Coiled tubing grabber and method of preparing coiled tubing

Abstract

The application discloses a kind of oil pipe grabbing mobile device and oil pipe preparation method, mainly related to oil pipe conveying field. Including the connection module extending in a straight line, the two ends of the connection module are respectively provided with end module, the end module includes the shell, the shell is close to the length direction one end and is equipped with grabbing mechanism, the grabbing mechanism includes the pickup claw rotationally connected with the shell at one end, the pickup claw is bent downward V-shaped structure, the bottom of the shell is rotatably mounted with multiple walking wheels along its length direction, multiple walking wheels are arranged side by side along the length direction of shell and the axial direction of walking wheel is perpendicular to the length direction of shell, the circumferential surface of the walking wheel is equipped with trapezoidal groove compatible with the surface of oil pipe, one or more walking wheels are driven based on motor. The beneficial effects of the application are that the oil pipe can be grabbed and transported by combining the arrangement of pipe row, the structure is simple, can be independently operated, and has strong adaptability to the scene.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of oil pipe conveying, in particular to an oil pipe grabbing and moving device and an oil pipe preparation method. BACKGROUND

[0002] Oil pipe is the core tool of well repair operation, whether it is to maintain, repair or transform oil well, it is necessary to accurately move the oil pipe from the storage position to the wellhead or other feeding position. Efficient oil pipe movement can significantly improve the operation efficiency and reduce the operation delay caused by the delay of oil pipe transportation.

[0003] It is not easy to move the oil pipe. First, the oil pipe is usually heavy and long, the moving track range is large, and the counterweight is difficult to balance. If manual transportation or manual assisted movement is adopted, there is a safety hazard of being hit or slipping by the oil pipe, and the labor intensity is high and the efficiency is low. If the equipment is moved, the existing methods include hoisting and lifting, and integrated feeding part in automatic catwalk.

[0004] The hoisting equipment is high in cost in use and operation, needs professional technicians, and has limited operation range, needs to arrange the hoisting equipment site in the operation site in advance, also needs to consider the space for oil well operation, is high in technical difficulty in operation, has poor precision in moving one by one, and is low in efficiency. The automatic integrated feeding equipment such as catwalk has very complex structure, is high in requirement for site, is high in cost of self-transportation, installation and maintenance, is time-consuming and laborious in preparation, needs the oil pipe to be arranged in a state matched with it, and is high in use limitation because of highly integrated function, can only complete the established moving steps and must cooperate with the complete feeding process.

[0005] Therefore, at present, there is no good operation method for how to flexibly and effectively move the oil pipe on the ground, which is not ideal in safety, operation efficiency, operation precision and cost. SUMMARY

[0006] The present application aims to provide an oil pipe grabbing and moving device and an oil pipe preparation method, which can grab and convey the oil pipe in combination with the arrangement of the pipe row, has simple structure, can independently operate, and is high in adaptability to the site.

[0007] The present application realizes the above-mentioned purpose through the following technical scheme:

[0008] The utility model provides an oil pipe grabbing mobile device, including the connection module of linear extension, both ends of connection module are equipped with end module respectively, end module includes the casing, the casing is equipped with the grabbing mechanism near one end of its length direction, the grabbing mechanism includes the pickup claw of one end rotation connection with the casing, the pickup claw is the V-shaped structure of bending downward, the bottom of casing rotatable installs a plurality of walking wheels along its length direction, a plurality of walking wheels are arranged in parallel along the length direction of casing and the axial direction of walking wheel is perpendicular to the length direction of casing, the circumferential surface of walking wheel is equipped with the trapezoidal groove of being suitable for the surface of oil pipe, and one or more walking wheels are driven based on motor.

