Pipe fitting dismounting device

Abstract

Disclose a pipe fitting dismounting equipment, including power catwalk (100), pipe lifting mechanism (200), righting mechanism (300), upper and lower buckle mechanism (400), with pressure operation machine (500) and control mechanism (600), control mechanism includes controller (610), power catwalk (100), pipe lifting mechanism (200), righting mechanism (300), upper and lower buckle mechanism (400) and with pressure operation machine (500) are all connected with controller (610), and controller (610) is used to control the working state of each device connected therewith;Can solve the problem of relatively high danger and relatively low work efficiency when dismounting pipe fitting in the current with pressure operation process, needs many people to assist operation.

Description

Technical Field

[0001] This application belongs to the field of oil and gas extraction technology, specifically relating to a pipe fitting disassembly and assembly device. Background Technology

[0002] In the oil and gas extraction field, live-line work is an advanced downhole operation method that maintains a certain pressure inside the wellbore, allowing for the installation and removal of pipe fittings without controlling the well or releasing pressure. This method maximizes the protection of oil and gas reservoirs and the environment. Currently, the operation of live-line work rigs and similar equipment typically requires the cooperation of multiple workers. Generally, two to three people are needed on the workbench to operate the equipment and exchange tools and fittings. This approach presents challenges due to the relatively high risks associated with working at heights and the fact that workers are exposed to wind and sun for extended periods while performing strenuous labor, resulting in relatively low work efficiency. Summary of the Invention

[0003] The purpose of this application is to provide a pipe fitting disassembly and assembly device to solve the problem that in current pressurized operations, multiple people are required to assist in the disassembly and assembly of pipe fittings, which is relatively dangerous and has relatively low work efficiency.

[0004] This application discloses a pipe fitting assembly / disassembly device, comprising: a power catwalk, a pipe lifting mechanism, a straightening mechanism, an upper / lower buckle mechanism, a live-line working machine, and a control mechanism.

[0005] The power cat track is located on one side of the live press machine. The power cat track is used to switch the pipe fitting between a flat position and an inclined position, and to transfer the pipe fitting between the pipe lifting mechanism and the pipe fitting carrying mechanism.

[0006] The pipe lifting mechanism is used to transfer the pipe between the power catwalk and the live press machine. The pipe lifting mechanism includes a mounting frame, a gripper, and a gripper drive. The mounting frame is movably mounted on the mast of the live press machine and is connected to the lifting drive of the live press machine. The gripper is mounted on the mounting frame and is connected to the gripper drive. The gripper drive is used to drive the opening and closing of the gripper.

[0007] The straightening mechanism includes a base and a support member. The base is installed on the live press machine, and the support member is used to support the pipe. The support member is rotatably installed on the base so that the pipe can switch between a vertical state and an inclined state.

[0008] The upper uncoupling mechanism includes an upper uncoupling tool, which is used to upper and lower the coupling on the pipe fitting.

[0009] The pressurized working machine is used to disassemble or install the pipe fittings inside the well without releasing the pressure;

[0010] The control mechanism includes a controller, and the power catwalk, the pipe lifting mechanism, the straightening mechanism, the upper and lower buckle mechanism, and the live-line working machine are all connected to the controller. The controller is used to control the working status of each device connected to it.

[0011] This application discloses a pipe fitting assembly / disassembly device. Its powered catenary allows pipe fittings to be switched between a horizontal and an inclined state, and facilitates the transport of pipe fittings between a pipe lifting mechanism and a pipe fitting carrying mechanism. The pipe lifting mechanism is movably mounted on the mast of a live-line working machine via its mounting frame, which can move up and down relative to the mast under the action of a lifting drive. Simultaneously, the pipe lifting mechanism is equipped with a gripper connected to a gripper drive, which drives the gripper to open and close, allowing it to lock or release the pipe fitting. This enables the pipe lifting mechanism to move between the powered catenary and the live-line working machine. The system facilitates the transfer of pipe fittings between work machines. The straightening mechanism, through its rotating support mounted on the base, provides support for the pipe fittings and allows them to switch between vertical and inclined positions, ensuring stable transfer between the power catwalk and the live-line work machine. Furthermore, during pipe fitting assembly and disassembly, the upper and lower coupling mechanism provides upper and lower couplings, enabling connection and separation between two pipe fittings. The live-line work machine is used to disassemble or install pipe fittings within the wellbore without releasing pressure, achieving pressurized assembly and disassembly of pipe fittings.

[0012] In addition, the pipe fitting disassembly and assembly equipment disclosed in this application embodiment is equipped with a control mechanism, which includes a controller. The power catwalk, pipe lifting mechanism, straightening mechanism, upper and lower buckle mechanism and pressure working machine are all connected to the controller, so as to use the controller to control the working status of each device connected to it, thereby enabling the pipe fitting disassembly and assembly equipment to have the ability of automatic control and automatic disassembly and assembly. This eliminates the need for workers to work at heights for a long time at workbench or other positions. On the one hand, it can improve the safety of the work process. On the other hand, the use of automated equipment can greatly reduce the manpower input and improve work efficiency. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0014] Figure 1 This is a schematic diagram of the pipe fitting assembly and disassembly equipment disclosed in the embodiments of this application;

[0015] Figure 2 This is a schematic diagram of the pipe fitting assembly and disassembly equipment disclosed in the embodiments of this application from another direction;

[0016] Figure 3This is a schematic diagram of the pipe fitting assembly and disassembly equipment disclosed in the embodiments of this application in another direction;

[0017] Figure 4 This is an assembly drawing of the power cat channel and pipeline bearing mechanism in the pipe fitting assembly and disassembly equipment disclosed in the embodiments of this application;

[0018] Figure 5 This is a schematic diagram of the power catenary and pipeline bearing mechanism in the pipe fitting assembly and disassembly equipment disclosed in the embodiments of this application in another direction;

[0019] Figure 6 This is a schematic diagram of the power catwalk in the pipe fitting assembly / disassembly equipment disclosed in the embodiments of this application;

[0020] Figure 7 This is a schematic diagram of the power cat track in another direction of the pipe fitting assembly and disassembly equipment disclosed in the embodiments of this application;

[0021] Figure 8 This is a schematic diagram of the pipe lifting mechanism in the pipe fitting disassembly and assembly equipment disclosed in the embodiments of this application;

[0022] Figure 9 This is a schematic diagram of the straightening mechanism in the pipe fitting disassembly and assembly equipment disclosed in the embodiments of this application;

[0023] Figure 10 This is a schematic diagram of the upper and lower buckle mechanism in the pipe fitting disassembly and assembly equipment disclosed in the embodiments of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 11-Pipe fittings, 12-Couplings,

[0026] 20-Wellhead,

[0027] 100-Powered catwalk, 110-Catwalk body, 120-Hook handle, 130-Guide arm, 140-Slide groove, 150-Loading platform, 161-V-groove, 162-Pushing ramp, 171-Tilting cylinder, 172-Hook handle cylinder, 173-Lifting cylinder, 174-Pushing cylinder, 180-Main boom strut.

[0028] 200-Pipe lifting mechanism, 210-Mounting bracket, 220-Gripper, 231-Gripper drive component, 232-Swing drive component, 233-Tilting drive component, 240-Connecting rod, 250-Gripper base, 260-Guide component,

[0029] 300-Straightening mechanism, 310-Base, 321-Support roller, 322-First limiting component, 323-Second limiting component, 324-Anti-detachment component, 331-First connecting arm, 332-Second connecting arm.

