Downhole wireless energy transmission electric control intelligent flow regulating device

Abstract

This invention relates to an intelligent downhole wireless power transmission and electronic control flow regulation device, comprising a working cylinder and a core cylinder. The lower end of the working cylinder has a radial water nozzle flow channel. Both the working cylinder and the core cylinder have main channels. The main channel of the working cylinder has a positioning step. The upper part of the core cylinder has a convex ring. The core cylinder is suspended within the main channel of the working cylinder through the cooperation of the convex ring and the positioning step. The working cylinder contains a main control board and an outer coil. The core cylinder contains a main control board and an inner coil. The outer coil and the inner coil are wirelessly connected. The main control board is connected to the outer coil, which is connected to a surface control system. The main control board is connected to the inner coil. The lower end of the core cylinder has a water nozzle connected to a drive unit fixed within the core cylinder. The drive unit drives the water nozzle to move along the main channel of the core cylinder. The working cylinder and the core cylinder are separable; the core cylinder is easy to remove and replace.

Description

Technical Field

[0001] This invention belongs to the field of downhole tools technology for oil extraction, specifically relating to a downhole wireless power transmission and electronically controlled intelligent flow regulation device. Background Technology

[0002] Fine-grained, layered water injection is becoming increasingly important in oilfield development as a crucial measure for stabilizing and increasing production. Existing technologies include two types: cable-based intelligent water injection and cableless intelligent water injection. In the cable-based technology, the intelligent water distributor is permanently placed downhole via a tubing string, powered and controlled via cable. In the cableless technology, the intelligent water distributor is permanently placed downhole via a tubing string, powered by a battery, and controlled via wireless signals transmitted from the ground. In both methods, the intelligent water distributor is permanently placed downhole. Therefore, if the distributor malfunctions, the motor fails, or the sensor malfunctions, it loses its monitoring and adjustment functions. This requires removing the entire tubing string to replace or repair the faulty distributor, which occupies the work window and reduces monitoring and adjustment efficiency. Summary of the Invention

[0003] To address all or part of the aforementioned problems, the present invention aims to provide a downhole wireless power transmission and electronically controlled intelligent flow regulation device. The working cylinder and core cylinder of the present invention are connected wirelessly via an outer coil of the working cylinder and an inner coil of the core cylinder for power supply and control signal transmission. This allows the working cylinder and core cylinder to be separated, and the core cylinder is easy to remove and replace, thus improving process reliability.

[0004] According to one aspect of the present invention, a downhole wireless power transmission and electronically controlled intelligent flow regulation device is provided, comprising a working cylinder and a core cylinder. The lower end of the working cylinder is provided with a radial water nozzle flow channel. Both the working cylinder and the core cylinder are provided with a main channel extending from the upper end to the lower end. The upper part of the main channel of the working cylinder is provided with a positioning step. The upper part of the outer side of the core cylinder is provided with a protruding ring. The core cylinder is mounted in the main channel of the working cylinder through the cooperation of the protruding ring and the positioning step. The working cylinder is equipped with a working cylinder main control board and a working cylinder outer coil that are isolated from the outside world. The core cylinder is equipped with a core cylinder main control board and a core cylinder inner coil that are isolated from the outside world. The working cylinder outer coil and the core cylinder inner coil are wirelessly connected. The working cylinder main control board is connected to the working cylinder outer coil via a cable. The working cylinder outer coil is connected to the ground control system via a cable. The core cylinder main control board and the core cylinder inner coil are connected. The lower end of the core cylinder is provided with a core cylinder water nozzle, which is connected to a drive unit fixed inside the core cylinder. The drive unit is connected to the core cylinder main control board. The drive unit is used to drive the core cylinder water nozzle to move along the axial direction of the main channel of the core cylinder under the control of the core cylinder main control board, so as to adjust the opening of the radial water nozzle flow channel. The core cylinder water nozzle above the radial water nozzle flow channel is sealed to the working cylinder.

[0005] Furthermore, the working cylinder includes a working cylinder upper connector, and the positioning step is disposed within the working cylinder upper connector; the inner wall of the lower end of the working cylinder upper connector is fixedly and sealed with a working cylinder outer coil seal, and the outer wall of the lower end of the working cylinder upper connector is fixedly and sealed with a working cylinder outer cylinder; the lower ends of the working cylinder outer coil seal and the lower ends of the working cylinder outer cylinder are both fixedly and sealed with a working cylinder connecting sleeve; the working cylinder outer coil is disposed within the cavity formed by the working cylinder outer coil seal and the working cylinder outer cylinder; a first cable passage extending from the upper end to the lower end is provided within the working cylinder upper connector, and the cable connected to the ground control system passes through the first cable passage and connects to the working cylinder outer coil.

[0006] Furthermore, the inner wall of the lower end of the working cylinder connecting sleeve is fixedly and sealed with an inner connecting pipe, and the outer wall of the lower end of the working cylinder connecting sleeve is fixedly and sealed with an outer connecting pipe. The lower ends of both the inner and outer connecting pipes are fixedly and sealed with the lower connector of the working cylinder. The main control board of the working cylinder is located in the cavity formed by the inner and outer connecting pipes. A second cable passage channel extending from the upper end to the lower end is provided inside the working cylinder connecting sleeve. The outer coil of the working cylinder is connected to the main control board of the working cylinder through the second cable passage channel. The radial water nozzle flow channel is provided on the lower connector of the working cylinder.

[0007] Furthermore, the lower connector of the working cylinder is provided with a third cable passage extending from the upper end to the lower end, so that the cable connected to the main control board of the working cylinder can be connected to another working cylinder below it through the third cable passage to realize the electrical connection between the two adjacent working cylinders; the inner wall of the upper connector of the working cylinder above the positioning step is provided with a flared ring extending to its upper end, and the lower connector of the working cylinder below the radial water nozzle flow channel is provided with a reducing ring. For any working cylinder, its reducing ring can be inserted into the flared ring of the working cylinder below it, and its reducing ring is limited by the positioning step of the working cylinder below it.

[0008] Furthermore, the core tube includes a core tube retrieval connector. A core tube flow measurement inner tube is fixedly and sealed to the inner wall of the lower end of the core tube retrieval connector. A core tube outer sleeve is fixedly and sealed to the outer wall of the lower end of the core tube retrieval connector. The lower ends of both the core tube flow measurement inner tube and the core tube outer sleeve are fixedly and sealed to the upper end of the core tube connecting sleeve. An ultrasonic flow sensor is installed within the cavity formed by the core tube flow measurement inner tube and the core tube outer sleeve. The ultrasonic flow sensor is connected to the core tube main control board and is fixed to the core tube flow measurement inner tube. The convex ring is disposed on the core tube outer sleeve.