[0009] The bottom of the casing is provided with an open structure, and the bottom side of the front and rear end faces of the casing is provided with an arc-shaped notch in the middle, and the shaft is rotatably installed on the casing through the bearing near the edge position of the front and rear two ends, the walking wheel is installed on the shaft, the transmission gear is arranged on one shaft, the driving gear is rotatably installed in the casing, the stepping motor is arranged in the casing, the output shaft of the stepping motor is connected with the driving gear, and the driving gear is in transmission connection with the transmission gear.

[0010] The end face of the casing away from the grabbing mechanism is the rear end face, the vertical column is fixed on the rear end face, the cross beam is fixed on the bottom end of the vertical column, the light pole is arranged on the both sides of the cross beam and is symmetrically arranged with the vertical column, the light pole extends vertically and the auxiliary wheel is installed on the bottom end, the auxiliary wheel is a tapered wheel with narrow upper part and wide lower part, and the circumferential surface of the auxiliary wheel is in contact with the bottom circumferential surface of the oil pipe walked on.

[0011] The mounting seat is fixed on the rear end face, the lifting hole is penetrated through the mounting seat upwards and downwards, the vertical column penetrates through the lifting hole and can be locked and limited relative to the mounting seat, the middle part of the cross beam is fixed with the bottom end of the vertical column, the top end of the light pole is provided with the sleeve, and the sleeve is sleeved on the cross beam and can be locked and limited relative to the cross beam.

[0012] The pickup claw includes a first rod and a second rod which are integrally formed, one end of the first rod is connected with one end of the second rod at an obtuse angle, and one end of the first rod away from the second rod is arranged close to the casing and is hingedly connected with the casing.

[0013] The grabbing mechanism further comprises a hinged frame, a connecting rod and a swing rod.

[0014] The middle part of the pickup claw is fixed with an upward protruding hinge position, the swing rods are two and symmetrically hinged on the two sides of the shell, the front end of the connecting rod is hinged with the hinge position, the rear end of the connecting rod is hinged with one end of the swing rod, the hinge frame comprises a connecting rod, the middle part of the connecting rod is fixed with a pull rod perpendicular thereto, the connecting rod is transversely arranged relative to the shell, and the two ends of the connecting rod are respectively rotatably connected at the hinge positions of the connecting rod and the swing rod, and the shell is also provided with a cylinder body, the front end of the cylinder body is telescopically matched with a cylinder rod, the front end of the cylinder rod is hinged with the rear end of the pull rod, and the shell is provided with a gap corresponding to the positions of the cylinder body and the cylinder rod.

[0015] The opposite inner side end faces of the two shells are provided with hinge seats, the connecting module comprises a hollow beam which is linearly extended and has a hollow structure, the two ends of the hollow beam are respectively provided with sliding sleeves which are extended in the same direction, the sliding sleeves are slidably matched with telescopic rods, and the outer ends of the telescopic rods are axially and vertically hinged with the hinge seats.

[0016] The sliding sleeve is a circular tube type and has a circular sliding cavity, the telescopic rod is cylindrical, the telescopic rod is slidably matched with the circular sliding cavity in the axial direction and can be freely rotated in the circumferential direction, the inner end of the telescopic rod is provided with a baffle, the baffle is larger than the cross section of the circular sliding cavity, and gaps are formed between the top side of the baffle and the top wall of the hollow beam and between the two sides of the baffle and the inner walls of the hollow beam.

[0017] The hollow beam is internally provided with a battery.

[0018] An oil pipe preparation method comprises the following steps:

[0019] Pipe row preparation: the oil pipes are arranged in multiple layers on one side of the workover rig and laid flat, 3-4 oil pipes are placed as spacers between each layer of pipe rows, and the oil pipes used as spacers are vertically placed relative to the oil pipes in the pipe rows;

[0020] Oil pipe conveying: the end modules of the oil pipe grabbing and moving device are respectively straddled on the two oil pipes used as spacers exposed on the uppermost layer, and the grabbing mechanism is arranged away from the workover rig, the oil pipes are grabbed and conveyed to one side of the workover rig layer by layer through the oil pipe grabbing and moving device.