[0030] 400 - Upper and lower shackle mechanism, 410 - Upper and lower shackle tool, 421 - Support, 422 - Mounting base, 430 - Docking drive component, 441 - Guide flare, 442 - Limiting cavity, 450 - Splashproof box, 460 - Telescopic drive component,

[0031] 500-Live pressurized machine, 510-Machine body, 520-Mast, 530-Upper platform, 540-Overflow spraying device,

[0032] 600 - Control mechanism, 610 - Controller

[0033] 900-Pipeline bearing mechanism, 910-Pipe bridge base, 920-Pipe bridge, 930-Angling cylinder. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0036] like Figures 1-10 As shown in the illustration, this application discloses a pipe fitting assembly / disassembly device, which is used in the field of oil and gas extraction and provides assembly / disassembly functions for pipe fittings 11 such as tubing under pressure. Specifically, in the process of oil and gas extraction, it is usually necessary to install multiple pipe fittings 11 for transporting liquids downhole. These multiple pipe fittings 11 are interconnected and extend continuously downhole. The pipe fitting assembly / disassembly device disclosed in this application can send multiple separated pipe fittings 11 downhole one by one, and before the pipe fittings 11 are sent downhole, a reliable connection is formed between any two adjacent pipe fittings 11. At the same time, the pipe fitting assembly / disassembly device can also pull out multiple interconnected pipe fittings 11 from downhole one by one, and after pulling them out, separate any two adjacent pipe fittings 11.

[0037] like Figure 1 As shown, the pipe fitting assembly / disassembly equipment disclosed in this application includes a power catwalk 100, a pipe lifting mechanism 200, a straightening mechanism 300, an upper / lower buckle mechanism 400, a live-line working machine 500, and a control mechanism 600. Furthermore, for ease of description, only the process of installing pipe fitting 11 using the pipe fitting assembly / disassembly equipment will be described in detail, i.e., the process of lowering pipe fitting 11 into the well. The disassembly process of pipe fitting 11 is the reverse of the installation process and will not be elaborated upon here.

[0038] Among them, such as Figures 4-7 As shown, the power catwalk 100 is a device for receiving and transporting pipe fittings 11. Generally, the pipe fittings 11 to be installed are regularly placed flat on the pipe fitting support mechanism 900 to achieve the purpose of storing the pipe fittings 11. The pipe fitting support mechanism 900 can be a power pipe bridge, which specifically includes a pipe bridge base 910, a pipe bridge 920, and a tilting cylinder 930. The pipe bridge 920 is located above the pipe bridge base 910, and one end of the pipe bridge 920 is connected to the pipe bridge base 910 through the tilting cylinder 930, so that the pipe bridge 920 can be rotated to an inclined state relative to the pipe bridge base 910 by the tilting cylinder 930, thereby allowing the pipe fittings 11 supported on the pipe bridge 920 to roll to the other end of the pipe bridge 920 under the action of their own gravity.

[0039] When pipe fitting 11 is installed downhole, the live-line working machine 500 needs to provide assistance in disassembly and assembly. A prerequisite for the live-line working machine 500 to install pipe fitting 11 is that pipe fitting 11 is in a vertical position. Therefore, a power catwalk 100 is needed to switch pipe fitting 11 from a horizontal position to a vertical position. Furthermore, the power catwalk 100 can be located on one side of the live-line working machine 500 and is used to transfer pipe fitting 11 between the live-line working machine 500 and the pipe lifting mechanism 200.

[0040] Specifically, the powered catwalk 100 includes a catwalk body 110, a hook 120, a guide arm 130, a slide 140, a load-bearing platform 150, a main boom strut 180, and multiple drive components, which may be cylinders, etc. The pipe fitting support mechanism 900 is located on one side of the catwalk body 110. The pipe fitting support mechanism 900 is used to support the pipe fitting 11 to be installed (or removed). The hook 120 is used to move the pipe fitting 11 supported on the pipe fitting support mechanism 900 to the support platform 150. The guide arm 130 is used to provide guidance and support during the movement of the pipe fitting 11, so that the pipe fitting 11 can roll freely along the extension direction of the guide arm 130, reducing the difficulty of moving the pipe fitting 11. The support platform 150 is slidably installed on the catwalk body 110 through the slide groove 140. The support platform 150 is provided with a push ramp 162. The push ramp 162 is provided with a V-shaped groove. The push ramp 162 is used to push the pipe fitting 11 upward or downward. The V-shaped groove 161 is used to support the pipe fitting 11. The opposite ends of the main arm support rod 180 are movably connected to the support platform 150 and the catwalk body 110, respectively.

[0041] More specifically, the multiple driving mechanisms include a tilting cylinder 171, a hook cylinder 172, a lifting cylinder 173, and a pushing cylinder 174. The tilting cylinder 171 and the hook cylinder 172 are both connected to the hook 120. The tilting cylinder 171 drives the hook 120 to tilt, achieving the purpose of connecting and delivering the pipe. The hook cylinder 172 drives the hook 120 to move the pipe fitting 11. The lifting cylinder 173 is installed on the catwalk body 110 and connected to the middle of the main boom strut 180, driving the main boom strut 180 to rotate relative to the catwalk body 110, thereby switching the carrying platform 150 between a parallel state and an inclined state relative to the ground. The pushing cylinder 174 is connected to the pushing ramp 162, driving the pushing ramp 162 to operate when the carrying platform 150 is in the tilted position, achieving the purpose of receiving and delivering the pipe fitting 11 to the pipe lifting mechanism 200.

[0042] As described above, the power catwalk 100 allows the pipe fitting 11 to switch between a flat and tilted state, ensuring that the pipe fitting 11 supported on the push ramp 162 can be stably supported on the push ramp 162, thus ensuring safe production. Subsequently, in order to enable the pipe fitting 11 to switch from the tilted state to the vertical state, the pipe lifting mechanism 200 and the straightening mechanism 300 disclosed in the above embodiments are required.

[0043] In detail, the pipe lifting mechanism 200 includes a mounting frame 210, a gripper 220, and a gripper drive 231. The mounting frame 210 is movably mounted on the mast 520 of the live-line working machine 500 and is connected to the lifting drive of the live-line working machine 500. Under the driving action of the lifting drive, the mounting frame 210 can move up and down relative to the mast 520, thereby achieving the purpose of lifting the pipe to a higher position or laying the pipe down the well. To ensure that the pipe lifting mechanism 200 can form a reliable assembly relationship with the pipe fitting 11, as described above, the pipe lifting mechanism 200 is provided with a gripper 220, which is mounted on the mounting frame 210 so that the gripper 220 can move up and down relative to the mast 520 along with the mounting frame 210. At the same time, the gripper 220 is connected to the gripper drive 231 so that the gripper drive 231 can drive the opening and closing of the gripper 220 to lock and release the pipe fitting 11. The gripper drive component 231 can be a linear drive to make the two halves of the gripper 220 move relative to each other, so that the gripper 220 can perform gripping and releasing actions.

[0044] In addition, to prevent the position of the pipe lifting mechanism 200 from obstructing the operation of the live servicing machine 500, the pipe lifting mechanism 200 can also be equipped with a clearance drive. This clearance drive can rotate or move the pipe lifting mechanism 200 relative to the mast 520, allowing the pipe lifting mechanism 200 to avoid the working position of the live servicing machine 500 after lifting the pipe 11 to the corresponding position on the live servicing machine 500. Of course, the clearance drive can also drive the pipe lifting mechanism 200 in other ways, which will not be described in detail here.

[0045] The straightening mechanism 300 provides support for the pipe fitting 11 and drives the pipe fitting 11 to rotate approximately around its own top, enabling the pipe fitting 11 to stably switch between vertical and inclined states, thus improving the safety of pipe fitting 11 installation and removal. Specifically, the straightening mechanism 300 is installed on the live-line working machine 500 and includes a base 310 and a support member. The base 310 allows the entire straightening mechanism 300 to be installed on the live-line working machine 500. The support member supports the pipe fitting 11; for example, the support member can be a support rod, which provides support and limits for the pipe fitting 11. Simultaneously, the support member is rotatably mounted on the base 310, ensuring that the support member can drive the pipe fitting 11 supported on it to switch between inclined and vertical states. More specifically, the base 310 can be fixedly mounted on the working platform of the live-line working machine 500 using bolts or other connecting parts, and the support rod can be rotatably mounted on the base 310 using a rotary motor, so that the support rod can rotate relative to the base 310 under the drive of the rotary motor. Of course, the device used to drive the rotation of the support rod can also be other types of drive equipment, which will not be listed here.

