CN117295873A - Pipe fitting dismounting equipment - Google Patents

Abstract

The utility model discloses a pipe fitting dismounting device, which comprises a power catwalk (100), a pipe lifting mechanism (200), a righting mechanism (300), a screwing-on and unscrewing mechanism (400), a pressurized working machine (500) and a control mechanism (600), wherein the control mechanism comprises a controller (610), the power catwalk (100), the pipe lifting mechanism (200), the righting mechanism (300), the screwing-on and unscrewing mechanism (400) and the pressurized working machine (500) are all connected with the controller (610), and the controller (610) is used for controlling the working states of all devices connected with the controller; the problem that in the existing operation process with pressure, operation is assisted by multiple people when the pipe fitting is disassembled and assembled, the danger is relatively high, and the working efficiency is relatively low can be solved.

Description

Pipe fitting dismounting equipment

Technical Field

The application belongs to the technical field of oil gas exploitation, and particularly relates to pipe fitting disassembly and assembly equipment.

Background

In the field of oil and gas exploitation, the pressurized operation is an advanced underground operation mode for disassembling and assembling pipe fittings under the conditions of no well killing and no pressure releasing, which can furthest realize the protection of oil and gas layers and environment. At present, a plurality of workers are usually required to cooperate in the working process of working equipment such as a pressurized working machine, wherein two to three workers are generally required to carry out equipment operation, tool and pipe fitting connection and the like on a working table, on one hand, the risk of high-altitude operation is relatively high, on the other hand, the workers carry out high-intensity labor in the windy and sunny environment for a long time, and the working efficiency is relatively low.

Disclosure of Invention

The purpose of this application embodiment is to provide a pipe fitting dismouting equipment to in solving present area and pressing the operation in-process, need many people to assist the operation when dismouting pipe fitting, the danger is higher relatively, and the relatively lower problem of work efficiency.

The embodiment of the application discloses pipe fitting dismouting equipment, it includes: a power catwalk, a pipe lifting mechanism, a righting mechanism, a screwing-on and unscrewing mechanism, a pressurized working machine and a control mechanism,

the power catwalk is arranged at one side of the pressurized working machine, is used for switching the pipe fitting between a flat state and an inclined state, and is used for receiving and sending the pipe fitting between the pipe lifting mechanism and the pipe fitting bearing mechanism;

the pipe lifting mechanism is used for receiving and conveying the pipe fitting between the power catwalk and the pressurized working machine and comprises a mounting frame, a gripper and a gripper driving piece, wherein the mounting frame is movably mounted on a mast of the pressurized working machine and is connected with a lifting driving piece of the pressurized working machine, the gripper is mounted on the mounting frame and is connected with the gripper driving piece, and the gripper driving piece is used for driving the gripper to open and close;

The centering mechanism comprises a base and a supporting piece, the base is mounted on the pressurized working machine, the supporting piece is used for supporting the pipe fitting, and the supporting piece is rotatably mounted on the base so as to enable the pipe fitting to be switched between a vertical state and an inclined state;

the make-up and break-out mechanism comprises a make-up and break-out tool which is used for making up and break-out the pipe fitting;

the pressurized working machine is used for disassembling or installing the pipe fitting in the shaft under the condition of not releasing pressure;

the control mechanism comprises a controller, the power catwalk, the pipe lifting mechanism, the righting mechanism, the screwing-on and unscrewing mechanism and the pressurized working machine are all connected with the controller, and the controller is used for controlling the working state of each device connected with the controller.

The embodiment of the application discloses pipe fitting dismounting equipment, wherein a power catwalk can enable a pipe fitting to be switched between a flat-laid state and an inclined state, and the pipe fitting is sent between a pipe lifting mechanism and a pipe fitting bearing mechanism; the pipe lifting mechanism is movably arranged on a mast of the pressurized working machine through a mounting frame of the pipe lifting mechanism, and the mounting frame can do lifting motion relative to the mast under the action of a lifting driving piece; meanwhile, the pipe lifting mechanism is provided with a grip, and the grip is connected with a grip driving piece so as to drive the grip to open and close under the action of the grip driving piece, so that the grip can lock or loosen the pipe fitting, and the pipe lifting mechanism can further send and receive the pipe fitting between the power catwalk and the pressurized working machine; the centralizing mechanism is rotatably arranged on the supporting piece of the base, so that a supporting effect can be provided for the pipe fitting, the pipe fitting can be switched between a vertical state and an inclined state, and the pipe fitting can be ensured to be stably connected between a power catwalk and the pressurized working machine; in addition, in the process of disassembling and assembling the pipe fittings, a break-out tool in the break-out mechanism can provide a break-out function for the pipe fittings, so that the connection and the separation between the two pipe fittings are realized; the pressurized working machine is used for disassembling or assembling the pipe fitting in the shaft under the condition of no pressure release, so that the purpose of disassembly and assembly of the pipe fitting under pressure is realized.

In addition, be equipped with control mechanism in the pipe fitting dismouting equipment that this application embodiment disclosed, control mechanism includes the controller, power catwalk, carry the pipe mechanism, right mechanism, go up the shackle mechanism and take the pressure workover rig all to be connected with the controller, with the operating condition who utilizes each device that controller control is connected with it, thereby make pipe fitting dismouting equipment possess automatic control and automatic dismouting's ability, and then need not the staff and carry out the high altitude effect in workstation equipotential department for a long time, can promote the security in the working process on the one hand, on the other hand, utilize automation equipment can greatly reduce the manpower input, and promote work efficiency.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

FIG. 1 is a schematic view of a pipe fitting removal apparatus according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of the pipe fitting removal apparatus of the present embodiments in another direction;

FIG. 3 is a schematic view of the pipe fitting removal apparatus of the present embodiments in a further orientation;

FIG. 4 is an assembly view of a power catwalk and a pipe carrying mechanism in a pipe fitting removal apparatus according to an embodiment of the present application;

FIG. 5 is a schematic view of a medium power catwalk and a pipe carrying mechanism in a pipe fitting removal apparatus according to an embodiment of the present application in another direction;

FIG. 6 is a schematic view of the structure of a power catwalk in the pipe fitting removal apparatus disclosed in the embodiments of the present application;

FIG. 7 is a schematic view of the structure of the power catwalk in the pipe fitting removing apparatus according to the embodiment of the present application in the other direction;

FIG. 8 is a schematic view of a pipe lifting mechanism in a pipe fitting dismounting device according to an embodiment of the present application;

FIG. 9 is a schematic structural view of a centralizer in a pipe fitting removal apparatus according to an embodiment of the present disclosure;

fig. 10 is a schematic structural view of a shackle mechanism in a pipe fitting disassembly apparatus according to an embodiment of the present application.

Reference numerals illustrate:

11-pipe fitting, 12-coupling,

20-well mouth,

100-power catwalk, 110-catwalk main body, 120-hand hook, 130-guide arm, 140-chute, 150-bearing platform, 161-V-shaped groove, 162-pushing ramp, 171-turning cylinder, 172-hand hook cylinder, 173-lifting cylinder, 174-pushing cylinder, 180-main arm stay bar, and,

200-lifting tube mechanism, 210-mounting frame, 220-gripper, 231-gripper driving piece, 232-swing driving piece, 233-turning driving piece, 240-connecting rod, 250-gripper seat, 260-guiding piece,

300-righting mechanism, 310-base, 321-supporting roller, 322-first limiting piece, 323-second limiting piece, 324-anti-drop piece, 331-first connecting arm, 332-second connecting arm,

400-of a shackle mechanism, 410-of a shackle tool, 421-of a support, 422-of a mounting seat, 430-of a butt joint driving piece, 441-of a guide flaring, 442-of a limiting cavity, 450-of a splash proof box, 460-of a telescopic driving piece,

500-a pressurized working machine, 510-a machine body, 520-a mast, 530-an upper platform, 540-an overflow blowout control device,

600-control mechanism, 610-controller,

900-pipeline bearing mechanism, 910-pipe bridge base, 920-pipe bridge and 930-deflecting oil cylinder.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings of the embodiments of the present application, and it is apparent that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

As shown in fig. 1-10, the embodiment of the application discloses a pipe fitting dismounting device, which is used in the field of oil and gas exploitation and provides dismounting function for a pipe fitting 11 such as an oil pipe in a pressure environment. Specifically, in the oil and gas exploitation process, a plurality of pipes 11 for conveying liquid are usually required to be installed underground, the pipes 11 are connected with each other and extend to the underground continuously, the pipe disassembling and assembling device disclosed in the embodiment of the application can send the pipes 11 separated from each other into the underground one by one, and before the pipes 11 are sent into the underground, a reliable connection relationship is formed between any two adjacent pipes 11; meanwhile, the pipe fitting dismounting device can also lift the plurality of pipe fittings 11 connected with each other underground from underground one by one, and separate any adjacent two pipe fittings 11 after lifting.

