Well repair equipment

Abstract

The present invention provides a well repair device, which can perform pipe lifting and lowering operations in a well, and comprises: a working platform; a lifting mechanism, the working platform is connected to the lifting mechanism, and the lifting mechanism is used to lift or lower a pipe string; a pipe supporting mechanism, the pipe supporting mechanism is arranged on the working platform, and the pipe supporting mechanism is used to push or pull back the pipe string; a pipe string conveying device, the pipe string conveying device is arranged on one side of the working platform, and the pipe string conveying device conveys the pipe string between the lifting mechanism and the ground, and the pipe string conveying device has a relatively set lifting state and an initial state, and when the pipe string conveying device is in the lifting state, the pipe supporting mechanism pushes the pipe string onto the pipe string conveying device or pulls the pipe string back from the pipe string conveying device and straightens it; a pipe string transporting device, which is arranged on one side of the pipe string transporting device, and the pipe string transporting device transports the pipe string between the pipe string transporting device and a designated position. The technical solution is adopted to solve the problem of low automation of the well repair device.

Description

Technical Field

[0001] The present invention relates to the technical field of oilfield equipment, in particular to a well repairing device. Background Art

[0002] In the existing well repair equipment used in oil fields, after the operating machine fishes out the pipe string from the well, the workover machine's hook lifts the pipe string to a high place, and then the staff cooperates with the workover machine and the catwalk machine to put the pipe string to the designated position so that the staff can inspect and repair the pipe string. The existing well repair equipment requires human-machine cooperation, and has problems such as low automation, waste of labor, and low work efficiency. Summary of the invention

[0003] The invention provides a well repairing device to solve the problem of low automation degree of the well repairing device in the prior art.

[0004] The present invention provides a well repairing device, which can perform pipe lifting and pipe lowering operations on a pipe string in a wellhead, and the well repairing device comprises: a working platform; a lifting mechanism, the working platform is connected to the lifting mechanism, the lifting mechanism is used to lift or lower the pipe string; a pipe supporting mechanism, the pipe supporting mechanism is arranged on the working platform, and the pipe supporting mechanism is used to push or pull back the pipe string; a pipe string conveying device, the pipe string conveying device is arranged on one side of the working platform, the pipe string conveying device conveys the pipe string between the lifting mechanism and the ground, the pipe string conveying device has a relatively set lifting state and an initial state, when the pipe string conveying device is in the lifting state, the pipe supporting mechanism pushes the pipe string onto the pipe string conveying device or pulls the pipe string back from the pipe string conveying device and straightens it; a pipe string transporting device, which is arranged on one side of the pipe string transporting device, and the pipe string transporting device transports the pipe string between the pipe string transporting device and a specified position.

[0005] Furthermore, the pipe column conveying equipment includes: a base; a sliding frame, the sliding frame is arranged on the base, and a slide is arranged on the sliding frame; a lifting arm, having a first end and a second end arranged opposite to each other, the first end of the lifting arm is movably arranged in the slide, and the first end of the lifting arm can rotate relative to the slide, and the lifting arm has a accommodating portion, and the accommodating portion is used to accommodate the pipe column; a driving assembly, one end of the driving assembly is drivingly connected to the lifting arm, and the driving assembly can drive the lifting arm to move; wherein the slide has a first end and a second end arranged opposite to each other, the second end of the slide is located between the first end of the slide and the second end of the lifting arm, when the pipe column conveying equipment is in an initial state, the second end of the lifting arm is raised relative to the base, and the first end of the lifting arm is arranged close to the first end of the slide, and when the pipe column conveying equipment is in a raised state, the second end of the lifting arm is placed on the base, and the first end of the lifting arm moves from the first end of the slide toward the second end of the slide.

[0006] Furthermore, the lifting arm includes a main body and an extension arm, the extension arm is slidably connected to the main body, and the lifting arm has an extended state and a retracted state. When the lifting arm is in the retracted state, the overlapping portion between the main body and the extension arm is the longest, and when the lifting arm is in the extended state, the overlapping portion between the extension arm and the main body is the shortest and one end of the extension arm is located on the side of the main body away from the sliding frame.

[0007] Furthermore, the pipe string handling equipment includes: a frame having a first side and a second side arranged opposite to each other; a robotic arm, which is used to handle the pipe string; a connecting part, which is movably arranged on the frame, and the robotic arm is arranged on the connecting part, and the connecting part has a lifting state that moves relative to the frame; a lifting assembly, which is arranged on the frame, the lifting assembly is drivingly connected to the connecting part, and the lifting assembly is used to drive the connecting part to lift and lower relative to the frame; a flipping assembly, which is arranged on the connecting part, the flipping assembly is drivingly connected to the robotic arm, and the flipping assembly can drive the robotic arm to flip relative to the frame, so that the robotic arm flips from one side of the frame to the other side.

[0008] Furthermore, the robotic arm includes a flip frame and a transport piece, the flip assembly is drivingly connected to the flip frame, the transport piece is used to fix the pipe column, and the transport piece is movably arranged on the flip frame, and the pipe column transporting equipment also includes a telescopic assembly, which is arranged between the flip frame and the transport piece, and the telescopic assembly is used to drive the transport piece to move relative to the flip frame.

