Ultra-deep well high-torque intelligent motor integrated structure

Abstract

The application discloses a kind of ultra-deep well high-torsion intelligent motor integrated structures, it is related to screw drill field, including power assembly, transmission assembly and bearing assembly, power assembly is provided with stator body and rotor body, the stator body is double-tube type setting, respectively as inner tube and outer tube, the inner wall of outer tube is preformed heterotypic equal wall thickness pipe, and between inner tube and outer tube is provided with a plurality of support ribs, the inner wall of inner tube is provided with rubber lining.The support rib is connected between the inner tube and the outer tube of the present application, so that the whole forms a continuous beam type stress support, when the rotor body rotates rapidly inside the stator body, the load distribution is optimized by using the multi-point support of the support rib, the bending deformation and the running vibration are reduced, the rubber layer is arranged with equal wall thickness, the uniform heat dissipation is ensured without local heat accumulation, the rubber aging is delayed, and the gap between the inner tube and the outer tube is a heat dissipation channel, which is used to quickly lead out the friction heat when the stator operates.

Description

Technical Field

[0001] This invention relates to the field of screw drilling tools, specifically to an integrated structure for a high-torque intelligent motor in ultra-deep wells. Background Technology

[0002] Screw drills are hydraulically driven tools placed at the bottom of wells in oil and geological drilling. They rely on mud pumped into the well from the surface as power to convert liquid pressure energy into rotational mechanical energy. They can directly drive the drill bit to rotate and break rocks without rotating the entire drill pipe. They are specifically used for drilling directional wells, horizontal wells, and curved wells, and are the core power components downhole.

[0003] Existing screw drill stators are mostly single-shell non-uniform wall thickness structures. The outer wall of the stator is a standard cylindrical surface, while the inner wall is a helical curved surface, and it is lined with natural rubber. During the mud injection process, the rotor rotates rapidly inside the stator. The heat dissipation effect inside the stator is poor. During the rapid rotation of the rotor, heat will accumulate, causing the rubber to overheat and age locally, thus affecting the overall service life. Furthermore, the existing stator is a simply supported beam with constraints at both ends and no support in the middle. Under the action of drilling pressure, alternating torque, and downhole bending loads, the stress concentration of the entire structure is obvious, and the outer shell is prone to bending deformation. Moreover, its simply supported beam structure cannot achieve uniform flexible deformation under directional drilling conditions, resulting in severe local deformation overload, which restricts the drilling tool's directional drilling capability and adaptability to complex well conditions.

[0004] In summary, the existing stator has poor heat dissipation during rotor operation, which shortens the lifespan of the rubber due to aging. At the same time, the stator is a simply supported beam structure with constraints at both ends, which makes it prone to stress concentration and deformation of the shell, severely limiting the drilling tool's directional drilling capability and adaptability to complex working conditions. Summary of the Invention

[0005] Based on this, the purpose of this invention is to provide an integrated structure for a high-torque intelligent motor in ultra-deep wells, in order to solve the technical problems of poor heat dissipation of the stator during rotor operation, which leads to shortened rubber aging life, and the stator being a simply supported beam structure constrained at both ends, which is prone to stress concentration and shell deformation, severely limiting the drilling tool's directional drilling capability and adaptability to complex working conditions.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an integrated structure for an ultra-deep well high-torque intelligent motor, comprising a power component, a transmission component, and a bearing component. One end of the power component is connected to the transmission component, and one end of the transmission component is connected to the bearing component. The power component is provided with a stator body and a rotor body, and a cavity is provided between the stator body and the rotor body. The stator body is a double-tube configuration, consisting of an inner tube and an outer tube. The inner wall of the outer tube is a pre-formed irregular-shaped tube with equal wall thickness, and an array of support ribs is provided between the inner tube and the outer tube. The inner wall of the inner tube is provided with a rubber liner, and the contour of the inner tube is precisely matched at the rubber liner.

[0007] By adopting the above technical solution, a supporting rib is connected between the inner tube and the outer tube, so that the whole is formed into a continuous beam-type force support. When the rotor body rotates rapidly inside the stator body, the multi-point support of the supporting rib optimizes the load distribution, reduces bending deformation and operating vibration, and the wall thickness arrangement of the rubber layer ensures uniform heat dissipation without local heat accumulation, delays rubber aging, and the gap between the inner tube and the outer tube is a heat dissipation channel, which is used to quickly dissipate the frictional heat during stator operation.