As shown in fig. 1, the pipe fitting dismounting device disclosed in the embodiment of the present application includes a power catwalk 100, a pipe lifting mechanism 200, a righting mechanism 300, a shackle mechanism 400, a pressurized working machine 500, and a control mechanism 600. In addition, for convenience of description, only the process of installing the pipe 11 of the pipe installation and removal apparatus, that is, the process of running the pipe 11 down the well, is described in detail, and the process of removing the pipe 11 is not described in detail herein, contrary to the installation process.

As shown in fig. 4 to 7, the power catwalk 100 is a device for receiving the pipe 11. Generally speaking, the pipe fitting 11 to be installed is regularly laid on the pipe fitting carrying mechanism 900 to achieve the purpose of storing the pipe fitting 11, the pipe fitting carrying mechanism 900 may be a power pipe bridge, which specifically includes a pipe bridge base 910, a pipe bridge 920 and a deflecting cylinder 930, the pipe bridge 920 is located above the pipe bridge base 910, and one end of the pipe bridge 920 is connected with the pipe bridge base 910 through the deflecting cylinder 930, so that the pipe bridge 920 can rotate to an inclined state relative to the pipe bridge base 910 by using the deflecting cylinder 930, and the pipe fitting 11 carried on the pipe bridge 920 can roll to the other end of the pipe bridge 920 under the action of self gravity.

When the pipe 11 is installed downhole, the pressurized working machine 500 needs to provide an auxiliary dismounting function, and the pressurized working machine 500 is required to install the pipe 11 on the premise that the pipe 11 is in a vertical state, and for this purpose, the pipe 11 needs to be switched from a flat state to a vertical state by using the power catwalk 100. Further, the power catwalk 100 may be provided at one side of the pressurized working machine 500, and the pipe 11 may be taken between the pressurized working machine 500 and the pipe lifting mechanism 200 by the power catwalk 100.

Specifically, the power catwalk 100 includes a catwalk main body 110, a hook 120, a guide arm 130, a chute 140, a carrying platform 150, a main arm stay 180, and a plurality of driving devices, which may specifically be air cylinders or the like. The pipe fitting bearing mechanism 900 is located catwalk main part 110 one side, pipe fitting bearing mechanism 900 is used for bearing the pipe fitting 11 of waiting to install (or pull down), the pointing handle 120 is used for moving the pipe fitting 11 that bears on pipe fitting bearing mechanism 900 to the load-bearing platform 150, guide arm 130 is used for providing the direction bearing effect in the removal in-process of pipe fitting 11, make pipe fitting 11 can freely roll along the extending direction of guide arm 130, reduce the removal degree of difficulty of pipe fitting 11, load-bearing platform 150 is installed on catwalk main part 110 through spout 140 slidable, be provided with the push ramp 162 on the load-bearing platform 150, push ramp 162 is equipped with the V-arrangement groove, push ramp 162 is used for upwards pushing away or downwards send pipe fitting 11, V-arrangement groove 161 is used for bearing pipe fitting 11, the opposite both ends of main arm vaulting pole 180 swing joint is on load-bearing platform 150 and catwalk main part 110 respectively.

More specifically, the plurality of driving devices specifically includes a flipping cylinder 171, a pointing cylinder 172, a lifting cylinder 173, and a pushing cylinder 174. The overturning oil cylinder 171 and the pointing oil cylinder 172 are connected with the pointing handle 120, the overturning oil cylinder 171 is used for driving the pointing handle 120 to overturn so as to achieve the purposes of connecting pipes and delivering pipes, and the pointing oil cylinder 172 is used for driving the pointing handle 120 to move the pipe fitting 11; the lifting oil cylinder 173 is mounted on the catwalk main body 110, and the lifting oil cylinder 173 is connected with the middle part of the main arm stay bar 180 to drive the main arm stay bar 180 to rotate relative to the catwalk main body 110, so that the bearing platform 150 is switched between a state parallel to the ground and a state inclined relative to the ground; the pushing cylinder 174 is connected to the pushing ramp 162, so as to drive the pushing ramp 162 to act when the carrying platform 150 is tilted in place, so as to achieve the purpose of taking in and taking out the pipe fitting 11 from the pipe lifting mechanism 200.

As described above, the catwalk 100 can switch the pipe 11 between the flat state and the inclined state to ensure that the pipe 11 supported on the push ramp 162 can be stably carried on the push ramp 162, ensuring safe production. Then, in order to enable the pipe 11 to be switched from the inclined state to the vertical state, the lifting mechanism 200 and the righting mechanism 300 disclosed by the above-described embodiment are required.

In detail, the pipe lifting mechanism 200 includes a mounting frame 210, a gripper 220 and a gripper driving member 231, wherein the mounting frame 210 is movably mounted on a mast 520 of the pressurized working machine 500, and the mounting frame 210 is connected with a lifting driving member of the pressurized working machine 500, so that the mounting frame 210 can lift relative to the mast 520 under the driving action of the lifting driving member, thereby achieving the purpose of lifting pipes to a high place or lowering pipes to a well. In order to ensure that the pipe lifting mechanism 200 can form a reliable assembly relationship with the pipe 11, as described above, the pipe lifting mechanism 200 is provided with the grip 220, and the grip 220 is mounted on the mounting frame 210, so that the grip 220 can move up and down along with the mounting frame 210 relative to the mast 520, and meanwhile, the grip 220 is connected with the grip driving member 231, so that the grip driving member 231 is utilized to drive the grip 220 to open and close, thereby realizing locking and releasing of the pipe 11. The gripper driving part 231 can specifically adopt a linear driving mode to enable the two halves of the gripper 220 to move relatively, so that the gripper 220 can perform grabbing and releasing actions.

In order to prevent the position of the pipe lifting mechanism 200 from interfering with the operation of the hydraulic working machine 500, the pipe lifting mechanism 200 may be further provided with a yielding drive member, which may drive the pipe lifting mechanism 200 to rotate or move relative to the mast 520, etc., so that the pipe lifting mechanism 200 can be caused to clear the working position of the hydraulic working machine 500 by the yielding drive member after lifting the pipe 11 to the corresponding position on the hydraulic working machine 500. Of course, the yielding drive may also drive the lifting mechanism 200 in other ways, which will not be described in detail herein.

The righting mechanism 300 can stably switch between the vertical state and the inclined state by providing a supporting function for the pipe fitting 11 and driving the pipe fitting 11 to rotate by taking the top end of the pipe fitting 11 as the center of a circle, so that the safety of the disassembly and assembly work of the pipe fitting 11 is improved. Specifically, the centering mechanism 300 is mounted to the pressurized working machine 500, and the centering mechanism 300 includes a base 310 and a support member, through which the entire centering mechanism 300 can be mounted to the pressurized working machine 500, for supporting the pipe 11, for example, the support member may be a support rod, which may provide a supporting and limiting function for the pipe 11. At the same time, the support is rotatably mounted to the base 310, thereby ensuring that the support is able to drive the pipe 11 supported thereon between an inclined state and a vertical state. More specifically, the base 310 may be fixedly mounted on the work platform of the pressurized work machine 500 by a connection member such as a bolt, and the support bar may be rotatably mounted to the base 310 by a rotating motor, so that the support bar can be rotated relative to the base 310 by the driving of the rotating motor. Of course, the apparatus for driving the support rod to rotate may be other kinds of driving apparatuses, which are not illustrated here.

