A near-drill-bit measuring motor maintenance device and maintenance method

Abstract

The present invention provides a near-drill bit measuring motor maintenance device, including a frame, a clamping device, a signal receiving part, a signal simulation part, a manipulator and a control unit. The frame is provided with a signal simulation part at one end and a signal receiving part at the other end. A clamping device is provided between the signal simulation part and the signal receiving part. A power output shaft is rotatably provided on the signal receiving part. The power output shaft is a floating type, and the angle between the axis and the horizontal direction is a, and the floating range of a is 0≤a≤7°. The power output shaft is provided with a connector. The measuring motor is placed on the clamping device, and one end is connected to the connector by a thread. A control unit is connected to one side of the signal receiving part to control the maintenance of the measuring motor and receive the transmission data of the measuring motor. A manipulator for detection is provided on one side of the clamping device. The invention can simulate the ideal downhole state corresponding to the measuring motor and improve the efficiency and accuracy of fault detection of the measuring motor.

Description

Technical Field

[0001] The invention relates to the field of maintenance of logging while drilling equipment, and in particular to a maintenance device and a maintenance method for a near-drill bit logging motor. Background Art

[0002] The near-bit geological guidance system has three major functions: measurement, transmission and guidance. The system includes: drill bit, measurement and transmission motor (including near-bit measurement instrument assembly), wireless short transmission, MWD / LWD measurement system, and ground processing system. The measurement and transmission motor is a fully instrumented guidance motor, which is directly connected to the drill bit. It is a cabin specially designed to carry speed meters, gamma meters and other instruments, batteries and circuits. The sensor components installed in the near-bit measurement instrument assembly measure the geological parameters such as gamma and resistivity near the drill bit and engineering parameters such as well inclination and tool face angle. The measured near-bit parameter data is transmitted across the measurement and transmission motor to the wireless receiving system through audio or electromagnetic wave wireless short transmission.

[0003] Since the operating environment of the measuring motor is relatively harsh, it is easy for underground mud to fill the gaps of the measuring motor and cause failure, so it needs frequent maintenance and inspection. In the existing technology, the measuring motor is repaired manually, and the operation process is complicated and prone to improper operation, which leads to frequent problems with drilling equipment. In the process of fault repair in engineering, how to simulate the underground environment for automatic maintenance becomes more and more important. Summary of the invention

[0004] In view of this, the present invention aims to provide a near-bit measuring and transmitting motor maintenance device and maintenance method, which can simulate the downhole environment to perform maintenance and inspection on the use function of the measuring and transmitting motor.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A near-drill bit measuring and transmission motor maintenance device comprises a frame, a clamping device, a signal receiving part, a signal simulation part, a manipulator and a control unit, wherein a signal simulation part is arranged at one end of the frame, and a signal receiving part is arranged at the other end, a clamping device is arranged between the signal simulation part and the signal receiving part, a power output shaft is rotatably arranged on the signal receiving part, the power output shaft is a floating type, and the angle between the axis and the horizontal direction is a, and the floating range of a is 0≤a≤7°, a connector is arranged on the power output shaft, and the measuring and transmission motor is placed on the clamping device, and one end thereof is connected to the connector by a thread; a control unit is connected to one side of the signal receiving part to control the maintenance of the measuring and transmission motor and receive the transmission data of the measuring and transmission motor, and a manipulator for detection is arranged on one side of the clamping device.

[0007] Furthermore, the clamping device includes a first clamping part and a second clamping part, the first clamping part and the second clamping part are respectively arranged close to the signal receiving part and the signal simulation part, and the bottom is fixed on the frame, the first clamping part and the second clamping part are provided with a rolling support frame, and a plurality of rollers are evenly distributed along the circumferential direction on the rolling support frame, and the rolling support frame is rotatably connected to the measuring and transmitting motor.

[0008] Furthermore, the first clamping part includes a clamping block and an adjusting block, the clamping block is rotatably connected to the adjusting block and locked by a locking bolt, a lead screw is vertically arranged on the frame, one end of the lead screw is passed through the adjusting block, and the other end is connected to the driving part, the adjusting block and the lead screw are connected by threaded cooperation, and a guide column is also vertically arranged on the frame, guide blocks are fixedly connected to both ends of the adjusting block, and the guide block is slidably connected to the guide column, and the structure and connection method of the second clamping part and the first clamping part are the same as those of the first clamping part.