[0021] Compared with the prior art, the beneficial effects of the present application are as follows:

[0022] The device can straddle the oil pipes and move, has low requirements for the neatness of the oil pipe rows, and can normally work even if the pipe rows are not neat, thereby solving the adaptability problem in complex environments. Through the straddling design, stable walking and simple guiding are realized, walking constraints can be quickly obtained on the site, directional walking and carrying effects are obtained with a simple and lightweight structure, operation and maintenance are facilitated, manual assistance is maximally reduced, and independent operation is realized, thereby improving the operation strength and efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic diagram of the use state of the present application.

[0024] Figure 2 is a schematic diagram of the use state of the present application.

[0025] Figure 3 is a schematic diagram of the present application cooperating with the oil pipe.

[0026] Figure 4 is a schematic diagram of the assembly of the end module of the present application.

[0027] Figure 5 is a schematic diagram of the inside view of the end module of the present application.

[0028] Figure 6 is a schematic diagram of the bottom structure of the end module of the present application.

[0029] Figure 7 is a schematic diagram of the internal structure of the connecting part of the end module and the connecting module of the present application.

[0030] Figure 8 is a schematic diagram of the rear end face of the end module of the present application.

[0031] Figure 9 is a schematic diagram of the outside view of the end module of the present application.

[0032] Reference signs shown in the drawings:

[0033] 1, housing; 2, arc-shaped notch; 3, rotating shaft; 4, walking wheel; 5, transmission gear; 6, driving gear; 7, mounting seat; 8, lifting hole; 9, stand column; 10, cross beam; 11, seat sleeve; 12, polished rod; 13, auxiliary wheel; 14, screw hole; 15, pin hole; 16, positioning hole; 17, cylinder body; 18, cylinder rod; 19, let-out port; 20, picking claw; 21, hinged position; 22, swing rod; 23, connecting rod; 24, connecting rod; 25, pull rod; 26, hinged seat; 27, hollow beam; 28, sliding sleeve; 29, telescopic rod; 30, baffle. DETAILED DESCRIPTION

[0034] The application will be further described below in connection with specific embodiments. It should be understood that these embodiments are only used to illustrate the application and not to limit the scope of the application. Furthermore, it should be understood that after reading the content of the present application, those skilled in the art can make various modifications or changes to the present application, and these equivalent forms also fall within the scope defined by the present application.

[0035] Example 1:

[0036] The device is a near-ground self-walking device, which is highly adaptable to the production situation of oil well site and efficiently operates the oil pipe grabbing and moving through new design.

[0037] The single length of the oil pipe is usually 9-12 meters, so in the operation in the well repair site, a large number of oil pipes are often stacked side by side in the site in the form of pipe rows, including single-layer paving and multi-layer paving, and the stacking height of the multi-layer paving is usually 3-5 layers, mainly for saving space. This is the conventional operation of the oil pipe in the operation site. Based on this situation, when moving the oil pipe, the common scene of multi-layer paving needs to be considered, and the space occupied by the oil pipe paving must not be small, so the walking of the equipment and the carrying of the oil pipe are challenges.

[0038] The device fully utilizes the characteristics of the oil pipe row and moves in combination with the characteristics of the oil pipe to complete the movement. The main structure includes a connecting module, and the two ends of the connecting module are respectively provided with an end module.

[0039] (I) End module

[0040] The end module includes a machine shell 1, which is used to provide a mounting position for the assembly and protect the internal transmission assembly.

[0041] The bottom of the machine shell 1 is provided with an open structure to facilitate the cooperation with the oil pipe astride below, the two ends of the machine shell 1 along the length direction are defined as front and rear end faces, and the bottom side of the front and rear end faces of the machine shell 1 is provided with an arc-shaped notch 2 in the middle to facilitate the accommodation of the oil pipe.