[0046] Similarly, a clearance drive can be provided to the straightening mechanism 300 to drive the straightening drum to rotate or move relative to the mast 520. After the straightening mechanism 300 straightens the pipe 11 to the corresponding position, the straightening mechanism 300 can avoid the working position of the live working machine 500 under the action of the clearance drive.

[0047] With the assistance of the straightening mechanism 300, the pipe lifting mechanism 200 can switch the pipe fitting 11 from an inclined state to a vertical state. Then, under the action of the lifting drive, the pipe fitting 11 can be lifted to prepare for installation at the corresponding position of the live-line working machine 500. As mentioned above, before the pipe fitting 11 is transported downhole, any two adjacent pipe fittings 11 need to be interconnected. Therefore, before the live-line working machine 500 operates, the upper and lower uncoupling mechanism 400 needs to connect two adjacent pipe fittings 11 together.

[0048] In detail, the uncoupling mechanism 400 includes an uncoupling tool 410. During the installation of the straightening mechanism 300 and the uncoupling mechanism 400, each mechanism needs to be aligned with the working position. The uncoupling tool 410 is used to uncouple the pipe fitting 11, and its power source can be an air pump or a hydraulic pump, etc. Furthermore, to prevent the uncoupling tool 410 from obstructing the normal operation of the live-line working machine 500, the uncoupling mechanism 400 also includes a support 421, and the uncoupling tool 410 is movably mounted on the support 421, thereby allowing the uncoupling tool 410 to switch between a working position and a clearance position. During the uncoupling process, the uncoupling tool 410 moves relative to the support 421 to the working position, and after completing the uncoupling work, the uncoupling tool 410 returns to the clearance position. As for the device used to drive the movement of the uncoupling tool 410, it can be a linear motor or a cylinder, etc., which is not limited here.

[0049] After the upper uncoupling mechanism 400 connects two adjacent pipe fittings 11 together, the live-line working machine 500 operates to disassemble or install the pipe fittings 11 in the well without releasing pressure. That is, the live-line working machine 500 can install and press the pipe fittings 11 into the well, or remove the pipe fittings 11 from the well without releasing pressure.

[0050] Furthermore, the pipe fitting disassembly and assembly equipment disclosed in this application embodiment is provided with a control mechanism 600, which includes a controller 610. During the installation of the pipe fitting disassembly and assembly equipment, the power catwalk 100, the pipe lifting mechanism 200, the straightening mechanism 300, the upper and lower buckle mechanism 400, and the live working machine 500 are all connected to the controller 610, thereby enabling the controller 610 to control the working status of each device connected to it. This allows each moving device in the pipe fitting disassembly and assembly equipment to be controlled remotely, achieving the purpose of automated and intelligent operation.

[0051] This application discloses a pipe fitting assembly / disassembly device. Its powered catwalk 100 allows the pipe fitting 11 to switch between a flat and tilted state, and facilitates the transport of the pipe fitting 11 between a pipe lifting mechanism 200 and a pipe fitting carrying mechanism 900. The pipe lifting mechanism 200 is movably mounted on the mast 520 of a live-line working machine 500 via its mounting frame 210, and the mounting frame 210 can move up and down relative to the mast 520 under the action of a lifting drive component. Simultaneously, the pipe lifting mechanism 200 is equipped with a gripper 220, which is connected to a gripper drive component 231. Under the action of the gripper drive component 231, the gripper 220 is driven to open and close, allowing it to lock or release the pipe fitting 11, thereby enabling the pipe lifting mechanism 200 to move freely. The power catwalk 100 and the live-line working machine 500 are used to transfer pipe fittings 11 between them. The straightening mechanism 300, through its rotatable support mounted on the base 310, can provide support for the pipe fittings 11 and enable the pipe fittings 11 to switch between vertical and inclined states, ensuring that the pipe fittings 11 can be stably transferred between the power catwalk 100 and the live-line working machine 500. Furthermore, during the disassembly and assembly of the pipe fittings 11, the upper and lower buckle tools 410 in the upper and lower buckle mechanism 400 can provide upper and lower buckle functions for the pipe fittings 11, thereby realizing the connection and separation between the two pipe fittings 11. The live-line working machine 500 is used to disassemble or install the pipe fittings 11 in the wellbore without releasing the pressure, thus achieving the purpose of live disassembly and assembly of the pipe fittings 11.

[0052] In addition, the pipe fitting disassembly and assembly equipment disclosed in this application embodiment is provided with a control mechanism 600. The control mechanism 600 includes a controller 610, a power catwalk 100, a pipe lifting mechanism 200, a straightening mechanism 300, an upper and lower buckle mechanism 400, and a live-line working machine 500, all of which are connected to the controller 610. The controller 610 controls the working status of each connected device, thereby enabling the pipe fitting disassembly and assembly equipment to have automatic control and automatic disassembly and assembly capabilities. This eliminates the need for workers to perform high-altitude work at workbenches or other locations for extended periods. On the one hand, this improves safety during the work process; on the other hand, the use of automated equipment can greatly reduce manpower input and improve work efficiency.

[0053] Furthermore, the control mechanism 600 also includes multiple sensors. The power catwalk 100, pipe lifting mechanism 200, straightening mechanism 300, buckle-on / off mechanism 400, and live-line working machine 500 are all equipped with sensors. Each sensor is connected to the controller 610, enabling each sensor to transmit the operating status of its connected device to the controller 610, ensuring that the controller 610 can accurately determine whether control commands are executed. As mentioned above, each of the power catwalk 100, pipe lifting mechanism 200, straightening mechanism 300, buckle-on / off mechanism 400, and live-line working machine 500 includes one or more moving parts. To ensure reliable pipe installation and removal, each moving part in the aforementioned devices is equipped with a corresponding sensor. The types of sensors can be configured according to the operating mode of the detected device. Sensors include, but are not limited to, position sensors, open / close sensors, and weight sensors.

[0054] Based on the above technical solution, by connecting each sensor to the control mechanism 600, each sensor can transmit the working status of the connected device to the controller 610. For example, the power catwalk 100 may be equipped with multiple sensors, each corresponding to a component of the power catwalk 100 such as the V-groove 161, tilting cylinder 171, hook cylinder 172, lifting cylinder 173, and pushing cylinder 174, thereby using multiple sensors to detect the specific working status of the power catwalk 100. Correspondingly, each actuating device in the pipe lifting mechanism 200, straightening mechanism 300, upper and lower buckle mechanism 400, and live-line working machine 500 can also be equipped with corresponding sensors to ensure that the working status of each mechanism can be reliably detected. At the same time, each sensor can transmit its detection results to the controller 610, allowing the controller 610 to obtain the actual working status of the power catwalk 100 and other mechanisms, ensuring that control commands can be accurately executed by the corresponding mechanisms, further improving the reliability of the pipe fitting installation and removal equipment.

[0055] As described above, a clearance drive can be provided to the pipe lifting mechanism 200 so that the pipe lifting mechanism 200 can avoid the working position of the live pressure machine 500, and prevent the pipe lifting mechanism 200 from interfering with the normal operation of the live pressure machine 500 and other mechanisms when it is not needed to work.

[0056] In another embodiment of this application, the pipe lifting mechanism 200 of the pipe fitting disassembly and assembly equipment further includes a swing drive 232, and the gripper 220 is rotatably mounted on the mounting frame 210 via the swing drive 232. The swing drive 232 is used to drive the gripper 220 to rotate axially relative to the mast 520, so that the gripper 220 can switch between a working position and an avoidance position.

[0057] Specifically, the oscillating drive component 232 provides linear drive. The oscillating drive component 232 can be a cylinder or a linear motor, and it allows the gripper 220 to directly or indirectly form a rotational engagement with the mounting frame 210 via a hinge or other means. In this case, one end of the oscillating drive component 232 can be connected to the mounting frame 210, and the other end can be connected to the gripper 220. This allows the gripper 220 to rotate relative to the mounting frame 210 when the oscillating drive component 232 extends or retracts, thereby changing the relative position between the gripper 220 and the mounting frame 210. More specifically, it can change the distance between the gripper 220 and the mounting frame 210 in the axial direction perpendicular to the mounting frame 210, allowing the gripper 220 to be positioned relatively close to the mounting frame 210 to avoid obstructing the working area of ​​the live-line working machine 500. Of course, during the installation of the oscillating drive component 232, both the mounting frame 210 and the gripper 220 must form a rotational engagement with it to ensure its normal operation.

