An oil well water cut measuring instrument

Abstract

This invention provides an oil well water cut measuring instrument, comprising a gas-liquid separator, a gas flow pipe, a liquid flow pipe, a horizontal separator, a filter medium pipe, a gas metering pipe, a connecting pipe, an outlet pipe end, and a water cut meter. The upper end of the gas-liquid separator is connected to the gas flow pipe, and the lower end of the gas-liquid separator is connected to the liquid flow pipe. One end of the liquid flow pipe is connected to the horizontal separator, one end of the gas flow pipe is connected to the filter medium pipe, and one end of the filter medium pipe is connected to the gas metering pipe. The gas metering pipe and the liquid metering pipe are respectively connected to the outlet pipe end. Both ends of the connecting pipe are respectively connected to the filter medium pipe and the liquid metering pipe. A water cut meter is installed at the end of the liquid metering pipe furthest from the horizontal separator. This invention eliminates the need for multiple manual sampling and testing at the wellhead, reducing labor intensity, safety hazards, and testing costs. It enables real-time monitoring of oil well water cut, improving the digitalization and precision of oilfield production management.

Description

Technical Field

[0001] This invention belongs to the field of monitoring the water content of oil wells during oil production, and in particular relates to an oil well water content measuring instrument. Background Technology

[0002] Water cut in oil wells is an important indicator for oilfield management, analysis, and evaluation. It can be used to measure oil and fluid production, assess oil well output, and predict well lifespan. It is generally obtained through manual sampling and testing, which is time-consuming, costly, lacks real-time accuracy, and is labor-intensive. Currently, most oilfields in China have entered the "dual-high" extraction stage of high water cut and high recovery rate. The water cut of some oil wells has risen to the point of approaching the economic extraction limit. In order to understand and grasp the production status of the oil production process in a timely manner so as to guide the implementation of subsequent production plans and ensure that oil wells are always in the best production state, and ultimately improve the efficiency of oil well extraction and crude oil recovery, the measurement of water cut in oil wells has become extremely urgent.

[0003] In the authorized Chinese utility model patent "Announcement No.: CN210005483U, Title: A Water Cut Measuring Device for Oil Wells", the separation of gas and liquid is achieved by repeatedly attaching and separating the float and the sealing surface. At the same time, an ultrasonic measuring probe is used to measure the water cut. However, the above application requires multiple manual sampling and testing at the wellhead, which is labor-intensive, has low monitoring speed and efficiency, poses significant safety hazards due to multiple wellhead sampling, and makes it difficult to monitor the water cut of oil wells in real time. In addition, the method of separating gas and liquid by attaching the float and the sealing surface has poor separation effect and requires repeated attachment and separation, which affects the separation efficiency and leads to a large error in water cut detection.

[0004] Therefore, there is an urgent need for a measuring instrument with a simple structure, high stability, and the ability to monitor the water content of oil well production fluid in real time. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of low gas-liquid separation efficiency, poor effect and difficulty in real-time and accurate monitoring of oil well water cut in the prior art, and to provide an oil well water cut measuring instrument.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] This invention provides an oil well water cut measuring instrument, including a gas-liquid separator. The upper end of the gas-liquid separator is connected to a gas flow pipe, and the lower end of the gas-liquid separator is connected to a liquid flow pipe. The gas-liquid separator is used to separate the gas and liquid phases of the oil-gas-water three-phase mixture.

[0008] A horizontal separator, wherein one end of the liquid flow pipe is connected to the horizontal separator, the horizontal separator is used to further separate gas and liquid, and one end of the horizontal separator is connected to a liquid metering pipeline.

[0009] A filter medium tube, one end of the gas flow tube is connected to the filter medium tube, and one end of the filter medium tube is connected to a gas metering tube.

[0010] At the outlet pipe end, the gas metering pipe and the liquid metering pipe are respectively connected to the outlet pipe end;

[0011] A connecting pipe, the two ends of which are respectively connected to a filter medium pipe and a liquid metering line;

[0012] A moisture content meter is installed at the end of the liquid metering pipeline furthest from the horizontal separator.

[0013] In this technical solution, a gas-liquid separator and a horizontal separator are used to separate gas and liquid. The horizontal separator is equipped with electrodes. Under the action of gravity and electrostatic attraction, the efficiency of traditional gravity settling is accelerated, and the gas-liquid separation is accelerated. After standing for a period of time, the liquid is connected to the liquid metering pipeline, which realizes the relatively complete separation of gas and liquid, enhances the separation effect, improves the separation efficiency, thereby reducing the error of water cut detection and improving the accuracy of water cut detection in oil wells.

