Device and method for monitoring integrity of mineshaft of produced water reinjection well

Abstract

The invention relates to the field of shaft monitoring equipment, in particular to produced water reinjection well shaft integrity monitoring equipment and a monitoring method. The produced water reinjection well shaft integrity monitoring equipment comprises a monitor, a mounting part A, a rack, a base, a control assembly and a dust removal assembly; a rack is arranged at the upper end of the monitor; a control assembly used for controlling the monitor to move is installed in the middle of the top beam of the rack. The monitor is moved through the control assembly, the monitor at the lower end is linked to gradually move downwards in an annular track mode on the inner side and the outer side of the produced water reinjection well shaft, the conditions of the inner side and the outer side of the produced water reinjection well shaft can be comprehensively monitored only through single monitoring equipment, the earlier-stage purchasing cost of the monitoring equipment is saved, and the monitoring efficiency is improved. Monitoring dead angles are avoided, potential problems can be found in time, an external water source can be connected through the water spraying head on the inner side of the cleaning cavity in the staying period, the water source is pressurized, then the outer side of the monitor is flushed, the accuracy of next monitoring data is guaranteed, and the later maintenance cost of monitoring equipment is saved.

Description

Technical Field

[0001] This invention relates to the field of wellbore monitoring equipment, and more particularly to a wellbore integrity monitoring device and monitoring method for produced water reinjection wells. Background Technology

[0002] Wellbore integrity is a comprehensive solution that utilizes technology, operations, and organizational management to reduce the risk of uncontrollable formation fluid leakage throughout the lifecycle of oil and gas wells. Its core is the establishment of effective wellbore barriers at each stage of the wellbore process. Wellbore integrity management mainly involves acquiring and integrating well integrity-related information through testing and monitoring, conducting risk assessments of potential well failure hazards, implementing targeted well integrity evaluations, and developing reasonable management systems and prevention and control measures to reduce and prevent oil and gas well accidents.

[0003] However, existing monitoring equipment is generally installed at fixed points on the inner and outer walls of the produced water reinjection well. Due to the complex environment of the well, the monitoring is often limited and blind spots are easy to appear. The equipment is also difficult to install when setting up monitoring points, and there are many monitoring points to set up, which greatly increases the monitoring cost.

[0004] Therefore, to address the issues of blind spots and high costs associated with monitoring, a wellbore integrity monitoring device and method for produced water reinjection wells can be designed. Summary of the Invention

[0005] To overcome the problems of blind spots in monitoring and high cost of monitoring equipment.

[0006] The technical solution of this invention is a wellbore integrity monitoring device for produced water reinjection wells, including a monitor, mounting component A, a frame, a base, a control component, and a dust removal component; a frame is installed on the upper end of the monitor; a control component for controlling the movement of the monitor is installed in the middle of the top beam of the frame; the control component includes a rotary motor; a circular control disk is installed at the lower end of the output shaft of the rotary motor; a long strip-shaped operating frame is fixedly connected to the inside of the control disk; a servo motor is installed on the inside of the operating frame near the control disk; a threaded rod and a threaded sleeve are installed at the output end of the servo motor; a moving frame is fixedly connected to the lower end of the threaded rod and the threaded sleeve; a telescopic cylinder is installed inside the moving frame; the control component and the monitor are fixedly installed and fixedly connected by mounting component A; a base is fixedly connected to the lower side of the left and right support rods of the frame; a dust removal component for cleaning the surface of the monitor is installed inside the right support rod of the frame; the dust removal component includes a cleaning chamber; a water spray head is installed at the front end of the inner side of the cleaning chamber; a dryer is installed at the right end of the cleaning chamber; and a water storage chamber is located at the lower right end of the cleaning chamber.

[0007] Preferably, the control component and the monitor are installed and fixed together by mounting component B. Compared with the direct fixing with bolts by mounting component A, mounting component B adopts a split structure that is easy to disassemble, which allows for faster and more convenient switching of monitoring equipment without disassembling the entire structure, thereby reducing operation time and greatly improving the flexibility and adaptability of operation.