Similarly, a yielding drive member may be provided for the centering mechanism 300, so that the yielding drive member may be used to drive the centering drum to rotate or move relative to the mast 520, and after the centering mechanism 300 centers the pipe 11 to the corresponding position, the centering mechanism 300 may be enabled to avoid the working position of the belt-pressure working machine 500 under the action of the yielding drive member.

The pipe lifting mechanism 200 can switch the pipe 11 from the inclined state to the vertical state with the aid of the righting mechanism 300, and then, under the action of the lifting drive member, the pipe 11 can be lifted to prepare for the pipe 11 being mounted to the corresponding position of the pressurized working machine 500. As described above, it is necessary to connect any adjacent two pipes 11 to each other before the pipes 11 are conveyed downhole, and for this purpose, it is necessary to connect the adjacent two pipes 11 together by the stab mechanism 400 before the operation of the pressurized working machine 500.

In detail, the shackle mechanism 400 includes a shackle tool 410, and each mechanism needs to be associated with a work position in the process of installing the righting mechanism 300 and the shackle mechanism 400. The tool 410 is used for breaking out the pipe 11, and the power source thereof may be an air pump or a hydraulic pump. In order to prevent the break-out tool 410 from interfering with the normal operation of the pressurized working machine 500, the break-out mechanism 400 further includes a support 421, and the break-out tool 410 is movably mounted on the support 421, so that the break-out tool 410 can be switched between a working position and a retracted position, and in the process of breaking out, the break-out tool 410 is moved to the working position relative to the support 421, and after the break-out work is completed, the break-out tool 410 is reset to the retracted position. As for the means for driving the movement of the break-out tool 410, it may be specifically a linear motor or a cylinder, etc., and is not limited herein.

After the stab-off mechanism 400 connects two adjacent tubulars 11 together, the pressurized work machine 500 is operated to remove or install the tubulars 11 in the wellbore without releasing pressure. That is, the pressurized work machine 500 may install and press the tubular 11 into the well, or remove the tubular 11 from the well, without releasing the pressure.

And be equipped with control mechanism 600 in the pipe fitting dismouting equipment that this application embodiment disclosed, control mechanism 600 includes controller 610, at the in-process of installing pipe fitting dismouting equipment, power catwalk 100, lifting tube mechanism 200, righting mechanism 300, on-hook mechanism 400 and area press work machine 500 all are connected with controller 610, and then make controller 610 can control the operating condition of each device that is connected with it, thereby make each action device in the pipe fitting dismouting equipment all can be controlled through remote control's mode, realize the purpose of automation and intelligent operation.

The embodiment of the application discloses a pipe fitting dismounting device, wherein a power catwalk 100 can switch a pipe fitting 11 between a flat state and an inclined state, and the pipe fitting 11 is sent between a pipe lifting mechanism 200 and a pipe fitting bearing mechanism 900; the pipe lifting mechanism 200 is movably mounted on the mast 520 of the pressurized working machine 500 through the mounting frame 210 thereof, and the mounting frame 210 can do lifting motion relative to the mast 520 under the action of a lifting driving member; meanwhile, the pipe lifting mechanism 200 is provided with a grip 220, and the grip 220 is connected with a grip driving piece 231 so as to drive the grip 220 to open and close under the action of the grip driving piece 231, so that the grip 220 can lock or loosen the pipe fitting 11, and the pipe lifting mechanism 200 can further send and receive the pipe fitting 11 between the power catwalk 100 and the pressure working machine 500; the righting mechanism 300 can provide a supporting function for the pipe fitting 11 through a supporting piece rotatably installed on the base 310, and enables the pipe fitting 11 to be switched between a vertical state and an inclined state, so that the pipe fitting 11 can be ensured to stably finish the pick-up and delivery work between the power catwalk 100 and the pressurized working machine 500; in addition, during the disassembly and assembly of the pipe fittings 11, the pipe fittings 11 can be provided with a tripping function by a tripping tool 410 in the tripping mechanism 400, so that the connection and the separation between the two pipe fittings 11 are realized; the pressurized working machine 500 is used for disassembling or assembling the pipe fitting 11 in the shaft under the condition of not releasing pressure, so as to realize the purpose of disassembling and assembling the pipe fitting 11 under pressure.

In addition, be equipped with control mechanism 600 in the pipe fitting dismouting equipment that this application embodiment disclosed, control mechanism 600 includes controller 610, power catwalk 100, lifting tube mechanism 200, righting mechanism 300, go up and break out mechanism 400 and area press work machine 500 all are connected with controller 610, with the operating condition who utilizes each device that controller 610 control is connected with it, thereby make pipe fitting dismouting equipment possess automatic control and automatic dismouting's ability, and then need not the staff and carry out the high altitude effect in workstation equipotential department for a long time, on the one hand can promote the security in the working process, on the other hand, utilize automation equipment can greatly reduce the manpower input, and promote work efficiency.

Further, the control mechanism 600 further includes a plurality of sensors, where the power catwalk 100, the pipe lifting mechanism 200, the righting mechanism 300, the fastening and unfastening mechanism 400 and the belt pressure working machine 500 are all provided with sensors, each sensor is connected with the controller 610, so that each sensor can respectively transmit the working state of the connected device to the controller 610, and it is ensured that the controller 610 can acquire whether the control command is accurately executed. As described above, each of the power catwalk 100, the pipe lifting mechanism 200, the righting mechanism 300, the fastening/unfastening mechanism 400 and the belt-pressure working machine 500 includes one or more operation parts, and in order to ensure reliable performance of the pipe-line fastening/unfastening operation, each of the operation parts in the above devices is provided with a sensor in one-to-one correspondence, and the types of the sensors may be correspondingly configured according to the detected operation modes of the devices, and the sensors include, but are not limited to, a position sensor, an open/close sensor, a finger weight sensor, and the like.

Based on the above-described technical solution, by connecting each sensor to the control mechanism 600, each sensor is enabled to transmit the operating state of the device connected thereto to the controller 610, respectively. For example, the power catwalk 100 may be provided with a plurality of sensors, and the plurality of sensors are respectively matched with the V-shaped groove 161, the turning cylinder 171, the pointing cylinder 172, the lifting cylinder 173, the pushing cylinder 174 and other devices of the power catwalk 100 in a one-to-one correspondence manner, so that the plurality of sensors are utilized to detect the specific working state of the power catwalk 100. Correspondingly, the respective actuating devices in the lifting mechanism 200, the righting mechanism 300, the screwing-on and unscrewing mechanism 400 and the pressurized working machine 500 may be provided with corresponding sensors in a one-to-one correspondence manner, so as to ensure that the actuating states of the respective mechanisms can be reliably detected. Meanwhile, each sensor can transmit the detection result of the sensor to the controller 610, so that the controller 610 can acquire the actual working states of the mechanisms such as the power catwalk 100 and the like, the control command can be accurately executed by the corresponding mechanism, and the reliability of the pipe fitting dismounting equipment is further improved.

As described above, the pipe lifting mechanism 200 may be provided with a yielding drive member so that the pipe lifting mechanism 200 can be caused to avoid the operation position of the belt-pressure operation machine 500 by the yielding drive member, thereby preventing the normal operation of the mechanism such as the belt-pressure operation machine 500 from being hindered when the pipe lifting mechanism 200 is not required to operate.

In another embodiment of the present application, the pipe lifting mechanism 200 of the pipe fitting dismounting device further includes a swing driving member 232, and the gripper 220 is rotatably mounted on the mounting frame 210 through the swing driving member 232, where the swing driving member 232 is configured to drive the gripper 220 to axially rotate relative to the mast 520, so that the gripper 220 is switched between the working position and the avoiding position.

Specifically, the swing driving member 232 is configured to provide a linear driving function, and the swing driving member 232 may be a cylinder, a linear motor, or the like, and may enable the hand grip 220 to directly or indirectly form a rotation fit relationship with the mounting frame 210 by means of hinging or the like. In this case, one end of the swing driving member 232 may be connected to the mounting frame 210, and the other end may be connected to the grip 220, so that the grip 220 may rotate with respect to the mounting frame 210 in the case that the swing driving member 232 performs a telescopic motion, and thus the relative position between the grip 220 and the mounting frame 210 may be changed, more specifically, the distance between the grip 220 and the mounting frame 210 in the axial direction perpendicular to the mounting frame 210 may be changed, so that the grip 220 may be located relatively close to the mounting frame 210 to avoid the working area of the belt press working machine 500. Of course, during installation of the swing drive 232, both the mounting bracket 210 and the grip 220 need to be in a rotationally mating relationship with the swing drive 232 in order to ensure proper operation of the swing drive 232.

