A damage repair tool for the casing of oil and water wells

Abstract

The present invention relates to a damage repair tool for oil well cementing casings, which includes a repair device and a detection device, and the two are fixedly connected through a connecting rod; the detection device includes a detection box, inside which a detection mechanism and a support mechanism are installed, and a driving mechanism is installed on the top of the detection box. The detection mechanism can detect and locate the location where the oil well casing is cracked or deformed. The support mechanism realizes the fixation of the detection device by interacting with the inner wall of the oil well casing. The driving mechanism can assist the detection device to dive in the oil well casing; the repair device includes a repair box, inside which a trimming mechanism is installed, and a filling mechanism is arranged on the top of the repair box. The trimming mechanism can repair the deformed location of the oil well casing, and the filling mechanism can perform cement filling on the cracked part of the oil well casing to reinforce the damaged point of the oil well casing; the present invention can reduce the repair cost and construction cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil and gas exploitation, and particularly relates to a damage repair tool for oil well and water well cementing casings. Background Art

[0002] With the continuous deepening of oilfield development, the deformation and damage of oil well and water well casings are becoming increasingly serious. According to the degree and nature of the damage, casing damage can be divided into casing deformation and casing rupture. Casing deformation occurs when the internal and external pressures of the casing lose balance due to pressure changes and exceed the compressive strength of the casing, and the casing may be deformed and damaged such as necking, squeezing, or bending at one or more places; the main reason for casing rupture is that holes or cracks are generated on the casing wall due to formation pressure extrusion, high-pressure water injection, high-pressure gas injection, improper workover operations, etc. Once the oil well casing ruptures or deforms, a large amount of sediment will enter the wellbore, liquid from other horizons will flow in, and the production string cannot be lowered into the well, resulting in the abandonment of the oil well and causing immeasurable damage to oilfield development.

[0003] Currently, existing oil well casings are generally inspected manually using instruments slowly. Due to the limitations of the arm swing, the inspection effect is not good and the efficiency is low. Moreover, because the oil well and water well casings have been deformed and damaged, they are prone to collapse and cause accidents. Summary of the Invention

[0004] The present invention solves its technical problems by adopting the following technical solutions:

[0005] A damage repair tool for oil well and water well cementing casings includes a repair device and a detection device, and the two are fixedly connected by a connecting rod;

[0006] The detection device includes a detection box. Inside the detection box, a detection mechanism and a support mechanism are installed. On the top of the detection box, a driving mechanism is installed. The detection mechanism can detect and locate the location of the rupture or deformation of the oil well casing. The support mechanism realizes the fixation of the detection device by interacting with the inner wall of the oil well casing. The driving mechanism can assist the detection device to dive in the oil well casing;

[0007] The repair device includes a repair box. Inside the repair box, a trimming mechanism is installed. On the top of the repair box, a filling mechanism is provided. The trimming mechanism can repair the deformed location of the oil well casing, and the filling mechanism can perform cement filling on the ruptured part of the oil well casing to reinforce the damaged point of the oil well casing.

[0008] The detection mechanism includes a fixed block and a detection rod. A plurality of the fixed blocks are installed on the inner wall of the detection box. The detection rod movably passes through the fixed block and the detection box. A linear displacement sensor is installed at the end of the detection rod located inside the detection box. A detection roller is installed at the end of the detection rod located outside the detection box. An ultrasonic sensor is also installed on the detection rod located outside the detection box. A baffle is fixedly installed on the detection rod located inside the fixed block. A return spring is sleeved on the detection rod on one side of the baffle, so that the detection rod can move towards the inside of the detection box and can be reset towards the outside of the detection box under the action of the return spring.

[0009] The support mechanism includes a control electric cylinder, a connection disk and a fixed sleeve. The control electric cylinder is fixedly installed on the top of the detection box. The connection disk is fixedly connected to the output end of the control electric cylinder. The connection disk is located inside the detection box. A plurality of support rods are rotatably connected to the side surface of the connection disk. The other end of the support rod is rotatably connected to a jacking rod. A plurality of the fixed sleeves are installed on the inner wall of the detection box. The jacking rod movably passes through the fixed sleeve and the detection box, and the fixed sleeve and the fixed block are alternately distributed in sequence.