[0009] Furthermore, the well repair device also includes a hydraulic clamp mechanism, which is arranged on the working platform and is used to split or connect the pipe strings. The hydraulic clamp mechanism includes: a support seat, which is arranged on the working platform; a lifting frame, which is movably arranged on the support seat; a lifting drive member, which is connected to the lifting frame and drives the lifting frame to rise and fall; a sliding seat, which is slidably arranged on the top of the lifting frame; a sliding drive member, which is connected to the sliding seat and drives the sliding seat to move relative to the lifting frame; a hydraulic clamp, which is arranged on the sliding seat and is used to split or connect the pipe strings.

[0010] Furthermore, the well repairing device also includes a splash preventer, which includes a telescopic cylinder and a sewage collector. The telescopic cylinder is used to surround the periphery of the pipe string, and the sewage collector is arranged below the telescopic cylinder.

[0011] Furthermore, the pipe supporting mechanism includes a base, a clamping manipulator, a telescopic manipulator arm and a swinging manipulator. The base is arranged on a working platform, the swinging manipulator is arranged on the base, the telescopic manipulator arm is connected to the swinging manipulator, the clamping manipulator is connected to the telescopic manipulator arm, the clamping manipulator is used to clamp the pipe column, and the telescopic manipulator arm cooperates with the swinging manipulator to push the pipe column to the pipe column conveying equipment or pull the pipe column back from the pipe column conveying equipment and straighten it.

[0012] Furthermore, the lifting mechanism includes a lifting card and a well repair rig, the well repair rig is arranged on one side of the working platform, the lifting card includes a fixed frame, a clamping member and a rotating drive member, the fixed frame is connected to the well repair rig through a pulley assembly, the clamping member is rotatably connected to the fixed frame, the rotating drive member is arranged on the fixed frame, the rotating drive member is drivably connected to the clamping member to drive the clamping member to rotate around the fixed frame, and the clamping member is used to clamp the pipe column.

[0013] Furthermore, the well repairing device also includes a pipe bin, which is arranged on one side of the pipe string conveying equipment. The pipe string handling equipment is arranged between the pipe bin and the pipe string conveying equipment, and the pipe string handling equipment moves the pipe string on the pipe string conveying equipment to the pipe bin.

[0014] By applying the technical solution of the present invention, the well repair device includes a working platform, a lifting mechanism, a pipe supporting mechanism, a pipe column conveying device and a pipe column transporting device. By adopting the technical solution, a series of actions can be completed, including the lifting mechanism lifting the pipe column, the pipe supporting mechanism pushing the pipe column to the pipe column conveying device, the pipe column conveying device then conveying the pipe column from a high place to a low place, and the pipe column transporting device conveying the pipe column from the pipe column conveying device to a designated position, that is, the pipe column can be automatically moved from the wellhead to the designated position; and a series of actions can be completed, including the pipe column transporting device conveying the pipe column to the pipe column conveying device, the pipe column conveying device conveying the pipe column from a low place to a high place, the lifting mechanism lifting the pipe column, the pipe supporting mechanism fixing the pipe column, pulling the pipe column back and straightening the pipe column, and the assembly lowering the pipe column to the wellhead or the well, that is, the pipe column can be automatically moved from the designated position to the wellhead or the well. The well repair device provided by the technical solution has a high degree of automation, can save labor and improve work efficiency. In addition, the well repair device also has the advantages of simple structure, small space occupation, convenient movement, low cost, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of the present application 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 drawings:

[0016] Figure 1 The structure schematic diagram of the well repairing device provided by the present invention is shown;

[0017] Figure 2 Shows Figure 1 A partial enlarged view of part A;

[0018] Figure 3 The structural schematic diagram of the elevator provided by the present invention is shown;

[0019] Figure 4 The structure schematic diagram of the pipe supporting mechanism provided by the present invention is shown;

[0020] Figure 5The schematic diagram of the structure of the pipe column conveying equipment provided by the present invention is shown;

[0021] Figure 6 A schematic structural diagram of the lifting arm provided by the present invention is shown;

[0022] Figure 7 Shows Figure 6 A partial enlarged view of part B;

[0023] Figure 8 Shows Figure 6 A partial enlarged view of part C in the middle;

[0024] Fig. 9 A schematic diagram showing the structure of the pipeline handling device provided by the present invention is shown;

[0025] Fig.10 A schematic diagram showing the structure of the mechanical arm of the pipeline handling device provided by the present invention is shown;

[0026] Fig.11 A structural schematic diagram of the hydraulic clamp mechanism provided by the present invention is shown;

[0027] Fig.12 The schematic diagram of the structure of the splash guard provided by the present invention is shown;

[0028] Fig.13 A schematic structural diagram of another form of the splash guard provided by the present invention is shown.

[0029] The above drawings include the following reference numerals:

[0030] 10. Working platform;

[0031] 20. Lifting mechanism; 21. Lifting card; 211. Fixing frame; 212. Clamping member; 213. Rotating driving member; 22. Workover rig;

[0032] 30. Pipe supporting mechanism; 31. Base; 32. Clamping manipulator; 33. Telescopic manipulator; 34. Swinging manipulator;

[0033] 40. Pipe column conveying equipment; 41. Base; 42. Sliding frame; 421. Slide; 4211. First end of slide; 4212. Second end of slide; 43. Lifting arm; 431. First end of lifting arm; 432. Second end of lifting arm; 433. Body; 4331. Slide rail; 434. Extension arm; 4341. Limiting structure; 43411. Limiting plate; 43412. Second driving member; 4342. Sliding part; 435. Accommodating part; 44. Driving assembly; 45. First driving member; 46. Luffing arm; 47. Support frame; 48. Buffer mechanism; 491. Telescopic rod; 492. Support part;