[0008] Preferably, mounting component B includes a suspension bracket, adjusting sleeve, clamping rod, positioning plate, positioning groove, limiting hole, limiting rod, and thrust spring; the suspension bracket adopts a "U"-shaped structure; adjusting sleeves are fixedly connected to both ends of the suspension bracket; clamping rods are threadedly connected to the inner side of the adjusting sleeve; a positioning plate is provided on the inner side of the suspension bracket; positioning grooves are opened at both ends of the positioning plate; the shape of the clamping rod block matches the positioning groove; a symmetrical limiting rod is fixedly connected to the clamping rod block on the side of the suspension bracket; symmetrical limiting holes are opened on both sides of the suspension bracket; limiting rods are slidably connected to the inner side of the limiting holes; clamping... A thrust spring is installed on the outside of the rod to prevent the clamping rod from shifting. During installation, the positioning plate is fixed to the mounting surface, and then the suspension bracket carrying the monitoring equipment is inserted into the end of the positioning plate and locked in place. The clamping rods inside the adjusting sleeves on both sides are rotated, and the clamping rods move towards the positioning groove of the positioning plate along the prescribed path of the limiting hole and the limiting rod until the clamping rod locking block is engaged with the positioning groove. After the operator releases the grip, the thrust spring presses against the clamping rod, thus preventing the clamping rod from shifting. This completes the installation of the monitoring equipment. If it is necessary to disassemble the monitoring equipment, the above steps are reversed.

[0009] Preferably, storage slots are provided at the four corners of the lower end of the base; a control cylinder is fixedly connected to the upper end of the storage slot; a ground anchor is fixedly connected to the lower end of the piston rod of the control cylinder; the ground anchor is located inside the storage slot; when encountering muddy ground, the base cannot stably support the upper part, so it is necessary to activate the control cylinders at the four corners of the base. The control cylinder pushes the ground anchor out of the storage slot, deeply inserting it into the ground to improve the stability of the support and effectively prevent the monitoring equipment from tilting or shaking during use.

[0010] Preferably, the upper surface of the base has a long, narrow track groove; a sliding rod is fixedly connected to the inner side of the track groove; a sliding seat with matching sliding holes is slidably connected to the outer side of the sliding rod; a locking plate is fixedly connected to the outer side of the sliding rod; a set of positioning holes is arranged in parallel at the upper end of the base; the threaded holes of the positioning holes and the threaded holes of the locking plate are connected by fixing bolts; when encountering unconventional well shafts, the restrictive structure of the sliding seat and the locking plate can be released, and the operator can push the frame, which moves horizontally along the sliding rod and its restricted path, expanding the monitoring area and capturing the monitoring target, thus increasing the flexibility of operation and monitoring efficiency.

[0011] Preferably, the dust removal assembly also includes a guide plate and a drain hole; the lower end of the cleaning chamber is provided with a guide plate for recycling dripping dirty water; and the right end of the water storage chamber is provided with a drain hole with a sealing plug.

[0012] A monitoring method for the integrity monitoring equipment of a produced water reinjection wellbore, comprising the produced water reinjection wellbore integrity monitoring equipment as described above, and the steps are as follows: Step 1 Preparation: Install the monitor on mounting part A at the lower end of the control component and lock them together with fixing bolts at the four corners. Transport the frame to the wellbore area of ​​the produced water reinjection well and correct the position of the frame so that the top beam of the frame is located at the upper end of the wellbore of the produced water reinjection well, the left and right support columns of the frame are located on both sides of the wellbore of the produced water reinjection well, and the base is in contact with the ground near the wellbore of the produced water reinjection well for stable support. The second step is to start the monitoring equipment: the staff remotely controls the control components to move the monitor. First, the rotating motor drives the control panel to rotate, which in turn moves the monitor at the lower end in a circular trajectory inside the produced water reinjection well. Meanwhile, the telescopic cylinder inside the moving frame pushes the monitor down step by step. After monitoring the situation inside the produced water reinjection well, the telescopic cylinder is driven to lift the monitor. The servo motor drives the threaded rod and threaded sleeve to start running, controlling the lower part to move outward and adjust the position of the monitor. Then, the monitor moves in a circular trajectory outside the produced water reinjection well and moves down step by step to monitor the situation inside and outside the produced water reinjection well. In this way, the sensors and data acquisition inside the monitor can monitor the relevant pressure, temperature, and flow parameters of the well in real time, so as to facilitate subsequent analysis and evaluation of the well's operating status. The third step is the post-monitoring maintenance of the monitoring equipment: After the monitor has completed monitoring of the produced water reinjection well shaft, it is reset. The monitor is reset to the inside of the dust removal component. During this period, the water spray head inside the cleaning chamber can be connected to an external water source. After pressurizing the water source, the outside of the monitor is rinsed, and the side air dryer is used to blow away the residual water droplets in time, ensuring the accuracy of the next monitoring data.