[0009] Furthermore, a core cylinder sealing module is fitted onto the outer sleeve of the core cylinder, and the outer sleeve of the core cylinder and the working cylinder are sealed together by the core cylinder sealing module to prevent fluid from flowing downward through the gap between the outer sleeve of the core cylinder and the working cylinder; the ultrasonic flow sensor includes a first core cylinder ultrasonic flow sensor and a second core cylinder ultrasonic flow sensor; the core cylinder retrieval connector is provided with a retrieval boss that cooperates with the retrieval device.

[0010] Furthermore, the inner wall of the lower end of the core tube connecting sleeve is fixedly and sealed with a core tube connecting inner tube, and the outer wall of the lower end of the core tube connecting sleeve is fixedly and sealed with a core tube inner coil seal. The lower ends of the core tube connecting inner tube and the lower ends of the core tube inner coil seal are both fixedly and sealed with the core tube coil connecting sleeve. The core tube inner coil is disposed in the cavity formed by the core tube connecting inner tube and the core tube inner coil seal.

[0011] Furthermore, the inner wall of the lower end of the core coil connecting sleeve is fixedly and sealed with a core main control board connecting inner tube, and the outer wall of the lower end of the core coil connecting sleeve is fixedly and sealed with a core main control board outer sleeve. The lower ends of the core main control board connecting inner tube and the core main control board outer sleeve are both fixedly and sealed with the core main control board connecting sleeve. The core main control board is disposed in the cavity formed by the core main control board connecting inner tube and the core main control board outer sleeve. The core coil connecting sleeve is provided with a fourth cable passage extending from the upper end to the lower end, and the core coil connecting sleeve is provided with a fifth cable passage extending from the upper end to the lower end. The inner coil of the core is connected to the core main control board through a cable passing through the fifth cable passage. The ultrasonic flow sensor is connected to the core main control board through a cable passing through the fourth and fifth cable passages.

[0012] Furthermore, the inner wall of the lower end of the core cylinder main control board connecting sleeve is fixedly and sealed with a core cylinder motor connecting inner tube, and the outer wall of the lower end of the core cylinder main control board connecting sleeve is fixedly and sealed with a core cylinder motor outer sleeve. The drive unit is fixed in the cavity formed by the core cylinder motor connecting inner tube and the core cylinder motor outer sleeve. The core cylinder main control board connecting sleeve is provided with a sixth cable passage extending from the upper end to the lower end. The core cylinder main control board is connected to the drive unit through the cable passing through the sixth cable passage. A core cylinder water nozzle seal is sleeved on the outer wall of the core cylinder water nozzle. The core cylinder water nozzle seal is used to seal the core cylinder water nozzle and the working cylinder above the radial water nozzle flow channel.

[0013] Furthermore, the drive unit includes a core cylinder motor connected to a core cylinder reducer, which is connected to the core cylinder water nozzle. The core cylinder main control board connecting sleeve is provided with an internal pressure measurement channel and an external pressure measurement channel. The internal pressure measurement channel communicates with the main channel of the core cylinder, and the external pressure measurement channel communicates with the annular space between the core cylinder and the working cylinder. An internal pressure sensor and an external pressure sensor are provided within the clamping cavity formed by the inner tube connecting the core cylinder main control board and the outer sleeve of the core cylinder main control board. The internal pressure sensor is located at one end of the internal pressure measurement channel, and the external pressure sensor is located at one end of the external pressure measurement channel. Both the internal and external pressure sensors are connected to the core cylinder main control board.

[0014] As can be seen from the above technical solution, the intelligent flow regulation device for downhole wireless power transmission and electronic control provided by the present invention has the following beneficial effects: In this invention, the working cylinder and the core cylinder are connected wirelessly via an outer coil of the working cylinder and an inner coil of the core cylinder for power supply and control signal transmission, making the working cylinder and the core cylinder separable. During stratified water injection operations, multiple working cylinders are first lowered into the tubing in one run, and then multiple core cylinders are lowered into the tubing by a drop-and-retrieve method, making the core cylinders easy to remove and replace, thus improving process reliability. The core cylinder of this invention integrates a drive unit and a corresponding detection unit. When the core cylinder malfunctions, it can be removed by a drop-and-retrieve method for replacement or repair, reducing the occupation of the operation window and improving the efficiency and reliability of stratified water injection measurement and adjustment operations. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the working cylinder of a downhole wireless power transmission and electrically controlled intelligent flow regulation device according to an embodiment of the present invention. Figure 2 This is another cross-sectional view of the working cylinder of a downhole wireless power transmission and electrically controlled intelligent flow regulation device according to an embodiment of the present invention. Figure 3This is a cross-sectional view of the core cylinder of a downhole wireless power transmission and electrically controlled intelligent flow regulation device according to an embodiment of the present invention. Figure 4 This is another cross-sectional view of the core cylinder of a downhole wireless power transmission and electrically controlled intelligent flow regulation device according to an embodiment of the present invention; Figure 5 This is a cross-sectional view of a downhole wireless power transmission and electrically controlled intelligent flow regulation device according to an embodiment of the present invention. The attached figures are labeled as follows: 1. Upper connector of working cylinder; 101. Positioning step; 2. Outer coil seal of working cylinder; 3. Outer coil of working cylinder; 4. Connecting sleeve of working cylinder; 5. Inner connecting pipe of working cylinder; 6. Outer connecting pipe of working cylinder; 7. Lower connector of working cylinder; 8. Radial water nozzle flow channel; 81. Main control board of working cylinder; 9. Core cylinder retrieval connector; 10. First core cylinder ultrasonic flow sensor; 11. Inner tube for core cylinder flow measurement; 12. Second core cylinder ultrasonic flow sensor; 13. Outer sleeve of core cylinder; 14. Connecting sleeve of core cylinder; 15. Core cylinder sealing module. 16. Core tube connecting inner tube 17. Core tube inner coil 18. Core tube inner coil seal 19. Core tube coil connecting sleeve 20. Core tube main control board connecting inner tube 21. Core tube main control board outer sleeve 22. Core tube main control board 23. Core tube main control board connecting sleeve 24. Internal pressure measurement channel 241. External pressure measurement channel 242. Core tube motor 25. Core tube motor connecting inner tube 26. Core tube reducer 27. Core tube motor outer sleeve 28. Core tube water nozzle seal 29. Core tube water nozzle 30. Core tube internal pressure sensor 31. Core tube external pressure sensor 32. Detailed Implementation

[0016] To better understand the purpose, structure, and function of this invention, the following detailed description of a downhole wireless power transmission and electrically controlled intelligent flow regulation device is provided in conjunction with the accompanying drawings.

