. driving fan; 502. mounting bearing; 503. spiral cleaning rod; 504. cleaning fluff; 505. cleaning brush; 6. collecting ring; 601. sewage inlet; 602. limiting block; 603. air flow hole. DETAILED DESCRIPTION

[0027] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0028] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0029] In addition, in order to better illustrate the present application, numerous specific details are provided in the specific embodiments below. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, and elements well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0030] See also Figure 1 to Figure 9In an embodiment of the present invention, a downhole booster device for an oil and gas well comprises: a pump barrel 1 and a pump head 2 arranged at one end of the pump barrel 1, a fixing frame 3 is arranged inside the pump head 2, a conical filter screen 4 is fixedly arranged at one end of the fixing frame 3 away from the pump barrel 1, and the edge of the conical filter screen 4 close to the fixing frame 3 is fixedly connected to the inner wall of the pump head 2, and the conical filter screen 4 can filter impurities in the air entering the inner wall of the pump barrel 1 when the pump barrel 1 is running and pressurizing, and a cleaning mechanism 5 is arranged on the conical filter screen 4. When the pump barrel 1 is running and pressurizing, the cleaning mechanism 5 can clean the impurities attached to the outer wall of the conical filter screen 4 under the drive of the airflow, and the outer wall portion of the pump head 2 on the side of the fixing frame 3 of the conical filter screen 4 is provided with a collecting ring 6, and the collecting ring 6 is engaged with the outer wall of the pump head 2, and the collecting ring 6 is used for the cleaning mechanism 5 to collect dust and impurities cleaned by the conical filter screen 4.

[0031] In this embodiment, each component of the device is electrically connected to an external control device through a conductive line, and the operating state of the device is controlled by the external control device. When in use, the high-speed permanent magnet synchronous motor 103 is operated, so that the magnetic bearing 102 can drive the multi-stage axial flow compressor 101 to operate, so that the airflow can be sucked from the outside into the pump barrel 1 for pressurization and then discharged. The design of the downhole multi-parameter carrier sensor 104 can detect the downhole situation. During the overall operation, since the airflow is sucked in from one end of the air inlet 201, the airflow will hit the drive fan 501 at this time. The rotating shaft of the drive fan 501 is fixedly connected to the inner ring of the mounting bearing 502. Therefore, the drive fan 501 will be in the airflow at this time. The fan 501 rotates under the impact, driving the spiral cleaning rod 503 to rotate, and the airflow flowing into the pump barrel 1 can be filtered through the conical filter screen 4, so that the dust content in the airflow is reduced, and the filtered airflow will enter the pump barrel 1 for pressurization and discharge. A lot of dust and impurities will be attached to the conical filter screen 4. At this time, the spiral cleaning rod 503 will resist against the outer wall of the conical filter screen 4 and rotate, so that the dust on the outer wall of the conical filter screen 4 can be collected at the blocking convex edge 401. Since the cleaning brush 505 provided on the spiral cleaning rod 503 resists against the blocking convex edge 401, the dust and impurities on the blocking convex edge 401 can be scratched, and the spiral cleaning rod 503 The rotation causes dust and impurities to be scraped to the sewage outlet 203. Since the sewage outlet 203 is connected to the sewage inlet 601 and the air flow hole 603 is provided on the outer wall of the collecting ring 6, the air flow entering the collecting ring 6 can be discharged from the air flow hole 603, so that the air flow can be used. Therefore, under the scraping of the cleaning fluff 504 and the cleaning brush 505 on the spiral cleaning rod 503, the dust and impurities attached to the conical filter screen 4 due to filtration can be collected inside the collecting ring 6 when the booster pump is running, thereby improving the filtering effect of the conical filter screen 4. When the device is not in use and the internal mechanism of the pump head 2 needs to be cleaned, the threaded part 204 can be clamped with a tool at the anti-slip seat 204 to remove the dust and impurities attached to the conical filter screen 4 due to filtration. The seat 206 is threadedly removed from the threaded inner wall 105, so that the pump head 2 can be removed from one end of the pump barrel 1. Since the collecting ring 6 is engaged in the limiting groove 205 through the limiting block 602, after the pump head 2 is removed from the pump barrel 1, the collecting ring 6 can be pushed toward one end of the threaded seat 206, so that the collecting ring 6 can be easily removed from the pump head 2, and the dust and impurities collected inside the collecting ring 6 can be easily cleaned. After cleaning, it can be re-installed for reuse, ensuring easy cleaning. Through design, the self-cleaning effect of the conical filter 4 can be achieved, avoiding the conical filter 4 from being attached to the surface with more dust and impurities during long-term filtering use, affecting the amount of airflow entering in the later stage, and improving the extraction effect of underground natural gas.