[0042] The machine shell 1 is rotatably installed with a rotating shaft 3 near the edge positions of the front and rear ends through a bearing piece, two walking wheels 4 are installed in the machine shell 1 and are respectively installed on the two rotating shafts 3, the walking wheels 4 are provided with trapezoidal grooves along the circumferential direction, the trapezoidal grooves are equilateral trapezoidal cross-section circumferential grooves, and the two side inclined groove walls of the trapezoidal grooves are respectively used to contact the circumferential surface of the oil pipe to realize stable astride walking, a transmission gear 5 located in the machine shell 1 is further fixed on one rotating shaft 3 through a key connection, a driving gear 6 is further rotatably installed in the machine shell 1, the driving gear 6 and the transmission gear 5 are in transmission connection, and the specific connection mode can be realized through a chain, a toothed belt or gear meshing. Through chain transmission, the chain is wound on the driving gear 6 and the transmission gear 5 in a back type, a stepping motor is arranged in the machine shell 1, the output shaft of the stepping motor is in transmission connection with the gear shaft of the driving gear 6 through a speed reducer, the rotation of the driving gear 6 is driven, and the walking of the end module is driven.

[0043] The transmission gear 5 is preferably installed on the rotating shaft 3 near the front end face, and the driving effect is better.

[0044] The mounting seat 7 is provided on the rear end surface of the casing 1, and can be fixed by a fixing member such as a bolt, or can be fixed by welding. The mounting seat 7 has a T-shaped structure, has a larger contact with the rear end surface, and is fixed reliably. A lifting hole 8 is vertically and penetratingly provided on the mounting seat 7. A stand column 9 is slidingly provided in the lifting hole 8. A horizontal beam 10 is fixed to the bottom end of the stand column 9. The central part of the horizontal beam 10 is fixed to the bottom end of the stand column 9, so that the stand column 9 and the horizontal beam 10 form a "⊥" shaped structure. A seat sleeve 11 capable of sliding relative to the horizontal beam 10 to adjust the position is sleeved on the horizontal beam 10. A light pole 12 vertically and downwardly extending is fixed to the bottom surface of the seat sleeve 11. Auxiliary wheels 13 are provided on the bottom end of the light pole 12. The auxiliary wheels 13 are rotatably connected to the bottom end of the light pole 12. The auxiliary wheels 13 are tapered wheels with a narrow upper part and a wide lower part. The auxiliary wheels 13 are symmetrically provided relative to the stand column 9. The inclined peripheral surface of the auxiliary wheels 13 is used to contact the peripheral surface of the bottom part of the oil pipe walked on, to clamp and follow the oil pipe to move, and to rotate synchronously, so as to achieve auxiliary guiding at the tail part, and to play an important role in preventing the oil pipe from falling over when the front end gripper holds up the oil pipe.

[0045] In the mounting mode, a convenient and adjustable structure is adopted. A screw hole 14 is provided on the top surface of the seat sleeve 11. A positioning screw is threadedly connected in the screw hole 14. The bottom end of the positioning screw is used to abut against the upper surface of the horizontal beam 10, so as to adjust and fix the distance between the two auxiliary wheels 13. Pin holes 15 are equidistantly provided on the stand column 9 along the height direction. A positioning hole 16 is transversely provided on the mounting seat 7 and is communicated with the lifting hole 8. The inner wall of the positioning hole 16 can be smooth or can be provided with internal threads. A pin member is movably inserted or threadedly connected in the positioning hole 16. The pin member is a screw structure or a pin structure. The pin member is movably inserted in the pin hole 15, so as to determine the relative height of the stand column 9, and to adjust the height of the two auxiliary wheels 13. The above structure can be conveniently adjusted and disassembled, and the parts can be conveniently replaced.

[0046] Through the structure of the above end module in the walking aspect, the end module can walk along the oil pipe. Two oil pipes (two groups of end modules) are used as auxiliary parts, so as to conveniently constrain and guide the walking of the end module. Therefore, in the field, two oil pipes can be simply placed on the pipe row to achieve rapid constraint and guidance. The walking structure does not need complex identification and structure, has strong adaptability to the field, and can be controlled to be very low in cost.