[0010] The driving mechanism includes a connection frame, a sliding rod, a driving roller, a rotating rod, a rotating motor and a power roller. The connection frame is fixedly installed on the top of the detection box. Chutes are symmetrically arranged inside both sides of the connection frame. One side of the sliding rod is movably installed in the chute, and a driving spring is installed between the sliding rod and the chute. The driving roller is rotatably connected to one end of the sliding rod. Two rotating rods are rotatably connected to the top of the detection box. The rotating motor and the power roller are installed on the rotating rod, and the power roller is fixedly connected to the output end of the rotating motor. The rotating rod cooperates with the driving roller so that the driving roller is in contact with the side surface of the rotating rod.

[0011] The trimming mechanism includes a mounting column, a first hydraulic cylinder and a second hydraulic cylinder. The mounting column is fixedly installed inside the repair box. A plurality of the first hydraulic cylinders are fixedly installed on the side surface of the mounting column. A top block is fixedly installed at the output end of the first hydraulic cylinder. The second hydraulic cylinder is fixedly installed on the side surface of the mounting column. A top plate is fixedly installed at the output end of the second hydraulic cylinder. The shape of the top plate is arc-shaped, and the radian of the top plate is the same as the inner radian of the oil well casing.

[0012] The filling mechanism includes a filling box, a filling motor, a feed pipe, a screw rod, a filling pipe and a camera. The filling box is fixedly installed on the top of the repair box. The filling motor is fixedly installed on one side of the filling box. The feed pipe is installed through the top of the filling box. The screw rod is located inside the filling box and is fixedly connected to the output end of the filling motor. The filling pipe is connected through the outlet side of the filling box. The camera is fixedly installed on the top of the filling pipe.

[0013] The trimming mechanism further includes a mounting box, a rotating shaft, and a control motor. The mounting box is installed on the top of the filling box. One end of the rotating shaft is rotatably connected to the mounting box, and the rotating shaft passes through the mounting box movably and is fixedly connected to the top of the filling box. The control motor can control the rotation connection of the rotating shaft.

[0014] A tightening electric cylinder is installed on the side surface of the mounting box, and a friction pad is fixedly installed at the output end of the tightening electric cylinder.

[0015] It further includes a controller. The linear displacement sensor, ultrasonic sensor, control electric cylinder, rotating motor, first hydraulic cylinder, second hydraulic cylinder, control motor, filling motor, camera, and tightening electric cylinder are all electrically connected to the controller.

[0016] It further includes a winch. The winch is installed on the mounting frame, a rope is arranged on the winch, and the end of the rope is fixedly connected to the repair device.

[0017] The advantages and positive effects of the present invention are:

[0018] 1. By providing a detection device and a repair device, the location of the rupture or deformation of the oil well casing can be quickly searched and repaired. Through the cooperation of the detection mechanism and the driving mechanism, the detection device can smoothly dive and detect flaws in the oil well casing, quickly detect and locate the location of the rupture or deformation of the oil well casing, improve the work efficiency of flaw detection and search, prevent accidents, and through the cooperation of the trimming mechanism and the filling mechanism, the location of the rupture or deformation of the oil well casing can be repaired in time, prevent greater damage to the oil well casing, effectively accelerate the progress of the project construction, and avoid the possibility of accidents occurring during manual flaw detection;

[0019] 2. By providing a detection mechanism, it is convenient to quickly detect and locate the location of the rupture or deformation of the oil well casing. By arranging a plurality of detection rods around the detection box, the inner wall of the oil well casing can be detected at multiple angles. By providing a return spring, the detection rods are always in contact with the inner wall of the oil well casing. By arranging a linear displacement sensor at one end of the detection rod, when encountering a bent and deformed place, the detection rod will displace, and the linear displacement sensor at the displacement location will send a signal to the controller, so that the depth and position of the deformed location can be quickly marked. By providing an ultrasonic sensor, the location of the pipeline rupture can be searched, which is convenient for the repair device to repair the location of the rupture or deformation of the oil well casing, effectively speeds up the flaw detection speed, and makes the positioning more accurate;