[0008] The present invention is further configured such that the transmission assembly includes a flexible shaft, a universal joint, and a shaft, one end of the flexible shaft is connected to the universal joint, and one end of the universal joint is connected to the shaft, which is connected to one end of the bearing assembly.

[0009] Preferably, the eccentric motion of the rotor body can be converted into concentric motion through the action of the flexible shaft, universal joint and shaft, and the torque and speed can be transmitted to the bearing assembly.

[0010] The present invention is further configured such that one end of the bearing assembly is connected to a drill bit, and an intelligent monitoring component is provided inside the drill bit.

[0011] Preferably, the drill bit is designed to continuously rotate and break up the formation rock, with the cuttings returning to the surface along the annulus of the wellbore with the drilling fluid, thus enabling continuous directional drilling. At the same time, the intelligent monitoring components can simultaneously acquire six key parameters, including triaxial vibration, high-frequency torsional vibration, temperature, rotational speed, annular pressure, and torque, in a single well run.

[0012] The present invention is further configured such that the intelligent monitoring component includes a sensor module, a signal conditioning and acquisition module, an embedded processing module, a large-capacity storage module, a power supply module, and a pressure-resistant sealed housing, and the intelligent monitoring component is used for real-time analysis of drilling dynamics.

[0013] Preferably, after the final drilling is completed, the data is exported to the ground analysis system via a data interface, enabling the simultaneous acquisition of multiple key parameters in a single well run, effectively improving the overall measurement efficiency.

[0014] The present invention is further configured such that the drill bit and the bearing assembly are detachably connected, and the drill bit on the outer wall of the drill bit is arranged in a circumferential manner.

[0015] Preferably, the detachable design facilitates subsequent replacement and maintenance of the drill bit by staff based on actual conditions, and the surrounding design effectively improves the overall crushing efficiency.

[0016] The present invention is further configured such that the sensor module includes a triaxial MEMS accelerometer, a temperature sensor, a pressure sensor, and a torque sensor.

[0017] Preferably, the triaxial accelerometer is installed with the X-axis along the drill string tangentially (detecting torsional vibration), the Y-axis along the drill string radially (detecting lateral vibration), and the Z-axis along the drill string axially (detecting axial vibration). The pressure sensor is connected to the outer wall of the housing through a pressure guiding channel. The diaphragm seal ensures that well fluid does not enter the housing. The torque sensor is installed in the annular mounting groove in the middle section of the housing. The output terminals of each sensor are connected to the corresponding input terminals of the signal conditioning and acquisition module through shielded cables.

[0018] The present invention is further configured such that the inner side of the inner tube and the rubber liner is a multi-head helical surface adapted to the rotor body, and the radial distance between the outer wall profile of the inner tube and the inner wall profile of the outer tube is equal everywhere.

[0019] Preferably, by having all the drilling fluid enter the spiral meshing cavity between the stator body and the rotor body, the high-pressure drilling fluid in the power assembly forms a pressure difference in the spiral closed flow channel between the stator body and the rotor body with equal wall thickness, driving the rotor body to perform planetary eccentric rotation, thus converting the liquid pressure energy into rotational mechanical energy.

[0020] The present invention is further configured such that the supporting rib is an arc-shaped rib structure, and the supporting rib is evenly distributed in multiple groups along the axial direction of the stator body.

[0021] Preferably, the support ribs adopt an arc-shaped rib structure, which can fully fit with the inner and outer tube surfaces, increase the contact area, eliminate stress sharp corners, and the support ribs are evenly distributed in multiple groups along the stator axis, so that the stator forms a continuous beam stress structure, which can evenly distribute the load and reduce bending moment and deformation.

[0022] The invention is further configured such that the outer tube is cylindrical in shape and has a smooth surface on its outer wall.

[0023] Preferably, the cylindrical shape facilitates downward movement with the drill bit, while the smooth surface effectively reduces the sliding friction of the outer tube during drilling.