[0047] A cylinder body 17 is provided in the casing 1 close to the rear end surface. The cylinder body 17 can be a pneumatic cylinder, an oil cylinder or an electric cylinder.

[0048] A cylinder rod 18 is telescopically fitted to the front end of the cylinder body 17.

[0049] The cylinder 17 is installed above the traveling wheel 4, the casing 1 is provided with a clearance 19 corresponding to the position of the cylinder 17 and the cylinder rod 18, facilitating the cylinder rod 18 to pass through the clearance 19 and extend outside the casing 1.

[0050] The front end (the end away from the auxiliary wheel 13) of the casing 1 is provided with a grabbing mechanism, which comprises a hinged frame, a connecting rod 23, a swing rod 22 and a pickup claw 20.

[0051] The front end face of the casing 1 adopts a wedge-shaped structure, facilitating the swing action of the above components.

[0052] The pickup claw 20 is symmetrically arranged on both sides of the front end of the casing 1 away from the mounting seat 7, and the pickup claw 20 comprises a first rod and a second rod integrally formed based on its shape, the front end of the first rod is connected at an obtuse angle with the rear end of the second rod, thereby obtaining a V-shaped lifting structure with an upward opening. Through the swing of the pickup claw 20, the oil pipe can be picked up downward and lifted upward.

[0053] The rear end of the first rod can be rotatably connected to the front end of the rotating shaft 3, and the integrated mounting saves components.

[0054] The swing rod 22 is two and is symmetrically hinged on both sides of the casing, and the swing rod 22 is an arc-shaped rod and one end thereof is rotatably mounted on both sides of the casing 1 behind the pickup claw 20.

[0055] The middle part of the first rod is provided with an upward extending hinged position 21, the front end of the connecting rod 23 is hinged with the hinged position 21, and the rear end of the connecting rod 23 is hinged with one end of the swing rod 22, thereby realizing the linkage and cooperation of the swing rod 22 and the pickup claw 20.

[0056] The hinged frame comprises a connecting rod 24, both ends of the connecting rod 24 are respectively provided with a hinged shaft, the rear end of the connecting rod 23 is hinged on the hinged shaft, and the terminal end of the swing rod 22 is also hinged on the hinged shaft, thereby realizing the constraint of the hinged positions of the connecting rod 23 and the swing rod 22 at both ends of the connecting rod 24, the middle part of the connecting rod 24 is fixed with a pull rod 25, the rear end of the pull rod 25 is hinged with the front end of the cylinder rod 18, thereby realizing the driving control of the whole grabbing mechanism.

[0057] Through the above structure, when the cylinder rod 18 extends, the hinged frame is pushed forward, under the constraint of the swing rod 22 and the transmission linkage of the connecting rod 23, the pickup claw 20 falls below the oil pipe, when the cylinder rod 18 retracts, the hinged frame is pulled back, and the pickup claw 20 is pulled upward, thereby lifting the oil pipe horizontally, and completing the action of carrying the oil pipe.

[0058] Through two end modules, the oil pipe can be lifted in two positions away from each other, and the structure characteristics of the long oil pipe are dealt with, the lifting is stable, and the subsequent oil pipe transfer position is convenient.

[0059] In order to facilitate connection with the connecting module, a hinge seat 26 is arranged on the inner side end face opposite to the two shells 1.

[0060] (II) Connecting module

[0061] The hollow beam 27 includes a linear extension and a hollow structure, in this example, the hollow beam 27 is a hollow structure with a rectangular cross section, which is convenient for processing and convenient for adding reinforcing ribs.

[0062] The inside of the hollow beam 27 can be mounted with a battery based on the hollow position, for providing energy for the power structure at both ends.