[0034] 50. Pipe handling equipment; 51. Frame; 52. Mechanical arm; 521. Turning frame; 522. Handling member; 5221. Support rod; 5222. Electromagnet; 53. Connecting part; 541. Sprocket assembly; 55. Turning assembly; 56. Telescopic assembly; 571. Guide rod; 58. Second guide structure; 581. Guide channel; 582. Guide column;

[0035] 60. Hydraulic clamp mechanism; 61. Support seat; 62. Lifting frame; 63. Lifting drive member; 64. Sliding seat; 65. Sliding drive member; 66. Hydraulic clamp;

[0036] 70. splash guard; 71. telescopic cylinder; 72. splash guard driving member;

[0037] 80. Manage warehouse. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a well repair device, which includes a working platform 10, a lifting mechanism 20, a pipe supporting mechanism 30, a pipe column conveying device 40 and a pipe column transporting device 50. The working platform 10 is connected to the lifting mechanism 20, and the lifting mechanism 20 is used to lift and lower the pipe column. The pipe supporting mechanism 30 is arranged on the working platform 10, and the pipe supporting mechanism 30 is used to push or pull back the pipe column. The pipe column conveying device 40 is arranged on one side of the working platform 10, and the pipe column conveying device 40 transports the pipe column between the lifting mechanism 20 and the ground. The pipe column conveying device 40 has a relatively set lifting state and an initial state. When the pipe column conveying device 40 is in the lifting state, the pipe supporting mechanism 30 pushes the pipe column to the pipe column conveying device 40 or pulls the pipe column back from the pipe column conveying device 40 and straightens it. Straightening the pipe column keeps the pipe column in a vertical state to facilitate the lowering of the pipe column. The pipe string transporting device 50 is disposed at one side of the pipe string conveying device 40 , and the pipe string transporting device 50 transports the pipe string between the pipe string conveying device 40 and a designated location.

[0040] By applying the technical solution of the present invention, the well repair device includes a working platform 10, a lifting mechanism 20, a pipe supporting mechanism 30, a pipe column conveying device 40 and a pipe column transporting device 50. By adopting the technical solution, a series of actions can be completed, including the lifting mechanism 20 lifting the pipe column, the pipe supporting mechanism 30 pushing the pipe column to the pipe column conveying device 40, then the pipe column conveying device 40 conveys the pipe column from a high place to a low place, and the pipe column transporting device 50 transports the pipe column from the pipe column conveying device to a designated position, that is, the pipe column can be automatically moved from the wellhead to the designated position; and a series of actions can be completed, including the pipe column transporting device 50 transporting the pipe column to the pipe column conveying device 40, the pipe column conveying device 40 conveys the pipe column from a low place to a high place, the lifting mechanism 20 lifts the pipe column, the pipe supporting mechanism 30 fixes the pipe column, pulls the pipe column back and straightens the pipe column, and the lifting mechanism 20 lowers the pipe column to the wellhead or into the well, that is, the pipe column can be automatically moved from the designated position to the wellhead or into the well. The well repair device provided by the technical solution has a high degree of automation, can save labor and improve work efficiency. In addition, the well repair device has the advantages of simple structure, small space occupation, easy movement and low cost.

[0041] like Figures 5 to 8 As shown, the pipe column conveying device 40 includes a base 41, a sliding frame 42, a lifting arm 43 and a driving assembly 44. The sliding frame 42 is arranged on the base 41, and a slideway 421 is arranged on the sliding frame 42; the lifting arm 43 has a first end and a second end arranged opposite to each other, and the first end 431 of the lifting arm is movably arranged in the slideway 421, and the first end 431 of the lifting arm can rotate relative to the slideway 421, and the lifting arm 43 has a receiving portion 435, and the receiving portion 435 is used to receive the pipe column; one end of the driving assembly 44 is drivingly connected to the lifting arm 43, and the driving assembly 44 can drive the lifting arm 43 to move.

[0042] The slide 421 has a first end and a second end that are arranged opposite to each other, and the second end 4212 of the slide is located between the first end 4211 of the slide and the second end 432 of the lifting arm. When the pipe string conveying device 40 is in the initial state, the second end 432 of the lifting arm is placed on the base 41, and the first end 431 of the lifting arm is arranged close to the first end 4211 of the slide. When the pipe string conveying device 40 is in the lifting state, the second end 432 of the lifting arm is lifted relative to the base 41, and the first end 431 of the lifting arm moves from the first end 4211 of the slide toward the second end 4212 of the slide. By adopting the above scheme, the pipe string to be conveyed can be placed in the accommodating portion, and when the pipe string conveying device 40 switches between the lifting state and the initial state, it can complete the conveying of the pipe string from a low place to a high place or from a high place to a low place. When the pipe column conveying device 40 switches between the lifting state and the initial state, the first end 431 of the lifting arm moves between the first end 4211 of the slideway and the second end 4212 of the slideway, thereby driving the pipe column to move horizontally along the slideway 421, and then accurately moving the pipe column to a specified position. A connecting shaft may be provided on the first end 431 of the lifting arm, and the connecting shaft is rotatably connected and slidably connected in the slideway 421. The first end 431 of the lifting arm may also be rotatably connected to a connecting shaft, and the connecting shaft is slidably connected to the slideway 421.