[0024] In summary, the present invention has the following main beneficial effects: 1. The present invention arranges the stator body in a double tube configuration. The outer wall of the outer tube is a traditional cylindrical steel tube, and the inner wall is a pre-formed special-shaped tube with equal wall thickness. Support ribs are connected between the inner and outer tubes, so that the whole forms a continuous beam-type load support. When the rotor body rotates rapidly inside the stator body, the multi-point support of the support ribs optimizes the load distribution, reduces bending deformation and operating vibration, thereby greatly improving coaxiality and structural rigidity. 2. This invention provides a rubber liner on the inner wall of the inner tube, which precisely matches the contour of the inner tube to achieve a uniform wall thickness arrangement of the rubber layers. This ensures uniform heat dissipation without local heat accumulation, delays rubber aging, and the gap between the inner and outer tubes serves as a heat dissipation channel for quickly dissipating the frictional heat generated during stator operation. Combined with the uniform wall thickness structure, this fundamentally prevents overheating and aging of the stator rubber. Furthermore, the multi-point fusion between the inner and outer tubes provides only rigid support and does not block the gap, maintaining a continuous and unobstructed heat dissipation path, allowing heat to be dissipated evenly without local heat accumulation. 3. This invention features an intelligent detection component at one end of the drill bit. The sensor module senses multiple parameters, the signal conditioning and acquisition module digitizes the signal, the embedded processing module analyzes, correlates, compresses, and marks events, and then the large-capacity storage module stores all the data. Finally, after the drill bit is pulled out, the data is exported to the ground analysis system through the data interface. This allows for the simultaneous acquisition of multiple key parameters in a single well run, effectively improving the overall measurement efficiency. Attached Figure Description

[0025] Figure 1 This is a perspective view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of A in the middle; Figure 4 This is a schematic diagram of the stator structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of B in the middle; Figure 6 This is a schematic diagram of the bearing assembly structure of the present invention; Figure 7 This is a schematic diagram of the drill bit structure of the present invention; Figure 8 This is a schematic diagram showing the connection between the sensor module and the signal conditioning and acquisition module of the present invention; Figure 9 This is a logic block diagram of signal processing and data storage of the present invention.

[0026] Explanation of reference numerals in the attached figures: 1. Power assembly; 2. Transmission assembly; 3. Bearing assembly; 4. Rotor body; 5. Stator body; 501. Rubber liner; 502. Outer tube; 503. Support rib; 504. Inner tube; 6. Drill bit; 7. Intelligent monitoring assembly. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The embodiments of the present invention will now be described.

[0029] Example 1: Please refer to Figures 1-7 The diagram shows an integrated structure for a high-torque intelligent motor in ultra-deep wells, comprising a power component 1, a transmission component 2, a bearing component 3, a heat dissipation mechanism, a support mechanism, and a rotation mechanism. The bypass valve, equal-wall-thickness stator-rotor motor, ultra-long universal joint, transmission shaft, and TC bearing assembly are sequentially threaded and assembled using a screw drill bit. The assembly is then connected to the bottom of the lower drill string. The drill bit is installed at the lower end of the transmission shaft. When the surface mud pump is started, high-pressure drilling fluid flows down along the inner hole of the drill string. The bypass valve closes, and all the mud enters the lower power section without leakage. Since the power component 1 includes a stator body 5 and a rotor body 4, and cavities are provided in the stator body 5 and rotor body 4, all the drilling fluid enters the helical meshing cavity of the stator body 5 and rotor body 4. The high-pressure drilling fluid in the power component 1 forms a pressure difference within the helical closed flow channel of the equal-wall-thickness stator body 5 and rotor body 4, driving the rotor body 4 to rotate eccentrically in a planetary manner, converting liquid pressure energy into rotational mechanical energy. Because the stator body 5 itself is a double-tube configuration, it includes an outer tube 502 and an inner tube 504. The outer wall of the outer tube 502 is a traditional cylindrical steel tube, and the inner wall is a pre-formed irregular-shaped tube of uniform wall thickness. Supporting ribs 503 connect the inner tube 504 and the outer tube 502, forming a continuous beam-type load-bearing support. When the rotor body 4 rotates rapidly inside the stator body 5, the multi-point support of the supporting ribs 503 optimizes the load distribution. Furthermore, the supporting ribs 503 are arc-shaped rib structures, which can connect with the outer tube 502... 2. It fully fits the surface of the inner tube 504, increases the contact area, eliminates stress sharp corners, improves the connection strength and bending resistance, avoids cracking of the rubber layer, and does not block the heat dissipation channel of the interlayer. Its support ribs 503 are evenly distributed in multiple groups along the axial direction of the stator body 5, so that the stator body 5 forms a continuous beam stress structure, which can evenly distribute the load, reduce bending moment and deformation, and limit the coaxiality of the tube body throughout the process, making the overall deformation uniform, effectively improving the fatigue resistance of the structure and the adaptability to skew and complex well conditions. Meanwhile, a rubber liner 501 is provided on the inner wall of the inner tube 504. The rubber liner 501 is precisely matched with the contour of the inner tube 504 to achieve the same wall thickness of the rubber layer, ensuring uniform heat dissipation without local heat accumulation, delaying rubber aging. Furthermore, the gap between the inner tube 504 and the outer tube 502 is a heat dissipation channel, which is used to quickly dissipate the frictional heat generated during the operation of the stator body 5. Combined with the structure of equal wall thickness, it fundamentally prevents the overheating and aging of the stator rubber. Moreover, the multi-point fusion between the inner tube and the outer tube only provides rigid support and will not block the gap, maintaining a continuous and unobstructed heat dissipation path, allowing heat to be dissipated evenly without local heat accumulation.