[0058] To increase the distance between the gripper 220 and the mounting frame 210, and to increase the range of motion of the gripper 220 and its relative range of motion with respect to the mounting frame 210, the pipe lifting mechanism 200 also includes a connecting rod 240. The gripper 220 is rotatably mounted on one end of the connecting rod 240, and the other end of the connecting rod 240 is rotatably mounted on the mounting frame 210. Thus, the gripper 220 is indirectly mounted on the mounting frame 210 through the connecting rod 240, and the distance between the gripper 220 and the mounting frame 210 is relatively larger.

[0059] Based on this, the swing drive 232 is connected between the mounting frame 210 and the connecting rod 240 to ensure that the connecting rod 240 can stably form a relatively fixed relationship with the mounting frame 210. The swing drive 232 also allows the connecting rod 240 to be set at a certain angle to the axis of the mast 520, preventing the connecting rod 240 from uncontrollably falling under its own weight. Simultaneously, under the action of the swing drive 232, the connecting rod 240 can also rotate relative to the axis of the mast 520, causing a change in the distance between the gripper 220 and the mounting frame 210, thus achieving the purpose of avoiding the working area of ​​the live-line working machine 500.

[0060] To reduce the difficulty of the gripper 220 avoiding obstacles, based on the above embodiment, the lifting mechanism 200 further includes a tilting drive 233. The tilting drive 233 is connected between the connecting rod 240 and the gripper 220. The tilting drive 233 provides linear drive and can be a cylinder or linear motor, etc. When the tilting drive 233 extends or retracts, it can drive the gripper 220 to rotate relative to the connecting rod 240, thereby making the rotation of the gripper 220 easier and allowing for a larger rotation angle, further reducing the difficulty of the gripper 220 avoiding the working area of ​​the live-line working machine 500. Accordingly, to ensure that the tilting drive 233 can work normally, both the gripper 220 and the connecting rod 240 are rotatably connected to the tilting drive 233.

[0061] As described above, the gripper 220 is provided with a gripper drive member 231, which can drive the gripper 220 to open and close, so that the gripper 220 can perform release and gripping actions. Further, in the pipe fitting disassembly and assembly equipment disclosed in the embodiments of this application, the pipe lifting mechanism 200 also includes a gripper seat 250 and a guide member 260. The gripper seat 250 is mounted on the mounting frame 210, and the gripper 220 is mounted on the gripper seat 250. The guide member 260 includes a first guide rod and a second guide rod, both of which are fixed to the gripper seat 250, and the first guide rod and the second guide rod form a guide flare 441.

[0062] That is, in this embodiment, a guide 260 is provided for the gripper 220 to guide the gripper 220 in gripping the pipe fitting 11, thereby reducing the difficulty of gripping the pipe fitting 11. The first guide rod and the second guide rod of the guide 260 can be fixed to the gripper base 250 by welding or other fixed connection methods, and the orientation of the guide flare 441 of the guide 260 is the same as the orientation of the opening of the gripper 220.

[0063] As described above, the pipe fitting disassembly and assembly equipment disclosed in this application embodiment is provided with a straightening mechanism 300. The straightening mechanism 300 includes a support member, so that during the process of the pipe lifting mechanism 200 driving the pipe fitting 11 to move up and down, the support member of the straightening mechanism 300 can change the vertical or inclined state of the pipe fitting 11, so that the pipe fitting 11 can be normally transferred to the pressurized machine 500 or the power catwalk 100.

[0064] Furthermore, the straightening mechanism 300 also includes a connecting arm. One end of the connecting arm is rotatably mounted on the base 310, and the support member is connected to the other end of the connecting arm. This expands the rotation range of the support member under the action of the connecting arm, thereby enhancing the straightening ability of the straightening mechanism 300. Specifically, at least a portion of the connecting arm extends perpendicularly to the support direction of the support member, ensuring that the connecting arm provides a wider support range for the support member. More specifically, the connecting arm includes a first connecting arm 331 and a second connecting arm 332. One end of the first connecting arm 331 is rotatably mounted on the base 310, and the second connecting arm 332 is connected to the other end of the first connecting arm 331. The first connecting arm 331 and the second connecting arm 332 are perpendicularly arranged. Based on this, the support member can be connected to the end of the second connecting arm 332 away from the first connecting arm 331, ensuring that the first connecting arm 331 and the second connecting arm 332 provide stable and reliable load-bearing capacity for the support member, and allowing for a relatively wide support range for the support member.

[0065] Based on the above embodiments, optionally, the second connecting arm 332 is a telescopic structure, that is, the second connecting arm 332 may include at least two parts, which extend in the same direction and are movably connected. In this regard, the distance between the support member and the first connecting arm 331 can change in the extension direction of the second connecting arm 332. Thus, after the straightening mechanism 300 completes the straightening work, the support member and the pipe 11 can be separated by causing the second connecting arm 332 to retract, thus avoiding the working area of ​​the live-line working machine 500 and preventing the straightening mechanism 300 from obstructing the normal operation of the live-line working machine 500.

[0066] As described above, the support member can be a support rod. To further improve the support stability of the support member, in this embodiment, the support member includes a first limiting member 322 and a second limiting member 323. The first limiting member 322 and the second limiting member 323 form a flared structure to provide a accommodating function for the pipe 11. At the same time, the first limiting member 322 and the second limiting member 323 can also provide a limiting function for the pipe 11 from opposite sides, thereby improving the fit stability between the pipe 11 and the support member. In addition, the flared structure formed by the first limiting member 322 and the second limiting member 323 can also provide a guiding function for the pipe 11, thereby reducing the difficulty of fitting the pipe 11 and the support member, and further reducing the difficulty of assembling and disassembling the pipe 11.

[0067] Specifically, both the first limiting member 322 and the second limiting member 323 can be made of metal, and they can be fixedly connected by welding or other methods to provide reliable support and limiting for the pipe fitting 11. Furthermore, by ensuring that both the first limiting member 322 and the second limiting member 323 have a certain dimension in the extension direction of the pipe fitting 11, the supporting effect of the first limiting member 322 and the second limiting member 323 on the pipe fitting 11 can be further improved.

[0068] In addition, considering that after the straightening mechanism 300 cooperates with the pipe fitting 11, the lifting mechanism 200 still needs to continue to drive the pipe fitting 11 to move upward or downward, that is, during the operation of the pipe fitting disassembly and assembly equipment, there is a situation where the pipe fitting 11 and the straightening mechanism 300 rub against each other. In order to prevent the two from being damaged due to mutual friction, the support member disclosed in this application embodiment may optionally include a support roller 321, and the first limiting member 322 and the second limiting member 323 are respectively connected to opposite ends of the support roller 321 along its axial direction. That is, one end of the support roller 321 is connected to the first limiting member 322, and the other end of the support roller 321 is connected to the second limiting member 323, and the flared structure formed by the first limiting member 322 and the second limiting member 323 is flared in the same direction as the support direction of the support roller 321.

[0069] By adopting the above technical solution, the pipe fitting 11 can form a rolling friction engagement with the support roller 321, greatly reducing the friction between the pipe fitting 11 and the straightening mechanism 300, and significantly reducing the noise generated during the assembly and disassembly of the pipe fitting 11. More specifically, the support roller 321 can be a cylindrical structure. In another embodiment of this application, the diameter of the middle portion of the support roller 321 is smaller than the diameter of the two ends, and the diameter of the support roller 321 gradually increases from the middle to both sides, so that the support roller 321 itself can also provide a certain limiting effect for the pipe fitting 11, further improving the stability of the engagement between the pipe fitting 11 and the straightening mechanism 300.