[0009] Furthermore, an arc-shaped groove is provided on the upper portion of the clamping block, and the rolling support frame is arranged in the arc-shaped groove, and the rolling support frame is also arc-shaped.

[0010] Furthermore, a downhole original signal simulation device is provided in the signal simulation unit to simulate an ideal downhole state and send a simulation signal to an instrument for measuring and transmitting motors.

[0011] Furthermore, the signal receiving unit is provided with a radio signal receiver to send the data processed by the instrument in the measuring and transmitting motor to the control unit.

[0012] Furthermore, an electromagnetic chuck is provided at the end of the manipulator to clamp a measuring pen and detect the insulation and resistance of all antennas on the measuring motor.

[0013] Furthermore, a circuit detection module and a core performance evaluation module are arranged inside the control unit. The circuit detection module includes a resistance tester and an oscilloscope. The resistance tester detects the resistance when the manipulator clamps the test pencil and contacts the test motor. The oscilloscope receives the data signal sent by the signal receiving unit, and sends the processed data signal to the core performance evaluation module to evaluate the performance of the core components.

[0014] Furthermore, a method for repairing a near-bit measuring motor is provided, which is applied to any of the above-mentioned near-bit measuring motor repair devices, and the steps are as follows:

[0015] S1: Separate the measuring motor to be repaired from the near-bit geosteering system, remove impurities on the measuring motor, and ensure that each antenna has good conductivity;

[0016] S2: placing the measuring motor on the clamping device of the device, with one end facing the signal simulation part and the other end facing the signal receiving part;

[0017] S3: Connect the measuring and transmitting motor to the power output shaft through threads, and adjust the angle a between the axis of the power output shaft and the horizontal direction according to the type of the measuring and transmitting motor;

[0018] S4: The driving unit drives the lead screw to rotate, adjusts the support height of the first clamping unit and the second clamping unit, and fine-tunes the angle of the clamping block relative to the adjustment block by tightening the bolt, so that the rolling support frame of the clamping block fits with the outer surface of the measuring and transmitting motor to support it;

[0019] S4: The manipulator clamps the measuring pen of the resistance tester, controls the manipulator through the control unit to detect all antennas on the measuring and transmitting motor, transmits the detection signal to the control unit, and sends the detection result to the core performance evaluation module for comprehensive processing;

[0020] S5: The signal simulation unit transmits an analog signal to the instrument for measuring the transmission motor. The signal receiving unit receives the feedback signal and sends the signal to the resistance tester and oscilloscope in the control unit. The resistance tester and oscilloscope detect the signal and send the detection result to the core performance evaluation module to evaluate all circuits.

[0021] The near-drill-bit measuring and transmission motor maintenance device and maintenance method mentioned in the present invention have the following beneficial effects compared with the prior art:

[0022] (1) The present invention can simulate the ideal downhole state corresponding to the measuring motor, evaluate the comprehensive performance of the measuring motor clamped on the device, evaluate multiple important performances of the measuring sub, improve the efficiency and accuracy of fault detection, realize automatic maintenance, save the complicated operation process of the staff, and reduce the accidents of the drilling equipment;

[0023] (2) The power output shaft of the present invention is of floating type, the angle between the axis and the horizontal is adjustable, the clamping device can be raised and lowered, and the angle of the clamping block is adjustable, which can meet the detection of simulating different downhole conditions with the same measuring and transmitting motor, and is also suitable for the detection of measuring and transmitting motors of different models. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 It is a structural schematic diagram of the near-drill-bit measuring and transmission motor inspection and repair device according to an embodiment of the present invention when inspecting the measuring and transmission motor;

[0026] Figure 2 This is a schematic diagram of the structure of the near-drill-bit measuring and transmission motor maintenance device according to an embodiment of the present invention;

[0027] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle;

[0029] Figure 5 This is a schematic diagram of the connection structure between the clamping device and the frame according to an embodiment of the present invention;

[0030] Figure 6 It is a side schematic diagram of the near-drill-bit measuring and transmission motor maintenance device according to an embodiment of the present invention;

[0031] Figure 7 A schematic diagram of the external structure of a signal receiving unit according to an embodiment of the present invention;

[0032] Figure 8 It is a schematic diagram of a power output shaft driving assembly and a structure for adjusting the angle between the power output shaft axis and the horizontal direction according to an embodiment of the present invention;