[0017] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, this invention illustrates an embodiment of a downhole wireless power transmission and electrically controlled intelligent flow regulation device, comprising a working cylinder and a core cylinder. The lower end of the working cylinder is provided with a radial water nozzle flow channel 81. Both the working cylinder and the core cylinder have main channels extending from the upper end to the lower end. A positioning step 101 is provided at the upper part of the main channel of the working cylinder, and a convex ring is provided at the upper part of the outer side of the core cylinder. The core cylinder is mounted within the main channel of the working cylinder through the cooperation of the convex ring and the positioning step 101. The working cylinder contains a working cylinder main control board 9 isolated from the outside and a working cylinder outer coil 3. The core cylinder contains a core cylinder main control board 23 isolated from the outside and a core cylinder inner coil 18. The working cylinder outer coil... The inner coil 18 of the core cylinder is wirelessly connected to the outer coil 3 of the working cylinder via a cable. The outer coil 3 of the working cylinder is connected to the ground control system via a cable. The inner coil 18 of the core cylinder is connected to the inner coil 18 of the core cylinder. The lower end of the core cylinder is provided with a core cylinder water nozzle 30. The core cylinder water nozzle 30 is connected to a drive unit fixed inside the core cylinder. The drive unit is connected to the core cylinder main control board 23. The drive unit is used to drive the core cylinder water nozzle 30 to move along the axis of the main channel of the core cylinder under the control of the core cylinder main control board 23, so as to adjust the opening of the radial water nozzle flow channel 81. The core cylinder water nozzle 30 above the radial water nozzle flow channel 81 is sealed to the working cylinder.

[0018] Specifically, the flow regulating device of this invention includes a working cylinder and a core cylinder. The upper part of the main channel of the working cylinder is provided with a positioning step 101, and the upper part of the outer side of the core cylinder is provided with a protruding ring. The core cylinder is mounted in the main channel of the working cylinder through the cooperation of the protruding ring and the positioning step 101.

[0019] The working cylinder has an outer coil, and the core cylinder has an inner coil. The working cylinder and the core cylinder are wirelessly connected through the cooperation of the outer coil and the inner coil. The outer coil of the working cylinder is connected to the working cylinder main control board 9, and the inner coil of the core cylinder is connected to the core cylinder main control board 23. The working cylinder main control board 9 and the core cylinder main control board 23 are used to perform noise reduction, frequency modulation and demodulation processing on the corresponding signals, respectively. The configuration of this embodiment realizes wireless power transmission between the working cylinder and the core cylinder.

[0020] The lower end of the core tube is provided with a core tube nozzle 30. The core tube nozzle 30 can move up and down along the axis of the main channel of the core tube under the drive of the drive unit. The up and down movement of the core tube nozzle 30 will cause a change in the flow area of ​​the radial nozzle flow channel 81, that is, the opening of the radial nozzle flow channel 81 is adjusted. The core tube nozzle 30 above the radial nozzle flow channel 81 is sealed to the working cylinder, so that the liquid passing through the radial nozzle flow channel 81 cannot rise from the gap between the core tube nozzle 30 and the working cylinder.

[0021] In practical use, the corresponding control command is first input through the ground control system. This control command is processed by the working cylinder main control board 9 and loaded onto the working cylinder outer coil 3. The working cylinder outer coil 3 is then wirelessly transmitted outward so that the core cylinder inner coil 18 can receive the signal. After receiving the signal, the core cylinder inner coil 18 transmits the signal to the core cylinder main control board 23. The core cylinder main control board 23 processes the received signal to obtain the corresponding control command. Then, the core cylinder main control board 23 controls the drive unit according to the control command. The drive unit drives the core cylinder water nozzle 30 to move up and down along the axis of the main channel of the core cylinder, ultimately realizing the adjustment of the opening of the radial water nozzle flow channel 81, and realizing the adjustment of the water injection volume in the water distribution and injection process.

[0022] In this embodiment of the invention, the power supply and control signal transmission between the outer coil 3 of the working cylinder and the inner coil 18 of the core cylinder are carried out wirelessly, which makes the working cylinder and the core cylinder separable, and the core cylinder is hung inside the working cylinder, making the core cylinder easy to remove and replace, thereby improving the reliability of the process, reducing the occupation of the working window, and improving the efficiency and reliability of water injection measurement and adjustment operations.

[0023] Among them, such as Figure 1 , Figure 2 As shown, the working cylinder includes an upper connector 1, and a positioning step 101 is disposed inside the upper connector 1. The inner wall of the lower end of the upper connector 1 is fixedly and sealed with an outer coil seal 2, and the outer wall of the lower end of the upper connector 1 is fixedly and sealed with an outer cylinder 4. The lower ends of the outer coil seal 2 and the outer cylinder 4 are both fixedly and sealed with a connecting sleeve 5. The outer coil 3 is disposed in the cavity formed by the outer coil seal 2 and the outer cylinder 4. The upper connector 1 is provided with a first cable passage extending from the upper end to the lower end. The cable connected to the ground control system passes through the first cable passage and connects to the outer coil.

[0024] Specifically, the working cylinder includes a working cylinder upper connector 1, a working cylinder outer coil seal 2, a working cylinder outer coil 3, a working cylinder outer cylinder 4, and a working cylinder connecting sleeve 5. The working cylinder upper connector 1 is provided with a main channel section extending from the upper end to the lower end. The positioning step 101 that cooperates with the core cylinder is provided in the main channel section of the working cylinder upper connector 1. The working cylinder outer coil seal 2 and the working cylinder outer cylinder 4 are both annular structures, and the working cylinder outer cylinder 4 is sleeved on the outside of the working cylinder outer coil seal 2. The working cylinder connecting sleeve 5 is also provided with a main channel section extending from the upper end to the lower end. The aforementioned working cylinder main channel includes the two main channel sections of this embodiment and the inner annular space of the working cylinder outer coil seal 2 located between the two main channel sections.