[0020] 3. By setting up a driving mechanism, it is convenient to assist the detection device to dive. A sliding rod is arranged inside the connecting frame. The rotating rod is tightened by the sliding rod, so that the driving roller installed on the rotating rod fits against the inner wall of the casing. The driving roller is provided with friction lines, which can better fit against the inner wall of the oil well casing, increasing the friction force and preventing the driving roller from slipping. The driving roller is driven by a rotating motor, which can assist the detection device to dive smoothly. When encountering a deformed location, the rotating rod and the driving roller will swing and press against the sliding rod. By arranging a driving spring between the sliding rod and the sliding groove, the driving roller can be reset after passing through the deformed location under the action of the driving spring, without affecting the continuous diving of the detection device and making the diving of the detection device more stable;

[0021] 4. By setting up a trimming mechanism, it is convenient to repair the deformed location. After the detection device detects and locates the damaged location, the detection device will continue to dive below the damaged location. When the trimming mechanism is at the damaged location, the detection device will stop moving. The detection device is fixed by a support mechanism. The control motor drives the rotating shaft to rotate to adjust the angle of the top plate so that the top plate is at the damaged location. First, three first hydraulic cylinders push the top block to fit against the inner wall of the casing, and then the second electric cylinder pushes the top plate to press and repair the damaged location, which is convenient for timely repair of the deformed location of the oil well casing, preventing greater damage to the oil well casing and effectively accelerating the progress of the engineering construction;

[0022] 5. By setting up a filling mechanism, the broken location of the casing can be filled with cement to protect the casing and prevent greater damage to the oil well casing. The control motor drives the rotating shaft to rotate to adjust the angle of the filling pipe so that the filling pipe corresponds to the broken point. By installing a camera on the filling pipe, the staff can conduct remote monitoring, making the docking of the filling pipe and the broken point more accurate. Cement is supplied to the filling box through a cement mixing box and a supply hose. The broken point is filled with cement by the rotation of the filling motor and the screw rod, which can repair the damaged oil well casing, prevent greater damage to the oil well casing, and reduce the repair cost and construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The technical solutions of the present invention will be further described in detail below in conjunction with the drawings and embodiments. However, it should be understood that these drawings are only designed for the purpose of explanation and therefore do not limit the scope of the present invention. In addition, unless otherwise specified, these drawings are only intended to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.

[0024] Figure 1 FIG. is a schematic diagram of the overall structure of the damage repair tool for oil well cementing casing of the present invention;

[0025] Figure 2 This is a partial structural schematic diagram of the damage repair tool for the cementing casing of oil and water wells in the present invention;

[0026] Figure 3 This is a structural schematic diagram of the detection device in the damage repair tool for the cementing casing of oil and water wells in the present invention;

[0027] Figure 4 This is an internal structural schematic diagram of the detection box in the damage repair tool for the cementing casing of oil and water wells in the present invention;

[0028] Figure 5 This is a structural schematic diagram of the detection mechanism in the damage repair tool for the cementing casing of oil and water wells in the present invention;

[0029] Figure 6 This is a structural schematic diagram of the driving mechanism in the damage repair tool for the cementing casing of oil and water wells in the present invention;

[0030] Figure 7 This is a structural schematic diagram of the repair device in the damage repair tool for the cementing casing of oil and water wells in the present invention;

[0031] Figure 8 This is an internal structural schematic diagram of the repair device in the damage repair tool for the cementing casing of oil and water wells in the present invention;

[0032] Figure 9 is Figure 2 an enlarged view of part A in Detailed implementation manners

[0033] First of all, it should be noted that the following will specifically illustrate the specific structure, characteristics and advantages of the present invention by way of examples. However, all descriptions are only for the purpose of illustration and should not be construed as any limitation to the present invention. In addition, any single technical feature described or implied in each embodiment mentioned in this article, or any single technical feature shown or implied in each drawing, can still be arbitrarily combined or deleted between these technical features (or their equivalents), so as to obtain more other embodiments of the present invention that may not be directly mentioned in this article. In addition, for the sake of simplifying the drawings, the same or similar technical features may only be marked in one place in the same drawing.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0035] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0036] As Figure 1-9 shown, a damage repair tool for oil well cementing casing provided in this embodiment includes a repair device 10 and a detection device 19, and the two are fixedly connected through a connecting rod 111;