[0033] Fig. 9 It is a partial schematic diagram of the shell of an embodiment of the present invention. Description of the drawings:

[0035] 1. Control unit; 2. Signal receiving unit; 20. Housing; 201. Adjustment shaft hole; 3. Power output shaft; 31. Drive assembly; 32. Upper support plate; 33. Bearing; 34. Adjustment wheel shaft; 341. Second bevel gear; 342. Handle; 343. Adjustment shaft; 3431. Stopper; 35. Rotating shaft; 351. Shaft; 352. First bevel gear; 36. Lower support plate; 37. Upper connection part; 38. Lower connection part; 4. Connection Joint; 5. Clamping device; 51. First clamping part; 510. Locking bolt; 511. Rolling support frame; 512. Roller; 513. Clamping block; 514. Adjustment block; 515. Guide block; 516. Guide column; 517. Driving part; 518. Lead screw; 519. Threaded hole; 52. Second clamping part; 7. Manipulator; 71. Electromagnetic chuck; 8. Signal simulation part; 9. Measurement and transmission motor; 10. Frame; 101. Work table. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0037] In the present invention, the descriptions involving "first", "second", "upper", "lower", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include at least one of the features, and the directional words such as "upper" and "lower" shall be based on the actual placement of the device. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the technical solutions between the embodiments can be combined, they are all within the protection scope required by the present invention.

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0039] Specific implementation examples Figures 1 to 6 As shown, a near-drill bit measuring and transmitting motor maintenance device is used to perform performance detection on the measuring and transmitting motor 9 for maintenance, including a frame 10, a clamping device 5, a signal receiving part 2, a signal simulation part 8, a manipulator 7 and a control unit 1. A workbench is arranged on the frame 10, and the upper surface of the workbench is a workbench surface 101. The signal simulation part 8 is arranged at one end of the workbench surface 101, and the signal receiving part 2 is arranged at the other end. The signal simulation part 8 and the signal receiving part 2 are arranged vertically upward from the workbench surface 101, and the clamping device 5 is arranged between the two. A power output shaft 3 is rotatably arranged on the signal receiving part 2, and the power output shaft 3 is a floating type, and the angle between the axis and the horizontal direction is a, and the floating range of a is 0≤a≤7°. This arrangement can simulate the vertical well drilling. Inclined environment, since the smaller the well inclination is, the better when drilling a straight well, the power output shaft 3 is controlled within a smaller well inclination range. The measurement and transmission motor 9 after maintenance is more accurate and the failure rate is reduced. The power output shaft 3 is provided with a connector 4, and the measurement and transmission motor 9 is placed on the clamping device 5, one end of which is connected to the connector 4 by a thread; a control unit 1 is provided on one side of the signal receiving part 2, and a display screen is provided on the control unit 1, which can be used for human-computer interaction and display of processed data; a manipulator 7 for detection is provided on one side of the clamping device 5, and the control unit 1 is connected to the signal simulation part 8, the signal receiving part 2 and the manipulator 7, and can control the signal simulation part 8 to send out an analog signal, control the maintenance of the measurement and transmission motor 9, and receive the data transmitted by the measurement and transmission motor 9 to the signal receiving part 2.

[0040] Furthermore, the clamping device 5 includes a first clamping portion 51 and a second clamping portion 52, and the first clamping portion 51 and the second clamping portion 52 are respectively arranged close to the signal receiving portion 2 and the signal simulation portion 8, and are used to support the two ends of the measuring and transmitting motor 9 to make the support more stable. The bottoms of the first clamping portion 51 and the second clamping portion 52 are fixed on the working table 101 of the frame 10, and the first clamping portion 51 and the second clamping portion 52 are provided with a rolling support frame 511, and a plurality of rollers 512 are evenly distributed on the rolling support frame 511 along the circumferential direction. The rolling support frame 511 is rotatably connected to the measuring and transmitting motor 9, and the measuring and transmitting motor 9 rotates when driven by the power output shaft 3. The rolling support frame 511 supports the measuring and transmitting motor 9 and reduces the friction when it rotates.