[0032] As a further solution of the present invention, a multi-stage axial flow compressor 101 is provided at one end of the cavity of the pump barrel 1, and the multi-stage axial flow compressor 101 is connected to the magnetic bearing 102. The other side of the magnetic bearing 102 is connected to the high-speed permanent magnet synchronous motor 103. The other side of the high-speed permanent magnet synchronous motor 103 is provided with a downhole multi-parameter carrier sensor 104, and the inner wall of the pump barrel 1 on one side of the downhole multi-parameter carrier sensor 104 is provided with a threaded inner wall 105.

[0033] In this embodiment, when the high-speed permanent magnet synchronous motor 103 is running, the multi-stage axial flow compressor 101 can rotate through the connection of the magnetic bearing 102, so as to discharge the air after pressurization, and is used to pressurize the natural gas underground to increase the flow rate of the natural gas. Through the coordinated design of various mechanisms inside the pump barrel 1, the pressurization effect of the natural gas underground can be improved, the natural gas extraction volume can be increased, and the use requirements can be met.

[0034] As a further solution of the present invention, an air inlet hole 201 is provided in a ring shape on the outer wall of the pump head 2, and the air inlet hole 201 is used for air flow. A retaining ring 202 is provided on the outer wall of the pump head 2 on one side of the air inlet hole 201, and four sewage outlets 203 are provided in a ring shape on the outer wall of the pump head 2 on one side of the retaining ring 202, and the sewage outlets 203 are used for discharging impurities. An anti-slip seat 204 is fixedly provided on the pump head 2 on one side of the sewage outlet 203, and limiting grooves 205 are symmetrically provided on the anti-slip seat 204. A threaded seat 206 is fixedly connected to the anti-slip seat 204, and the threaded seat 206 is threadedly connected to the threaded inner wall 105.

[0035] In this embodiment, the design of the pump head 2 can meet the installation and use requirements of the filtering mechanism, so that the airflow entering the pump barrel 1 can be filtered, the impurities in the airflow can be reduced, the protection of the multi-stage axial flow compressor 101 can be improved, and the impurities in the airflow can be avoided from increasing, which will cause serious wear of the multi-stage axial flow compressor 101 and affect its service life, as well as the pressurization effect of the natural gas in the well.

[0036] As a further solution of the present invention, the fixed frame 3 includes a center disk 301, a support foot 302 and a center axis 303. Six support feet 302 are fixedly arranged in a circular array on the center disk 301. One side of the center disk 301 is fixedly connected to one end of the center axis 303. One end of the support foot 302 is fixedly connected to the inner wall of the cavity of the pump head 2, and the other end of the center axis 303 faces the air inlet 201.

[0037] In this embodiment, the fixing bracket 3 is designed to be fixedly connected to the inner wall of the pump head 2, so as to meet the installation and use effect of the conical filter screen 4 on the fixing bracket 3 and ensure the overall connectivity. At the same time, when the multi-stage axial flow compressor 101 is pressurized, the fixing bracket 3 will not affect the flow of air.

[0038] As a further solution of the present invention, a plurality of air flow holes are provided on the upper part of the conical filter screen 4, and a blocking convex edge 401 is fixedly connected to the outer wall on one side of the cone bottom of the conical filter screen 4, and the blocking convex edge 401 is used to block and collect dust, and the blocking convex edge 401 is fixedly connected to the inner wall of the cavity of the pump head 2, and a mounting hole 402 is provided at one end of the cone top of the conical filter screen 4, and the inner wall of the cone top of the conical filter screen 4 is fixedly connected to one end of the central axis 303.