[0030] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 The transmission assembly 2 includes a flexible shaft, a universal joint, and a shaft. A universal joint is connected to one end of the flexible shaft, and a shaft is connected to one end of the universal joint. The shaft is connected to one end of the bearing assembly 3. Under the action of the flexible shaft, the universal joint, and the shaft, the eccentric motion of the rotor body can be converted into concentric motion, and the torque and speed can be transmitted to the bearing assembly 3.

[0031] For details regarding the above embodiments, please refer to [link / reference]. Figure 2 The inner tube 504 and the inner side of the rubber liner 501 are multi-head helical curved surfaces adapted to the rotor body 4. The radial distance between the outer wall contour of the inner tube 504 and the inner wall contour of the outer tube 502 is equal everywhere. The drilling fluid enters the helical meshing cavity of the stator body 5 and the rotor body 4. The high-pressure drilling fluid in the power assembly forms a pressure difference in the helical closed flow channel of the stator body 5 and the rotor body 4 with equal wall thickness, which drives the rotor body 4 to perform planetary eccentric rotation, converting the liquid pressure energy into rotational mechanical energy.

[0032] Example 2: Please refer to Figure 8 and Figure 9 The integrated structure of a high-torque intelligent motor for ultra-deep wells shown is similar to that of Embodiment 1. One end of the bearing assembly 3 is connected to the drill bit 6, and an intelligent monitoring assembly 7 is set inside the drill bit 6. The intelligent monitoring assembly 7 includes a sensor module, a signal conditioning and acquisition module, an embedded processing module, a large-capacity storage module, a power supply module, and a pressure-resistant sealed housing. The sensor module consists of a triaxial MEMS accelerometer, a temperature sensor, a pressure sensor, and a torque sensor. The triaxial accelerometer is installed with the X-axis along the drill string tangentially (detecting torsional vibration), the Y-axis along the drill string radially (detecting lateral vibration), and the Z-axis along the drill string axially (detecting axial vibration). The pressure sensor is connected to the outer wall of the housing through a pressure guide channel, and a diaphragm seal ensures that well fluid does not enter the housing. The torque sensor is installed in the annular mounting groove in the middle section of the housing. The output terminals of each sensor are connected to the corresponding input terminals of the signal conditioning and acquisition module through shielded cables. With a single well run, six key parameters, including triaxial vibration, high-frequency torsional vibration, temperature, rotational speed, annular pressure, and torque, can be acquired simultaneously. Compared with existing single-parameter measurement tools, the amount of information is increased by more than 5 times. The signal conditioning and acquisition module consists of a multi-channel instrumentation amplifier, an anti-aliasing low-pass filter and a band-pass filter, and a multi-channel synchronous ADC. The instrumentation amplifier amplifies and differentially drives the weak signals from the sensor. The filter separates the frequency bands according to the channel type. The ADC samples the eight-channel signals synchronously at a sampling rate of 1kHz. The digitized data is transmitted to the embedded processing module via the SPI bus. Embedded processing module: Composed of a high-performance embedded processor and off-chip SDRAM, the processor performs the following functions: synchronous sampling control and data buffering, triaxial vibration time-domain and frequency-domain analysis (STFT), high-frequency torsional vibration signal detection and parameter calculation, execution of multi-parameter correlation analysis algorithm, event tag generation and data compression encoding, and storage module write control. The processor receives ADC data through the SPI bus and writes the processing results to the storage module through DMA. High-capacity storage module: composed of industrial-grade SLC NAND Flash memory and storage controller; embedded processing module writes compressed raw