[0014] Furthermore, the entire process eliminates the need for multiple manual sampling and testing at the wellhead, reducing labor intensity, safety hazards, and testing costs. It enables real-time monitoring of the water content of oil well production fluids, thereby improving the digitalization and precision of oilfield production management.

[0015] Preferably, a first liquid flow meter is provided at one end of the connecting pipe near the filter medium pipe;

[0016] A second liquid flow meter is installed at one end of the liquid metering pipeline near the horizontal separator.

[0017] In this technical solution, the moisture content can be detected using a moisture meter, a first liquid flow meter, and a second liquid flow meter.

[0018] Preferably, the horizontal separator is a separator with electrodes.

[0019] In this technical solution, since the horizontal separator is equipped with electrodes, the difference in conductivity between the gas and the liquid causes the liquid to settle downwards more quickly, thus accelerating the efficiency of traditional gravity settling.

[0020] Preferably, the gas-liquid separator includes a fixed outer shell, and an inner cylinder is provided in the inner cavity of the fixed outer shell;

[0021] The inner wall of the fixed outer shell is connected to multiple fixed spiral plates;

[0022] The inner cylinder has multiple staggered inner spiral blades connected to its inner wall, and multiple outer spiral blades connected to its outer wall. The top of each outer spiral blade is connected to an impact separation net. The inner cylinder is rotated by a rotating assembly.

[0023] A lower filter screen is provided below the inner cylinder, and the lower filter screen is connected to the inner wall of the fixed outer shell;

[0024] An upper filter screen is provided above the inner spiral blades, and the upper filter screen is connected to the inner wall of the inner cylinder.

[0025] In this technical solution, a gas-liquid separator is used to perform preliminary separation of gas and liquid.

[0026] Preferably, the inner cylinder is connected to the inner wall of the fixed outer shell via a rotating assembly, the rotating assembly including an anti-detachment ring connected to the top of the inner cylinder;

[0027] The anti-detachment ring is slidably connected to the inner side of the fixed track, and the fixed track is connected to the inner wall of the top surface of the fixed housing;

[0028] A gear ring is connected to the outer side of the inner cylinder, and a rotating gear is meshed with the side of the gear ring;

[0029] The rotating gear is connected to the output end of the drive source, which is mounted on the top of the fixed housing.

[0030] In this technical solution, the rotating component can drive the inner cylinder to rotate, which can disperse and impact the gas and liquid, thereby improving the effect and efficiency of gas-liquid separation.

[0031] Preferably, a cleaning component is provided at the lower filter screen, the cleaning component including a drive shaft, the surface of the drive shaft being rotatably connected to the lower filter screen;

[0032] The upper end of the drive shaft is connected to an upper connecting strip, which is connected to the bottom of the inner cylinder. The lower end of the drive shaft is rotatably connected to a lower connecting strip, which is connected to the bottom of the inner cavity of the fixed outer shell.

[0033] Multiple mounting plates are connected to both the upper and lower ends of the drive shaft. A cleaning brush is connected to the side of the mounting plate near the lower filter screen, and the cleaning brush is in contact with the lower filter screen.

[0034] In this technical solution, the lower filter screen can be cleaned using a cleaning component.

[0035] Preferably, a feed inlet is installed on one side of the fixed housing.

[0036] In this technical solution, the material in the oil well can be added into the gas-liquid separator for gas-liquid separation using the feed inlet.

[0037] Preferably, the horizontal separator includes a separation shell and a separation housing, with both ends of the separation housing connected to a liquid flow pipe and a liquid metering pipeline, respectively;

[0038] Electrode plates are connected to the inner wall of the separation shell.

[0039] In this technical solution, a horizontal separator can be used to further separate gas and liquid, resulting in better gas-liquid separation.

[0040] Preferably, a distribution pipe is provided in the inner cavity of the separation shell, and one end of the distribution pipe is connected to one end of the liquid flow pipe.

[0041] In this technical solution, the liquid can be evenly dispersed in the inner cavity of the separation shell by using a distribution pipeline, so as to facilitate the separation of gas and liquid.

[0042] Preferably, the distribution pipeline is serpentine in shape, and the surface of the distribution pipeline has multiple spray holes.