[0039] In this embodiment, through the design of the conical filter mesh 4, the airflow entering the pump barrel 1 can be filtered, so that the impurity content in the airflow is reduced, and the wear of the impurities in the airflow on the blades of the multi-stage axial flow compressor 101 is reduced, thereby improving the use of the high-speed boosting device for pressurized extraction of natural gas underground.

[0040] As a further solution of the present invention, the cleaning mechanism 5 includes a driving fan 501, a mounting bearing 502, a spiral cleaning rod 503, cleaning fluff 504 and a cleaning brush 505. The rotating shaft of the driving fan 501 is fixedly connected to the inner ring of the mounting bearing 502, the outer ring of the mounting bearing 502 is embedded in the inner wall of the mounting hole 402, the outer wall of the rotating shaft of the driving fan 501 is fixedly set with one end of the spiral cleaning rod 503, the spiral inner wall of the spiral cleaning rod 503 is provided with cleaning fluff 504, and the spiral cleaning rod A cleaning brush 505 is provided at the other end of 503 and flush with the horizontal plane of the mounting bearing 502. The spiral cleaning rod 503 rotates to fit the outer wall of the conical filter screen 4. The cleaning fluff 504 is arranged to abut against the outer wall of the conical filter screen 4. The cleaning brush 505 abuts against the blocking convex edge 401. The spiral cleaning rod 503 rotates so that the cleaning fluff 504 cleans the impurities on the conical filter screen 4. The cleaning brush 505 rotates on the blocking convex edge 401 so that the impurities are collected at the sewage outlet 203.

[0041] In this embodiment, the fan 501 is driven to rotate due to the impact of the airflow, thereby driving the spiral cleaning rod 503 to rotate, so that the spiral cleaning rod 503 can rub and clean the outer wall of the conical filter 4. The design of the cleaning fluff 504 and the cleaning brush 505 can clean the dust and impurities attached to the outer wall of the conical filter 4, thereby improving the filtering effect of the conical filter 4 in long-term filtering use, maintaining a good filtering effect, and ensuring the long-term filtering use of the conical filter 4 without affecting the amount of air entering the pump barrel 1 due to the attachment of more dust and impurities.

[0042] As a further solution of the present invention, four sewage inlets 601 are provided in a circular array on the inner wall of the collecting ring 6. The collecting ring 6 is arranged as a hollow cavity. A limiting block 602 is symmetrically fixedly provided on the inner wall of one side of the collecting ring 6. A plurality of air flow holes 603 are provided on the outer wall of the collecting ring 6 at equal intervals. One side of the collecting ring 6 is arranged to abut against the retaining ring 202. The sewage inlet 601 is connected to the sewage outlet 203, and the limiting block 602 is engaged in the limiting groove 205.

[0043] In this embodiment, the air flow holes 603 opened on the collecting ring 6 can allow the air flow entering the collecting ring 6 to be discharged, and the dust and impurities that need to be collected will not be unable to enter the collecting ring 6 and be collected due to the collection ring 6 being filled with air flow. The design of the collecting ring 6 can collect the dust and impurities attached to the conical filter screen 4 after the cleaning mechanism 5 cleans them, so that the dust is collected inside the collecting ring 6, which can reduce the amount of air entering the pump barrel 1 due to the large amount of dust and impurities attached to the conical filter screen 4, thereby affecting the pressurization effect of the booster pump.