In order to make the distance between the gripper 220 and the mounting frame 210 relatively larger, the movement range of the gripper 220 itself and the movement range of the mounting frame 210 relatively larger, the pipe lifting mechanism 200 further includes a connecting rod 240, the gripper 220 is rotatably mounted at one end of the connecting rod 240, and the other end of the connecting rod 240 is rotatably mounted at the mounting frame 210, so that 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.

On this basis, the swing driving member 232 is connected between the mounting frame 210 and the connecting rod 240, so as to ensure that the connecting rod 240 can stably form a relatively fixed relationship with the mounting frame 210, and the connecting rod 240 and the axial direction of the mast 520 are arranged at a certain angle by utilizing the swing driving member 232, so that the connecting rod 240 is prevented from falling under the action of self gravity in an uncontrolled manner. Meanwhile, under the action of the swing driving piece 232, the connecting rod 240 can also rotate axially relative to the mast 520, so that the distance between the gripper 220 and the mounting frame 210 is changed, and the purpose of avoiding the working area of the belt pressure working machine 500 is achieved.

In order to reduce the difficulty in avoiding the grip 220, according to the above embodiment, further, the pipe lifting mechanism 200 further includes a flip driving member 233, where the flip driving member 233 is connected between the connecting rod 240 and the grip 220, and the flip driving member 233 can provide a linear driving function, which may be specifically an air cylinder or a linear motor. Under the circumstance that the overturning driving piece 233 stretches and contracts, the gripper 220 can be driven to rotate relative to the connecting rod 240, so that the rotation difficulty of the gripper 220 is relatively smaller, the rotation angle of the gripper 220 is relatively larger, and the difficulty that the gripper 220 avoids a working area of the operation machine 500 under pressure is further reduced. Accordingly, in order to ensure that the flip driver 233 can function properly, both the grip 220 and the connecting rod 240 are rotatably connected to the flip driver 233.

As described above, the grip 220 is provided with the grip driving member 231, and the grip driving member 231 can drive the grip 220 to open and close so that the grip 220 performs the releasing and gripping actions. Further, in the pipe fitting disassembling and assembling device disclosed in the embodiment of the present application, the pipe lifting mechanism 200 further includes a grip holder 250 and a guide member 260, the grip holder 250 is mounted on the mounting frame 210, the grip 220 is mounted on the grip holder 250, the guide member 260 includes a first guide rod and a second guide rod, the first guide rod and the second guide rod are both fixed on the grip holder 250, and the first guide rod and the second guide rod form the guide flaring 441.

That is, in the embodiment of the present application, the gripper 220 is provided with the guide member 260, so that the gripper 220 can grip the pipe 11 by using the guide member 260 to provide a guiding function, and the difficulty of gripping the pipe 11 by the gripper 220 is reduced. The first guide bar and the second guide bar of the guide 260 may be fixed to the grip holder 250 by a fixed connection manner such as welding, and the guide flare 441 of the guide 260 is oriented to be the same as the opening of the grip 220.

As described above, the pipe fitting dismounting device disclosed in the embodiment of the present application is provided with the centering mechanism 300, where the centering mechanism 300 includes a supporting member, so that in the process that the pipe lifting mechanism 200 drives the pipe fitting 11 to move up and down, the vertical or inclined state of the pipe fitting 11 is changed by using the supporting member of the centering mechanism 300, so that the pipe fitting 11 can be normally transferred to the pressurized working machine 500 or the power catwalk 100.

Still further, the centering mechanism 300 further includes a connection arm, one end of which is rotatably mounted on the base 310, and the support member is connected to the other end of the connection arm, so that the rotation range of the support member is enlarged under the action of the connection arm, and thus the centering capability of the centering mechanism 300 is enhanced. Specifically, the extending direction of at least one part of the connecting arm is perpendicular to the supporting direction of the supporting piece, so that the connecting arm can ensure that the supporting range of the supporting piece is wider. More specifically, the connecting arms include 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, the second connecting arm 332 is connected to the other end of the first connecting arm 331, and the first connecting arm 331 and the second connecting arm 332 are vertically arranged, on this basis, the supporting member can be connected to the second connecting arm 332 at the end far away from the first connecting arm 331, so that the first connecting arm 331 and the second connecting arm 332 can provide a stable and reliable bearing function for the supporting member, and the supporting range of the supporting member is relatively wide.

Based on the above embodiment, the second connecting arm 332 is optionally a telescopic structure, that is, the second connecting arm 332 may include at least two parts, and the two parts extend in the same direction and are movably connected. On this basis, the distance between the support member and the first connecting arm 331 can be changed in the extending direction of the second connecting arm 332, so that after the righting mechanism 300 completes the righting operation, the support member and the pipe fitting 11 can be separated from each other by making the second connecting arm 332 perform the contracting action, and the working area of the belt press working machine 500 is avoided, so that the righting mechanism 300 is prevented from interfering with the normal operation of the belt press working machine 500.

As described above, the supporting member may be a supporting rod, in order to further improve the supporting stability of the supporting member, in this embodiment of the present application, the supporting member includes a first limiting member 322 and a second limiting member 323, where the first limiting member 322 and the second limiting member 323 form a flared structure, so as to provide an accommodating effect for the pipe 11 by using the flared structure formed by the first limiting member 322 and the second limiting member 323, and meanwhile, the first limiting member 322 and the second limiting member 323 may also provide a limiting effect for the pipe 11 from opposite sides of the pipe 11, so as to improve the stability of the fit between the pipe 11 and the supporting member; in addition, the flaring structure formed by the first limiting piece 322 and the second limiting piece 323 can also provide guiding function for the pipe fitting 11, so that the matching difficulty of the pipe fitting 11 and the supporting piece is reduced, and the disassembly and assembly difficulty of the pipe fitting 11 is further reduced.

Specifically, the first limiting member 322 and the second limiting member 323 may be made of metal materials, and may be in a fixed connection relationship by welding or the like, so as to provide reliable support and limiting effect for the pipe 11. And through making first locating part 322 and second locating part 323 all have certain size in the extending direction of pipe fitting 11, can further promote the bearing effect of first locating part 322 and second locating part 323 to pipe fitting 11.

In addition, considering that after the centering mechanism 300 is matched with the pipe fitting 11, the pipe lifting mechanism 200 still needs to continuously drive the pipe fitting 11 to move upwards or downwards, that is, in the working process of the pipe fitting dismounting device, the pipe fitting 11 and the centering mechanism 300 are rubbed with each other, in order to prevent the pipe fitting 11 and the centering mechanism from being damaged by mutual friction, optionally, the support disclosed in the embodiment of the application further comprises a support roller 321, and the first limiting piece 322 and the second limiting piece 323 are respectively connected to two opposite ends of the support roller 321 along the axial direction thereof, that is, one end of the support roller 321 is connected with the first limiting piece 322, and the other end of the support roller 321 is connected with the second limiting piece 323, so that the flaring direction of the flaring structure formed by the first limiting piece 322 and the second limiting piece 323 is the same with the support direction of the support roller 321.

Under the condition of adopting the technical scheme, the pipe fitting 11 and the supporting roller 321 can form a rolling friction fit relationship, so that the friction degree between the pipe fitting 11 and the righting mechanism 300 is greatly reduced, and the noise generated in the process of disassembling and assembling the pipe fitting 11 can be greatly reduced. More specifically, the supporting roller 321 may be in a cylindrical structure, in another embodiment of the present application, the diameter of the middle portion of the supporting roller 321 is smaller than that of the two end portions, and extends from the middle to the two sides, and the diameter of the supporting roller 321 is gradually increased, so that the supporting roller 321 can also provide a certain limiting effect for the pipe 11, and further improve the stability of the fit between the pipe 11 and the centering mechanism 300.