[0013] The beneficial effects of this invention are: Compared to the traditional method of arranging multiple monitoring points inside the wellbore, this invention uses a control component to move the monitor, which then moves in a circular trajectory, gradually descending inside and outside the produced water reinjection well. Only a single monitoring device is needed to comprehensively monitor the inside and outside of the wellbore, saving on initial equipment purchase costs. The sensors and data acquisition unit inside the moved monitor can monitor relevant pressure, temperature, and flow parameters of the wellbore in real time, facilitating subsequent analysis and evaluation of the wellbore's operating status. This avoids monitoring blind spots and helps to promptly identify potential problems. After completing monitoring, the monitor returns to the inside of the dust removal component. During this period, the water spray head inside the cleaning chamber can be connected to an external water source. Pressurized water is used to rinse the outside of the monitor, and a side-mounted air dryer promptly dries any remaining water droplets, ensuring the accuracy of subsequent monitoring data and saving on future maintenance costs. Attached Figure Description

[0014] Figure 1 The diagram shown is a three-dimensional structural schematic of an embodiment of the monitoring device and monitoring method of the present invention; Figure 2 The diagram shown is a schematic representation of the control components of the monitoring device and monitoring method of the present invention. Figure 3 The diagram shown is a schematic representation of the dust removal component structure of the monitoring device and monitoring method of the present invention. Figure 4 The figures shown are schematic diagrams of the overall three-dimensional structure of Embodiment 2 and Embodiment 3 of the monitoring device and monitoring method of the present invention; Figure 5 The diagram shown is a partial three-dimensional structural schematic of a second embodiment of the monitoring device and monitoring method of the present invention; Figure 6 The diagram shown is a partial three-dimensional structural schematic of Embodiment 3 of the monitoring device and monitoring method of the present invention; Figure 7 The diagram shown is a three-dimensional structural schematic of Embodiment 4 of the monitoring device and monitoring method of the present invention. Figure 8 The diagram shown is a partial three-dimensional structural schematic of Embodiment 4 of the monitoring equipment and monitoring method of the present invention.

[0015] Explanation of reference numerals in the attached drawings: 1. Monitor; 2. Mounting component A; 3. Frame; 4. Base; 501. Rotary motor; 502. Control panel; 503. Operating frame; 504. Servo motor; 505. Threaded rod and threaded sleeve; 506. Moving frame; 507. Telescopic cylinder; 601. Cleaning chamber; 602. Guide plate; 603. Spray head; 604. Dryer; 605. Water storage chamber; 606. Drain hole; 7. Mounting component B; 701. Suspension frame; 702. Adjusting sleeve; 703. Clamping rod; 704. Positioning plate; 705. Positioning groove; 706. Limiting hole; 707. Limiting rod; 708. Thrust spring; 8. Storage groove; 9. Control cylinder; 10. Ground nail; 11. Track groove; 12. Slide rod; 13. Sliding seat; 14. Locking plate; 15. Positioning hole assembly. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Example 1: Please refer to Figure 1-3 This invention provides a wellbore integrity monitoring device for produced water reinjection wells, comprising a monitor 1, a mounting component A2, a frame 3, a base 4, a control component, and a dust removal component; the monitor 1 is equipped with a frame 3 at its upper end; a control component for controlling the movement of the monitor 1 is installed in the middle of the top beam of the frame 3; the control component includes a rotary motor 501; a circular control disk 502 is installed at the lower end of the output shaft of the rotary motor 501; a long strip-shaped operating frame 503 is fixedly connected to the inner side of the control disk 502; a servo motor 504 is installed on the inner side of the operating frame 503 near the control disk 502; a threaded rod and a threaded sleeve 505 are installed at the output end of the servo motor 504; a moving frame 506 is fixedly connected to the lower end of the threaded rod and the threaded sleeve 505; the moving frame 506... A telescopic cylinder 507 is installed inside the moving frame 506; the control component and the monitor 1 are fixedly installed via mounting piece A2; a base 4 is fixedly connected to the lower side of the left and right support rods of the frame 3; a dust removal component for cleaning the surface of the monitor 1 is installed inside the right support rod of the frame 3; the dust removal component includes a cleaning chamber 601; a water spray head 603 is installed at the front end of the inner side of the cleaning chamber 601; a dryer 604 is installed at the right end of the cleaning chamber 601; a water storage chamber 605 is located at the lower right end of the cleaning chamber 601; the dust removal component also includes a guide plate 602 and a drain hole 606; a guide plate 602 for recycling dripping dirty water is provided at the lower end of the cleaning chamber 601; a drain hole 606 with a sealing plug is provided at the right end of the water storage chamber 605.