[0025] The inner wall of the lower end of the upper connector 1 of the working cylinder is fixedly and sealed to the outer coil seal 2 of the working cylinder, and the outer wall of the lower end of the upper connector 1 of the working cylinder is fixedly and sealed to the outer cylinder 4 of the working cylinder. This arrangement forms a clamping cavity between the outer cylinder 4 of the working cylinder and the outer coil seal 2 of the working cylinder. The outer coil 3 of the working cylinder is located in this clamping cavity. The lower end of the outer coil seal 2 of the working cylinder is fixedly and sealed to the inner wall of the upper end of the connecting sleeve 5 of the working cylinder, and the lower end of the outer cylinder 4 of the working cylinder is fixedly and sealed to the outer wall of the upper end of the connecting sleeve 5 of the working cylinder. These four seals make the clamping cavity between the outer cylinder 4 of the working cylinder and the outer coil seal 2 of the working cylinder a closed cavity, thereby achieving the purpose of isolating the outer coil 3 of the working cylinder from the outside world.

[0026] Furthermore, the upper connector 1 of the working drum is provided with a first cable passage extending from the upper end to the lower end. This first cable passage is used for the cable to pass through. One end of the cable is connected to the ground control system, and the other end of the cable is connected to the outer coil of the working drum.

[0027] Among them, such as Figure 1 , Figure 2 As shown, the inner wall of the lower end of the working cylinder connecting sleeve 5 is fixedly and sealed with the inner connecting pipe 6 of the working cylinder, and the outer wall of the lower end of the working cylinder connecting sleeve 5 is fixedly and sealed with the outer connecting pipe 7 of the working cylinder. The lower ends of the inner connecting pipe 6 and the outer connecting pipe 7 of the working cylinder are both fixedly and sealed with the lower connector 8 of the working cylinder. The main control board 9 of the working cylinder is located in the cavity formed by the inner connecting pipe 6 and the outer connecting pipe 7 of the working cylinder. A second cable passage channel extending from the upper end to the lower end is provided in the working cylinder connecting sleeve 5. The outer coil of the working cylinder is connected to the main control board 9 of the working cylinder through the second cable passage channel. The radial water nozzle flow channel 81 is provided on the lower connector 8 of the working cylinder.

[0028] In this embodiment, the working cylinder also includes an inner connecting pipe 6, an outer connecting pipe 7, a lower connector 8, and a main control board 9. The inner wall of the lower end of the working cylinder connecting sleeve 5 is fixedly and sealed to the inner connecting pipe 6, and the outer wall of the lower end of the working cylinder connecting sleeve 5 is fixedly and sealed to the outer connecting pipe 7. This arrangement forms a cavity between the inner connecting pipe 6 and the outer connecting pipe 7. The main control board 9 is located in this cavity. The lower end of the inner connecting pipe 6 is fixedly and sealed to the inner wall of the lower connector 8, and the lower end of the outer connecting pipe 7 is fixedly and sealed to the outer wall of the lower connector 8. These four seals make the cavity between the inner connecting pipe 6 and the outer connecting pipe 7 a closed cavity, thereby isolating the main control board 9 from the outside world.

[0029] Furthermore, a second cable passage extending from the upper end to the lower end is provided inside the working cylinder connecting sleeve 5. This second cable passage is used for cables to pass through, and the two ends of the cables are respectively connected to the outer coil of the working cylinder and the main control board 9 of the working cylinder.

[0030] In this embodiment, the lower connector 8 of the working cylinder is also provided with a main channel section extending from the upper end to the lower end. The outer connecting pipe 7 of the working cylinder is sleeved on the outside of the inner connecting pipe 6 of the working cylinder. In conjunction with the above, the main channel of the working cylinder from top to bottom includes the upper connector 1 of the working cylinder, the inner annulus of the outer coil seal 2 of the working cylinder, the connecting sleeve 5 of the working cylinder, the inner annulus of the inner connecting pipe 6 of the working cylinder, and the main channel section of the lower connector 8 of the working cylinder.

[0031] Finally, the radial water nozzle flow channel 81 is provided on the side wall of the lower connector 8 of the working cylinder, so that the liquid in the main channel of the core cylinder can be sprayed out from the radial water nozzle flow channel 81.

[0032] Among them, such as Figure 1 As shown, the lower connector 8 of the working cylinder is provided with a third cable passage extending from the upper end to the lower end, so that the cable connected to the main control board 9 of the working cylinder can be connected to another working cylinder below it through the third cable passage to realize the electrical connection between the two adjacent working cylinders; the inner wall of the upper connector 1 of the working cylinder above the positioning step 101 is provided with a flared ring extending to its upper end, and the lower connector 8 of the working cylinder below the radial water nozzle flow channel 81 is provided with a reducing ring. For any working cylinder, its reducing ring can be inserted into the flared ring of the working cylinder below it, and its reducing ring is limited by the positioning step 101 of the working cylinder below it.

[0033] In this embodiment, the third cable passage channel enables electrical connection between the working cylinders of the upper and lower downhole flow regulating devices. That is, for any working cylinder, its main control board 9 is connected to the outer coil seal 2 of the working cylinder below it through the third cable passage channel, thereby realizing control and power supply when there are several downhole flow regulating devices in this embodiment. Furthermore, the flared ring on the upper connector 1 of each working cylinder and the reduced diameter ring on the lower connector 8 of each working cylinder enable mechanical cooperation between the working cylinders of the upper and lower downhole flow regulating devices. Specifically, for any working cylinder, its reduced diameter ring can be inserted into the flared ring of the working cylinder below it, and after the reduced diameter ring is inserted into the flared ring of the working cylinder below it, the reduced diameter ring is limited by the positioning step 101 of the working cylinder below it. For example, the reduced diameter ring and the flared ring are threaded together.

[0034] Specifically, during the layered water injection operation, multiple working cylinders of the downhole wireless power transmission and electrically controlled intelligent flow regulation device of this embodiment are first lowered into the tubing in one run. Assuming there are four layers, from bottom to top, they include layer 1, layer 2, layer 3, and layer 4 working cylinders. Adjacent working cylinders are electrically connected by cables, and the topmost working cylinder is connected to the ground control system by a cable. Then, the corresponding core cylinders are lowered in a drop-and-retrieve manner, that is, the first core cylinder is lowered in the first run, the second core cylinder in the second run, the third core cylinder in the third run, and the fourth core cylinder in the fourth run. After the core cylinders are lowered, each core cylinder is mounted in the main channel of the corresponding working cylinder through the cooperation of the convex ring and the positioning step 101. After the lowering is completed, the ground control system is connected to the working cylinders by cables, and wireless transmission occurs between the working cylinders and the core cylinders. The ground control system can then supply power and send control signals to the working cylinders, thereby controlling the opening of the water nozzles in each layer through the core cylinders to complete the measurement and adjustment operations of each layer.