[0070] Furthermore, the straightening mechanism 300 disclosed in this application embodiment may also include an anti-detachment member 324, which is rotatably mounted on the end of the connecting arm where the support member is located, to avoid the flared openings of the first limiting member 322 and the second limiting member 323. That is, in the straightening mechanism 300 disclosed in this application embodiment, the anti-detachment member 324 is used as a blocking structure for the flared structure formed by the first limiting member 322 and the second limiting member 323, and in order to ensure that the pipe 11 can normally enter or leave the flared structure, the anti-detachment member 324 has the ability to move relative to the first limiting member 322, specifically by rotating, to open or close the flared opening of the flared structure.

[0071] Of course, to ensure that the straightening mechanism 300 can automatically engage the pipe fitting 11, the anti-detachment component 324 needs to be equipped with a driving mechanism. This driving mechanism rotates the anti-detachment component 324 relative to the support component, opening it before engaging the pipe fitting 11 to avoid the flared end of the support component. When the pipe fitting 11 is supported on the support component, the anti-detachment component 324 closes, sealing the flared end of the support component, further improving the reliability of the support fit between the pipe fitting 11 and the support component. Specifically, the driving mechanism can change the position of the anti-detachment component 324 through linear drive, and can be a cylinder or a linear motor, etc.

[0072] As described above, the pipe fitting assembly / disassembly equipment disclosed in this application includes an upper / lowering mechanism 400, which includes an upper / lowering tool 410. The upper / lowering tool 410 can be used to fasten and unfasten pipe fittings 11, connecting or separating two pipe fittings 11 together. Similarly, the upper / lowering mechanism 400 also needs to have the ability to avoid the working area of ​​the live-line working machine 500. For example, a drive mechanism can be connected to the upper / lowering mechanism 400 to allow the entire upper / lowering mechanism 400 to move or rotate relative to the live-line working machine 500, so that the upper / lowering mechanism 400 can avoid the working area of ​​the live-line working machine 500 when it is not needed to operate.

[0073] In another embodiment of this application, the upper unhooking mechanism 400 further includes a support 421, a mounting base 422, and a docking drive 430. The support 421 is mounted on the live-line working machine 500 and serves as the mounting base for other components in the upper unhooking mechanism 400. The support 421 can be fixed to the live-line working machine 500 by bolts or other connecting parts. The mounting base 422 serves as the mounting base for the upper unhooking tool 410. The mounting base 422 is movably mounted on the bracket, and the upper unhooking tool 410 is mounted on the mounting base 422. By connecting the docking drive 430 to the mounting base 422, the docking drive 430 can drive the mounting base 422 to switch between a working position and a clearance position. Thus, when the upper unhooking tool 410 is not required to work, it can avoid the live-line working machine 500, preventing the upper unhooking tool 410 and other components from obstructing the normal operation of the live-line working machine 500.

[0074] Specifically, both the support 421 and the mounting base 422 can be made of metal or other materials to ensure high structural strength. They can be slidably fitted together using guide rails, allowing for linear relative movement. The docking drive 430 can be a cylinder or linear motor, or other device with linear driving capabilities. By connecting the docking drive 430 between the mounting base 422 and the support 421, the docking drive 430 can drive the mounting base 422 to move linearly based on the support 421, enabling the upper / lower hook tool 410 mounted on the mounting base 422 to avoid the live-line working machine 500.

[0075] Considering the disassembly and assembly process of pipe fitting 11, especially during the disassembly process, liquid may still remain in pipe fitting 11. After the two connected pipe fittings 11 are separated, in order to prevent liquid leakage from the upper pipe fitting 11 and contamination of the pipe fitting disassembly and assembly equipment, the upper uncoupling mechanism 400 in the pipe fitting disassembly and assembly equipment of this application also includes a splash guard 450 to collect the liquid remaining in pipe fitting 11. Of course, the splash guard 450 can only collect the liquid in pipe fitting 11 after the pipe fitting 11 has been uncoupled. Therefore, during the disassembly process of pipe fitting 11, it is necessary to first uncouple the pipe fitting 11, and then move the pipe fitting 11 from the upper uncoupling tool 410 to the splash guard 450 by moving the mounting base 422.

[0076] To ensure the splash guard 450 has the ability to collect liquid, it may include a first half and a second half. The upper and lower buckle mechanism 400 also includes a telescopic drive 460. Both the first and second halves are mounted on the mounting base 422 via the telescopic drive 460. The telescopic drive 460 drives the first and second halves to engage or disengage. When the first and second halves are separated, the engaging drive 430 moves the splash guard 450 closer to the pipe 11, ultimately positioning the pipe 11 between the first and second halves. Conversely, when the first and second halves are engaged, they provide a sealed environment for the pipe 11 to collect any liquid remaining in it. More specifically, when the first and second halves are engaged, the splash guard 450 has a receiving cavity, and by communicating this cavity with a pipe drain liquid collection device, liquid in the pipe 11 can flow through the splash guard 450 to the pipe drain liquid collection device.

[0077] Specifically, the shapes of the first half and the second half can be designed according to the specific shape and size of the pipe fitting 11. Furthermore, by setting a sealing gasket or other device on one of the first half and the second half, the two halves can form a relatively sealed cavity after being driven by the telescopic drive member 460 and docking with each other, thereby further preventing liquid leakage in the pipe fitting 11.

[0078] More specifically, during the disassembly of pipe fitting 11, the pipe fitting 11 can first be pulled out from the well using the live-line working machine 500. When the coupling 12 of the two connected pipe fittings 11 corresponds with the upper uncoupling mechanism 400, the upper uncoupling tool 410 can be engaged with the pipe fitting 11 using the docking drive 430 to uncouple the pipe fitting 11. At this time, due to the gravity of the pipe fitting 11 itself, the upper pipe fitting 11 can still be pressed against the lower pipe fitting 11, so even though the two have been uncoupled, they will not be completely separated. Afterwards, the docking drive... Under the action of component 430, the upper and lower buckle tool 410 and the splash box 450 can move together with the mounting bracket 210 along the vertical direction of the pipe 11, and the first half and the second half of the splash box 450 are respectively located on opposite sides of the pipe 11. Under the action of the telescopic drive component 460, the splash box 450 can be connected with the pipe 11. By using the pipe lifting mechanism 200 to lift the pipe 11 located above by a preset distance, the connecting ends of the two pipes 11 can be separated from each other, ensuring that the splash box 450 can collect the liquid in the pipe 11.

[0079] As described above, during the disassembly and assembly of pipe fitting 11, especially during installation, the lifting mechanism 200 can automatically lift pipe fitting 11 onto the cat track 100, and under the action of the straightening mechanism 300, the pipe fitting 11 gradually rotates from an inclined state to a vertical state, ensuring that the pipe fitting 11 has the foundation to be used by the live-line working machine 500. More specifically, when the straightening mechanism 300 straightens the pipe fitting 11 to a vertical state, due to factors such as errors or the fitting accuracy between the pipe fitting 11 and the straightening mechanism 300, the end of the pipe fitting 11 away from the lifting mechanism 200, that is, the lower end of the installed pipe fitting 11, may still not be able to accurately align with the upper end of the pipe fitting 11 installed downhole, or in other words, the lower end of the installed pipe fitting 11 and the upper end of the installed pipe fitting 11 cannot be aligned.

[0080] Based on the above, when the upper shackle mechanism 400 includes the aforementioned splash guard 450 and telescopic drive member 460, the upper shackle mechanism 400 further includes a docking limiting member. The docking limiting member includes a third half and a fourth half, with the third half fixed to the first half and the fourth half fixed to the second half. This allows the third and fourth halves to both separate and dock with each other. Simultaneously, when the first and second halves are in a docked state, the docking limiting member formed by the docking of the third and fourth halves has a guide flare 441 and a limiting cavity 442. The guide flare 441 is located above the limiting cavity 442 and faces upwards. The limiting cavity 442 is used to ensure that the axes of the two pipe fittings 11 coincide.