[0043] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0044] The positive and progressive effects of this invention are as follows:

[0045] This invention utilizes a gas-liquid separator and a horizontal separator to separate gas and liquid. The horizontal separator is equipped with electrodes, which, under the influence of gravity and electrostatic attraction, accelerate the efficiency of traditional gravity settling and speed up gas-liquid separation. After standing for a period of time, the liquid is connected to the liquid metering pipeline, achieving relatively complete gas-liquid separation, enhancing the gas-liquid separation effect, improving the gas-liquid separation efficiency, thereby reducing the error in water content detection and improving the accuracy of water content detection in oil wells.

[0046] At the same time, a filter media tube was set up to take into account the small-diameter liquid particles carried in the gas after the first gas-liquid separation, which improved the accuracy of the calculated water content.

[0047] Furthermore, the entire process eliminates the need for multiple manual sampling and testing at the wellhead, reducing labor intensity, safety hazards, and testing costs. It enables real-time monitoring of the water content of oil well production fluids, thereby improving the digitalization and precision of oilfield production management. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the structure of the oil well water cut measuring instrument according to an embodiment of the present invention.

[0049] Figure 2 for Figure 1 The diagram shows the overall internal structure of the oil well water cut measuring instrument.

[0050] Figure 3 for Figure 1 The diagram shows the internal structure of the gas-liquid separator in the oil well water cut measuring instrument.

[0051] Figure 4 for Figure 3 The diagram shows a partially enlarged view of point A of the oil well water cut measuring instrument.

[0052] Figure 5 for Figure 3 The diagram shows a partially enlarged view of point B on the oil well water cut measuring instrument.

[0053] Figure 6 for Figure 1 The diagram shows the internal structure of the horizontal separator of the oil well water cut measuring instrument.

[0054] Explanation of reference numerals in the attached figures

[0055] 1. Gas-liquid separator;

[0056] 2. Gas flow pipe;

[0057] 3. Liquid flow pipe;

[0058] 4. Horizontal separator;

[0059] 5. Liquid metering pipelines;

[0060] 6. Filter media tube;

[0061] 7. Gas metering tube;

[0062] 8. Outlet pipe end;

[0063] 9. Connecting pipe;

[0064] 10. Moisture meter;

[0065] 11. First liquid flow meter;

[0066] 12. Second liquid flow meter;

[0067] 13. Secure the outer casing;

[0068] 14. Inner cylinder;

[0069] 15. Feed inlet;

[0070] 16. Fix the spiral blade;

[0071] 17. Inner spiral plate;

[0072] 18. External spiral plate;

[0073] 19. Impact separation net;

[0074] 20. Lower the filter screen;

[0075] 21. Install the filter screen;

[0076] 22. Rotating assembly; 221. Anti-detachment ring; 222. Fixed track; 223. Gear ring; 224. Rotating gear; 225. Drive source;

[0077] 23. Cleaning assembly; 231. Drive shaft; 232. Upper connecting strip; 233. Lower connecting strip; 234. Mounting plate; 235. Cleaning brush;

[0078] 24. Separate the outer shell;

[0079] 25. Electrode plates;

[0080] 26. Distribution piping. Detailed Implementation

[0081] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0082] Figures 1 to 6 The diagram shown is a structural schematic of an embodiment of the oil well water cut measuring instrument of the present invention. The oil well water cut measuring instrument includes a gas-liquid separator 1, with a gas flow pipe 2 connected to the upper end of the gas-liquid separator 1 and a liquid flow pipe 3 connected to the lower end of the gas-liquid separator 1. The gas-liquid separator 1 is used to separate the gas and liquid phases of the three-phase mixture of oil, gas, and water.

[0083] A horizontal separator 4 is provided, with one end of the liquid flow pipe 3 connected to the horizontal separator 4. The horizontal separator 4 is used to further separate the gas and liquid. One end of the horizontal separator 4 is connected to a liquid metering pipeline 5.

[0084] The filter medium tube 6 is connected to one end of the gas flow tube 2, and the filter medium tube 6 is connected to one end of the gas metering tube 7.

[0085] The filter media tube 6 is a filter media frame made of stainless steel wire mesh, which takes into account the small-diameter liquid particles carried in the gas after the first gas-liquid separation, thus improving the accuracy of the calculated water content.

[0086] The gas metering pipe 7 and the liquid metering pipe 5 are respectively connected to the outlet pipe end 8;

[0087] A connecting pipe 9, the two ends of which are respectively connected to a filter medium pipe 6 and a liquid metering line 5;

[0088] A moisture meter 10 is installed at the end of the liquid metering pipeline 5 away from the horizontal separator 4.