Further, the centering mechanism 300 disclosed in the embodiment of the present application may further include an anti-falling member 324, where the anti-falling member 324 is rotatably installed at one end of the connecting arm where the support member is located, so as to avoid the flaring of the first limiting member 322 and the second limiting member 323. That is, in the righting mechanism 300 disclosed in the embodiment of the present application, the anti-falling member 324 is utilized as a blocking structure of the flaring 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 flaring structure, the anti-falling member 324 has the capability of moving, specifically rotating, relative to the first limiting member 322 to open or close the flaring of the flaring structure.

Of course, in order to ensure that the righting mechanism 300 can automatically connect the pipe fitting 11, the anti-falling member 324 needs to be provided with a driving device, so that the driving device is used for driving the anti-falling member 324 to rotate relative to the supporting member, so that before the pipe fitting 11 needs to be connected, the anti-falling member 324 is opened to avoid the flaring of the supporting member, and under the condition that the pipe fitting 11 is supported on the supporting member, the anti-falling member 324 is closed, the flaring of the supporting member is blocked, and the supporting cooperation reliability between the pipe fitting 11 and the supporting member is further improved. The driving device may specifically change the position of the anti-release member 324 in a linear driving manner, and may specifically be an air cylinder, a linear motor, or the like.

As described above, the pipe fitting disassembly and assembly apparatus disclosed in the embodiments of the present application includes the stab-and-break mechanism 400, and the stab-and-break mechanism 400 includes the stab-and-break tool 410, with which the pipe fitting 11 can be stabbed and broken out to connect the two pipe fittings 11 together or separate the two pipe fittings 11 from each other. Similarly, the shackle mechanism 400 needs to have the capability of avoiding the working area of the pressurized working machine 500, for example, a driving mechanism may be connected to the shackle mechanism 400, so that the entire shackle mechanism 400 can move or rotate relative to the pressurized working machine 500, so that the shackle mechanism 400 can avoid the working area of the pressurized working machine 500 without requiring the operation of the shackle mechanism 400.

In another embodiment of the present application, the shackle mechanism 400 further includes a support 421, a mounting seat 422, and a docking driving member 430, wherein the support 421 is mounted on the pressurized working machine 500, the support 421 is used as a mounting base for other devices in the shackle mechanism 400, and the support 421 can be fixed on the pressurized working machine 500 through a connecting member such as a bolt; the mount pad 422 is the installation basis of the tool 410 that breaks out, and mount pad 422 movably installs in the support, and the tool 410 that breaks out installs in mount pad 422, through making butt joint driving piece 430 be connected with mount pad 422 for butt joint driving piece 430 can drive the mount pad 422 and switch between working position and dodge the position, and then under the circumstances that does not need the tool 410 work of breaking out, make the tool 410 that breaks out can dodge the area and press the work machine 500, prevent that the tool 410 etc. from producing the hindrance to the normal work of area and pressing the work machine 500.

Specifically, the support 421 and the mounting seat 422 may be made of metal, so as to ensure that they have high structural strength, and form a sliding fit relationship with each other by using a guide rail, and enable the two to perform linear relative movement. The docking driving member 430 may be a device having a linear driving function, such as an air cylinder or a linear motor, and by connecting the docking driving member 430 between the mounting seat 422 and the support 421, the docking driving member 430 can drive the mounting seat 422 to perform a linear motion based on the support 421, so that the shackle tool 410 mounted on the mounting seat 422 has a capability of avoiding the belt-pressure working machine 500.

Considering the disassembly process of the pipe fitting 11, especially the disassembly process of the pipe fitting 11, there may still be liquid in the pipe fitting 11, after the two connected pipe fittings 11 are disassembled and separated, in order to prevent the liquid in the pipe fitting 11 located above from leaking and contaminating the pipe fitting disassembly apparatus, in the pipe fitting disassembly apparatus of the present application, the make-up mechanism 400 further includes a splash box 450 to collect the liquid remaining in the pipe fitting 11 by using the splash box 450. Of course, the splash box 450 needs to collect the liquid of the pipe fitting 11 after the pipe fitting 11 is knocked out, for this purpose, during the disassembly of the pipe fitting 11, the pipe fitting 11 needs to be knocked out first, and then the pipe fitting 11 can be moved from the tool 410 to the splash box 450 by moving the mounting seat 422.

In order to ensure that the splash guard 450 has the capability of collecting liquid, the splash guard 450 may include a first half and a second half, and the screwing-and-unscrewing mechanism 400 further includes a telescopic driving member 460, where the first half and the second half are mounted on the mounting seat 422 through the telescopic driving member 460, and the telescopic driving member 460 is used to drive the first half and the second half to abut against or separate from each other, so that the splash guard 450 is moved by the abutting driving member 430 to a direction approaching the pipe 11 when the first half and the second half are separated from each other, and finally the pipe 11 may be located between the first half and the second half; accordingly, in the case where the first half and the second half are butted against each other, both are allowed to provide a sealed environment for the pipe 11 to collect the liquid remaining in the pipe 11. More specifically, with the first half and the second half in the docked state, the splash box 450 has a receiving cavity, and by having the receiving cavity in communication with the tube drain collection device, it is ensured that liquid in the tube 11 can flow through the splash box 450 into the tube drain collection device.

Specifically, the shapes of the first half and the second half may be designed correspondingly according to the specific shape and size of the pipe fitting 11, and by providing a sealing gasket or the like on one of the first half and the second half, after being driven by the telescopic driving member 460 and being abutted with each other, the two can form a relatively sealed accommodating cavity, thereby further preventing the liquid in the pipe fitting 11 from leaking.

More specifically, during the process of disassembling the pipe fitting 11, the pipe fitting 11 may be lifted from the well by the pressurized working machine 500, and when the coupling 12 of two connected pipe fittings 11 corresponds to the make-up mechanism 400, the make-up tool 410 may be engaged with the pipe fitting 11 by the butt drive 430 and the pipe fitting 11 is made to be broken out, at this time, under the action of gravity of the pipe fitting 11 itself, the pipe fitting 11 located above may still be pressed against the pipe fitting 11 located below, so that even if the two are broken out, they are not completely separated; after that, under the action of the butt-joint driving part 430, the screwing tool 410 and the splash-proof box 450 can move along the vertical direction of the pipe fitting 11 along with the mounting frame 210, the first half part and the second half part of the splash-proof box 450 are respectively positioned at two opposite sides of the pipe fitting 11, under the action of the telescopic driving part 460, the splash-proof box 450 can be in butt joint with the pipe fitting 11, the pipe fitting 11 positioned above can be lifted upwards by a preset distance by utilizing the pipe lifting mechanism 200, and the butt joint ends of the two pipe fittings 11 can be separated from each other, so that the splash-proof box 450 can collect liquid in the pipe fitting 11.

As described above, in the process of assembling and disassembling the pipe fitting 11, particularly in the process of installation, the pipe lifting mechanism 200 can lift the pipe fitting 11 from the power catwalk 100, and under the action of the righting mechanism 300, the pipe fitting 11 is gradually rotated from the inclined state to the vertical state, so as to ensure that the pipe fitting 11 has the foundation acted by the pressurized working machine 500. More specifically, in the case where the centering mechanism 300 centers the pipe 11 to the vertical state, the end of the pipe 11 away from the pipe lifting mechanism 200, that is, the lower end of the installed pipe 11, and the upper end of the pipe 11 installed downhole may not be in a relatively precise abutting state, or the lower end of the installed pipe 11 and the upper end of the pipe 11 installed downhole may not be aligned, due to errors or the precision of the fit between the pipe 11 and the centering mechanism 300.

Based on the above, in the case that the upper shackle mechanism 400 includes the splash box 450 and the telescopic driving member 460, further, the upper shackle mechanism 400 further includes a docking limiter, the docking limiter includes a third half and a fourth half, and the third half is fixed to the first half, and the fourth half is fixed to the second half, which enables the third half and the fourth half to also have the capability of being separated from each other and being docked with each other. Meanwhile, under the condition that the first half part and the second half part are in a butt joint state, the butt joint limiting piece formed by mutually butt joint of the third half part and the fourth half part is provided with a guide flaring 441 and a limiting cavity 442, the guide flaring 441 is positioned above the limiting cavity 442, the guide flaring 441 is arranged upwards, and the limiting cavity 442 is used for enabling the axes of the two pipe fittings 11 to coincide.