[0041] Furthermore, the first clamping part 51 includes a clamping block 513 and an adjusting block 514, the adjusting block 514 is arranged vertically on the work table 101, the clamping block 513 is placed above the adjusting block 514, the clamping block 513 and the adjusting block 514 are rotatably connected, the rotation axis of the clamping block 513 and the adjusting block 514 is arranged horizontally and perpendicular to the axis of the power output shaft 3, the clamping block 513 and the adjusting block 514 are rotated to adjust the position and then locked by the locking bolt 510, a lead screw 518 is vertically arranged on the work table 101 of the frame 10, one end of the lead screw 518 is inserted into the adjusting block 514, and the other end is connected to a driving part 517, the driving part 517 is arranged at the lower part of the work table 101, includes a motor and a reducer, and can drive the lead screw 518 to rotate, the adjusting block 514 is connected to the lead screw 518 by threaded cooperation, a threaded hole 519 is vertically opened at the lower part of the adjusting block 514, and the lead screw 518 The guide column 516 is vertically arranged on the working table 101 of the frame 10 and is inserted into the threaded hole 519. The guide blocks 515 are fixedly connected to the two ends of the adjustment block 514. The guide blocks 515 are slidably connected to the guide columns 516. The upper part of the clamping block 513 is provided with an arc-shaped groove. The rolling support frame 511 is arranged in the arc-shaped groove. The rolling support frame 511 is also arc-shaped. The groove of the clamping block 513 is coaxially arranged with the rolling support frame 511. The structure and connection method of the second clamping part 52 and the first clamping part 51 are the same as those of the first clamping part 51. The first clamping part 51 and the second clamping part 52 are arranged to realize lifting and lowering. The clamping block 513 can adjust the angle of the rolling support frame 511, so that after the measuring and transmitting motor 9 is placed on the rolling support frame 511, the outer surface of the measuring and transmitting motor 9 can contact with each roller 512, and the axis of the rolling support frame 511 is parallel to the axis of the measuring and transmitting motor 9, so the support is more stable.

[0042] Since the measuring and transmitting motor 9 is equipped with an accelerometer, a gamma meter and other instruments, a power supply module is needed to power the internal instruments, and an external antenna is needed to transmit and receive signals. Therefore, during maintenance, it is necessary to perform resistance detection on the antenna, determine the insulation of the signal transmitting antenna, and detect the use status of each instrument to ensure the normal operation of each instrument.

[0043] Furthermore, a downhole original signal simulation device is provided in the signal simulation unit 8 to simulate an ideal downhole state and send a simulation signal to the instrument of the measuring and transmitting motor 9 .

[0044] Furthermore, a radio signal receiver is provided in the signal receiving unit 2 to send the data processed by the measuring and transmitting motor 9 instrument to the control unit 1 .

[0045] Furthermore, an electromagnetic chuck 71 is provided at the end of the manipulator 7 to clamp the measuring pen and detect the insulation of all antennas on the measuring motor 9 and the resistance of the antenna. The antenna on the measuring motor 9 is a radio transmitting antenna with dual functions. It is a signal excitation source when receiving analog signals and a transmitter when wirelessly sending measurement data to the signal receiving unit 2.

[0046] Furthermore, a circuit detection module and a core performance evaluation module are provided inside the control unit 1. The circuit detection module includes a resistance tester and an oscilloscope. When the manipulator 7 clamps the test pencil and contacts the measuring and transmitting motor 9, the resistance tester performs resistance detection on the antenna, and the oscilloscope receives the data signal sent by the signal receiving unit 2, and sends it to the core performance evaluation module after processing to evaluate the performance of the core components.