[0089] In this technical solution, gas and liquid can be separated by gas-liquid separator 1 and horizontal separator 4. The horizontal separator 4 is equipped with electrodes. Under the action of gravity and electrostatic attraction, the efficiency of traditional gravity settling is accelerated, and gas-liquid separation is accelerated. After standing for a period of time, the liquid is connected to the liquid metering pipeline 5, which realizes the relatively complete separation of gas and liquid, enhances the separation effect of gas and liquid, improves the separation efficiency of gas and liquid, thereby reducing the error of water cut detection and improving the accuracy of water cut detection in oil wells.

[0090] Furthermore, the entire process eliminates the need for multiple manual sampling and testing at the wellhead, reducing labor intensity, safety hazards, and testing costs. It enables real-time monitoring of the water content of oil well production fluids, thereby improving the digitalization and precision of oilfield production management.

[0091] A first liquid flow meter 11 is provided at one end of the connecting pipe 9 near the filter medium pipe 6;

[0092] A second liquid flow meter 12 is installed at one end of the liquid metering pipeline 5 near the horizontal separator 4.

[0093] In this technical solution, the moisture content can be detected using a moisture meter 10, a first liquid flow meter 11, and a second liquid flow meter 12.

[0094] The horizontal separator 4 is a separator with electrodes.

[0095] In this technical solution, since the horizontal separator 4 is equipped with electrodes, the difference in conductivity between the gas and the liquid causes the liquid to settle downwards at an accelerated rate, thus speeding up the efficiency of traditional gravity settling.

[0096] When in use, the three-phase mixture of oil, gas and water in the oil well enters the gas-liquid separator 1 tangentially. The gas is transformed into a rotating gas flow through the gas-liquid separator 1 and rises to the top of the separator. The liquid droplets are ejected at a certain angle under the action of inertia and flow into the overflow tank, thus achieving the initial separation of gas and liquid.

[0097] The gas flowing out from the top of the gas-liquid separator 1 enters the filter medium pipe 6 through the gas flow pipe 2. After being filtered by the filter medium pipe 6, it enters the gas metering pipe 7. The 0.1-10μm small particles separated by the filter medium pipe 6 enter the connecting pipe 9 and then enter the liquid metering line 5.

[0098] The liquid separated by the gas-liquid separator 1 enters the horizontal separator 4 through the liquid flow pipe 3. In the horizontal separator 4, the gas-liquid separation is accelerated under the action of gravity and electrostatic attraction. After standing for a period of time, the liquid is connected to the liquid metering pipeline 5, thus achieving relatively complete separation of gas and liquid.

[0099] Using a water content meter 10, a first liquid flow meter 11, and a second liquid flow meter 12, the water content is determined by the sensor's sensitivity to the dielectric constant of the crude oil with water content. The change in water content measured by the admittance sensor probe is converted into a change in the probe's admittance, causing the admittance sensor to output an electrical signal that corresponds to the change in water content, thereby measuring the water content of the crude oil.

[0100] The gas-liquid separator 1 includes a fixed outer shell 13, and an inner cylinder 14 is provided in the inner cavity of the fixed outer shell 13.

[0101] The inner wall of the fixed outer shell 13 is connected with a plurality of fixed spiral plates 16;

[0102] The inner wall of the inner cylinder 14 is connected with a plurality of staggered inner spiral blades 17, and the outer wall of the inner cylinder 14 is connected with a plurality of outer spiral blades 18, and the top of the outer spiral blades 18 is connected with an impact separation net 19.

[0103] A lower filter screen 20 is provided below the inner cylinder 14, and the lower filter screen 20 is connected to the inner wall of the fixed outer shell 13;

[0104] An upper filter screen 21 is provided above the inner spiral blade 17, and the upper filter screen 21 is connected to the inner wall of the inner cylinder 14.

[0105] In this technical solution, a gas-liquid separator 1 is used to perform preliminary separation of gas and liquid.

[0106] The three-phase mixture of oil, gas and water in the oil well enters the fixed outer shell 13 through the feed pipe 15, and then enters the inner cylinder 14 along the fixed spiral blade 16 and the outer spiral blade 18. Then the gas enters the upper filter screen 21 through the inner spiral blade 17, and finally enters the gas flow pipe 2 after being filtered by the upper filter screen 21. The liquid enters the liquid flow pipe 3 after being filtered by the lower filter screen 20, thus realizing the separation of gas and liquid.