That is, in the case where the splashproof box 450 in the stabbing mechanism 400 has the docking and disconnecting capability, by disposing the docking limiter on the splashproof box 450, the number of the drive mechanisms can be reduced, and the difficulty in controlling the pipe fitting attaching/detaching apparatus can be reduced. Based on this, during the installation of the pipe 11, the butt-joint stopper may be driven to move in the radial direction of the pipe 11 by the butt-joint driver 430, and be engaged with the pipe 11 installed in the well; then, the installed pipe fitting 11 in a substantially vertical state is moved to the guide flaring 441 of the butt joint limiting piece by the pipe lifting mechanism 200 and the righting mechanism 300, and along with the lowering of the pipe lifting mechanism 200, the installed pipe fitting 11 can be made to extend into the limiting cavity 442, so that the aim of aligning the installed pipe fitting 11 with the pipe fitting 11 under the well is achieved, after that, the installed pipe fitting 11 is fixed by the pressurized working machine 500, and the screwing-on tool 410 is made to screw on the pipe fitting 11, so that the aim of connecting the two pipe fittings 11 can be achieved.

In the above embodiment, the pipe lifting mechanism 200, the righting mechanism 300, the fastening and unfastening mechanism 400, the belt-pressure working machine 500 and other mechanisms are all used for providing corresponding action, and during the working process of the pipe fitting dismounting device, the control mechanism 600 can be used for controlling the action conditions of the mechanisms, so that each mechanism correspondingly executes the corresponding command sent by the control mechanism 600. However, in the actual operation of the pipe fitting attaching/detaching apparatus, various factors may affect the pipe fitting attaching/detaching apparatus, and there may be cases where each mechanism may not perform properly or may perform excessively in the process of executing the command issued by the control mechanism 600. Therefore, in the pipe fitting dismounting device disclosed in the embodiment of the application, a video monitoring mechanism connected with the control mechanism 600 may be further provided, the video monitoring mechanism specifically includes a plurality of cameras, and the cameras are correspondingly installed at action positions in at least one of the lifting mechanism 200, the righting mechanism 300, the screwing-off mechanism 400, the belt-pressure working machine 500 and other mechanisms, so that specific working conditions of the corresponding mechanisms can be transmitted to the control mechanism 600 through lines, so that working conditions of the corresponding mechanisms can be directly acquired by workers, the workers can correspondingly control subsequent procedures and the like through the control mechanism 600 according to the specific working conditions of the mechanisms, and meanwhile, the video dismounting device can also serve as video storage files, is convenient for subsequent viewing and the like.

As described above, the pipe fitting assembling and disassembling device disclosed in the embodiment of the present application includes a plurality of driving devices for driving the movement of the components, such as the gripper driving device 231, the swing driving device 232, the overturning driving device 233, and the docking driving device 430, where the power source of the driving devices may be compressed gas or electric energy. In detail, the hydraulic mechanism is used for driving the power catwalk, the pipe lifting mechanism 200, the righting mechanism 300, the screwing-on and unscrewing mechanism 400, the pressurized working machine 500 and the like, which can make the power sources in the whole pipe fitting disassembling equipment consistent, reduce the design and assembling difficulty and reduce the processing and production cost to a certain extent.

In the pipe fitting dismounting device disclosed in the embodiment of the present application, the specific structure of the belt pressure working machine 500 may be the same as or similar to the structure of the existing belt pressure working machine 500, except that the belt pressure working machine 500 in the present application includes a plurality of sensors, and the motion devices in the belt pressure working machine 500 are all correspondingly provided with sensors, so as to detect the actual motion situation of the corresponding motion devices by using the sensors.

Specifically, the main structure of the pressurized work machine 500 includes a machine body 510, a mast 520, and an upper platform 530, the mast 520 and the upper platform 530 are each mounted on the machine body 510, and the action devices in the pressurized work machine 500 may include slips, blowout preventers, collar detectors, and the like. Additionally, the pressurized work machine 500 includes an overflow blowout preventer 540 mounted to the machine body 510 for providing a pressure relief function.

The mast 520 is provided with the lifting driving member, the lifting driving member may be specifically a winch, a steel wire rope of the winch bypasses the top of the mast 520, and the winch drives the pipe lifting mechanism 200 to move up and down along the mast 520 through a hook located at the front end of the winch. An encoder is mounted on the winch to position the winch and the elevation of the pipe lifting mechanism 200. Meanwhile, a standby winch is used for hoisting other tools used in the dismounting process of the pipe fitting 11.

In the pressurized working machine 500, the blowout preventer includes an upper ram blowout preventer, a lower ram blowout preventer and an annular blowout preventer, wherein the upper ram blowout preventer is used for isolating the pressure outside the wellhead 20 and balancing the pressure in the four-way when the pressure in the well is higher, the upper ram blowout preventer is matched with the lower ram blowout preventer, a balancing valve and a blowout opening valve to balance the pressure in the four-way, is positioned at the upper part of the balancing four-way, is connected with the balancing four-way by using a flange, and is provided with a position sensor for detecting the switching state of the upper ram blowout preventer.

The lower ram blowout preventer is used for isolating and balancing the pressure in the four-way joint and the well when the pressure in the well is higher, is matched with the upper ram blowout preventer, the balance valve and the blowout opening valve to balance the pressure in the four-way joint, is positioned at the lowest end of the pressurized working machine 500 and the uppermost end of the wellhead 20, is installed by using a flange, and is provided with a position sensor for detecting the opening and closing state of the lower ram blowout preventer.

The annular blowout preventer is used for extruding the pipe fitting 11 through a rubber core in the annular blowout preventer when the pressure in the well is not high, achieves the effect of isolating and sealing the pressure in the well mouth 20 and the outside of the well mouth 20, is positioned at the upper part of the upper flashboard blowout preventer, is connected with the upper flashboard blowout preventer through a flange, and is provided with a sensor for detecting the on-off state of the annular blowout preventer.

The balance valve in the pressurized working machine 500 is used for balancing the pressure in the four-way joint and the pressure in the well when the upper ram blowout preventer and the lower ram blowout preventer are closed, so that the pressure in the four-way joint is consistent with the pressure in the well, the balance valve is positioned at the left part of the balance four-way joint and is connected with a balance blowout manifold, and the balance valve is provided with a position sensor for detecting the switching state of the balance valve.

The blow-out valve in the pressurized working machine 500 is used for discharging the pressure in the four-way valve when the upper ram blowout preventer and the lower ram blowout preventer are closed, so that the pressure in the four-way valve is consistent with the external world of the wellhead 20, the pressure in the four-way valve is positioned at the right part of the balanced four-way valve, the blow-out valve is connected with a balanced blow-out manifold, and the blow-out valve is provided with a position sensor for detecting the opening and closing states of the blow-out valve.

The slips comprise a traveling bearing slip, a traveling pressing slip, a fixed bearing slip and a fixed pressing slip, wherein a traveling slip group is fixed on a lifting device of the pressurized working machine 500, the traveling bearing slip is used when the gravity of the pipe fitting 11 is larger than the uphole jacking force, the traveling pressing slip is used when the gravity of the pipe fitting 11 is smaller than the uphole jacking force, the traveling slip group is used for clamping the pipe fitting 11 and then ascends or descends along with the lifting device, the purpose of well logging or well logging of the pipe fitting 11 is achieved, and a position sensor is arranged for detecting the on-off state of the traveling slips.

The fixed slip set is used to clamp the mechanism for securing the tubular 11, using fixed load-bearing slips when the weight of the tubular 11 is greater than the uphole jacking force, and using fixed hold-down slips when the weight of the tubular 11 is less than the uphole jacking force. The fixed slip group clamps the pipe fitting 11, so that the pipe fitting 11 cannot move up and down, the fixed slip group is matched with the traveling slip group, the purpose of well logging or well logging of the whole pipe fitting 11 is achieved, the fixed slip group is fixed on the upper portion of the annular blowout preventer and is immovable, and a position sensor is arranged for detecting the on-off state of the fixed slip group.