[0081] That is, when the splash guard 450 in the upper shackle mechanism 400 has docking and disassembly capabilities, by setting the docking limiter on the splash guard 450, the number of drive mechanisms can be reduced and the control difficulty of the pipe fitting disassembly and assembly equipment can be reduced. Based on this, during the installation of pipe fitting 11, the docking drive 430 can be used to drive the docking limiter to move radially along the pipe fitting 11, and make the docking limiter cooperate with the pipe fitting 11 installed in the well. Then, the pipe fitting 11, which is basically in a vertical state, is moved to the guide flare 441 of the docking limiter by the pipe lifting mechanism 200 and the straightening mechanism 300. As the pipe lifting mechanism 200 is lowered, the pipe fitting 11 can be inserted into the limiting cavity 442, thereby achieving the alignment of the pipe fitting 11 installed and the pipe fitting 11 downhole. Then, the pipe fitting 11 installed is fixed by the live working machine 500, and the upper and lower buckle tool 410 is used to fasten the pipe fitting 11, thereby achieving the connection between the two pipe fittings 11.

[0082] In the above embodiments, the pipe lifting mechanism 200, the straightening mechanism 300, the upper and lower buckle mechanism 400, and the live-line working machine 500 are all used to provide corresponding actions. During the operation of the pipe fitting disassembly and assembly equipment, the control mechanism 600 can be used to control the actions of the aforementioned multiple mechanisms, so that each mechanism executes the corresponding command issued by the control mechanism 600. However, in the actual operation of the pipe fitting disassembly and assembly equipment, various factors may affect the execution of commands issued by the control mechanism 600, resulting in situations such as inadequate execution or over-execution. Therefore, in the pipe fitting disassembly and assembly equipment disclosed in this application embodiment, a video monitoring mechanism connected to the control mechanism 600 can also be provided. The video monitoring mechanism specifically includes multiple cameras. By installing cameras on the corresponding moving parts of at least one of the mechanisms such as the pipe lifting mechanism 200, the straightening mechanism 300, the upper and lower buckle mechanism 400, and the live-line working machine 500, the specific working status of the corresponding mechanism can be transmitted to the control mechanism 600 via a line, so that the staff can directly obtain the working status of the corresponding mechanism. The staff can then control subsequent processes through the control mechanism 600 according to the specific working status of the mechanism. At the same time, it can also be used as a video file for later viewing.

[0083] As described above, the pipe fitting assembly / disassembly equipment disclosed in this application includes multiple driving devices for moving components, such as a gripper drive 231, a swing drive 232, a tilting drive 233, and a docking drive 430. The power source for the aforementioned driving devices can be compressed gas or electrical energy. In a specific embodiment of this application, the pipe fitting assembly / disassembly equipment includes a drive mechanism, which includes an engine and a hydraulic mechanism. The hydraulic mechanism is connected to the engine, which can convert electrical energy into kinetic energy and drive the hydraulic mechanism to operate, enabling the hydraulic mechanism to drive the aforementioned driving devices through hydraulic drive. Specifically, the hydraulic mechanism is used to drive the power lifting mechanism 200, the straightening mechanism 300, the upper and lower buckle mechanism 400, and the live-line working machine 500, etc. This allows the power source in the entire pipe fitting assembly / disassembly equipment to be consistent, reducing design and assembly difficulty, and can reduce processing and production costs to a certain extent.

[0084] In the pipe fitting disassembly and assembly equipment disclosed in the embodiments of this application, the specific structure of the live pressure machine 500 can be the same as or similar to the structure of the existing live pressure machine 500. The difference is that the live pressure machine 500 in this application includes multiple sensors. The actuators in the live pressure machine 500 are all equipped with sensors to detect the actual operation of the corresponding actuators.

[0085] Specifically, the main structure of the live pressure working machine 500 includes a body 510, a mast 520, and an upper platform 530. Both the mast 520 and the upper platform 530 are mounted on the body 510. The actuating devices in the live pressure working machine 500 may include slips, a blowout preventer, and a coupling detector. Additionally, the live pressure working machine 500 also includes an overflow relief device 540, which is mounted on the body 510 to provide pressure relief.

[0086] The mast 520 is equipped with the aforementioned lifting drive mechanism, which can be a winch. The winch's wire rope passes around the top of the mast 520, and the winch, via a hook at its front end, drives the pipe lifting mechanism 200 to move up and down along the mast 520. An encoder is installed on the winch to locate the position and height of the winch and the pipe lifting mechanism 200. A spare winch is also provided for other tools used during the installation and removal of pipe fitting 11.

[0087] In the live pressurized machine 500, the blowout preventer includes an upper gate blowout preventer, a lower gate blowout preventer, and an annular blowout preventer. The upper gate blowout preventer is used to isolate the pressure outside the wellhead 20 and the balance four-way when the pressure inside the well is high. It works with the lower gate blowout preventer, the balance valve, and the vent valve to balance the pressure inside the four-way. The upper gate blowout preventer is located on the upper part of the balance four-way and is connected to the balance four-way by a flange. A position sensor is provided to detect the on / off status of the upper gate blowout preventer.

[0088] The lower gate blowout preventer is used to isolate the balance four-way valve from the pressure inside the well when the pressure inside the well is high. It works with the upper gate blowout preventer, balance valve, and vent valve to balance the pressure inside the four-way valve. The lower gate blowout preventer is located at the lowest end of the live working machine 500 and the highest end of the wellhead 20. The lower gate blowout preventer is installed with a flange and is equipped with a position sensor to detect the on / off status of the lower gate blowout preventer.

[0089] The annular blowout preventer is used to isolate the pressure inside the wellhead 20 from the outside by squeezing the tubing 11 through the rubber core inside the annular blowout preventer when the pressure inside the well is not high. The annular blowout preventer is located above the upper gate blowout preventer and is connected to the upper gate blowout preventer by a flange. A sensor is provided to detect the on / off status of the annular blowout preventer.

[0090] The balancing valve in the live pressurized machine 500 is used to balance the pressure in the four-way and the well when both the upper gate blowout preventer and the lower gate blowout preventer are closed, so that the pressure in the four-way and the pressure in the well are the same. It is located on the left side of the balancing four-way and is connected to the balancing blowout manifold. The balancing valve is equipped with a position sensor to detect its on / off status.

[0091] The blowout valve in the live working machine 500 is used to release the internal pressure of the four-way valve when both the upper gate blowout preventer and the lower gate blowout preventer are closed, so that the internal pressure of the four-way valve is consistent with the external pressure of the wellhead 20. It is located on the right side of the balance four-way valve and is connected to the balance blowout manifold. The blowout valve is equipped with a position sensor to detect its on / off status.

[0092] The slips include movable load-bearing slips, movable downward pressure slips, fixed load-bearing slips, and fixed downward pressure slips. The movable slip assembly is fixed on the lifting device of the live-line working machine 500. The movable load-bearing slips are used when the weight of the pipe fitting 11 is greater than the upward force in the well, and the movable downward pressure slips are used when the weight of the pipe fitting 11 is less than the upward force in the well. After the movable slip assembly clamps the pipe fitting 11, it rises or falls with the lifting device to achieve the purpose of the pipe fitting 11 entering or leaving the well. A position sensor is provided to detect the on / off status of the movable slips.

[0093] The fixed slip assembly is a mechanism used to clamp and fix the pipe fitting 11. When the weight of the pipe fitting 11 is greater than the upward jacking force in the well, the fixed load-bearing slip is used; when the weight of the pipe fitting 11 is less than the upward jacking force in the well, the fixed downward pressure slip is used. The fixed slip assembly clamps the pipe fitting 11, preventing it from moving up or down. In conjunction with the movable slip assembly, it enables the entire pipe fitting 11 to be moved out of or into the well. The fixed slip assembly is fixed to the upper part of the annular blowout preventer and cannot be moved. A position sensor is provided to detect the on / off status of the fixed slip assembly.

[0094] The lifting device may include multiple lifting cylinders, which are fixed to the body 510. A traveling slip assembly is fixed to the upper end of the lifting device to drive the traveling slip assembly up and down, thereby achieving the purpose of bringing the pipe fitting 11 out of or into the well. Simultaneously, each lifting cylinder is equipped with a position sensor to detect the displacement of the corresponding cylinder.