[0043] Specifically, the lifting arm 43 includes a body 433 and an extension arm 434, the extension arm 434 is slidably connected to the body 433, and the lifting arm 43 has an extended state and a retracted state. When the lifting arm 43 is in the retracted state, the overlapping portion between the body 433 and the extension arm 434 is the longest, and when the lifting arm 43 is in the extended state, the overlapping portion between the extension arm 434 and the body 433 is the shortest and one end of the extension arm 434 is located on the side of the body 433 away from the sliding frame 42. The lifting arm 43 has a retracted state and an extended state, so that the height of the second end 432 of the lifting arm and the length of the lifting arm 43 in the horizontal direction can be adjusted, thereby improving the adaptability of the lifting arm 43 to the use environment. In addition, by setting the lifting arm 43 in this way, the space occupied by the lifting arm in the initial state can be reduced, thereby reducing the overall occupied space of the conveying device.

[0044] In this embodiment, a first driving member 45 is disposed between the body 433 and the extension arm 434, and the first driving member 45 drives the extension arm 434 to slide relative to the body 433. Optionally, the first driving member 45 is disposed on the body 433. A sprocket structure may be disposed between the first driving member 45 and the extension arm 434 to transmit the driving force of the first driving member 45 to the extension arm 434.

[0045] Specifically, the receiving portion 435 is provided on the extension arm 434, and the shape of the receiving portion 435 matches the shape of the pipe string. The receiving portion 435 is used to receive the pipe string. The shape of the receiving portion 435 is set to match the shape of the pipe string, which can prevent the pipe string from shifting relative to the extension arm 434, thereby improving the stability of the transportation process.

[0046] Specifically, a luffing arm 46 is provided between the driving assembly 44 and the lifting arm 43, one end of the luffing arm 46 is rotatably connected to the lifting arm 43, and the other end of the luffing arm 46 is rotatably connected to the base 41. The driving assembly 44 is drivingly connected to the luffing arm 46, and the driving assembly 44 drives the lifting arm 43 to move through the luffing arm 46. One end of the luffing arm 46 can be connected to the middle of the body 433 of the lifting arm 43, and can also be connected to one end of the body 433 away from the sliding frame 42. The driving assembly 44 can be a linear driving member, and the output shaft of the driving assembly 44 drives the luffing arm 46 to rotate relative to the base 41, and one end of the luffing arm 46 drives the second end 432 of the lifting arm to move, thereby driving the second end 432 of the lifting arm to switch between the initial state and the lifting state. The luffing arm 46 is provided between the driving assembly 44 and the lifting arm 43, so that the driving assembly 44 can drive the lifting arm 43 to rotate relative to the slideway 421 and to make a linear motion.

[0047] In this embodiment, the pipe column conveying device 40 also includes a support frame 47, which is arranged on the base 41 and is spaced apart from the sliding frame 42. The support frame 47 is used to support the lifting arm 43. When the pipe column conveying device 40 is in the initial state, the lifting arm 43 is overlapped on the support frame 47. The support frame 47 can support the lifting arm, thereby reducing the pressure of the support frame 47 on the sliding frame 42 and the driving assembly 44, which can improve the overall structural stability and service life of the device. In addition, when the lifting arm 43 switches to the initial state, the support frame 47 can limit the lifting arm 43 to prevent the second end 432 of the lifting arm from being too low and causing damage to other parts.

[0048] Specifically, the pipe column conveying device 40 further includes a buffer mechanism 48, which is disposed on the base 41 and is located below the lifting arm 43. The buffer mechanism 48 is used to buffer the lifting arm 43. The buffer mechanism 48 has a certain elasticity. When the lifting arm 43 switches from the lifting state to the initial state, the lifting arm 43 has inertia. The buffer mechanism 48 can buffer the lifting arm 43 to prevent the lifting arm 43 from colliding with the supporting frame 47 and other parts and causing damage.

[0049] Specifically, a limiting structure 4341 is provided on the extension arm 434, which is used to limit the pipe column located in the accommodating portion 435. The limiting structure 4341 includes a limiting plate 43411 and a second driving member 43412. The second driving member 43412 is provided on the lifting arm 43. The limiting plate 43411 is connected to the extension arm 434. The second driving member 43412 is drivingly connected to the limiting plate 43411. The limiting plate 43411 has a limiting state and an avoidance state. When the limiting plate 43411 is in the avoidance state, the limiting plate 43411 is at one side of the extension arm 434. When the limiting plate 43411 is in the limiting state, the limiting plate 43411 abuts against the pipe column. The limiting structure 4341 is provided to prevent the pipe column from sliding off the extension arm. The second driving member 43412 can be a linear driving member. The limit plate 43411 can be slidably connected to the extension arm 434, and the second driving member 43412 drives the limit plate 43411 to slide relative to the extension arm 434, so that the limit plate 43411 switches between the avoidance state and the limit state. The limit plate 43411 can be rotatably connected to the extension arm 434, and the output shaft of the second driving member 43412 is rotatably connected to one end of the limit plate 43411, and the second driving member 43412 drives the limit plate 43411 to rotate relative to the extension arm 434. When the other end of the limit plate 43411 rotates to one side of the extension arm 434, the limit plate 43411 is in the avoidance state, and when the other end of the limit plate 43411 rotates to the other side of the extension arm 434, the limit plate 43411 abuts against the pipe column, and the limit plate 43411 is in the limit state.