[0037] The detection device 19 includes a detection box 191. A detection mechanism 2 and a support mechanism 3 are installed inside the detection box 191. A driving mechanism 4 is installed on the top of the detection box 191. The detection mechanism 2 can detect and locate the location where the oil well casing is cracked or deformed. The support mechanism 3 realizes the fixation of the detection device 19 by interacting with the inner wall of the oil well casing. The driving mechanism 4 can assist the detection device 19 to dive in the oil well casing;

[0038] The repair device 10 includes a repair box 110. A trimming mechanism 5 is installed inside the repair box 110. A filling mechanism 6 is arranged on the top of the repair box 110. The trimming mechanism 5 can repair the deformed location of the oil well casing. The filling mechanism 6 can perform cement filling on the cracked part of the oil well casing to realize the reinforcement of the damaged point of the oil well casing.

[0039] Specifically, the detection mechanism 2 includes a fixed block 21 and a detection rod 22. A plurality of the fixed blocks 21 are installed on the inner wall of the detection box 191. The detection rod 22 movably passes through the fixed block 21 and the detection box 191. A linear displacement sensor 25 is installed at the end of the detection rod 22 located inside the detection box 191. A detection roller 26 is installed at the end of the detection rod 22 located outside the detection box 191. An ultrasonic sensor 28 is fixedly installed on the detection rod 22 located outside the detection box 191 through a mounting block 27. A baffle 23 is fixedly installed on the detection rod 22 located inside the fixed block 21. A return spring 24 is sleeved on the detection rod 22 on one side of the baffle 23, so that the detection rod 22 can move towards the inside of the detection box 191 and can be reset towards the outside of the detection box 191 under the action of the return spring 24. By providing the detection mechanism 2, it is convenient to quickly detect and locate the location where the oil well casing 11 is cracked or deformed. By providing a plurality of detection rods 22 around the detection box 191, multiple angles of the inner wall of the oil well casing 11 can be detected. By providing the fixed block 21, it is convenient for the detection rod 22 to slide. A baffle 23 is provided on the side surface of the detection rod 22 to limit the detection rod 22 and prevent the detection rod 22 from falling off. By providing the return spring 24, the detection rod 22 is always in contact with the inner wall of the oil well casing 11. By providing a linear displacement sensor 25 at one end of the detection rod 22, when encountering a bent and deformed place, the detection rod 22 will displace, and the linear displacement sensor 25 at the displacement location will send a signal to the controller 12, so that the depth and position of the deformed location can be quickly marked. By providing the ultrasonic sensor 28, the location of the pipeline rupture can be found, which is convenient for the repair device 10 to repair the location where the oil well casing 11 is cracked or deformed, effectively accelerating the flaw detection speed and making the positioning more accurate.

[0040] The support mechanism 3 includes a control electric cylinder 31, a connection disk 32 and a fixed sleeve 35. The control electric cylinder 31 is fixedly installed on the top of the detection box 191. The connection disk 32 is fixedly connected to the output end of the control electric cylinder 31. The connection disk 32 is located inside the detection box 191. A plurality of support rods 33 are rotatably connected to the side surface of the connection disk 32. The other end of the support rod 33 is rotatably connected to a pressing rod 34. A plurality of the fixed sleeves 35 are installed on the inner wall of the detection box 191. The pressing rod 34 movably passes through the fixed sleeve 35 and the detection box 191, and the fixed sleeve 35 and the fixed block 21 are alternately distributed in sequence; when the trimming mechanism 5 is at the damaged location, the detection device 19 stops moving, and the detection device 19 is fixed by the support mechanism 3. The connection disk 32 is pressed down by the control electric cylinder 31. The connection disk 32 is hinged to the pressing rod 34 through the support rod 33, so that the pressing rod 34 slides in the fixed sleeve 35 and extends out of the detection box 191 to fit against the inner wall of the oil well casing 11, thereby fixing the detection device 19, preventing the trimming mechanism 5 from affecting the detection device 19 during operation, making the trimming mechanism 5 more stable during operation. The fixed sleeve 35 and the fixed block 21 are alternately installed in sequence, and the two mechanisms will not affect each other, facilitating the protection of the detection device 19 from the influence of the repair device 10.