[0035] For the configuration of multiple downhole flow regulation devices included in this embodiment, the size of the convex ring of the first-stage core tube must be smaller than the size of the positioning steps 101 of the second, third, and fourth working tubes, so that the convex ring of the first-stage core tube can pass through the positioning steps 101 of the second, third, and fourth working tubes, ensuring that the second, third, and fourth working tubes do not affect the deployment and retrieval of the first-stage core tube; the size of the convex ring of the second-stage core tube must be smaller than the size of the positioning steps 101 of the third and fourth working tubes, so that the convex ring of the second-stage core tube can pass through the positioning steps 101 of the third and fourth working tubes, ensuring that the third and fourth working tubes do not affect the deployment and retrieval of the second-stage core tube; and the size of the convex ring of the third-stage core tube must be smaller than the size of the positioning steps 101 of the fourth working tube, ensuring that the fourth working tube does not affect the deployment and retrieval of the third-stage core tube.

[0036] For the core tube, such as Figure 3 , Figure 4 As shown, it includes a core tube retrieval connector 10, with a core tube flow measurement inner tube 12 fixedly and sealed to the inner wall of the lower end of the core tube retrieval connector 10, and a core tube outer sleeve 14 fixedly and sealed to the outer wall of the lower end of the core tube retrieval connector 10. The lower ends of the core tube flow measurement inner tube 12 and the core tube outer sleeve 14 are both fixedly and sealed to the upper end of the core tube connecting sleeve 15. An ultrasonic flow sensor is installed in the cavity formed by the core tube flow measurement inner tube 12 and the core tube outer sleeve 14. The ultrasonic flow sensor is connected to the core tube main control board 23 and is fixed on the core tube flow measurement inner tube 12. A convex ring is provided on the core tube outer sleeve 14.

[0037] In this embodiment, the core tube includes a core tube retrieval connector 10, a core tube flow measurement inner tube 12, a core tube outer sleeve 14, and a core tube connecting sleeve 15. The core tube flow measurement inner tube 12 is fixedly and sealed to the inner wall of the lower end of the core tube retrieval connector 10, and the core tube outer sleeve 14 is fixedly and sealed to the outer wall of the lower end of the core tube retrieval connector 10. The core tube flow measurement inner tube 12 and the core tube outer sleeve 14 form a clamping cavity. An ultrasonic flow sensor is located in this clamping cavity and is fixed to the core tube flow measurement inner tube 12. The ultrasonic flow sensor is used to measure the injected flow and transmit the measurement result to the core tube main control board 23. The lower end of the core tube flow measurement inner tube 12 is fixedly and sealed to the inner wall of the upper end of the core tube connecting sleeve 15, and the lower end of the core tube outer sleeve 14 is fixedly and sealed to the outer wall of the upper end of the core tube connecting sleeve 15.

[0038] Furthermore, in this embodiment, a convex ring that mates with the positioning step 101 of the working cylinder is provided on the outer sleeve 14 of the core cylinder.

[0039] Among them, such as Figure 3 , Figure 4 and Figure 5 As shown, a core cylinder sealing module 16 is fitted on the core cylinder outer sleeve 14, and the core cylinder outer sleeve 14 and the working cylinder are sealed together by the core cylinder sealing module 16 so that the fluid cannot flow downward through the gap between the core cylinder outer sleeve 14 and the working cylinder; the ultrasonic flow sensor includes a first core cylinder ultrasonic flow sensor 11 and a second core cylinder ultrasonic flow sensor 13; the core cylinder retrieval connector 10 is provided with a retrieval boss that cooperates with the retrieval device.

[0040] Specifically, in this embodiment, a core cylinder sealing module 16 is fitted on the core cylinder outer sleeve 14. The core cylinder sealing module 16 is used to seal the core cylinder outer sleeve 14 and the working cylinder outer coil seal 2, so that fluid cannot flow down through the annulus between the core cylinder outer sleeve 14 and the working cylinder outer coil seal 2.

[0041] The ultrasonic flow sensor includes a first core tube ultrasonic flow sensor 11 and a second core tube ultrasonic flow sensor 13. Both the first core tube ultrasonic flow sensor 11 and the second core tube ultrasonic flow sensor 13 are fixed on the core tube flow measurement inner tube 12, and the core tube flow measurement inner tube 12 is connected to the core tube main control board 23.

[0042] Finally, the retrieval boss inside the core tube retrieval connector 10 facilitates the core tube being lowered into the working tube by throwing and retrieval, and also facilitates the removal of the core tube for replacement or maintenance.

[0043] Among them, such as Figure 3 , Figure 4As shown, the inner wall of the lower end of the core tube connecting sleeve 15 is fixedly and sealed with the core tube connecting inner tube 17, and the outer wall of the lower end of the core tube connecting sleeve 15 is fixedly and sealed with the core tube inner coil seal 19. The lower ends of the core tube connecting inner tube 17 and the core tube inner coil seal 19 are both fixedly and sealed with the core tube coil connecting sleeve 20. The core tube inner coil 18 is set in the cavity formed by the core tube connecting inner tube 17 and the core tube inner coil seal 19.

[0044] Specifically, the core tube also includes a core tube connecting inner tube 17, a core tube inner coil 18, a core tube inner coil seal 19, and a core tube coil connecting sleeve 20. The lower inner wall of the core tube connecting sleeve 15 is fixedly and sealed to the core tube connecting inner tube 17, and the lower outer wall of the core tube connecting sleeve 15 is fixedly and sealed to the core tube inner coil seal 19. A clamping cavity is formed between the core tube connecting inner tube 17 and the core tube inner coil seal 19, and the core tube inner coil 18 is disposed in this clamping cavity. The lower end of the core tube connecting inner tube 17 is fixedly and sealed to the inner wall of the core tube coil connecting sleeve 20, and the lower end of the core tube inner coil seal 19 is fixedly and sealed to the outer wall of the core tube coil connecting sleeve 20. These four seals isolate the core tube inner coil 18 from the outside world.