[0095] The coupling detector includes an upper coupling detector and a lower coupling detector. The upper coupling detector is located on the upper part of the moving slip assembly. When the coupling 12 reaches the drilling surface, the upper coupling detector can accurately locate the position of the coupling 12. The lower coupling detector is located on the upper part of the lower gate blowout preventer and is connected to the lower part of the balance four-way valve through a flange. The lower coupling detector is used to detect the coupling 12 of the pipe fitting 11 when the well is being produced.

[0096] As described above, the pipe fitting assembly / disassembly equipment includes various mechanisms that work in coordination with each other. To prevent accidental factors such as misoperation or mechanism malfunction from interfering with each other's actions, the pipe fitting assembly / disassembly equipment in this embodiment is equipped with an interlocking protection mechanism. Specifically, the interlocking protection mechanism includes:

[0097] 1. Multiple sensors can be used to collect the switching information of the slips. When the moving slip group is open, the fixed slip group is prevented from opening, and when the fixed slip group is open, the moving slip group is prevented from opening.

[0098] 2. When the pipe is being pulled out of the well, the control mechanism 600 can calculate the length of the pipe fitting 11 to be pulled out of the well by using information such as the position information of the lifting device and the slips. When the length of the pipe fitting 11 to be pulled out of the well is greater than the height of the pipe lifting mechanism 200, the gripper 220 of the pipe lifting mechanism 200 will grab the oil pipe. Otherwise, the pipe lifting mechanism 200 will not move.

[0099] 3. The number of rotations of the upper and lower buckle tool 410 and the hydraulic oil pressure of the upper and lower buckle tool 410 are detected by sensors, and the torque of the upper and lower buckle tool 410 is calculated from the hydraulic oil pressure. Furthermore, during buckling, if the actual torque is less than the buckling torque, the buckling is considered successful when the set number of rotations is reached; during buckling, if the actual torque is greater than or equal to the buckling torque, the buckling is considered successful when the set number of rotations is reached; otherwise, the machine stops and an alarm is triggered, and the reason for the alarm is displayed on the operation screen of the control mechanism 600.

[0100] 4. When draining fluid from the well collection pipe, the sensor can be used to obtain the on / off status of the splash guard 450. Furthermore, the winch is only allowed to lift the pipe fitting 11 to drain fluid from the collection pipe when the splash guard 450 is closed; the winch is prohibited from lifting the pipe fitting 11 when the splash guard 450 is not closed.

[0101] 5. Because the operating areas of the lifting device, the upper / lower hook mechanism 400, the straightening mechanism 300, and the pipe-lifting mechanism 200 overlap, the control mechanism 600 needs to monitor the position information of these mechanisms in real time to prevent collisions in the overlapping areas. For example: when the upper / lower hook mechanism 400 is at the wellhead 20, the lifting device is prohibited from lifting; when the lifting device lifts the pipe out of the well, the upper / lower hook mechanism 400 is prohibited from approaching the wellhead 20, the straightening mechanism 300 swings towards the wellhead 20, and the descent height of the pipe-lifting mechanism 200 is limited; when the straightening mechanism 300 is above the wellhead 20, the lifting device is prohibited from lifting, and the descent height of the pipe-lifting mechanism 200 is limited.

[0102] In addition, these interlock protections are effective in both automatic and manual modes, and the interlock content is displayed on the operation screen when the interlock protection is activated.

[0103] Based on the aforementioned disclosed pipe fitting assembly and disassembly equipment, the specific installation and operation of this application embodiment are further described below.

[0104] During the installation of the pipe fitting disassembly and assembly equipment, the equipment needs to be fixed above the wellhead 20 using a derrick and hydraulic outriggers. The hydraulic outriggers can adjust the height of the derrick according to the height of the tool string at the wellhead 20 to accommodate the wellhead 20.

[0105] When using the pipe fitting assembly and disassembly equipment, first erect it on the wellhead 20, use hydraulic outriggers, fixed outriggers and ropes to fix the pipe fitting assembly and disassembly equipment, use flanges to connect the pipe fitting assembly and disassembly equipment to the wellhead 20, connect hydraulic and electrical pipelines, and arrange the power catwalk 100 and power pipe bridge in the pipe fitting assembly and disassembly equipment.

[0106] Control methods are divided into well exit and well entry, depending on the working conditions.

[0107] The well exit process is as follows:

[0108] First, the pipe fitting assembly and disassembly equipment is initialized. Specifically, this includes closing the moving slip assembly, opening the fixed slip assembly, and returning the lifting device to its starting point. The upper and lower uncoupling mechanism 400, the straightening mechanism 300, and the power catwalk 100 are reset to their starting points, the pipe lifting mechanism 200 is positioned to avoid the pipe fittings coming out of the well, and the winch raises the pipe lifting mechanism 200 to its gripping height.

[0109] Subsequently, the lifting device and the moving slip assembly lift the pipe fitting 11, and with the fixed locking assembly closing, the moving slip assembly opens to fix the pipe fitting 11 in the current position.

[0110] Afterwards, the lifting device descends to the starting point, the movable slip group closes, the fixed slip group opens, and the lifting device once again lifts the pipe fitting 11. At the same time, the power catwalk 100 is lifted to the corresponding position on the platform, ready to connect the pipe fitting 11.

[0111] In low-pressure mode, repeat the above actions until the coupling detector confirms that the coupling 12 of the next pipe fitting 11 is in the correct position and stops the coupling 12 of the next pipe fitting 11 at the upper uncoupling height of the upper uncoupling mechanism 400.

[0112] In high-pressure mode, after the coupling detector detects that coupling 12 has passed the lower gate, the lifting device stops operating, causing coupling 12 of pipe fitting 11 to stop in the balance four-way between the upper and lower gates. The lower gate closes, the vent valve opens, and the balance four-way is vented to release the pressure inside until it matches the external pressure. Then, the vent valve closes and the upper gate opens. The lifting device lifts pipe fitting 11. After coupling 12 of pipe fitting 11 passes the upper gate, the upper gate closes, the balance valve opens, and the pressure inside the balance four-way is balanced with the well pressure. The balance valve closes and the lower gate opens. The lifting device and slip assembly cycle through the above actions until the coupling detector confirms that the position of coupling 12 of the next pipe fitting 11 is accurate and stops coupling 12 of the next pipe fitting 11 at the upper uncoupling height of the upper uncoupling mechanism 400.

[0113] Afterwards, the lifting mechanism 200 rotates the gripper 220 to grab the pipe fitting 11, the uncoupling mechanism 400 moves to the wellhead 20 position to perform the uncoupling action, and the straightening mechanism 300 supports the pipe fitting 11.

[0114] After the upper uncoupling mechanism 400 completes the uncoupling, the liquid is drained using the splash guard 450 collection tube.

[0115] After the pipe drain fluid is collected, the uncoupling mechanism 400 returns to the starting point, and the straightening mechanism 300 pushes the pipe fitting 11 so that the pipe fitting 11 is supported by the power cat track 100.

[0116] Then, the lifting mechanism 200 descends and places the pipe fitting 11 into the V-groove 161 of the power cat track 100.

[0117] Afterwards, the V-groove 161 of the power catwalk 100 is lowered back to the ground, and the pipe fitting 11 is flipped over and unloaded onto the power pipe bridge, completing the well exit.

[0118] After completing the well exit work of the above-mentioned pipe fitting 11, the pipe lifting mechanism 200 adopts a posture of avoiding the pipe fitting, and the pipe lifting mechanism 200 moves upward to the pipe grabbing position, ready to grab the next pipe fitting 11.

[0119] The well entry procedure is as follows:

[0120] First, the pipe fitting assembly / disassembly equipment is initialized. The main unit's moving or fixed slips are closed, and the lifting device returns to its starting point. The upper / lowering mechanism 400, the straightening mechanism 300, and the power catwalk 100 are reset to their starting points. The pipe lifting mechanism 200's gripper 220 rotates to the angle for gripping the pipe fitting, and the winch drives the pipe lifting mechanism 200 to the position ready to grip the pipe fitting 11.

[0121] Afterwards, the power cat path 100 hooks the pipe fitting 11 from the power pipe bridge and sends it onto the platform 530.