[0107] The inner cylinder 14 is connected to the inner wall of the fixed outer shell 13 via a rotating assembly 22. The rotating assembly 22 includes an anti-detachment ring 221, which is connected to the top of the inner cylinder 14.

[0108] The anti-detachment ring 221 is slidably connected to the inner side of the fixed track 222, and the fixed track 222 is connected to the inner wall of the top surface of the fixed housing 13;

[0109] The outer side of the inner cylinder 14 is connected to a gear ring 223, and a rotating gear 224 is meshed with the side of the gear ring 223.

[0110] The rotating gear 224 is connected to the output end of the drive source 225, which is mounted on the top of the fixed housing 13.

[0111] In this technical solution, the rotating component 22 can drive the inner cylinder 14 to rotate, which can disperse and impact the gas and liquid, thereby improving the effect of gas-liquid separation and increasing the efficiency of gas-liquid separation.

[0112] In use, the drive source 225 drives the rotating gear 224 to rotate, which in turn drives the gear ring 223 to rotate, and then drives the inner cylinder 14 to rotate. At this time, the anti-detachment ring 221 can move within the fixed track 222. When the inner cylinder 14 rotates, it can drive the outer spiral blade 18, the impact separation net 19 and the inner spiral blade 17 to rotate, so that the inner spiral blade 17, the outer spiral blade 18 and the impact separation net 19 can contact the oil-gas-water three-phase mixture more quickly, thereby improving the gas-liquid separation efficiency.

[0113] A cleaning component 23 is provided at the lower filter screen 20. The cleaning component 23 includes a drive shaft 231, and the surface of the drive shaft 231 is rotatably connected to the lower filter screen 20.

[0114] The upper end of the drive shaft 231 is connected to an upper connecting strip 232, which is connected to the bottom of the inner cylinder 14. The lower end of the drive shaft 231 is rotatably connected to a lower connecting strip 233, which is connected to the bottom of the inner cavity of the fixed outer shell 13.

[0115] Multiple mounting plates 234 are connected to both the upper and lower sides of the drive shaft 231. A cleaning brush 235 is connected to the side of the mounting plate 234 near the lower filter screen 20, and the cleaning brush 235 is in contact with the lower filter screen 20.

[0116] In this technical solution, the lower filter screen 20 can be cleaned using the cleaning component 23.

[0117] When the inner cylinder 14 rotates, it can drive the upper connecting strip 232 to rotate, thereby driving the mounting plate 234 and the cleaning brush 235 to rotate. The cleaning brush 235 is used to clean the lower filter screen 20 to prevent the lower filter screen 20 from becoming clogged and affecting its use.

[0118] A feed inlet 15 is installed on one side of the fixed housing 13.

[0119] In this technical solution, the material in the oil well can be added into the gas-liquid separator 1 for gas-liquid separation using the feed inlet 15.

[0120] The horizontal separator 4 includes a separation shell 24 and a separation shell 24, with both ends of the separation shell 24 connected to the liquid flow pipe 3 and the liquid metering line 5, respectively.

[0121] Electrode plates 25 are connected to the inner wall of the separation shell 24.

[0122] In this technical solution, the horizontal separator 4 can be used to further separate the gas and liquid, making the gas-liquid separation effect better.

[0123] A distribution pipe 26 is provided in the inner cavity of the separation shell 24, and one end of the distribution pipe 26 is connected to one end of the liquid flow pipe 3.

[0124] In this technical solution, the distribution pipe 26 can be used to make the liquid evenly dispersed in the inner cavity of the separation shell 24, so as to facilitate the separation of gas and liquid.

[0125] The distribution pipe 26 is distributed in a serpentine pattern, and multiple ejection holes are opened on the surface of the distribution pipe 26.

[0126] During use, the liquid separated by the gas-liquid separator 1 enters the distribution pipe 26 and is then evenly sprayed into the inner cavity of the separator shell 24. At this time, under the action of the electrode plate 25 and gravity, the difference in conductivity between the gas and the liquid causes the liquid to sink downwards at an accelerated rate, thus speeding up the efficiency of traditional gravity sedimentation.

[0127] The drive source 225 is a motor or other device that can output rotational kinetic energy.