[0045] The inner wall of the lower end of the core coil connecting sleeve 20 is sealed with the core main control board connecting inner tube 21, and the outer wall of the lower end of the core coil connecting sleeve 20 is sealed with the core main control board outer sleeve 22. The lower ends of the core main control board connecting inner tube 21 and the lower ends of the core main control board outer sleeve 22 are both sealed with the core main control board connecting sleeve 24. The core main control board 23 is set in the cavity formed by the core main control board connecting inner tube 21 and the core main control board outer sleeve 22.

[0046] Specifically, the core tube also includes a core tube main control board connecting inner tube 21, a core tube main control board outer sleeve 22, a core tube main control board 23, and a core tube main control board connecting sleeve 24. The inner wall of the lower end of the core tube coil connecting sleeve 20 is sealed to the core tube main control board connecting inner tube 21, and the outer wall of the lower end of the core tube coil connecting sleeve 20 is sealed to the core tube main control board outer sleeve 22. The core tube main control board connecting inner tube 21 and the core tube main control board outer sleeve 22 form a clamping cavity, and the core tube main control board 23 is located in this clamping cavity. The lower end of the core tube main control board connecting inner tube 21 is sealed to the inner wall of the core tube main control board connecting sleeve 24, and the lower end of the core tube main control board outer sleeve 22 is sealed to the outer wall of the core tube main control board connecting sleeve 24. This four-way sealing setting achieves the isolation of the core tube main control board 23 from the outside world.

[0047] As mentioned above, the ultrasonic flow sensor is connected to the core cylinder main control board 23, and the core cylinder main control board 23 is connected to the core cylinder inner coil 18. Specifically, the core cylinder connecting sleeve 15 is provided with a fourth cable passage extending from the upper end to the lower end, and the core cylinder coil connecting sleeve 20 is provided with a fifth cable passage extending from the upper end to the lower end. The core cylinder inner coil is connected to the core cylinder main control board 23 through the fifth cable passage, and the ultrasonic flow sensor is connected to the core cylinder main control board 23 through the fourth and fifth cable passages.

[0048] Among them, such as Figure 3 , Figure 4 and Figure 5 As shown, the inner wall of the lower end of the core cylinder main control board connecting sleeve 24 is fixedly and sealed to the core cylinder motor connecting inner tube 26, and the outer wall of the lower end of the core cylinder main control board connecting sleeve 24 is fixedly and sealed to the core cylinder motor outer sleeve 28. The drive unit is fixed in the cavity formed by the core cylinder motor connecting inner tube 26 and the core cylinder motor outer sleeve 28. The core cylinder main control board connecting sleeve 24 is provided with a sixth cable passage extending from the upper end to the lower end. The core cylinder main control board 23 is connected to the drive unit through the cable passing through the sixth cable passage. The outer wall of the core cylinder water nozzle 30 is fitted with a core cylinder water nozzle seal 29, which is used to seal the core cylinder water nozzle 30 and the working cylinder above the radial water nozzle flow channel 81.

[0049] Specifically, the core tube also includes a core tube motor connecting inner tube 26, a core tube motor outer sleeve 28, a core tube water nozzle seal 29, and a core tube water nozzle 30. The core tube motor connecting inner tube 26 is fixedly and sealed to the inner wall of the lower end of the core tube main control board connecting sleeve 24, and the core tube motor outer sleeve 28 is fixedly and sealed to the outer wall of the lower end of the core tube main control board connecting sleeve 24. The core tube motor connecting inner tube 26 and the core tube motor outer sleeve 28 form a clamping cavity, and the drive unit for driving the core tube water nozzle 30 is located within this clamping cavity. The core tube water nozzle 30 contains a core tube water nozzle seal 29, which seals the core tube water nozzle 30 above the radial water nozzle flow channel 81 and the working tube lower connector 8, preventing fluid from rising along the annulus between the core tube water nozzle 30 and the working tube lower connector 8, so that fluid can only be ejected outward through the core tube water nozzle 30 and the radial water nozzle flow channel 81.

[0050] Furthermore, the drive unit of this application is also connected to the core barrel main control board 23 in order to receive the control signals of the core barrel main control board 23. Specifically, the core barrel main control board connecting sleeve 24 is provided with a sixth cable passage extending from the upper end to the lower end, and the core barrel main control board 23 is connected to the drive unit through the cable passing through the sixth cable passage.

[0051] The drive unit includes a core cylinder motor 25, which is connected to a core cylinder reducer 27. The core cylinder reducer 27 is also located in the cavity formed by the inner tube 26 of the core cylinder motor and the outer tube 28 of the core cylinder motor. The core cylinder reducer 27 is connected to the core cylinder water nozzle 30.

[0052] The core cylinder main control board connecting sleeve 24 is provided with an internal pressure measurement channel 241 and an external pressure measurement channel 242. The internal pressure measurement channel 241 is connected to the main channel of the core cylinder, and the external pressure measurement channel 242 is connected to the annulus between the core cylinder and the working cylinder. The core cylinder internal pressure sensor 31 and the core cylinder external pressure sensor 32 are provided in the clamping cavity formed by the core cylinder main control board connecting inner tube 21 and the core cylinder main control board outer sleeve 22. The core cylinder internal pressure sensor 31 is located at one end of the internal pressure measurement channel 241, and the core cylinder external pressure sensor 32 is located at one end of the external pressure measurement channel 242. Both the core cylinder internal pressure sensor 31 and the core cylinder external pressure sensor 32 are connected to the core cylinder main control board 23.

[0053] Specifically, when the injected liquid flows through the main channel of the core cylinder and through the core cylinder main control board connecting sleeve 24, the internal pressure measurement channel is connected to the core cylinder internal pressure sensor 31, which measures the internal pressure. When the injected liquid flows through the radial water nozzle flow channel 81 on the lower connector 8 of the working cylinder, the core cylinder main control board 23 controls the core cylinder motor 25, which drives the core cylinder reducer 27 to cause the core cylinder water nozzle 30 to move axially. With the cooperation of the core cylinder water nozzle seal 29 and the radial water nozzle flow channel 81 on the lower connector 8 of the working cylinder, the opening of the core cylinder water nozzle is adjusted, thereby realizing the control of the injection amount. The external pressure measurement channel of the core cylinder main control board connecting sleeve 24 is connected to the core cylinder external pressure sensor 32, which measures the external pressure.