The lifting device may include a plurality of lifting cylinders and is fixed to the body 510. The upper end of the lifting device is fixedly provided with a traveling slip group so as to drive the traveling slip group to lift and realize the purpose of well taking out or well taking in of the pipe fitting 11. Meanwhile, each lifting oil cylinder is provided with a position sensor so as to detect the displacement of the corresponding oil cylinder.

The coupling detector comprises an upper coupling detector and a lower coupling detector, wherein the upper coupling detector is positioned at the upper part of the traveling slip group, and when the coupling 12 reaches the drilling platform surface, the position of the coupling 12 can be accurately positioned by using the upper coupling detector; the lower collar detector is located at the upper part of the lower ram blowout preventer and is connected with the lower part of the balance four-way through a flange, and the lower collar detector is used for detecting the collar 12 of the pipe fitting 11 at the time of well.

As described above, the pipe fitting dismounting device includes each mechanism, and the mechanisms cooperate with each other, so that in order to prevent occurrence of unexpected factors such as misoperation or mechanism failure, actions of the mechanisms are mutually blocked, and in the embodiment of the application, the pipe fitting dismounting device is preset with an interlock protection mechanism. Specifically, the interlock protection mechanism includes:

1. the multiple sensors can be used for collecting the switching information of the slips, when the traveling slip group is opened, the fixed slip group is forbidden to be opened, and when the fixed slip group is opened, the traveling slip group is forbidden to be opened.

2. When the well is to be pulled out, the control mechanism 600 can convert the well-out length of the pipe fitting 11 by the information such as the position information of the lifting device and the slips, and when the well-out length of the pipe fitting 11 is greater than the height of the pipe lifting mechanism 200, the grip 220 of the pipe lifting mechanism 200 grips the oil pipe, otherwise, the pipe lifting mechanism 200 does not act.

3. The number of shackle rotations of the shackle tool 410 and the hydraulic oil pressure of the shackle tool 410 are detected by the sensor, and the torque of the shackle tool 410 is converted by the hydraulic oil pressure. And, when the shackle is in, if the actual torque is smaller than the shackle torque, when the number of shackle turns reaches the set number of turns, the shackle is considered to be successful; when the actual torque is larger than or equal to the buckling torque during buckling, if the number of buckling turns reaches the set number of turns, the buckling is considered to be successful; if not, the machine stops alarming, and the reason of the alarming is displayed on the operation screen of the control mechanism 600.

4. When the well outlet collecting pipe discharges liquid, the switch in-place state of the splash-proof box 450 can be obtained by utilizing the sensor. And, when the splash box 450 is closed in place, the winch is allowed to lift the pipe fitting 11 to collect the pipe liquid; when the splash box 450 is not closed in place, the winch is disabled from lifting the tubular 11.

5. Since the lifting device, the shackle mechanism 400, the righting mechanism 300 and the lifting pipe mechanism 200 overlap in the operation region, the control mechanism 600 needs to monitor the position information of the mechanisms in real time to prevent the mechanisms from collision in the operation overlapping region. For example: when the tripping mechanism 400 is at the wellhead 20 position, the lifting device is inhibited from lifting; when the lifting device lifts out of the well, the lifting and breaking out mechanism 400 is prohibited from approaching the well mouth 20, the righting mechanism 300 swings towards the well mouth 20, and the falling height of the pipe lifting mechanism 200 is limited; when the centralizer 300 is above the wellhead 20, lifting of the lifting device is inhibited, limiting the drop height of the riser mechanism 200.

In addition, these interlock protections are effective in both the automatic mode and the manual mode, and interlock contents are displayed on the operation screen when the interlock protections are started.

Based on the above disclosed pipe fitting dismounting device, the embodiment of the application further describes the specific installation and working conditions of the pipe fitting dismounting device as follows.

In the process of installing the pipe fitting dismounting device, the pipe fitting dismounting device is required to be fixed above the wellhead 20 by utilizing the derrick and the hydraulic support legs, and the hydraulic support legs can adjust the height of the derrick according to the height of the wellhead 20 tool string so as to adapt to the wellhead 20.

When the pipe fitting dismounting device is used, the pipe fitting dismounting device is firstly erected on the wellhead 20, the pipe fitting dismounting device is fixed by using the hydraulic support legs, the fixed support legs and the ropes, the pipe fitting dismounting device is connected with the wellhead 20 by using the flanges, the hydraulic and electric pipelines are connected, and the power catwalk 100, the power pipe bridge and the like in the pipe fitting dismounting device are arranged.

The control mode is divided into well outlet and well inlet according to different working conditions.

The well outlet flow path is as follows:

first, the pipe fitting disassembly apparatus is initialized. Specifically, the method comprises the steps of closing a traveling slip group, opening a fixed slip group, and returning a lifting device to a starting point. The screwing-on and unscrewing mechanism 400, the righting mechanism 300 and the power catwalk 100 are reset to the starting point, the pipe lifting mechanism 200 is in a posture of avoiding the well pipe fitting, and the winch lifts the pipe lifting mechanism 200 to the pipe grabbing height of the pipe lifting mechanism 200.

And then, the lifting device and the traveling slip group drive the pipe fitting 11 to lift, the traveling slip group is opened in cooperation with the fixed clamping group to fix the pipe fitting 11 at the current position.

Then the lifting device descends to the starting point, the traveling slip group is closed, the fixed slip group is opened, the lifting device drives the pipe fitting 11 to lift again, and meanwhile, the power catwalk 100 lifts to the corresponding position of the platform to prepare the pipe fitting 11.

In the low pressure mode, the above-described actions are cycled until the collar detector detects that the position of the collar 12 of the next tubular 11 is confirmed to be accurate, and the collar 12 of the next tubular 11 is stopped at the make-up height of the make-up mechanism 400.

Under the high pressure mode, after the coupling detector detects that the coupling 12 passes through the lower flashboard, the lifting device stops moving, so that the coupling 12 of the pipe fitting 11 is stopped in the balance four-way between the upper flashboard and the lower flashboard, the lower flashboard is closed, the blowout valve is opened, the balance four-way is emptied, the pressure in the four-way is balanced, and after the pressure is consistent with the external pressure, the blowout valve is closed, and the upper flashboard is opened. The lifting device drives the pipe fitting 11 to lift, after the coupling 12 of the pipe fitting 11 passes through the upper flashboard, the upper flashboard is closed, the balance valve is opened, so that the pressure in the balance four-way joint and the pressure in the well are balanced, the balance valve is closed, and the lower flashboard is opened. The lifting device and slip set cycle the above until the collar detector detects that the collar 12 of the next tubular 11 is correctly positioned and stops the collar 12 of the next tubular 11 at the stab-off height of the stab-off mechanism 400.

Then, the pipe lifting mechanism 200 rotates the gripper 220 to grip the pipe fitting 11, the pull-up and pull-off mechanism 400 moves to the wellhead 20 to perform the pull-off action, and the righting mechanism 300 is connected with the pipe fitting 11.

After that, after the shackle is completed in the shackle mechanism 400, the drain pipe is collected by using the splash proof box 450.

After the drainage is collected, the pull-up and pull-down mechanism 400 returns to the starting point, and the righting mechanism 300 pushes the pipe fitting 11 to support the pipe fitting 11 by the power catwalk 100.

Thereafter, the pipe lifting mechanism 200 descends, and the pipe 11 is placed in the V-groove 161 of the power catwalk 100.

Thereafter, the V-groove 161 of the catwalk 100 is lowered back to the ground, and the pipe 11 is turned over and unloaded onto the power pipe bridge, and the well is completed.

After the completion of the well-out operation of the above-described tubular 11, the pipe lifting mechanism 200 assumes a pipe-avoiding posture, and the pipe lifting mechanism 200 is moved upward to a pipe gripping position, ready to grip the next tubular 11.

The well entry procedure is as follows:

first, the pipe fitting disassembly apparatus is initialized. The main machine traveling slips or the fixed slips are closed, and the lifting device returns to the starting point. The shackle mechanism 400, the righting mechanism 300, and the power catwalk 100 are reset back to the starting point. The grip 220 of the pipe lifting mechanism 200 is turned over to a pipe gripping angle, and the winch drives the pipe lifting mechanism 200 to a position ready for gripping the pipe 11.

Thereafter, the catwalk 100 hooks the pipe 11 from the power bridge to the platform 530.