[0128] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A water cut meter for oil wells, characterized in that: Including gas-liquid separator (1), the upper end of gas-liquid separator (1) is connected with gas flow pipe (2), the lower end of gas-liquid separator (1) is connected with liquid flow pipe (3), and gas-liquid separator (1) is used for separating gas-liquid of oil-gas-water three-phase mixture liquid; Horizontal separator (4), one end of liquid flow pipe (3) is connected with horizontal separator (4), horizontal separator (4) is used for further separating gas-liquid, and one end of horizontal separator (4) is connected with liquid path metering pipeline (5); Filter medium pipe (6), one end of gas flow pipe (2) is connected with filter medium pipe (6), and one end of filter medium pipe (6) is connected with gas path metering pipe (7); Outlet pipe end (8), gas path metering pipe (7) and liquid path metering pipeline (5) are connected with outlet pipe end (8) respectively; Communication pipe (9), both ends of communication pipe (9) are connected with filter medium pipe (6) and liquid path metering pipeline (5) respectively; The end of liquid path metering pipeline (5) away from horizontal separator (4) is provided with water content meter (10); The gas-liquid separator (1) includes a fixed shell (13), and an inner cylinder body (14) is arranged in the inner cavity of the fixed shell (13); The fixed shell (13) is connected with a plurality of fixed spiral blades (16) on the inner wall; The inner cylinder body (14) is connected with a plurality of inner spiral blades (17) staggered distributed on the inner wall, and the outer wall of the inner cylinder body (14) is connected with a plurality of outer spiral blades (18), and the top of the outer spiral blade (18) is connected with an impingement separation net (19); the inner cylinder body (14) is driven to rotate by a rotating assembly; The lower filter screen (20) is arranged below the inner cylinder body (14), and the lower filter screen (20) is connected to the inner wall of the fixed shell (13); The upper filter screen (21) is arranged above the inner spiral blade (17), and the upper filter screen (21) is connected to the inner wall of the inner cylinder body (14); The horizontal separator (4) includes a separation shell (24), and the separation shell (24) is connected with the liquid flow pipe (3) and the liquid path metering pipeline (5) at both ends respectively; The inner wall of the separation shell (24) is connected with an electrode plate (25).

2. The oil well water cut meter of claim 1, wherein: The end of the communication pipe (9) close to the filter medium pipe (6) is provided with a first liquid flow meter (11); The end of the liquid path metering pipeline (5) close to the horizontal separator (4) is provided with a second liquid flow meter (12).

3. The oil well water cut meter of claim 1, wherein: The inner cylinder body (14) is connected to the inner wall of the fixed shell (13) through a rotating assembly (22), and the rotating assembly (22) includes an anti-off ring (221), and the anti-off ring (221) is connected to the top end of the inner cylinder body (14); The anti-off ring (221) is slidably connected with the inner side of a fixed track (222), and the fixed track (222) is connected to the inner wall of the top surface of the fixed shell (13); The outer side of the inner cylinder body (14) is connected with a gear ring (223), and the side of the gear ring (223) is engagedly connected with a rotating gear (224); The rotating gear (224) is connected with the output end of a driving source (225), and the driving source (225) is installed on the top of the fixed shell (13).

4. The oil well water cut meter of claim 1, wherein: The lower filter screen (20) is provided with a cleaning assembly (23), the cleaning assembly (23) comprises a transmission shaft (231), the transmission shaft (231) is rotatably connected with the lower filter screen (20); The upper end of the transmission shaft (231) is connected with an upper connecting strip (232), the upper connecting strip (232) is connected with the bottom of the inner cylinder (14), the lower end of the transmission shaft (231) is rotatably connected with a lower connecting strip (233), the lower connecting strip (233) is connected with the bottom of the inner cavity of the fixed shell (13); The upper and lower ends of the transmission shaft (231) are connected with a plurality of mounting plates (234), one side of the mounting plate (234) close to the lower filter screen (20) is connected with a cleaning brush (235), the cleaning brush (235) is in contact with the lower filter screen (20).

5. The oil well water cut meter of claim 1, wherein: The fixed shell (13) is provided with a feeding pipe (15) on one side.

6. The oil well water cut meter of claim 1, wherein: The distribution pipeline (26) is provided in the inner cavity of the separation shell (24), and one end of the distribution pipeline (26) is connected with one end of the liquid flow pipe (3).

7. The oil well water cut meter of claim 6, wherein: The distribution pipeline (26) is in a serpentine shape, and a plurality of spray holes are formed in the surface of the distribution pipeline (26).

Images