[0041] The driving mechanism 4 includes a connecting frame 41, a sliding rod 44, a driving roller 45, a rotating rod 46, a rotating motor 47 and a power roller 48. The connecting frame 41 is fixedly installed on the top of the detection box 191. Chutes 42 are symmetrically arranged inside both sides of the connecting frame 41. One side of the sliding rod 44 is movably installed in the chute, and a driving spring 43 is installed between the sliding rod 44 and the chute 42. The driving roller 45 is rotatably connected to one end of the sliding rod 44. The two rotating rods 46 are rotatably connected to the top of the detection box 191. The rotating motor 47 and the power roller 48 are installed on the rotating rod 46, and the power roller 48 is fixedly connected to the output end of the rotating motor 47. The rotating rod 46 cooperates with the driving roller 45 so that the driving roller 45 is in contact with the side surface of the rotating rod 46. As shown in the attached drawing, the top of the connecting frame 41 is rotatably connected to the bottom end of the connecting rod 111. By providing the driving mechanism 4, it is convenient to assist the detection device 19 to dive. A sliding rod 44 is arranged inside the connecting frame 41. The rotating rod 46 is tightened by the sliding rod 44, so that the power roller 48 installed on the rotating rod 46 fits against the inner wall of the casing. The power roller 48 is provided with friction patterns, which can better fit against the inner wall of the oil well casing 11, increasing the friction force so that the power roller 48 does not slip. The power roller 48 is driven by the rotating motor 47, which can assist the detection device 19 to dive smoothly. When encountering a deformed location, the rotating rod 46 and the power roller 48 will swing and press against the sliding rod 44, keeping the detection device 19 in a stable state all the time. By providing a driving spring 43 between the sliding rod 44 and the chute 42, under the action of the driving spring 43, the driving roller 45 can be reset after passing through the deformed location and always fit against the inner wall of the oil well casing 11, without affecting the continued diving of the detection device 19, making the diving of the detection device 19 smoother.

[0042] The trimming mechanism 5 includes a mounting post 51, a first hydraulic cylinder 52 and a second hydraulic cylinder 54. The mounting post 51 is fixedly installed inside the repair box 110. A plurality of the first hydraulic cylinders 52 are fixedly installed on the side surface of the mounting post 51. The output end of the first hydraulic cylinder 52 is fixedly installed with a top block 53. The second hydraulic cylinder 54 is fixedly installed on the side surface of the mounting post 51. The output end of the second hydraulic cylinder 54 is fixedly installed with a top plate 55. In order to make the trimming mechanism 5 more stable when repairing the deformed location of the oil well casing 11, it can be considered that the first hydraulic cylinder 52 and the second hydraulic cylinder 54 are arranged oppositely. The shape of the top plate 55 is arc-shaped, and the radian of the top plate 55 is the same as the inner radian of the oil well casing; by setting the trimming mechanism 5, it is convenient to repair the deformed location. When the detection device 19 detects and locates the damage location, the detection device 19 will continue to dive below the damage location. When the trimming mechanism 5 is at the damage location, the detection device 19 will stop moving. By controlling the electric cylinder 31 to press down the connecting plate 32, through the hinge connection of the support rod 33 and the tightening rod 34, the tightening rod 34 slides in the fixed sleeve 35, so that the tightening rod 34 extends out of the detection box 191 and fits with the inner wall of the oil well casing 11 to fix the detection device 19. By controlling the motor 50 to drive the rotating shaft 57 to rotate, the angle of the top plate 55 is adjusted so that the top plate 55 is at the damage location. First, the first hydraulic cylinder 52 is pushed to make the top block 53 fit with the inner wall of the casing, and then the second hydraulic cylinder 54 is pushed to press and repair the damage location, which is convenient for timely repair of the deformed location of the oil well casing 11, preventing greater damage to the oil well casing 11, and can effectively speed up the progress of the project construction. The shape of the top plate 55 is arc-shaped, and the radian of the top plate 55 is the same as the inner radian of the oil well casing 11, which can repair the deformed location of the oil well casing 11 to the greatest extent. When encountering oil well casings 11 with different pipe diameters, the best repair effect can be achieved by replacing the top plate 55. A control motor 50 is installed inside the installation box 56. Through the meshing connection of the first bevel gear 58 and the second bevel gear 59, the control motor 50 is convenient for driving the rotating shaft 57, so as to control the rotation of the filling box 61 and the repair box 110, and facilitate the angle adjustment of the filling box 61 and the repair box 110.