[0050] Specifically, the body 433 is provided with a slide rail 4331, and the extension arm 434 is provided with a sliding portion 4342, which is clamped and slidably connected in the slide rail 4331. In this way, the extension arm 434 can slide stably relative to the body 433.

[0051] In this embodiment, the pipe column conveying device 40 further includes a telescopic rod 491 and a support portion 492. The two ends of the telescopic rod 491 are respectively connected to the base 41 and the support portion 492. The support portion 492 is arranged on the ground, and the base 41 is leveled by adjusting the length of the telescopic rod 491. There are multiple telescopic rods 491 and support portions 492, which are spaced apart on the base 41 to adjust the distance between each part of the base 41 and the bottom surface, thereby keeping the base 41 stable. The telescopic rod 491 can be an electric telescopic rod, a hydraulic cylinder, a pneumatic cylinder, etc.

[0052] like Fig. 9 and Fig.10As shown, the pipe string handling equipment 50 includes a frame 51, a mechanical arm 52, a connecting part 53, a lifting assembly and a flipping assembly 55. The frame 51 has a first side and a second side arranged opposite to each other; the mechanical arm 52 is used to carry the pipe string; the connecting part 53 is movably arranged on the frame 51, the mechanical arm 52 is arranged on the connecting part, and the connecting part has a lifting state that moves relative to the frame; the lifting assembly is arranged on the frame 51, the lifting assembly is connected to the connecting part 53 by driving, and the lifting assembly is used to drive the connecting part to lift relative to the frame; the flipping assembly 55 is arranged on the connecting part 53, the flipping assembly 55 is connected to the mechanical arm 52 by driving, and the flipping assembly 55 can drive the mechanical arm 52 to flip relative to the frame 51, so that the mechanical arm 52 flips from one side of the frame 51 to the other side.

[0053] Specifically, the mechanical arm 52 includes a flip frame 521 and a transporting member 522, the flip assembly 55 is drivingly connected to the flip frame 521, the transporting member 522 is used to fix the pipe string, and the transporting member 522 is movably arranged on the flip frame 521, and the pipe string handling device 50 also includes a telescopic assembly 56, which is arranged between the flip frame 521 and the transporting member 522, and the telescopic assembly 56 is used to drive the transporting member 522 to move relative to the flip frame 521. The transporting member 522 is used to fix or release the pipe string. Generally, the telescopic assembly 56 drives the transporting member 522 to move in the horizontal direction, so that the transporting member 522 accurately prevents the pipe string from being placed in a designated position, thereby improving the adaptability of the pipe string handling device 50. The flip assembly 55 can drive the flip frame 521 to flip, thereby driving the transporting member 522 and the pipe string to flip, so as to complete the handling of the pipe string.

[0054] Specifically, the pipe string handling device 50 further includes a first guide structure, which is disposed between the connecting portion 53 and the frame 51, and is used to guide the connecting portion 53. The lifting assembly drives the connecting portion 53 to rise and fall, and the first guide structure can prevent the connecting portion 53 from shaking or tilting during the lifting process, thereby improving the movement stability of the connecting portion 53.

[0055] Specifically, the first guide structure includes a guide rod 571 and a through hole provided on the connecting portion 53, the guide rod 571 is vertically provided on the frame 51, the guide rod 571 is penetrated in the through hole, and the through hole cooperates with the guide rod 571 to guide the connecting portion 53. The guide rod 571 cooperates with the through hole to guide the connecting portion 53, and the guiding effect is good, the structure is simple, and the installation is easy.

[0056] The pipe column handling device further includes a second guide structure 58, which is disposed between the flip frame 521 and the handling member 522 and is used to guide the handling member 522. The second guide structure 58 enables the handling member 522 to move smoothly relative to the flip frame 521.

[0057] Specifically, the second guide structure 58 includes a guide channel 581 and a guide column 582. The guide channel 581 is arranged in the horizontal direction and is arranged at the end of the flip frame 521. The guide column 582 is arranged at the bottom of the transport member 522. The guide column 582 is movably arranged in the guide channel 581. The guide channel 581 cooperates with the guide column 582 to guide the transport member 522. When the telescopic assembly 56 drives the transport member 522 to move relative to the flip frame 521, the guide channel 581 and the guide column 582 cooperate to prevent the transport member 522 from shaking or tilting, thereby improving the movement stability of the transport member 522; at the same time, the guide column 582 can provide support force for the transport member 522, thereby reducing the load borne by the telescopic assembly 56 when driving the transport member 522.

[0058] Specifically, there are two flip frames 521, which are connected to both ends of the flip assembly 55, respectively, and the transport member 522 is arranged on the two flip frames 521. Optionally, during flipping, the two flip frames 521 can drive the transport member 522 to flip at the same time, or the flip frame 521 on one side can actively drive the transport member 522 to flip, and the flip frame 521 on the other side can move passively to assist in driving the transport member 522 to flip. In this way, the forces borne by both ends of the flip assembly are uniform, thereby improving the overall structural stability of the device.

[0059] The transporting member 522 includes a support rod 5221 and an electromagnet 5222. The electromagnet 5222 is arranged on the support rod 5221, and the support rod 5221 is movably arranged on the flip frame 521. The electromagnet 5222 is used to absorb the pipe column to be transported. The use of the electromagnet 5222 makes the transporting member 522 simple in structure. Optionally, the electromagnet 5222 is arranged on both sides of the support rod 5221, and the electromagnets on both sides absorb the pipe column at the same time to stably absorb the pipe column to be transported. In other embodiments, the electromagnet 5222 can be replaced by a clamping structure such as a claw, and the clamping structure grabs the pipe column to be transported.