[0044] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and range of equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A downhole booster device for oil and gas wells, characterized in that: include: A pump barrel (1) and a pump head (2) arranged at one end of the pump barrel (1), wherein a fixing frame (3) is arranged inside the pump head (2), and a conical filter screen (4) is fixedly arranged at one end of the fixing frame (3) away from the pump barrel (1), and the edge of the conical filter screen (4) close to the fixing frame (3) is fixedly connected to the inner wall of the pump head (2), and the conical filter screen (4) can filter impurities in the air that enters the inner wall of the pump barrel (1) when the pump barrel (1) is running and pressurizing. 4) is provided with a cleaning mechanism (5), and when the pump barrel (1) is running and pressurizing, the cleaning mechanism (5) can clean impurities attached to the outer wall of the conical filter (4) under the drive of the airflow, and the conical filter (4) is provided with a collecting ring (6) at the outer wall of the pump head (2) on the side close to the fixing frame (3), and the collecting ring (6) is engaged with the outer wall of the pump head (2), and the collecting ring (6) is used for the cleaning mechanism (5) to collect dust and impurities cleaned by the conical filter (4); The conical filter (4) has a plurality of air flow holes formed in the upper portion thereof, a blocking convex edge (401) is fixedly connected to the outer wall of the conical bottom side of the conical filter (4), the blocking convex edge (401) is used to block and collect dust, the blocking convex edge (401) is fixedly connected to the inner wall of the cavity of the pump head (2), a mounting hole (402) is formed at one end of the conical top of the conical filter (4), and the inner wall of the conical top of the conical filter (4) is fixedly connected to one end of the central axis (303); The cleaning mechanism (5) comprises a driving fan (501), a mounting bearing (502), a spiral cleaning rod (503), cleaning fluff (504) and a cleaning brush (505); the rotating shaft of the driving fan (501) is fixedly connected to the inner ring of the mounting bearing (502); the outer ring of the mounting bearing (502) is embedded in the inner wall of the mounting hole (402); the outer wall of the rotating shaft of the driving fan (501) is fixedly arranged with one end of the spiral cleaning rod (503); the spiral inner wall of the spiral cleaning rod (503) is provided with cleaning fluff (504); and the other end of the spiral cleaning rod (503) is provided with a cleaning brush (505) at a position flush with the horizontal plane of the mounting bearing (502); The inner wall of the collection ring (6) is provided with four sewage inlets (601) in an annular array. The collection ring (6) is provided as a hollow cavity. A limit block (602) is symmetrically fixedly provided on the inner wall of one side of the collection ring (6). The outer wall of the collection ring (6) is provided with a plurality of air flow holes (603) at equal intervals. The spiral cleaning rod (503) rotates to fit the outer wall of the conical filter (4), the cleaning fluff (504) is arranged to abut against the outer wall of the conical filter (4), and the cleaning brush (505) abuts against the blocking convex edge (401). The spiral cleaning rod (503) rotates so that the cleaning fluff (504) cleans impurities on the conical filter (4), and the cleaning brush (505) rotates on the blocking convex edge (401) so that the impurities are collected at the sewage outlet (203).

2. A downhole boosting device for oil and gas wells according to claim 1, characterized in that: A multi-stage axial compressor (101) is arranged at one end of the cavity of the pump barrel (1), the multi-stage axial compressor (101) is connected to a magnetic bearing (102), the other side of the magnetic bearing (102) is connected to a high-speed permanent magnet synchronous motor (103), the other side of the high-speed permanent magnet synchronous motor (103) is arranged with a downhole multi-parameter carrier sensor (104), and the inner wall of the pump barrel (1) on one side of the downhole multi-parameter carrier sensor (104) is arranged with a threaded inner wall (105).

3. The downhole boosting device for oil and gas wells according to claim 1, characterized in that: An air inlet (201) is provided in the outer wall of the pump head (2) in the shape of a ring. The air inlet (201) is used for air circulation. A retaining ring (202) is provided on the outer wall of the pump head (2) on one side of the air inlet (201). Four sewage outlets (203) are provided in the outer wall of the pump head (2) on one side of the retaining ring (202). The sewage outlets (203) are used for discharging impurities. An anti-slip seat (204) is fixedly provided on the pump head (2) on one side of the sewage outlet (203). Limiting grooves (205) are symmetrically provided on the anti-slip seat (204). A threaded seat (206) is fixedly connected to the anti-slip seat (204). The threaded seat (206) is threadedly connected to the threaded inner wall (105).

4. The downhole boosting device for oil and gas wells according to claim 1, characterized in that: The fixing frame (3) comprises a central disk (301), supporting feet (302) and a central shaft (303); six supporting feet (302) are fixedly arranged in an annular array on the central disk (301); one side of the central disk (301) is fixedly connected to one end of the central shaft (303); one end of the supporting feet (302) is fixedly connected to the inner wall of the cavity of the pump head (2); and the other end of the central shaft (303) faces the air inlet hole (201).

5. The downhole boosting device for oil and gas wells according to claim 1, characterized in that: One side of the collecting ring (6) is arranged to abut against the retaining ring (202), the sewage inlet (601) is arranged to communicate with the sewage outlet (203), and the limiting block (602) is engaged in the limiting groove (205).

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