[0043] The filling mechanism 6 includes a filling box 61, a filling motor 62, a feed pipe 63, a screw rod 64, a filling pipe 65, and a camera 66. The filling box 61 is fixedly installed on the top of the repair box 110. The filling motor 62 is fixedly installed on one side of the filling box 61. The feed pipe 63 is installed through the top of the filling box 61. The screw rod 64 is located inside the filling box 61 and is fixedly connected to the output end of the filling motor 62. The filling pipe 65 is connected to the outlet side of the filling box 61 through connection. The camera 66 is fixedly installed on the top of the filling pipe 65. By setting the filling mechanism 6, the broken point of the oil well casing 11 can be filled with cement to protect the oil well casing 11 and prevent greater damage to the oil well casing 11. By controlling the motor 50 to drive the rotating shaft 57 to rotate, the angle of the filling pipe 65 is adjusted so that the filling pipe 65 corresponds to the broken point. By installing a camera 66 on the filling pipe 65, the staff can perform remote monitoring. When there is a deviation in the rotating angle, the staff can perform manual operations to make the docking of the filling pipe 65 with the broken point more accurate. The filling box 61 is supplied with cement through the cement mixing box 17 and the supply hose 18. The cement mixing box 17 can mix the cement to prevent the cement from solidifying and keep the cement in the best repair state. By rotating the filling motor 62 and the screw rod 64 to fill the broken point with cement, the damaged point of the oil well casing 11 can be strengthened to prevent greater damage to the oil well casing 11 and reduce the repair cost and construction cost.

[0044] The trimming mechanism 5 further includes an installation box 56, a rotating shaft 57, and a control motor 50. The installation box is installed on the top of the filling box 61. One end of the rotating shaft 57 is rotatably connected to the installation box 56, and the rotating shaft 57 passes through the installation box and is fixedly connected to the top of the filling box 61. The control motor 50 can control the rotation connection of the rotating shaft 57. In this embodiment, a first bevel gear 58 is installed on the side surface of the rotating shaft 57. The control motor 50 is fixedly installed inside the installation box 56. The output end of the control motor 50 is fixedly installed with a second bevel gear 59. The first bevel gear 58 is meshed with the second bevel gear 59.

[0045] A tightening electric cylinder 7 is installed on the side surface of the installation box 56. The output end of the tightening electric cylinder 7 is fixedly installed with a friction pad 71. When the installation box 56 stops descending and the repair device 10 needs to be controlled for angle adjustment, the controller 12 will control the tightening electric cylinder 7 to work, control the friction pad 71 to contact the inner wall of the oil well casing 11, fix the installation box 56, and make the rotation of the control motor 50 on the rotating shaft 57 more stable.

[0046] It also includes a controller 12 , a linear displacement sensor 25 , an ultrasonic sensor 28 , a control electric cylinder 31 , a rotating motor 47 , a first hydraulic cylinder 52 , a second hydraulic cylinder 54 , a control motor 50 , a filling motor 62 , a camera 66 and a tightening electric cylinder 7 , which are all electrically connected to the controller 12 .

[0047] like Figure 1 As shown, it also includes a winch 15, the winch 15 is installed on the mounting frame 1, and a rope 16 is provided on the winch 15, and the end of the rope 16 is fixedly connected to the repair device 10; specifically, as Figure 1 As shown, a mounting plate 13 is installed at the bottom of the mounting frame 1, and a capstan 15 is rotatably connected to one side of the mounting plate 13. A driving motor 14 is installed on one side of the mounting plate 13, and an output end of the driving motor 14 is fixedly connected to the capstan 15, and the capstan 15 can be driven to rotate by the driving motor. The controller 12 can be considered to be installed on the top of the mounting frame 1; by setting the mounting frame 1, it is convenient to install the capstan 15, and by setting the capstan 15, it is convenient to control the repair device 10 and the detection device 19 to dive, and to position the height of the repair device 10 and the detection device 19. The bottom of the repair device 10 is rotatably connected to the detection device 19 through the connecting rod 111. When the repair device 10 is adjusted in angle, since a power roller 48 is installed on the rotating rod 46, the power roller 48 fits against the inner wall of the oil well casing 11 under the action of the driving spring 43. The power roller 48 can be provided with friction patterns to increase the friction force so that the detection device 19 remains stable and will not be affected by the repair device 10. By providing the detection device 19 and the repair device 10, the location where the oil well casing 11 is broken or deformed can be quickly found and repaired.