[0018] Example 2: Please refer to Figure 4-5In this embodiment, the control component and the monitor 1 are installed and fixed together by mounting component B7. Compared with the direct fixing of mounting component A2 with bolts, mounting component B7 adopts a split structure that is easy to disassemble, which allows for faster and more convenient switching of monitoring equipment without disassembling the entire structure, thereby reducing operation time and greatly improving the flexibility and adaptability of operation. Mounting component B7 includes a suspension frame 701, an adjusting sleeve 702, a clamping rod 703, a positioning plate 704, a positioning groove 705, a limiting hole 706, a limiting rod 707, and a thrust spring 708. The suspension frame 701 adopts a "U"-shaped structure. The adjusting sleeve 702 is fixedly connected to both ends of the suspension frame 701. The clamping rod 703 is threadedly connected to the inner side of the adjusting sleeve 702. The positioning plate 704 is provided on the inner side of the suspension frame 701. The positioning groove 705 is opened on both ends of the positioning plate 704. The clamping rod 703 has a locking block that matches the shape of the positioning groove 705. A symmetrically positioned limiting rod 707 is fixedly connected to one side of the suspension bracket 701; symmetrically positioned limiting holes 706 are provided on both sides of the suspension bracket 701; the limiting rod 707 is slidably connected to the inner side of the limiting hole 706; a thrust spring 708 is provided on the outer side of the clamping rod 703 to prevent the clamping rod 703 from shifting; during installation, the positioning plate 704 is fixed to the mounting surface, and then the suspension bracket 701 carrying the monitoring equipment is fitted into the positioning plate 704 at the end and locked in place. Rotate the clamping rod 703 inside the adjusting sleeves 702 on both sides. The clamping rod 703 moves towards the positioning groove 705 of the positioning plate 704 along the prescribed path of the limiting hole 706 and the limiting rod 707 until the clamping rod 703 is engaged with the positioning groove 705. After the operator releases the grip, the thrust spring 708 presses against the clamping rod 703 to prevent the clamping rod 703 from shifting. This completes the installation of the monitoring equipment. If it is necessary to disassemble the monitoring equipment, the above steps are reversed.

[0019] Example 3: Please refer to Figure 4 , 6 In this embodiment, storage slots 8 are provided at the four corners of the lower end of the base 4; a control cylinder 9 is fixedly connected to the upper end of the storage slot 8; a ground nail 10 is fixedly connected to the lower end of the piston rod of the control cylinder 9; the ground nail 10 is located inside the storage slot 8; when encountering muddy ground, the base 4 cannot stably support the upper part, so it is necessary to activate the control cylinders 9 at the four corners of the base 4, and the control cylinders 9 push the ground nail 10 out of the storage slot 8, deeply inserting it into the ground to improve the stability of the support and effectively prevent the monitoring equipment from tilting or shaking during use.

[0020] Example 4: Please refer to Figure 7-8In this embodiment, a long, narrow track groove 11 is provided on the upper surface of the base 4; a slide rod 12 is fixedly connected to the inner side of the track groove 11; a sliding seat 13 with a matching sliding hole is slidably connected to the outer side of the slide rod 12; a locking plate 14 is fixedly connected to the outer side of the slide rod 12; a set of positioning holes 15 arranged in parallel is provided on the upper end of the base 4; the threaded holes of the positioning hole set 15 and the threaded holes of the locking plate 14 are connected by fixing bolts; when encountering an unconventional well shaft, the restrictive structure of the sliding seat 13 and the locking plate 14 can be released, and the operator can push the frame 3, which moves horizontally along the path restricted by the slide rod 12, expanding the monitoring area and capturing the monitoring target, thereby increasing the flexibility of operation and monitoring efficiency.