After that, the pipe lifting mechanism 200 is lifted upwards, and when the pipe lifting mechanism 200 senses that the pipe fitting 11 is closed, the grip 220 is closed, and the pipe lifting mechanism 200 carries the pipe fitting 11 to continue to lift upwards.

Thereafter, the centralizer 300 is extended, engages the tubular 11, and pushes the tubular 11 over the wellhead 20.

Then, the butt joint limiting piece is moved to the position of the wellhead 20, the butt joint limiting piece is closed, the pipe fitting 11 is assisted in alignment, and the axes of the two pipe fittings 11 are overlapped; at the same time, the catwalk 100 is lowered back to the ground in preparation for transporting the next tubular 11.

After the alignment is completed, the butt joint stopper is opened, and the tripping tool 410 is moved to the wellhead 20 and the tripping operation is performed.

Thereafter, the centering mechanism 300 is retracted back to the start of the operation, at which time the grippers 220 of the lifting mechanism 200 are opened to assume a tube-avoiding posture.

After that, the fixed slip group is closed, the traveling slip group is opened, the lifting device is lifted to a set position, after the lifting device is in place, the traveling slip group is closed, the fixed slip group is opened, and the lifting device descends to the starting point to send the pipe fitting 11 into the well.

And then, the fixed slip group is closed, the traveling slip group is opened, the lifting device is lifted, after the lifting device is lifted in place, the traveling slip group is closed, the fixed slip group is opened, and simultaneously, the power catwalk 100 is lifted to convey the other pipe fitting 11 to the platform 530, so as to prepare for logging in the well, and logging in the next pipe fitting 11 is performed.

In the low pressure mode, the above steps are circulated until the coupling detects that it detects the coupling 12, and the control mechanism 600 controls the lifting device according to the coupling detection result to stop the coupling 12 at the make-up height of the make-up tool 410.

In the high pressure mode, the collar 12 of the pipe 11 passes through the upper ram and then stops in the balanced four-way between the upper ram and the lower ram. The upper flashboard is closed, the balance valve is opened, when the pressure in the balance four-way valve and the pressure in the well reach balance, the lower flashboard is opened, the lifting mechanism drives the pipe fitting 11 to continue to move downwards and pass through the lower flashboard blowout preventer, the lower flashboard is closed, the blowout valve is opened, the balance four-way valve is emptied, and after the pressure in the balance four-way valve and the external pressure reach the same, the blowout valve is closed, and the upper flashboard is opened. The lifting device and slips are cycled until the collar detector detects a collar 12, and the control mechanism 600 controls the lifting device to stop the collar 12 at the make-up height of the make-up tool 410 according to the collar detection result, and continues to perform the well-logging action.

Then, the pipe lifting mechanism 200 descends to the pipe joint 11 position, and the pipe lifting mechanism 200 acts in a pipe joint posture and is ready to grasp the next pipe joint 11.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims (10)

1. A pipe fitting disassembly apparatus, comprising: a power catwalk, a pipe lifting mechanism, a righting mechanism, a screwing-on and unscrewing mechanism, a pressurized working machine and a control mechanism,

the power catwalk is arranged at one side of the pressurized working machine, is used for switching the pipe fitting between a flat state and an inclined state, and is used for receiving and sending the pipe fitting between the pipe lifting mechanism and the pipe fitting bearing mechanism;

the pipe lifting mechanism is used for receiving and conveying the pipe fitting between the power catwalk and the pressurized working machine and comprises a mounting frame, a gripper and a gripper driving piece, wherein the mounting frame is movably mounted on a mast of the pressurized working machine and is connected with a lifting driving piece of the pressurized working machine, the gripper is mounted on the mounting frame and is connected with the gripper driving piece, and the gripper driving piece is used for driving the gripper to open and close;

The centering mechanism comprises a base and a supporting piece, the base is mounted on the pressurized working machine, the supporting piece is used for supporting the pipe fitting, and the supporting piece is rotatably mounted on the base so as to enable the pipe fitting to be switched between a vertical state and an inclined state;

the make-up and break-out mechanism comprises a make-up and break-out tool which is used for making up and break-out the pipe fitting;

the pressurized working machine is used for disassembling or installing the pipe fitting in the shaft under the condition of not releasing pressure;

the control mechanism comprises a controller, the power catwalk, the pipe lifting mechanism, the righting mechanism, the screwing-on and unscrewing mechanism and the pressurized working machine are all connected with the controller, and the controller is used for controlling the working state of each device connected with the controller.

2. The pipe fitting disassembly apparatus of claim 1, wherein the control mechanism further comprises a plurality of sensors, the power catwalk, the pipe lifting mechanism, the righting mechanism, the screwing-on and unscrewing mechanism and the pressurized working machine are all provided with the sensors, each sensor is connected with the control mechanism, and each sensor is used for respectively transmitting the working state of a device connected with the sensor to the controller.

3. The pipe fitting removal apparatus of claim 1, wherein said pipe lifting mechanism further comprises a swing drive member through which said grip is rotatably mounted to said mounting bracket, said swing drive member being configured to drive axial rotation of said grip relative to said mast for switching between a working position and a storage position.

4. A pipe fitting disassembly apparatus as claimed in claim 3 wherein said pipe lifting mechanism further comprises a connecting rod and a flip drive, said gripper being rotatably mounted to one end of said connecting rod, the other end of said connecting rod being rotatably mounted to said mounting bracket, said swing drive being connected between said mounting bracket and said connecting rod, said flip drive being connected between said connecting rod and said gripper.

5. A pipe fitting disassembly apparatus as claimed in claim 3 wherein said pipe lifting mechanism further comprises a gripper seat and a guide, said gripper seat mounted to said mounting bracket, said gripper mounted to said gripper seat, said guide comprising a first guide bar and a second guide bar, said first guide bar and said second guide bar both secured to said gripper seat, and said first guide bar and said second guide bar forming a guide flare.

6. The pipe fitting removal apparatus of claim 1, wherein said righting mechanism further comprises a connecting arm rotatably mounted at one end to said base, said support member being connected to the other end of said connecting arm;

the support piece comprises a support roller, a first limiting piece and a second limiting piece, wherein the first limiting piece and the second limiting piece are respectively connected to the opposite ends of the support roller along the axial direction of the support roller, the first limiting piece and the second limiting piece form a flaring structure, and the direction of flaring is in the same direction as the support direction of the support roller.

7. The pipe fitting disassembly and assembly apparatus of claim 6, wherein the righting mechanism further comprises an anti-drop member rotatably mounted to an end of the connecting arm where the support member is located to clear or block flares of the first and second stop members.

8. The pipe fitting disassembly apparatus of claim 1, wherein the stabbing mechanism further comprises a support, a mount, and a docking drive, the support being mounted to the pressurized work machine, the mount being movably mounted to the support, the stabbing tool being mounted to the mount, the docking drive being coupled to the mount to drive the mount to switch between a working position and a stowed position.

9. The pipe fitting disassembly apparatus of claim 8, wherein the stabbing mechanism further comprises a splash box and a telescoping drive, the splash box comprising a first half and a second half, both of which are mounted to the mount via the telescoping drive, the telescoping drive being configured to drive the first half and the second half into or out of engagement, the splash box having a receiving cavity in communication with the pipe drainage collection apparatus with the first half and the second half in an engaged condition;

the screwing-off mechanism further comprises a butt joint limiting piece, the butt joint limiting piece comprises a third half part and a fourth half part, the third half part is fixed on the first half part, the fourth half part is fixed on the second half part, the butt joint limiting piece is provided with a guide flaring and a limiting cavity which are mutually communicated under the condition that the first half part and the second half part are in a butt joint state, the guide flaring is located above the limiting cavity, the guide flaring is arranged upwards, and the limiting cavity is used for enabling two axes of the pipe fittings to coincide.

10. The pipe fitting removal apparatus of claim 1, wherein the pipe fitting removal apparatus comprises a drive mechanism comprising an engine and a hydraulic mechanism, the hydraulic mechanism being coupled to the engine and the hydraulic mechanism being configured to drive the power catwalk, the pipe lifting mechanism, the centralizing mechanism, the stab-on mechanism, and the pressurized work machine.