[0048] Based on the existing damage repair tools for cementing casings of oil and water wells, the present invention is provided with a detection device 19 and a repair device 10, which can quickly find and repair the location where the oil well casing 11 is broken or deformed. Through the cooperation of the detection mechanism 2 and the driving mechanism 4, the detection device 19 can be smoothly submerged in the oil well casing 11 for flaw detection, and the location where the oil well casing 11 is broken or deformed can be quickly detected and located, thereby improving the work efficiency of flaw detection and finding, and preventing the occurrence of accidents. Through the cooperation of the trimming mechanism 5 and the filling mechanism 6, the location where the oil well casing 11 is deformed or broken can be repaired in time to prevent the oil well casing 11 from causing greater damage, which can effectively speed up the progress of engineering construction and avoid the possibility of accidents caused by manual flaw detection.

[0049] Moreover, a cement mixing tank 17 is provided on one side of the mounting bracket 1, a supply hose 18 is provided on one side of the cement mixing tank 17, the bottom end of the supply hose 18 is connected to the feed pipe 63, and the repair slurry in the cement mixing tank 17 enters the filling box 61 through the supply hose 18 and the feed pipe 63.

[0050] In this embodiment, by operating the drive motor 14, the detection device 19 and the repair device 10 are submerged. When encountering a bent and deformed place, the detection rod 22 will displace, and the linear displacement sensor 25 at the displacement location will send a signal to the controller 12, so that the depth and position of the deformed location can be quickly marked. By providing the ultrasonic sensor 28, the location of the pipeline rupture can be inspected, and a signal will also be sent when encountering a ruptured place, enabling the controller 12 to mark the depth and position of the ruptured location, and then controlling the detection device 19 to submerge. When the repair device 10 is at the marked location, the drive motor 14 stops working, and then the control electric cylinder 31, the rotation motor 47, the first hydraulic cylinder 52, the second hydraulic cylinder 54, the control motor 50, the filling motor 62, the camera 66, and the tightening electric cylinder 7 are operated to repair the deformed and ruptured locations.

[0051] The above embodiments have described the present invention in detail, but the above content is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention shall still fall within the scope covered by the patent of the present invention.