[0054] The core tube according to the embodiments of the present invention specifically includes a core tube retrieval connector 10, a core tube flow measurement inner tube 12, a core tube outer sleeve 14, a core tube connecting sleeve 15, a core tube sealing module 16, a core tube connecting inner tube 17, a core tube inner coil 18, a core tube inner coil seal 19, a core tube coil connecting sleeve 20, a core tube main control board connecting inner tube 21, a core tube main control board outer sleeve 22, a core tube main control board 23, a core tube main control board connecting sleeve 24, a core tube motor 25, a core tube motor connecting inner tube 26, a core tube reducer 27, a core tube motor outer sleeve 28, a core tube water nozzle seal 29, a core tube water nozzle 30, a core tube internal pressure sensor 31, and a core tube external pressure sensor 32. The core tube retrieval connector 10, core tube connecting sleeve 15, core tube coil connecting sleeve 20, and core tube main control board connecting sleeve 24 are all provided with main channel sections. The main channel section of the core tube retrieval connector 10, the inner annulus of the core tube flow measurement inner tube 12, the main channel section of the core tube connecting sleeve 15, the inner annulus of the core tube connecting inner tube 17, the main channel section of the core tube coil connecting sleeve 20, the inner annulus of the core tube main control board connecting inner tube 21, the main channel section of the core tube main control board connecting sleeve 24, and the inner annulus of the core tube motor connecting inner tube 26 form the main channel of the core tube in this embodiment of the invention.

[0055] In the downhole wireless power transmission and intelligent flow regulation device of this invention, the control signal of the ground control system is transmitted to the working barrel main control board 9 via cable. After processing the control signal, the working barrel main control board 9 loads the control signal onto the working barrel outer coil 3, so that the control signal is transmitted outward wirelessly through the working barrel outer coil 3. After receiving the control signal from the working barrel outer coil 3, the core barrel inner coil 18 transmits the control signal to the core barrel main control board 23. The core barrel main control board 23 controls each core barrel motor 25 according to the control signal to adjust the flow area of ​​the radial water nozzle flow channel 81, thereby controlling the injection volume of each layer. The flow rate measured by the first core barrel ultrasonic flow sensor 11 and the second core barrel ultrasonic flow sensor 13, the external pressure data measured by the core barrel external pressure sensor 32, and the internal pressure data measured by the core barrel inner pressure sensor 31 are all transmitted back to the land control system through the wireless transmission method of the core barrel inner coil 18 and the working barrel outer coil 3, so that the ground control system can make corresponding control decisions or understand the corresponding situation downhole in a timely manner.

[0056] In this embodiment of the invention, the ground control system connects each working cylinder to a single cable. Power supply and control signal transmission between the working cylinder and the core cylinder are achieved wirelessly via an outer coil 3 in the working cylinder and an inner coil 18 in the core cylinder, allowing the working cylinder and core cylinder to be separated. During stratified water injection, a single pipeline is first lowered into multiple working cylinders, and then multiple core cylinders are lowered in stages using a retrieval method. This facilitates the removal and replacement of the core cylinders, improving process reliability. The core cylinder in this embodiment integrates a drive unit and a corresponding detection unit. When a core cylinder malfunctions, it can be retrieved for replacement or repair via retrieval, reducing the occupation of the work window and improving the efficiency and reliability of stratified water injection measurement and adjustment operations.

[0057] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0058] Furthermore, the terms "a," "two," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0059] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A wireless power transmission and electrically controlled intelligent flow regulation device for downhole applications, characterized in that, The device includes a working cylinder and a core cylinder. The lower end of the working cylinder is provided with a radial water nozzle flow channel (81). Both the working cylinder and the core cylinder are provided with a main channel extending from the upper end to the lower end. The upper part of the main channel of the working cylinder is provided with a positioning step (101). The upper part of the outer side of the core cylinder is provided with a protruding ring. The core cylinder is mounted in the main channel of the working cylinder through the cooperation of the protruding ring and the positioning step (101). The working cylinder is equipped with a working cylinder main control board (9) and a working cylinder outer coil (3) that are isolated from the outside world. The core cylinder is equipped with a core cylinder main control board (23) and a core cylinder inner coil (18) that are isolated from the outside world. The working cylinder outer coil (3) and the core cylinder inner coil (18) are wirelessly connected. The working cylinder main control board (9) is connected to the working cylinder outer coil (3) through a cable. The working cylinder outer coil (3) is connected to the ground control system through a cable. The core cylinder main control board (23) and the core cylinder inner coil (18) are connected. The lower end of the core cylinder is provided with a core cylinder water nozzle (30). The core cylinder water nozzle (30) is connected to a drive unit fixed inside the core cylinder. The drive unit is connected to the core cylinder main control board (23). The drive unit is used to drive the core cylinder water nozzle (30) to move along the axial direction of the main channel of the core cylinder under the control of the core cylinder main control board (23) in order to adjust the opening of the radial water nozzle flow channel (81). The core cylinder water nozzle (30) above the radial water nozzle flow channel (81) is sealed to the working cylinder.

2. The downhole wireless power transmission and electrically controlled intelligent flow regulation device according to claim 1, characterized in that, The working cylinder includes a working cylinder upper connector (1), and the positioning step (101) is disposed inside the working cylinder upper connector (1); the inner wall of the lower end of the working cylinder upper connector (1) is fixedly and sealed with a working cylinder outer coil seal (2), and the outer wall of the lower end of the working cylinder upper connector (1) is fixedly and sealed with a working cylinder outer cylinder (4). The lower ends of the working cylinder outer coil seal (2) and the lower ends of the working cylinder outer cylinder (4) are both fixedly and sealed with a working cylinder connecting sleeve (5). The working cylinder outer coil (3) is disposed in the cavity formed by the working cylinder outer coil seal (2) and the working cylinder outer cylinder (4). The working cylinder upper connector (1) is provided with a first cable passage extending from the upper end to the lower end. The cable connected to the ground control system passes through the first cable passage and connects to the working cylinder outer coil.

3. The downhole wireless power transmission and electrically controlled intelligent flow regulation device according to claim 2, characterized in that, The inner wall of the lower end of the working cylinder connecting sleeve (5) is fixedly and sealed with the inner connecting pipe (6) of the working cylinder, and the outer wall of the lower end of the working cylinder connecting sleeve (5) is fixedly and sealed with the outer connecting pipe (7) of the working cylinder. The lower ends of the inner connecting pipe (6) and the outer connecting pipe (7) of the working cylinder are fixedly and sealed with the lower connector (8) of the working cylinder. The main control board (9) of the working cylinder is located in the cavity formed by the inner connecting pipe (6) and the outer connecting pipe (7) of the working cylinder. A second cable passage is provided in the working cylinder connecting sleeve (5) extending from the upper end to the lower end. The outer coil of the working cylinder is connected to the main control board (9) of the working cylinder through the second cable passage. The radial water nozzle flow channel (81) is provided on the lower connector (8) of the working cylinder.