[0063] The two ends of the hollow beam 27 are respectively provided with a sliding sleeve 28, the sliding sleeve 28 is a circular sleeve and is fixed in the hollow beam 27, in order to improve the supporting strength, a connecting rib is arranged between the peripheral surface of the sliding sleeve 28 and the inner wall of the two ends of the hollow beam 27, for fixing the sliding sleeve 28 while increasing the strength.

[0064] The sliding sleeve 28 is slidably connected with a telescopic rod 29, the telescopic rod 29 and the sliding sleeve 28 cooperate to realize the telescopic adjustment capability relative to the two ends of the hollow beam 27.

[0065] The inner end of the telescopic rod 29 is provided with a baffle 30, the baffle 30 is larger than the inner diameter of the sliding sleeve 28, so as to limit the inner end of the telescopic rod 29.

[0066] The telescopic rod 29 is a circular rod, and the sliding sleeve 28 also has a circular sliding cavity, so that when the telescopic rod 29 slides along the sliding sleeve 28 in the axial direction, it can also rotate by a certain angle in the circumferential direction, but in order to prevent excessive rotation, the baffle 30 is a rectangular plate, and the upper side of the baffle 30 is close to the inner wall of the hollow beam 27, a gap a is arranged between the top side of the baffle 30 and the top wall of the hollow beam 27, and a gap b is arranged between the two sides of the baffle 30 and the inner wall of the hollow beam 27, when the relative rotation of the telescopic rod 29 and the hollow beam 27 exceeds a certain angle, the top side of the baffle 30 will touch the inner wall of the hollow beam 27, the limiting angle is one-way not more than 20 degrees, which ensures that the telescopic rod 29 rotates within a reasonable range, avoiding unstable factors caused by excessive rotation. The structure enables the end module at both ends to have the ability of self-adjusting up and down swing.

[0067] The outer end of the telescopic rod 29 is hingedly connected with the hinge seat 26 of the end module in the vertical direction, so that the end module has the ability of independent front and back swing self-adjusting in the horizontal direction.

[0068] Based on the structural features of the end module and the connecting module at the connecting part, the end module is connected through the connecting module to form a complete device structure, and the end modules at both ends have independent self-adjusting capabilities, and their self-adaptive walking capabilities are reflected in the specific walking process as follows:

[0069] In application, only need to place two oil pipes on the ground or pipe row, and then cross the end module on the two oil pipes to guide the device to walk in a straight line.

[0070] In the walking process, the two end modules have up-down swing adjustment functions, can adaptively adjust according to the ups and downs and unevenness of the oil pipes or the ground, have front-back swing adjustment functions and telescopic functions, and can adapt to the skew of the oil pipe placement, and do not need to be placed with precision to realize self-adaptation along the oil pipe direction.

[0071] In specific application, the following method is used for the material transportation of the oil pipes:

[0072] After the pipe row trailer is unloaded, multiple layers of pipe rows are laid on the side of the workover truck in a layer-by-layer manner, the number of layers is 3-5, and the arrangement of each layer of pipe row is in the same direction as the front-back direction of the workover truck, the adjacent layers of pipe rows are separated by 3-4 oil pipes, and the oil pipes used for cushioning and isolation between the pipe rows are arranged vertically to the pipe row oil pipes.

[0073] After the laying is completed, the device is used to transport the pipe rows layer by layer during the material transportation of the pipe rows, the end module of the device is crossed on the support oil pipes used for separation between the top layer and the second layer, the device is started to automatically walk, the pickup claw of the device is away from the workover truck, the oil pipes away from the workover truck are picked up and transported to the side of the workover truck, and the workover truck can directly take the materials.

[0074] After each layer of pipe row is transported, the oil pipes used for separation are moved to one side of the lower layer of pipe row and arranged in the same direction as the oil pipes of the lower layer of pipe row, and the device is moved to the oil pipes between the lower layers. The specific moving method can be manual moving or using any oil pipe moving method commonly used in the work site.