[0060] Specifically, the electromagnet 5222 is provided with a groove, and the shape of the groove matches the shape of the pipe column. The provision of the groove can increase the contact area between the electromagnet 5222 and the pipe column, preventing the pipe column from falling due to insufficient adsorption force; at the same time, the provision of the groove can also limit the pipe column, preventing the pipe column from moving relative to the electromagnet.

[0061] Specifically, the lifting assembly includes a driving member and a sprocket assembly 541, the driving member is connected to the sprocket assembly 541, and the sprocket assembly 541 is connected to the connecting portion 53. The driving member drives the sprocket assembly 541 to rotate, and the sprocket assembly 541 drives the connecting portion 53 to rise and fall. The above structure has a simple structure, low noise, and easy operation. Optionally, the sprocket assembly 541 can use a double-speed chain, which has an accurate and stable conveying speed and can ensure accurate synchronous conveying; and the double-speed chain has a large conveying capacity and can withstand a large load; at the same time, the double-speed chain can work in harsh environments and has reliable performance.

[0062] In this embodiment, the well repair device further includes a hydraulic clamp mechanism 60, which is arranged on the working platform and is used to split or connect the pipe string. Generally, when the pipe string is pulled out of the well, multiple pipe strings are connected end to end and threadedly connected. The hydraulic clamp mechanism clamps one or more pipe strings at the top and drives the pipe string to rotate, so as to separate or connect the pipe string with other pipe strings.

[0063] like Fig.11 As shown, the hydraulic clamp mechanism 60 includes a support seat 61, a lifting frame 62, a lifting drive 63, a sliding seat 64, a sliding drive 65 and a hydraulic clamp 66. The support seat 61 is arranged on the working platform 10; the lifting frame 62 is movably arranged on the support seat 61; the lifting drive 63 is connected to the elevator driving, and the lifting drive 63 drives the lifting frame 62 to rise and fall; the sliding seat 64 is slidably arranged on the top of the lifting frame 62; the sliding drive 65 is connected to the sliding seat 64 driving, and the sliding drive 65 drives the sliding seat 64 to move relative to the lifting frame 62; the hydraulic clamp 66 is arranged on the sliding seat 64, and the hydraulic clamp 66 is used to split or connect the pipe column. Optionally, the sliding drive 65 drives the sliding seat 64 to move in the horizontal direction, the lifting frame 62 and the lifting drive 63 can drive the hydraulic clamp 66 to rise and fall, and the sliding drive 65 and the sliding seat 64 can drive the hydraulic clamp 66 to move in the horizontal direction, so that it is convenient for the hydraulic clamp 66 to move to the position of the pipe string, and then the hydraulic clamp 66 clamps the pipe string and drives the pipe string to rotate to split or connect the pipe string.

[0064] like Fig.12 and Fig.13As shown, the well repair device also includes a splash preventer 70, which includes a telescopic cylinder 71 and a sewage collector. The telescopic cylinder 71 is used to surround the periphery of the pipe string, and the sewage collector is arranged below the telescopic cylinder 71. The splash preventer 70 also includes a splash preventer driving member 72, which is drivingly connected to the telescopic cylinder 71 and is used to drive the telescopic cylinder 71 to extend and retract. When the hydraulic clamp mechanism 60 splits the pipe string, the lifting driving member 63 and the sliding driving member 65 of the hydraulic clamp mechanism 60 cooperate to drive the hydraulic clamp 66 away from the pipe string, and then the splash preventer driving member 72 drives the telescopic cylinder 71 to extend, so that the telescopic cylinder 71 is surrounded by the periphery of the bottom end of the pipe string, and the sewage remaining in the pipe string flows downward along the inner wall of the telescopic cylinder 71 to the sewage collector.

[0065] like Figure 4 As shown, the pipe supporting mechanism 30 includes a base 31, a clamping manipulator 32, a telescopic manipulator 33 and a swinging manipulator 34. The base 31 is arranged on the working platform 10, the swinging manipulator 34 is arranged on the base 31, the telescopic manipulator 33 is connected to the swinging manipulator 34, the clamping manipulator 32 is connected to the telescopic manipulator 33, the clamping manipulator 32 is used to clamp the pipe string, and the telescopic manipulator 33 cooperates with the swinging manipulator 34 to push the pipe string to the pipe string conveying device 40. The clamping manipulator 32 clamps the pipe string, and the telescopic manipulator 33 and the swinging manipulator 34 cooperate to push the clamping manipulator 32 and the pipe string to the pipe string conveying device 40 or pull the pipe string back from the pipe string conveying device 40 and straighten it. Straightening the pipe string keeps the pipe string in a vertical state so as to facilitate lowering the pipe string into the well.