[0021] The monitoring method and steps for the wellbore integrity monitoring equipment for produced water reinjection wells are as follows: Step 1 Preparation: Install the monitor 1 on the mounting part A2 at the lower end of the control component and lock the two together with fixing bolts at the four corners. Transport the frame 3 to the wellbore area of ​​the produced water reinjection well. Adjust the position of the frame 3 so that the top beam of the frame 3 is located at the upper end of the wellbore of the produced water reinjection well, the left and right support columns of the frame 3 are located on both sides of the wellbore of the produced water reinjection well, and the base 4 is in contact with the ground near the wellbore of the produced water reinjection well for stable support. The second step is to start the monitoring equipment: The staff remotely controls the control components to move the position of the monitor 1. First, the rotating motor 501 is started to drive the control panel 502 to rotate, which in turn causes the monitor 1 at the lower end to move in a circular trajectory inside the wellbore of the produced water reinjection well. At the same time, the telescopic cylinder 507 inside the moving frame 506 pushes the monitor 1 down step by step. After the condition inside the wellbore of the produced water reinjection well is monitored, the telescopic cylinder 507 is driven to lift the monitor 1. The servo motor 504 drives the threaded rod and the threaded sleeve 505 to start running, controlling the lower end component to move outward and adjust the position of the monitor 1. Then, it moves in a circular trajectory outside the wellbore of the produced water reinjection well and moves down step by step to monitor the condition inside and outside the wellbore of the produced water reinjection well. In this way, the sensors and data acquisition set in the monitor 1 after the movement can monitor the relevant pressure, temperature and flow parameters of the wellbore in real time, so as to facilitate subsequent analysis and evaluation of the wellbore's operating status. The third step is the post-maintenance of the monitoring equipment: After the monitoring of the produced water reinjection well is completed, the monitoring device 1 is reset. The reset position of the monitoring device 1 is inside the dust removal component. During this period, the water spray head 603 inside the cleaning chamber 601 can be connected to an external water source. After pressurizing the water source, the outside of the monitoring device 1 is rinsed, and the side air dryer 604 is used to blow away the residual water droplets of the monitoring device 1 in time, so as to ensure the accuracy of the next monitoring data.

[0022] Through the above steps, the control component moves the position of monitor 1, and the lower monitor 1 moves in a circular trajectory, gradually moving downwards inside and outside the produced water reinjection well. Only a single monitoring device is needed to comprehensively monitor the inside and outside of the produced water reinjection well, saving the initial purchase cost of monitoring equipment. After the movement, the sensors and data acquisition inside monitor 1 can monitor the relevant pressure, temperature, and flow parameters of the well in real time, so as to facilitate subsequent analysis and evaluation of the well's operating status, avoid monitoring blind spots, and help to detect potential problems in time. After the monitoring is completed, monitor 1 returns to the inside of the dust removal component. During this stay, the water spray head 603 inside the cleaning chamber 601 can be connected to an external water source. After pressurizing the water source, the outside of monitor 1 is rinsed, and the side air dryer 604 dries the residual water droplets on monitor 1 in time, ensuring the accuracy of the next monitoring data and saving the later maintenance cost of the monitoring equipment.

Claims

1. A wellbore integrity monitoring device for produced water reinjection wells, comprising a monitor (1); characterized in that: It also includes mounting component A (2), frame (3), base (4), control component and dust removal component; the monitor (1) is equipped with a frame (3) at the top; a control component for controlling the movement of the monitor (1) is installed in the middle of the top beam of the frame (3); the control component includes a rotary motor (501); a circular control panel (502) is installed at the lower end of the output shaft of the rotary motor (501); a long strip-shaped operating frame (503) is fixedly connected to the inside of the control panel (502); a servo motor (504) is installed on the inside of the operating frame (503) near the end of the control panel (502); a threaded rod and a threaded sleeve (505) are installed at the output end of the servo motor (504); A movable frame (506) is fixedly connected to the lower end of the threaded rod and the threaded sleeve (505); a telescopic cylinder (507) is installed inside the movable frame (506); the control component and the monitor (1) are fixedly installed through the mounting part A (2); a base (4) is fixedly connected to the lower side of the left and right support rods of the frame (3); a dust removal component for cleaning the surface of the monitor (1) is installed inside the right support rod of the frame (3); the dust removal component includes a cleaning chamber (601); a water spray head (603) is installed at the front end of the inner side of the cleaning chamber (601); a dryer (604) is installed at the right end of the cleaning chamber (601); and a water storage chamber (605) is located at the lower right end of the cleaning chamber (601).

2. The wellbore integrity monitoring device for produced water reinjection wells according to claim 1, characterized in that: The control component and the monitor (1) are mounted and fixed together by mounting component B (7).