4. The downhole wireless power transmission and electrically controlled intelligent flow regulation device according to claim 3, characterized in that, The lower connector (8) of the working cylinder is provided with a third cable passage extending from the upper end to the lower end. The cable connected to the main control board (9) of the working cylinder is connected to another working cylinder below it through the third cable passage to realize the electrical connection between the two adjacent working cylinders. The inner wall of the upper connector (1) of the working cylinder above the positioning step (101) is provided with a flared ring extending to the upper end of the upper connector (1) of the working cylinder. The lower connector (8) of the working cylinder below the radial water nozzle flow channel (81) is provided with a reducing ring. For any working cylinder, its reducing ring can be inserted into the flared ring of the working cylinder below it, and its reducing ring is limited by the positioning step (101) of the working cylinder below it.

5. The downhole wireless power transmission and electrically controlled intelligent flow regulation device according to claim 1, characterized in that, The core tube includes a core tube retrieval connector (10). The inner wall of the lower end of the core tube retrieval connector (10) is fixedly and sealed with a core tube flow measurement inner tube (12). The outer wall of the lower end of the core tube retrieval connector (10) is fixedly and sealed with a core tube outer sleeve (14). The lower ends of the core tube flow measurement inner tube (12) and the lower ends of the core tube outer sleeve (14) are fixedly and sealed with the upper end of the core tube connecting sleeve (15). An ultrasonic flow sensor is provided in the cavity formed by the core tube flow measurement inner tube (12) and the core tube outer sleeve (14). The ultrasonic flow sensor is connected to the core tube main control board (23). The ultrasonic flow sensor is fixed on the core tube flow measurement inner tube (12). The convex ring is provided on the core tube outer sleeve (14).

6. The downhole wireless power transmission and electrically controlled intelligent flow regulation device according to claim 5, characterized in that, The core cylinder outer sleeve (14) is fitted with a core cylinder sealing module (16), and the core cylinder outer sleeve (14) and the working cylinder are sealed together by the core cylinder sealing module (16) so that the fluid cannot flow downward through the gap between the core cylinder outer sleeve (14) and the working cylinder; the ultrasonic flow sensor includes a first core cylinder ultrasonic flow sensor (11) and a second core cylinder ultrasonic flow sensor (13); the core cylinder retrieval connector (10) is provided with a retrieval boss that cooperates with the retrieval device.

7. The downhole wireless power transmission and electrically controlled intelligent flow regulation device according to claim 5, characterized in that, The inner wall of the lower end of the core tube connecting sleeve (15) is fixedly and sealed with a core tube connecting inner tube (17), and the outer wall of the lower end of the core tube connecting sleeve (15) is fixedly and sealed with a core tube inner coil seal (19). The lower ends of the core tube connecting inner tube (17) and the lower ends of the core tube inner coil seal (19) are both fixedly and sealed with the core tube coil connecting sleeve (20). The core tube inner coil (18) is arranged in the cavity formed by the core tube connecting inner tube (17) and the core tube inner coil seal (19).

8. The downhole wireless power transmission and electrically controlled intelligent flow regulation device according to claim 7, characterized in that, The inner wall of the lower end of the core coil connecting sleeve (20) is fixedly and sealed to the core main control board connecting inner tube (21), and the outer wall of the lower end of the core coil connecting sleeve (20) is fixedly and sealed to the core main control board outer sleeve (22). The lower ends of the core main control board connecting inner tube (21) and the lower ends of the core main control board outer sleeve (22) are both fixedly and sealed to the core main control board connecting sleeve (24). The core main control board (23) is disposed between the core main control board connecting inner tube (21) and the core main control board outer sleeve (24). Inside the clamping cavity formed by the sleeve (22), the core tube connecting sleeve (15) is provided with a fourth cable passage extending from the upper end to the lower end, and the core tube coil connecting sleeve (20) is provided with a fifth cable passage extending from the upper end to the lower end. The coil inside the core tube is connected to the core tube main control board (23) through the fifth cable passage via a cable, and the ultrasonic flow sensor is connected to the core tube main control board (23) through the fourth cable passage and the fifth cable passage via a cable.

9. The downhole wireless power transmission and electrically controlled intelligent flow regulation device according to claim 8, characterized in that, The inner wall of the lower end of the core cylinder main control board connecting sleeve (24) is fixedly and sealed with the core cylinder motor connecting inner tube (26), and the outer wall of the lower end of the core cylinder main control board connecting sleeve (24) is fixedly and sealed with the core cylinder motor outer sleeve (28). The drive unit is fixed in the cavity formed by the core cylinder motor connecting inner tube (26) and the core cylinder motor outer sleeve (28). The core cylinder main control board connecting sleeve (24) is provided with a sixth cable passage extending from the upper end to the lower end. The core cylinder main control board (23) is connected to the drive unit through the cable passing through the sixth cable passage. The outer wall of the core cylinder water nozzle (30) is fitted with a core cylinder water nozzle seal (29). The core cylinder water nozzle seal (29) is used to seal the core cylinder water nozzle (30) and the working cylinder above the radial water nozzle flow channel (81).

10. The downhole wireless power transmission and electrically controlled intelligent flow regulation device according to claim 9, characterized in that, The drive unit includes a core cylinder motor (25), which is connected to a core cylinder reducer (27). The core cylinder reducer (27) is connected to the core cylinder water nozzle (30). The core cylinder main control board connecting sleeve (24) is provided with an internal pressure measurement channel (241) and an external pressure measurement channel (242). The internal pressure measurement channel (241) is connected to the main channel of the core cylinder, and the external pressure measurement channel (242) is connected to the annulus between the core cylinder and the working cylinder. The inner tube (21) of the cylinder main control board and the outer tube (22) of the cylinder main control board are connected to a core cylinder internal pressure sensor (31) and a core cylinder external pressure sensor (32). The core cylinder internal pressure sensor (31) is located at one end of the internal pressure measurement channel (241), and the core cylinder external pressure sensor (32) is located at one end of the external pressure measurement channel (242). Both the core cylinder internal pressure sensor (31) and the core cylinder external pressure sensor (32) are connected to the core cylinder main control board (23).

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