[0047] Further, such as Figures 7 to 9As shown, the signal receiving unit 2 includes a housing 20, a radio signal receiver is arranged inside the housing 20 (not shown in the figure), a power output shaft drive assembly 31 and an angle adjustment structure between the axis and the horizontal direction are also arranged in the housing 20, an upper support plate 32 and a lower support plate 36 are arranged in the housing 20, a drive assembly 31 is fixed on the upper support plate 32, a power output shaft 3 extends from the end of the drive assembly 32, and the drive assembly 32 includes a motor and a reduction device to provide a driving force for the rotation of the power output shaft 3. The output shaft 3 is arranged on one side of the housing 20 and is rotatably connected to the housing 20 through a bearing 33. An upper connecting portion 37 is provided at the lower part of the upper support plate 32, and a lower connecting portion 38 is provided at the upper part of the lower support plate 36. The upper connecting portion 37 and the lower connecting portion 38 are rotatably connected. Preferably, a rotating shaft 35 is arranged between the upper connecting portion 37 and the lower connecting portion 38, and the rotating shaft 35 is fixed to the upper connecting portion 37, and the rotating shaft 35 is rotatably connected to the lower connecting portion 38. The rotating shaft 35 is connected to the adjusting wheel shaft 3 arranged on the side of the housing 20 through a bevel gear structure. The adjusting wheel shaft 34 rotates to drive the rotating shaft 35 to rotate, which can drive the upper support plate 32 to rotate at the same time, so as to adjust the angle a between the axis of the power output shaft 3 and the horizontal direction. The rotating shaft 35 includes a shaft portion 351 and a first bevel gear 352 fixedly arranged at one end of the shaft portion 351. The adjusting wheel shaft 34 includes a handle 342, an adjusting shaft 343 and a second bevel gear 341. The second bevel gear 352 is arranged in the housing 20 and meshes with the first bevel gear 352. The handle 342 is arranged outside the housing 20 for To adjust the rotation angle, an adjusting shaft hole 201 is provided on the side of the shell 20 opposite to the direction in which the power output shaft 3 passes through, and an arc-shaped notch is extended circumferentially from the adjusting shaft hole 201. A stopper 3431 is provided on the handle 342. The stopper 3431 is located in the arc-shaped notch and rotates along the arc-shaped notch, so as to adjust the rotation angle of the bevel gear within the arc range. This arrangement can ensure the rotation range of the inclination angle of the power output shaft; the preferred bearing 33 is a self-aligning bearing, which can adapt to the change of the angle a between the axis of the power output shaft 3 and the horizontal direction.

[0048] Furthermore, a method for repairing a near-bit measuring motor is provided, which is applied to any of the above-mentioned near-bit measuring motor repair devices, and the steps are as follows:

[0049] S1: Separate the measuring and transmission motor 9 to be repaired from the near-drill-bit geological steering system, and remove impurities on the measuring and transmission motor 9 to ensure that each antenna has good conductivity;

[0050] S2: placing the measuring and transmitting motor 9 on the clamping device 5 of the device, with one end thereof facing the signal simulation part 8 and the other end facing the signal receiving part 2;

[0051] S3: Connect the measuring and transmission motor 9 to the connector 4 of the power output shaft 3 through threads, rotate the adjusting wheel shaft 34 on the housing 20, and adjust the angle a between the axis of the power output shaft 4 and the horizontal direction according to the type of the measuring and transmission motor 9 and the well inclination environment; the power output shaft 3 can be connected to any type of measuring and transmission motor 9 for power output;

[0052] S4: The driving part 517 drives the lead screw 518 to rotate, adjusts the support height of the first clamping part 51 and the second clamping part 52, and fine-tunes the angle of the clamping block 513 relative to the adjustment block 514 by the locking bolt 510, so that the rolling support frame 511 of the clamping block 513 fits with the outer surface of the measuring and transmitting motor 9 to support it;

[0053] S4: the manipulator 7 holds the measuring pen, and the control unit 1 controls the manipulator 7 to detect all antennas on the measuring motor 9, and transmits the detection signal to the resistance tester of the control unit 1. The resistance tester transmits the detection result to the core performance evaluation module for comprehensive processing, and the display of the control unit 1 displays the result. This step is used to detect the insulation of the antenna and the resistance performance of the antenna;

[0054] S5: The signal simulation unit 8 transmits analog signals to the accelerometer, gamma meter and other instruments of the measuring motor 9. The signal receiving unit 2 receives the feedback signal and sends the signal to the oscilloscope in the control unit 1. The oscilloscope detects the signal and sends the detection result to the core performance evaluation module. All circuits are evaluated and the display of the control unit 1 displays the result. This step detects the usage status of each instrument.

[0055] Except for the bottom hole temperature which cannot be transmitted in real time, all other parameters are transmitted by the radio transmitting antenna to the radio receiving device on the device, and then transmitted to the control unit 1 through the transmission line. The control unit 1 compares the transmitted data with the ideal bottom hole environment and finally evaluates the current performance of the measuring and transmitting motor.