[0075] Not limited to this example, the separated oil pipes can be directly moved away so as not to affect the transportation of each layer of pipe row.

[0076] Since the pipe rows are placed on the pipe bridge in the field, the transportation of the lowermost layer of oil pipe row can be combined with the pipe bridge. That is, the device is placed on two bridge frames with appropriate width, and the walking is realized through cooperation with the pipe bridge.

Claims

1. A tubing grabbing and moving device, characterized in that: The cam is connected to the chassis and has a plurality of movable members connected thereto for movement, the movable members being connected to the chassis at the bottom and the movable members being connected to the chassis at the bottom. The top end of the polished rod is provided with a seat, and the seat is provided with a seat sleeve, and the seat sleeve is fixed with a toothed box on the top end of the polished rod, and the toothed box is sleeved with a toothed box on the bottom end of the polished rod.

2. The oil pipe grabbing and moving device according to claim 1, characterized in that: The picking claw includes an integrally formed first rod and a second rod, one end of the first rod is connected to one end of the second rod at an obtuse angle, and one end of the first rod away from the second rod is arranged close to the housing and hingedly connected to the housing.

3. The oil pipe grabbing and moving device according to claim 1, characterized in that: The picking mechanism also includes an articulated frame, a connecting rod, and a swing rod; The middle part of the picking claw is fixed with an upwardly protruding hinge position, there are two swing rods, which are symmetrically hinged on both sides of the shell, the front end of the connecting rod is hinged to the hinge position, and the rear end of the connecting rod is hinged to one end of the swing rod. The hinge frame includes a connecting rod, and the middle part of the connecting rod is fixed with a pull rod perpendicular to it. The connecting rod is arranged horizontally relative to the casing, and the two ends of the connecting rod are rotatably connected to the hinge of the connecting rod and the swing rod. A cylinder body is also provided in the casing, and the front end of the cylinder body is telescopically matched with a cylinder rod, and the front end of the cylinder rod is hingedly connected to the rear end of the pull rod. The casing is provided with a makeshift opening at the position corresponding to the cylinder body and the cylinder rod.

4. The oil pipe grabbing and moving device according to claim 1, characterized in that: An articulated seat is provided on the inner end faces of the two casings that are opposite to each other. The connecting module includes a hollow beam that extends in a straight line and has a hollow structure. Both ends of the hollow beam are respectively provided with sliding sleeves extending in the same direction as the hollow beam. A telescopic rod is slidably fitted in the sliding sleeve, and the outer end of the telescopic rod is hingedly connected to the articulated seat with the axial direction being vertical.

5. The oil pipe grabbing and moving device according to claim 1, characterized in that: The sliding sleeve is a circular tube and has a circular sliding cavity. The telescopic rod is cylindrical. The telescopic rod and the circular sliding cavity slide together in the axial direction and can rotate freely in the circumferential direction. The inner end of the telescopic rod is provided with a baffle. The baffle is larger than the cross-section of the circular sliding cavity. A gap is provided between the top side of the baffle and the top wall of the hollow beam, and a gap is provided between the two sides of the baffle and the inner wall of the hollow beam.

6. The oil pipe grabbing and moving device according to claim 1, characterized in that: Batteries are installed in the hollow beam.

7. A method for preparing oil pipes, characterized in that: The oil pipe grabbing and moving device according to any one of claims 1 to 6 is used, and includes the following steps: Pipeline preparation: Lay the oil pipes along one side of the workover vehicle and arrange them in multiple layers of pipe lines. Place 6-10 pipes between each layer of pipe lines. The pipes used for spacing should be placed vertically with the pipes in the pipe lines. Oil pipe transportation: The end modules of the oil pipe grabbing mobile device are placed astride the two oil pipes exposed on the top layer for spacing, and the grabbing mechanism is set away from the direction of the workover vehicle. The oil pipe grabbing mobile device grabs the oil pipe layer by layer and transports it to the side of the workover vehicle.

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