[0122] Afterwards, the pipe lifting mechanism 200 moves upward. When the pipe lifting mechanism 200 senses the pipe fitting 11, the gripper 220 closes, and the pipe lifting mechanism 200 continues to move upward carrying the pipe fitting 11.

[0123] Then, the straightening mechanism 300 extends to support the pipe fitting 11 and pushes the pipe fitting 11 above the wellhead 20.

[0124] Afterwards, the docking limiter moves to the wellhead 20 position, the docking limiter is closed, the auxiliary pipe 11 is aligned, and the axes of the two pipes 11 coincide; at the same time, the power cat walkway 100 is lowered back to the ground to prepare for transporting the next pipe 11.

[0125] After alignment, the docking limiter is opened, the upper and lower coupling tool 410 is moved to the wellhead 20, and the upper coupling operation is performed.

[0126] Afterwards, the straightening mechanism 300 retracts and returns to the starting point. At this time, the gripper 220 of the pipe lifting mechanism 200 opens and assumes a posture to avoid the pipe fitting.

[0127] Afterwards, the fixed slip group closes, the movable slip group opens, the lifting device is raised to the set position, the movable slip group closes, the fixed slip group opens, and the lifting device descends back to the starting point to send the pipe fitting 11 into the well.

[0128] Afterwards, the fixed slip group is closed, the movable slip group is opened, the lifting device is raised, and after the lifting device is raised to the position, the movable slip group is closed and the fixed slip group is opened. At the same time, the power catwalk 100 is raised to send another pipe fitting 11 onto the platform 530, ready to be inserted into the well, to carry out the insertion work of the next pipe fitting 11.

[0129] In low-pressure mode, repeat the above steps until the coupling detection detects coupling 12. The control mechanism 600 controls the lifting device according to the coupling detection result to stop coupling 12 at the upper and lowering height of the upper and lowering tool 410.

[0130] In high-pressure mode, after the coupling 12 of pipe fitting 11 passes the upper gate, it stops in the balance four-way between the upper and lower gates. The upper gate closes, the balance valve opens, and when the pressure inside the balance four-way reaches equilibrium with the well pressure, the lower gate opens. The lifting mechanism drives pipe fitting 11 to continue descending and passes the lower gate blowout preventer. Then, the lower gate closes, the blowout valve opens, and the balance four-way is vented. After the pressure inside the balance four-way reaches the same as the external pressure, the blowout valve closes and the upper gate opens. The lifting device and slips cycle through the above steps until the coupling detector detects coupling 12. The control mechanism 600 controls the lifting device according to the coupling detection result to stop coupling 12 at the upper uncoupling height of the upper uncoupling tool 410 and continue the well entry operation.

[0131] Afterwards, the pipe lifting mechanism 200 descends to the position of the connecting fitting 11, and the pipe lifting mechanism 200 moves into a connecting posture, preparing to grab the next pipe fitting 11.

[0132] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0133] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A pipe fitting assembly / disassembly device, characterized in that, include: The system includes a power catwalk, a pipe lifting mechanism, a straightening mechanism, a buckle-on / off mechanism, a live working machine, and a control mechanism. The power cat track is located on one side of the live press machine. The power cat track is used to switch the pipe fitting between a flat position and an inclined position, and to transfer the pipe fitting between the pipe lifting mechanism and the pipe fitting carrying mechanism. The pipe lifting mechanism is used to transfer the pipe between the power catwalk and the live press machine. The pipe lifting mechanism includes a mounting frame, a gripper, and a gripper drive. The mounting frame is movably mounted on the mast of the live press machine and is connected to the lifting drive of the live press machine. The gripper is mounted on the mounting frame and is connected to the gripper drive. The gripper drive is used to drive the opening and closing of the gripper. The straightening mechanism includes a base and a support member. The base is installed on the live press machine, and the support member is used to support the pipe. The support member is rotatably installed on the base so that the pipe can switch between a vertical state and an inclined state. The upper uncoupling mechanism includes an upper uncoupling tool, which is used to upper and lower the coupling on the pipe fitting. The pressurized working machine is used to disassemble or install the pipe fittings inside the well without releasing the pressure; The control mechanism includes a controller, and the power catwalk, the pipe lifting mechanism, the straightening mechanism, the upper and lower buckle mechanism, and the live-line working machine are all connected to the controller. The controller is used to control the working status of each device connected to it. The control mechanism also includes multiple sensors, and each of the power catwalk, the pipe lifting mechanism, the straightening mechanism, the upper and lower buckle mechanism, and the live-line working machine is equipped with a sensor. Each sensor is connected to the control mechanism and is used to transmit the working status of the device connected to it to the controller.

2. The pipe fitting assembly and disassembly equipment according to claim 1, characterized in that, The lifting mechanism also includes a swing drive, and the gripper is rotatably mounted on the mounting frame via the swing drive. The swing drive is used to drive the gripper to rotate axially relative to the mast, so as to switch between a working position and a avoidance position.

3. The pipe fitting assembly and disassembly equipment according to claim 2, characterized in that, The pipe lifting mechanism also includes a connecting rod and a flipping drive. The gripper is rotatably mounted on one end of the connecting rod, and the other end of the connecting rod is rotatably mounted on the mounting frame. The swing drive is connected between the mounting frame and the connecting rod, and the flipping drive is connected between the connecting rod and the gripper.

4. The pipe fitting assembly and disassembly equipment according to claim 2, characterized in that, The pipe lifting mechanism further includes a gripper seat and a guide member. The gripper seat is mounted on the mounting frame, the gripper is mounted on the gripper seat, and the guide member includes a first guide rod and a second guide rod. The first guide rod and the second guide rod are both fixed to the gripper seat, and the first guide rod and the second guide rod form a guide flare.

5. The pipe fitting assembly and disassembly equipment according to claim 1, characterized in that, The straightening mechanism also includes a connecting arm, one end of which is rotatably mounted on the base, and the support member is connected to the other end of the connecting arm; The support member includes a support roller, a first limiting member, and a second limiting member. The first limiting member and the second limiting member are respectively connected to opposite ends of the support roller along its axial direction. The first limiting member and the second limiting member form a flared structure, and the orientation of the flared opening is the same as the support direction of the support roller.

6. The pipe fitting assembly and disassembly equipment according to claim 5, characterized in that, The straightening mechanism also includes an anti-detachment component, which is rotatably mounted on one end of the connecting arm where the support member is located, so as to avoid or block the flared openings of the first limiting member and the second limiting member.

7. The pipe fitting assembly and disassembly equipment according to claim 1, characterized in that, The upper unhooking mechanism further includes a support, a mounting base, and a docking drive component. The support is mounted on the live working machine, the mounting base is movably mounted on the support, the upper unhooking tool is mounted on the mounting base, and the docking drive component is connected to the mounting base to drive the mounting base to switch between a working position and a clearance position.

8. The pipe fitting assembly and disassembly equipment according to claim 7, characterized in that, The upper unhooking mechanism also includes a splash guard and a telescopic drive. The splash guard includes a first half and a second half. Both the first half and the second half are mounted on the mounting base via the telescopic drive. The telescopic drive is used to drive the first half and the second half to dock or separate. When the first half and the second half are docked, the splash guard has a receiving cavity, which is connected to the pipe drainage collection device. The upper shackle mechanism further includes a docking limiting member, which includes a third half and a fourth half. The third half is fixed to the first half, and the fourth half is fixed to the second half. When the first half and the second half are in a docking state, the docking limiting member has a guide flare and a limiting cavity that are interconnected. The guide flare is located above the limiting cavity and is arranged facing upwards. The limiting cavity is used to make the axes of the two pipe fittings coincide.

9. The pipe fitting assembly and disassembly equipment according to claim 1, characterized in that, The pipe fitting disassembly and assembly equipment includes a drive mechanism, which includes an engine and a hydraulic mechanism. The hydraulic mechanism is connected to the engine and is used to drive the power catwalk, the pipe lifting mechanism, the straightening mechanism, the upper and lower buckle mechanism, and the live-line working machine.

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