sampling data and analysis results to storage module through DMA channel; waterproof data interface is provided on the outside of tool housing, and the storage controller is connected inside the interface. After drilling, all data can be quickly exported to the ground analysis system through this interface; Power module: Composed of a high-temperature resistant lithium battery pack and a power management chip, the power module supplies power to each module. The power management chip implements module-level sleep control according to the instructions of the embedded processing module. In non-drilling conditions, such as drilling down, drilling up, and connecting a single wire, the sensor and ADC are automatically switched to low-power mode, retaining only the clock wake-up function to maximize the battery life. Pressure-resistant sealed housing: It consists of a high-strength corrosion-resistant alloy steel housing, a metal sealing O-ring and upper and lower connecting threads. The inside of the housing is a mounting chamber for the sensor module, signal conditioning and acquisition module, embedded processing module, large-capacity storage module and power supply module. Each module is fixed to the inner wall of the housing by studs.

[0033] For details regarding the above embodiments, please refer to [link / reference]. Figure 9First, it integrates a triaxial MEMS accelerometer with a range of ±500g and a bandwidth of ≥1000Hz, a temperature sensor with a range of -40℃ to 175℃ and an accuracy of ±0.5℃, a pressure sensor with a range of 0-150MPa and an accuracy of ±0.1%FS, and a torque sensor with a range of 0-50kN·m and an accuracy of ±0.5%FS. All sensors are driven by the same clock source and synchronously acquired at a sampling rate of 1kHz to ensure that the time alignment accuracy between each parameter is ≤1ms. Secondly, the distance between the sensor's sensitive surface and the drill bit's cutting structure is ≤0.3m. Since there are no threaded connections or stabilizers between the sensor and the drill bit, the attenuation rate of high-frequency torsional vibration signals and triaxial vibration signals transmitted to the sensor is ≤5%, ensuring that the collected signals accurately reflect the vibration and load conditions at the drill bit. Similarly, the tool can also be embedded inside downhole tools such as shock absorbers and screw motors to monitor the vibration and load on key parts of these tools. Subsequently, the tangential component output of the triaxial accelerometer is bandpass filtered by a dedicated signal conditioning circuit to extract the high-frequency torsional vibration signal. The embedded processor performs short-time Fourier transform (STFT) and peak detection algorithm on the filtered signal to calculate the main frequency, amplitude and energy density of the high-frequency torsional vibration in real time. The detection results and the original vibration data are stored together in a large-capacity storage module for later playback and in-depth analysis. Then, the correlation coefficient between total vibration energy and annular pressure is used to identify drill bit stuck risk events when an abnormal increase in annular pressure is accompanied by an increase in vibration energy; the ratio of high-frequency torsional amplitude to torque is used to identify cutting tooth breakage risk events when the ratio exceeds a set threshold; the coupling relationship between temperature change rate and vibration spectrum shift is used to identify abnormal drill bit cutting efficiency and drill bit wear status. All correlation analysis results are stored together with the original sampling data, and event tags are embedded in the stored data to facilitate quick retrieval of key events afterward. Finally, the embedded processor compresses all the analysis results and raw sampling data and writes them into a large-capacity NAND Flash storage module. After the entire drilling cycle is completed, all the data is quickly exported to the ground data analysis system through the waterproof data interface on the outside of the tool. The ground software plays back the raw data, performs spectrum analysis, plots multi-parameter correlation curves, and traces back risk events, providing drilling engineers with a complete downhole condition diagnosis report and optimization suggestions.