[0066] like Figure 3As shown, the lifting mechanism 20 includes an elevator 21 and a workover rig 22. The workover rig 22 is arranged on one side of the work platform 10. The elevator 21 includes a fixed frame 211, a clamp 212 and a rotary drive 213. The fixed frame 211 is connected to the workover rig 22 through a pulley assembly. The clamp 212 is rotatably connected to the fixed frame 211. The rotary drive 213 is arranged on the fixed frame 211. The rotary drive 213 is drivably connected to the clamp 212 to drive the clamp 212 to rotate around the fixed frame 211. The clamp 212 is used to clamp the pipe string. The lifting mechanism 20 also includes a slip and a slip drive. The slip drive is connected to the slip. When the pressure in the well is high, the slip can be lowered into the well and clamp the pipe string. Then the slip drive drives the slip and the pipe string to move out of the well to remove the pipe string. When the pressure in the well is low, the elevator 21 can be used to remove the pipe string from the well. After the lifting card 21 clamps the pipe string, the pipe string is lifted. Optionally, a guide wheel is provided on the fixed frame 211, and the guide wheel is slidably connected to the well repair machine. After the lifting card 21 lifts the pipe string, the second end 432 of the lifting arm is in a raised state, and the pipe supporting mechanism 30 pushes the bottom end of the pipe string onto the lifting arm 43, and then the lifting card 21 descends to place the pipe string as a whole on the lifting arm. When the pipe supporting mechanism 30 is working and the lifting card 21 is descending, the pipe string is always tilted relative to the fixed frame 211. Therefore, in the above process, the rotating drive member 213 needs to drive the clamping member 212 to rotate to tilt the pipe string.

[0067] In this embodiment, the well repair device further includes a pipe warehouse 80, which is arranged on one side of the pipe string conveying device 40, and the pipe string handling device 50 is arranged between the pipe warehouse 80 and the pipe string conveying device 40, and the pipe string handling device 50 moves the pipe string on the pipe string conveying device 40 to the pipe warehouse 80. Optionally, the pipe warehouse 80 includes a pipe string support frame, and when the handling member 522 of the pipe string handling device 50 moves the pipe string to the pipe string support frame, the electromagnet 5222 on the handling member 522 is then powered off, and the pipe string is separated from the electromagnet 5222. After the pipe string is moved to the pipe warehouse, the staff inspects or repairs the pipe string in the pipe warehouse.

[0068] In this embodiment, the process of transporting the pipe string from the wellhead to the pipe bin 80 is as follows: after the pipe string in the well is taken out, the pipe string is lifted by the lifting card 21, and then the hydraulic clamp mechanism 60 splits the pipe string, the pipe string conveying equipment 40 is switched to the lifting state and the lifting arm 43 is in the extended state, and the split pipe string is pushed to the lifting arm 43 of the pipe string conveying equipment 40 by the pipe supporting mechanism 30, and then the lifting arm 43 is switched to the retracted state and the pipe string conveying equipment is switched to the initial state, and then the pipe string is moved from the lifting arm 43 to the pipe bin 80 by the pipe string handling equipment 50, thereby completing the overall disassembly and handling work. The process of transporting the pipe string from the pipe warehouse 80 to the well is as follows: the pipe string transporting equipment 50 transports the pipe string from the pipe warehouse 80 to the pipe string conveying equipment 40, the pipe string conveying equipment 40 switches from the initial state to the lifting state, and then the lifting arm 43 of the pipe string conveying equipment 40 switches from the contracted state to the extended state, and then the elevator 21 fixes the top of the pipe string and lifts the pipe string from the pipe string conveying equipment 40, when the bottom end of the pipe string moves up to the top end of the lifting arm 43, the pipe supporting mechanism 30 fixes the bottom end of the pipe string and pulls the pipe string onto the working platform to keep the pipe string in a vertical state, and then the hydraulic clamp mechanism 60 connects the lifted pipe string with other pipe strings, and finally the elevator 21 lowers the pipe string to make it descend to the wellhead or into the well.