[0056] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A near-drill-bit measuring and transmission motor maintenance device, characterized in that: It includes a frame, a clamping device, a signal receiving part, a signal simulation part, a manipulator and a control unit. The frame is provided with a signal simulation part at one end and a signal receiving part at the other end. A clamping device is provided between the signal simulation part and the signal receiving part. A power output shaft is rotatably provided on the signal receiving part. The power output shaft is a floating type, and the angle between the axis and the horizontal direction is a, and the floating range of a is 0≤a≤7°. The power output shaft is provided with a connector. The measuring and transmitting motor is placed on the clamping device, and one end thereof is connected to the connector by a thread. A control unit is connected to one side of the signal receiving part to control the inspection and maintenance of the measuring and transmitting motor and receive the transmission data of the measuring and transmitting motor. A manipulator for detection is provided on one side of the clamping device. The clamping device comprises a first clamping part and a second clamping part, the first clamping part and the second clamping part are respectively arranged close to the signal receiving part and the signal simulation part, and the bottom is fixed on the frame, the first clamping part and the second clamping part are provided with a rolling support frame, a plurality of rollers are evenly arranged on the rolling support frame along the circumferential direction, and the rolling support frame is rotatably connected to the measuring and transmitting motor; The first clamping part comprises a clamping block and an adjusting block, the clamping block is rotatably connected to the adjusting block and is locked by a locking bolt, a lead screw is vertically arranged on the frame, one end of the lead screw is inserted into the adjusting block, and the other end is connected to a driving part, the adjusting block and the lead screw are connected by threaded cooperation, a guide column is vertically arranged on the frame, guide blocks are fixedly connected to both ends of the adjusting block, and the guide block is slidably connected to the guide column, and the structure and connection method of the second clamping part are the same as those of the first clamping part; The signal simulation unit is provided with an underground original signal simulation device to simulate an ideal underground state and send a simulation signal to an instrument for measuring and transmitting motors.

2. The near-drill-bit measuring motor maintenance device according to claim 1 is characterized in that: An arc-shaped groove is provided on the upper part of the clamping block, and the rolling support frame is arranged in the arc-shaped groove, and the rolling support frame is also arc-shaped.

3. The near-drill-bit measuring motor maintenance device according to claim 1 is characterized in that: The signal receiving part is provided with a radio signal receiver to send the data processed by the instrument in the measuring and transmitting motor to the control unit.

4. The near-drill-bit measuring motor maintenance device according to claim 1 is characterized in that: The end of the manipulator is provided with an electromagnetic chuck for clamping a measuring pen to detect the insulation and resistance of all antennas on the measuring and transmitting motor.

5. The near-drill-bit measuring motor maintenance device according to claim 1 is characterized in that: A circuit detection module and a core performance evaluation module are arranged inside the control unit. The circuit detection module includes a resistance tester and an oscilloscope. The resistance tester detects the resistance when the manipulator clamps the test pencil and contacts the test motor. The oscilloscope receives the data signal sent by the signal receiving unit, and sends the processed data signal to the core performance evaluation module to evaluate the performance of the core components.

6. A method for repairing a near-bit measuring motor, applied to the near-bit measuring motor repair device according to any one of claims 1 to 5, characterized in that: Here are the steps: S1: Separate the measurement and transmission motor to be repaired from the near-bit geosteering system, remove impurities on the measurement and transmission motor, and ensure that each antenna has good conductivity; S2: placing the measuring and transmitting motor on the clamping device of the device, with one end thereof facing the signal simulation part and the other end thereof facing the signal receiving part; S3: Connect the measuring and transmitting motor to the power output shaft through threads, and adjust the angle a between the axis of the power output shaft and the horizontal direction according to the type of the measuring and transmitting motor; S4: The driving unit drives the lead screw to rotate, adjusts the support height of the first clamping unit and the second clamping unit, and fine-tunes the angle of the clamping block relative to the adjustment block by tightening the bolt, so that the rolling support frame of the clamping block fits with the outer surface of the measuring and transmitting motor to support it; S4: The manipulator clamps the measuring pen of the resistance tester, controls the manipulator through the control unit to detect all antennas on the measuring and transmitting motor, transmits the detection signal to the control unit, and sends the detection result to the core performance evaluation module for comprehensive processing; S5: The signal simulation unit transmits an analog signal to the instrument for measuring the transmission motor. The signal receiving unit receives the feedback signal and sends the signal to the resistance tester and oscilloscope in the control unit. The resistance tester and oscilloscope detect the signal and send the detection result to the core performance evaluation module to evaluate all circuits.

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