[0034] In practical operation, the present invention works as follows: During use, all drilling fluid enters the spiral meshing cavity between the stator body 5 and the rotor body 4. The high-pressure drilling fluid in the power assembly 1 forms a pressure difference in the spiral closed flow channel between the stator body 5 and the rotor body 4 with equal wall thickness, driving the rotor body 4 to perform planetary eccentric rotation, converting the liquid pressure energy into rotational mechanical energy. Since the stator body 5 is arranged in a double-pipe configuration, with an outer pipe 502 and an inner pipe 504 respectively, a support rib 503 is connected between the inner pipe 504 and the outer pipe 502, so that the whole forms a continuous beam-type force support. When the rotor body 4 rotates rapidly inside the stator body 5, the multi-point support of the support rib 503 optimizes the load distribution, reduces bending deformation and operating vibration. Then, the eccentric motion of the rotor body 4 is converted into concentric motion through the transmission assembly 2 and the torque and speed are transmitted to the bearing assembly 3. Under the action of the bearing assembly 3, the rotor body 4 continues to rotate and break the formation rock. The rock cuttings are carried by the drilling fluid and return to the ground along the well wall annulus, realizing continuous directional drilling.

[0035] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An integrated structure for a high-torque intelligent motor in an ultra-deep well, comprising a power component (1), a transmission component (2), and a bearing component (3), wherein one end of the power component (1) is connected to the transmission component (2), and one end of the transmission component (2) is connected to the bearing component (3), characterized in that: The power assembly (1) is provided with a stator body (5) and a rotor body (4), and a cavity is provided between the stator body (5) and the rotor body (4). The stator body (5) is a double tube, namely an inner tube (504) and an outer tube (502). The inner wall of the outer tube (502) is a pre-formed irregular tube with equal wall thickness, and an array of support ribs (503) is provided between the inner tube (504) and the outer tube (502). The inner wall of the inner tube (504) is provided with a rubber liner (501), and the contour of the inner tube (504) is precisely matched at the rubber liner (501).

2. The integrated structure of an ultra-deep well high-torque intelligent motor according to claim 1, characterized in that: The transmission assembly (2) includes a flexible shaft, a universal joint and a shaft. One end of the flexible shaft is connected to the universal joint, and one end of the universal joint is connected to the shaft, which is connected to one end of the bearing assembly (3).

3. The integrated structure of an ultra-deep well high-torque intelligent motor according to claim 1, characterized in that: One end of the bearing assembly (3) is connected to a drill bit (6), and an intelligent monitoring component (7) is installed inside the drill bit (6).

4. The integrated structure of an ultra-deep well high-torque intelligent motor according to claim 3, characterized in that: The intelligent monitoring component (7) includes a sensor module, a signal conditioning and acquisition module, an embedded processing module, a large-capacity storage module, a power supply module and a pressure-resistant sealed housing. The intelligent monitoring component (7) is used for real-time analysis of drilling dynamics.

5. The integrated structure of an ultra-deep well high-torque intelligent motor according to claim 3, characterized in that: The drill bit (6) and the bearing assembly (3) are detachably connected, and the drill bit on the outer wall of the drill bit (6) is arranged in a circumferential manner.

6. The integrated structure of an ultra-deep well high-torque intelligent motor according to claim 4, characterized in that: The sensor module includes a triaxial MEMS accelerometer, a temperature sensor, a pressure sensor, and a torque sensor.

7. The integrated structure of an ultra-deep well high-torque intelligent motor according to claim 1, characterized in that: The inner tube (504) and the inner side of the rubber liner (501) are multi-head helical surfaces adapted to the rotor body (4), and the radial distance between the outer wall profile of the inner tube (504) and the inner wall profile of the outer tube (502) is equal everywhere.

8. The integrated structure of an ultra-deep well high-torque intelligent motor according to claim 1, characterized in that: The support rib (503) is an arc-shaped rib structure, and the support rib (503) is evenly distributed in multiple groups along the axial direction of the stator body (5).

9. The integrated structure of an ultra-deep well high-torque intelligent motor according to claim 1, characterized in that: The outer tube (502) is cylindrical in shape and has a smooth surface on its outer wall.

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