Claims

1. A damage repair tool for oil well cementing casing, characterized in that: it includes a repair device (10) and a detection device (19), and the two are fixedly connected by a connecting rod (111); the detection device (19) includes a detection box (191), inside the detection box (191), a detection mechanism (2) and a support mechanism (3) are installed, on the top of the detection box (191), a driving mechanism (4) is installed, the detection mechanism (2) can detect and locate the location of the rupture or deformation of the oil well casing, the support mechanism (3) realizes the fixation of the detection device (19) by interacting with the inner wall of the oil well casing, and the driving mechanism (4) can assist the detection device (19) to dive in the oil well casing; the repair device (10) includes a repair box (110), inside the repair box (110), a trimming mechanism (5) is installed, on the top of the repair box (110), a filling mechanism (6) is provided, the trimming mechanism (5) can repair the deformed location of the oil well casing, and the filling mechanism (6) can perform cement filling on the rupture of the oil well casing to realize the reinforcement of the damaged point of the oil well casing; the driving mechanism (4) includes a connecting frame (41), a sliding rod (44), a driving roller (45), a rotating rod (46), a rotating motor (47) and a power roller (48), the connecting frame (41) is fixedly installed on the top of the detection box (191), on both sides inside the connecting frame (41), sliding grooves (42) are symmetrically arranged, one side of the sliding rod (44) is movably installed in the sliding groove, and a driving spring (43) is installed between the sliding rod (44) and the sliding groove (42), the driving roller (45) is rotatably connected to one end of the sliding rod (44), the two rotating rods (46) are rotatably connected to the top of the detection box (191), the rotating motor (47) and the power roller (48) are installed on the rotating rod (46), and the power roller (48) is fixedly connected to the output end of the rotating motor (47), the rotating rod (46) cooperates with the driving roller (45) so that the driving roller (45) is in contact with the side surface of the rotating rod (46); The detection mechanism (2) includes a fixed block (21) and a detection rod (22). A plurality of the fixed blocks (21) are installed on the inner wall of the detection box (191). The detection rod (22) movably passes through the fixed block (21) and the detection box (191). A linear displacement sensor (25) is installed at the end of the detection rod (22) located inside the detection box (191). A detection roller (26) is installed at the end of the detection rod (22) located outside the detection box (191). An ultrasonic sensor (28) is also installed on the detection rod (22) located outside the detection box (191). A baffle (23) is fixedly installed on the detection rod (22) located inside the fixed block (21). A return spring (24) is sleeved on the detection rod (22) on one side of the baffle (23), so that the detection rod (22) can move towards the inside of the detection box (191) and can be reset towards the outside of the detection box (191) under the action of the return spring (24); The trimming mechanism (5) includes a mounting column (51), a first hydraulic cylinder (52) and a second hydraulic cylinder (54). The mounting column (51) is fixedly installed inside the repair box (110). A plurality of the first hydraulic cylinders (52) are fixedly installed on the side surface of the mounting column (51). A top block (53) is fixedly installed at the output end of the first hydraulic cylinder (52). The second hydraulic cylinder (54) is fixedly installed on the side surface of the mounting column (51). A top plate (55) is fixedly installed at the output end of the second hydraulic cylinder (54). The shape of the top plate (55) is arc-shaped, and the radian of the top plate (55) is the same as the inner radian of the oil well casing; The filling mechanism (6) includes a filling box (61), a filling motor (62), a feed pipe (63), a screw rod (64), a filling pipe (65) and a camera (66). The filling box (61) is fixedly installed on the top of the repair box (110). The filling motor (62) is fixedly installed on one side of the filling box (61). The feed pipe (63) is installed through the top of the filling box (61). The screw rod (64) is located inside the filling box (61) and is fixedly connected to the output end of the filling motor (62). The filling pipe (65) is connected to the outlet side of the filling box (61) through connection. The camera (66) is fixedly installed on the top of the filling pipe (65).

2. The damage repair tool for oil well cementing casing according to claim 1, characterized in that: The support mechanism (3) includes a control electric cylinder (31), a connecting disk (32) and a fixed sleeve (35). The control electric cylinder (31) is fixedly installed on the top of the detection box (191). The connecting disk (32) is fixedly connected to the output end of the control electric cylinder (31). The connecting disk (32) is located inside the detection box (191). A plurality of support rods (33) are rotatably connected to the side surface of the connecting disk (32). The other end of the support rod (33) is rotatably connected to a tightening rod (34). A plurality of the fixed sleeves (35) are installed on the inner wall of the detection box (191). The tightening rod (34) movably passes through the fixed sleeve (35) and the detection box (191).

3. The damage repair tool for the casing of oil and water wells according to claim 2, characterized in that: The trimming mechanism (5) further includes an installation box (56), a rotating shaft (57) and a control motor (50). The installation box is installed on the top of the filling box (61). One end of the rotating shaft (57) is rotatably connected to the installation box (56), and the rotating shaft (57) movably passes through the installation box and is fixedly connected to the top of the filling box (61). The control motor (50) can control the rotation connection of the rotating shaft (57).

4. The damage repair tool for the casing of oil and water wells according to claim 3, characterized in that: A tightening electric cylinder (7) is installed on the side surface of the installation box (56). A friction pad (71) is fixedly installed at the output end of the tightening electric cylinder (7).

5. The damage repair tool for the casing of oil and water wells according to claim 4, characterized in that: It further includes a controller (12). The linear displacement sensor (25), the ultrasonic sensor (28), the control electric cylinder (31), the rotating motor (47), the first hydraulic cylinder (52), the second hydraulic cylinder (54), the control motor (50), the filling motor (62), the camera (66) and the tightening electric cylinder (7) are all electrically connected to the controller (12).

6. The damage repair tool for the casing of oil and water wells according to claim 5, characterized in that: It further includes a winch (15). The winch (15) is installed on the installation frame (1). A rope (16) is arranged on the winch (15). The end of the rope (16) is fixedly connected to the repair device (10).

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