[0069] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0070] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0071] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0072] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0073] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A well repair device, which can perform pipe lifting and pipe lowering operations on a pipe string in a wellhead, characterized in that: include: Working platform (10); A lifting mechanism (20), the working platform (10) being connected to the lifting mechanism (20), and the lifting mechanism (20) being used to lift or lower a pipe column; A pipe supporting mechanism (30), the pipe supporting mechanism (30) being arranged on the working platform (10), and the pipe supporting mechanism (30) being used to push or pull back the pipe column; A pipe string conveying device (40), the pipe string conveying device (40) being arranged on one side of the working platform (10), the pipe string conveying device (40) conveying the pipe string between the lifting mechanism (20) and the ground, the pipe string conveying device (40) having a relatively arranged lifting state and an initial state, and when the pipe string conveying device (40) is in the lifting state, the pipe supporting mechanism (30) pushes the pipe string onto the pipe string conveying device (40) or pulls the pipe string back from the pipe string conveying device (40) and straightens it; A pipe string transport device (50) is arranged on one side of the pipe string conveying device (40), and the pipe string transport device (50) transports the pipe string between the pipe string conveying device (40) and a designated location; The pipe column conveying equipment (40) comprises: Base (41); A sliding frame (42), the sliding frame (42) being arranged on the base (41), and a slideway (421) being arranged on the sliding frame (42); A lifting arm (43) having a first end and a second end arranged opposite to each other, the first end (431) of the lifting arm being movably arranged in the slideway (421), and the first end (431) of the lifting arm being rotatable relative to the slideway (421), and a receiving portion (435) being provided on the lifting arm (43), and the receiving portion (435) being used to receive a pipe column; A driving assembly (44), one end of the driving assembly (44) being drivingly connected to the lifting arm (43), and the driving assembly (44) being capable of driving the lifting arm (43) to move; The slideway (421) has a first end and a second end that are arranged opposite to each other, the second end (4212) of the slideway is located between the first end (4211) of the slideway and the second end (432) of the lifting arm, when the pipe column conveying device (40) is in the initial state, the second end (432) of the lifting arm is placed on the base (41), and the first end (431) of the lifting arm is arranged close to the first end (4211) of the slideway, when the pipe column conveying device (40) is in the lifting state, the second end (432) of the lifting arm is raised relative to the base (41), and the first end (431) of the lifting arm moves from the first end (4211) of the slideway toward the second end (4212) of the slideway; The pipe string handling equipment (50) comprises: The frame (51) has a first side and a second side which are arranged opposite to each other; A mechanical arm (52), the mechanical arm (52) being used for carrying a pipe string; A connecting portion (53) is movably arranged on the frame (51), the mechanical arm (52) is arranged on the connecting portion, and the connecting portion has a lifting state that moves relative to the frame; a lifting assembly, the lifting assembly being arranged on the frame (51), the lifting assembly being drivingly connected to the connecting portion (53), and the lifting assembly being used to drive the connecting portion to be lifted or lowered relative to the frame; a flip assembly (55) disposed on the connecting portion (53); the flip assembly (55) is drivingly connected to the mechanical arm (52); the flip assembly (55) is capable of driving the mechanical arm (52) to flip relative to the frame (51), so that the mechanical arm (52) flips from one side of the frame (51) to the other side; The well repair device further comprises a hydraulic clamp mechanism (60), wherein the hydraulic clamp mechanism (60) is arranged on the working platform, and the hydraulic clamp mechanism (60) is used to split or connect the pipe string, and the hydraulic clamp mechanism (60) comprises: A support seat (61), wherein the support seat (61) is arranged on the working platform (10); A lifting frame (62) movably disposed on the support seat (61); A lifting drive member (63) is drivingly connected to the lifting frame (62), and the lifting drive member (63) drives the lifting frame (62) to move up and down; a sliding seat (64), the sliding seat (64) being slidably disposed on a top end of the lifting frame (62); A sliding drive member (65) is drivingly connected to the sliding seat (64), and the sliding drive member (65) drives the sliding seat (64) to move relative to the lifting frame (62); A hydraulic pliers (66), wherein the hydraulic pliers (66) are arranged on the sliding seat (64), and the hydraulic pliers (66) are used to split or connect the pipe string.

2. The well repairing device according to claim 1, characterized in that: The lifting arm (43) comprises a main body (433) and an extension arm (434), wherein the extension arm (434) is slidably connected to the main body (433), and the lifting arm (43) has an extended state and a retracted state. When the lifting arm (43) is in the retracted state, the overlapping portion between the main body (433) and the extension arm (434) is the longest; when the lifting arm (43) is in the extended state, the overlapping portion between the extension arm (434) and the main body (433) is the shortest and one end of the extension arm (434) is located on a side of the main body (433) away from the sliding frame (42).

3. The well repairing device according to claim 1, characterized in that: The mechanical arm (52) comprises a turning frame (521) and a transport member (522); the turning assembly (55) is drivingly connected to the turning frame (521); the transport member (522) is used to fix a pipe column; the transport member (522) is movably arranged on the turning frame (521); the pipe column transporting device (50) further comprises a telescopic assembly (56); the telescopic assembly (56) is arranged between the turning frame (521) and the transport member (522); the telescopic assembly (56) is used to drive the transport member (522) to move relative to the turning frame (521).

4. The well repairing device according to claim 1, characterized in that: The well repair device further comprises a splash preventer (70), the splash preventer (70) comprising a telescopic cylinder (71) and a sewage collector, the telescopic cylinder (71) being used to surround the periphery of the pipe string, and the sewage collector being arranged below the telescopic cylinder (71).

5. The well repairing device according to claim 1, characterized in that: The pipe supporting mechanism (30) comprises a base (31), a clamping manipulator (32), a telescopic manipulator arm (33) and a swinging manipulator (34); the base (31) is arranged on the working platform (10); the swinging manipulator (34) is arranged on the base (31); the telescopic manipulator arm (33) is connected to the swinging manipulator (34); the clamping manipulator (32) is connected to the telescopic manipulator arm (33); the clamping manipulator (32) is used to clamp the pipe string; the telescopic manipulator arm (33) cooperates with the swinging manipulator (34) to push the pipe string to the pipe string conveying device (40) or to pull the pipe string back from the pipe string conveying device (40) and straighten it.

6. The well repairing device according to claim 1, characterized in that: The lifting mechanism (20) comprises an elevator (21) and a workover rig (22); the workover rig (22) is arranged on one side of the working platform (10); the elevator (21) comprises a fixed frame (211), a clamping member (212) and a rotating drive member (213); the fixed frame (211) is connected to the workover rig (22) via a pulley assembly; the clamping member (212) is rotationally connected to the fixed frame (211); the rotating drive member (213) is arranged on the fixed frame (211); the rotating drive member (213) is drivingly connected to the clamping member (212) to drive the clamping member (212) to rotate around the fixed frame (211); and the clamping member (212) is used to clamp the pipe column.

7. The well repairing device according to claim 1, characterized in that: The well repair device further comprises a pipe bin (80), wherein the pipe bin (80) is arranged on one side of the pipe string conveying device (40), and the pipe string handling device (50) is arranged between the pipe bin (80) and the pipe string conveying device (40), and the pipe string handling device (50) moves the pipe string on the pipe string conveying device (40) to the pipe bin (80).

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