3. The wellbore integrity monitoring device for produced water reinjection wells according to claim 2, characterized in that: Mounting component B (7) includes a suspension bracket (701), an adjusting sleeve (702), a clamping rod (703), a positioning plate (704), a positioning groove (705), a limiting hole (706), a limiting rod (707), and a thrust spring (708); the suspension bracket (701) adopts a "U"-shaped structure; both ends of the suspension bracket (701) are fixedly connected to the adjusting sleeve (702); the adjusting sleeve (702) is threadedly connected to the inner side of the adjusting sleeve (702); a positioning plate (704) is provided inside the suspension bracket (701); the positioning plate (704) 704) Positioning grooves (705) are provided at both ends; the shape of the clamping rod (703) block matches the positioning groove (705); the clamping rod (703) block is fixedly connected to a front-to-back symmetrical limiting rod (707) on the side of the suspension frame (701); the suspension frame (701) is provided with front-to-back symmetrical limiting holes (706) on both the left and right sides; the limiting rod (707) is slidably connected to the inner side of the limiting hole (706); a thrust spring (708) is provided on the outer side of the clamping rod (703) to prevent the clamping rod (703) from shifting.

4. The wellbore integrity monitoring device for produced water reinjection wells according to claim 1, characterized in that: The base (4) has storage slots (8) at the four corners at the bottom; a control cylinder (9) is fixedly connected to the upper end of the storage slot (8); a ground nail (10) is fixedly connected to the lower end of the piston rod of the control cylinder (9); the ground nail (10) is located inside the storage slot (8).

5. The wellbore integrity monitoring device for produced water reinjection wells according to claim 1, characterized in that: The upper surface of the base (4) is provided with a long strip-shaped track groove (11); a slide rod (12) is fixedly connected to the inner side of the track groove (11); a sliding seat (13) with a matching sliding hole is slidably connected to the outer side of the slide rod (12); a locking plate (14) is fixedly connected to the outer side of the slide rod (12); a set of positioning holes (15) is provided at the upper end of the base (4); the threaded holes of the positioning hole set (15) and the threaded holes of the locking plate (14) are connected by fixing bolts.

6. The wellbore integrity monitoring device for produced water reinjection wells according to claim 1, characterized in that: The dust removal assembly also includes a baffle plate (602) and a drain hole (606); the lower end of the cleaning chamber (601) is provided with a baffle plate (602) for recycling dripping dirty water; the right end of the water storage chamber (605) is provided with a drain hole (606) with a sealing plug.

7. A monitoring method for a wellbore integrity monitoring device for produced water reinjection wells, characterized in that... The wellbore integrity monitoring device for produced water reinjection wells according to any one of claims 1-6 comprises the following steps: First step preparation: Install the monitor (1) on the mounting part A (2) at the lower end of the control component and lock the two together with fixing bolts at the four corners. Transport the frame (3) to the wellbore area of ​​the produced water reinjection well. Correct the position of the frame (3) so that the top beam of the frame (3) is located at the upper end of the wellbore of the produced water reinjection well, the left and right support columns of the frame (3) are located on both sides of the wellbore of the produced water reinjection well, and the base (4) contacts the ground near the wellbore of the produced water reinjection well for stable support. The second step is to start the monitoring equipment: the staff remotely controls the control components to move the position of the monitor (1). First, the rotating motor (501) is started to drive the control panel (502) to rotate, and the monitor (1) at the lower end moves in a circular trajectory inside the well barrel of the produced water reinjection well. The telescopic cylinder (507) inside the moving frame (506) pushes the monitor (1) to move down gradually. After the monitoring of the situation inside the well barrel of the produced water reinjection well is completed, the telescopic cylinder (507) is driven to lift the monitor (1). The servo motor (504) drives the threaded rod and the threaded sleeve (505) to start running, controlling the lower end component to move outward, adjusting the position of the monitor (1), and then moving in a circular trajectory outside the well barrel of the produced water reinjection well and moving down gradually to monitor the situation inside and outside the well barrel of the produced water reinjection well. In this way, the sensors and data acquisition set in the monitor (1) after the movement can monitor the relevant pressure, temperature and flow parameters of the well barrel in real time, so as to analyze and evaluate the operating status of the well barrel in the future. The third step is the post-maintenance of the monitoring equipment: After the monitoring of the wellbore of the produced water reinjection well is completed, the monitoring device (1) is reset. The reset position of the monitoring device (1) is inside the dust removal component. During this stay, the water spray head (603) inside the cleaning chamber (601) can be connected to the external water source. After pressurizing the water source, the outside of the monitoring device (1) is rinsed, and the side air dryer (604) is used to dry the residual water droplets of the monitoring device (1) in time, so as to ensure the accuracy of the next monitoring data.

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