Power catwalk

Abstract

A power catwalk relates to the technical field of oil field tripping tubular column equipment and comprises a base, a base wheel capable of rotating relative to the base is arranged on the base, a base plate is arranged on the base wheel, the base plate close to one end of a wellhead is hinged to the base wheel, a supporting plate perpendicular to the base plate is mounted on the base plate, and a tripped oil tube is placed on the side face of the supporting plate. Electric clamps used for clamping an oil pipe are arranged above and below the supporting plate respectively, one end of the base wheel is fixedly connected with a gear A, a gear B meshed with the gear A is arranged on the base below the base wheel, a wheel shaft of the gear B is connected with a driving device, the driving device can drive the gear B to rotate, and a rib plate is arranged on the side face of the supporting plate. An electric telescopic rod A is arranged between the rib plate and the base wheel, and the base plate and the supporting plate are driven to incline towards the well mouth through the stretching-out action of the electric telescopic rod A. The mode of ascending and descending the oil pipe is changed, so that the structure of the power catwalk is simplified, the length and the size of the power catwalk are reduced, and transportation and position adjustment are more convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of oilfield pipe string lifting and lowering equipment, and in particular relates to a power catwalk. Background Art

[0002] The power catwalk is an automated device used to transport oil pipes between the ground and the drilling floor. The current mainstream catwalks are equipped with a base and a ramp (for example: Application Publication No. CN119434868 A, a catwalk mechanism and an automatic drilling tool system with it). The length of the base is basically equal to the length of the oil pipe (8-10 meters). This type of base is characterized by being long and bulky. When transporting, it not only requires a longer transport vehicle, but also a crane for lifting. Since the power catwalk needs to be coordinated with the wellhead height, after arriving at the well site, if the power catwalk is not placed in the appropriate position, it needs to be moved again, and the bulky and large base is very inconvenient to move, which brings many inconveniences to the operation.

[0003] When lifting and lowering the oil pipe, the ramp needs to be raised and lowered frequently. When raising the ramp, the ramp is sent to the height of the wellhead platform to facilitate the transfer of the oil pipe between the wellhead platform and the ramp; when lowering the ramp, the ramp is lowered to a height that is convenient for the oil pipe row gripper to grab. The lifting of the ramp requires many related mechanical parts and is costly; and the frequent lifting of the ramp requires more work, wasting mechanical energy. Summary of the invention

[0004] In order to solve the problem that the current power catwalk is bulky and inconvenient to transport and adjust its position, the present invention provides a power catwalk with a brand-new structure. The present invention innovatively makes comprehensive improvements to the power catwalk and directly changes the way of raising and lowering the oil pipes. The base length of the power catwalk of the present invention does not have to be equivalent to the length of the oil pipes, and the base length can be completely controlled at about 1.5 meters. Such a base is convenient for both transportation and position adjustment.

[0005] The technical solution provided by the present invention is: a power catwalk, including a base, a base wheel which can rotate relative to the base is arranged on the base, the base wheel is arranged horizontally, a base plate is arranged on the base wheel, the base plate near one end of the wellhead is hinged with the base wheel, a support plate which is vertical to the base plate is installed on the base plate, the oil pipe to be pulled out is placed on the side of the support plate, and electric clamps for clamping the oil pipe are arranged above and below the support plate respectively, for the convenience of distinction, they are respectively called upper clamps and lower clamps, and the oil pipe is clamped by the two electric clamps to keep the oil pipe in a stable vertical state; one end of the base wheel is fixedly connected to a gear A, a gear B meshing with the gear A is arranged on the base below the base wheel, and the wheel shaft of the gear B is connected to a A driving device is provided, which can drive gear B to rotate, thereby realizing the rotation of the base wheel through the transmission between the gears. The rotation of the base wheel drives the base plate and all the components above the base plate including the oil pipe to rotate, so that the vertical oil pipe is laid down horizontally and placed on the oil pipe row. The upper clamp and the lower clamp release the clamping of the oil pipe, and the oil pipe is separated from the support plate. A rib plate for increasing the stability of the support plate is provided on the side of the support plate, and an electric telescopic rod A is provided between the rib plate and the base wheel. The extension action of the electric telescopic rod A drives the base plate and various components installed above the base plate to tilt toward the wellhead. Tilting toward the wellhead can make it closer to the wellhead, which can facilitate the cooperation with the oil pipe elevator.

[0006] A further technical solution is: a positioning rod protruding from the base plate is installed on the base plate, an electric telescopic rod B is arranged at the lower end of the support plate, and the telescopic end of the electric telescopic rod B is fixedly connected to the lower clamp.

[0007] When the tubing elevator lowers the tubing, the lower end of the tubing can be quickly inserted into the positioning rod, improving the accurate positioning speed of the lower end of the tubing. After the tubing reaches the tubing row, the tubing needs to be separated from the positioning rod. The separation process is to drive the lower clamp to clamp the tubing and pull it out of the positioning rod through the contraction of the electric telescopic rod B, thereby realizing the separation of the tubing and the positioning rod, so that the tubing can be freely placed on the tubing row.

[0008] A further technical solution is: a positioning slot recessed in the base plate is installed on the base plate, an electric telescopic rod B is arranged at the lower end of the support plate, and the telescopic end of the electric telescopic rod B is fixedly connected to the lower clamp.

[0009] When the tubing elevator lowers the tubing, the lower end of the tubing can be quickly inserted into the positioning slot, thereby improving the accurate positioning speed of the lower end of the tubing.

[0010] A further technical solution is: the middle section of the support plate is provided with a groove, and the existence of the groove allows a gap to exist between the middle section of the support plate and the oil pipe after the oil pipe is clamped by the upper clamp and the lower clamp. The gap provides space for the installation of the oil pipe elevator, which facilitates the oil pipe elevator to clamp the oil pipe in a relaxed state and slide along the oil pipe. When the oil pipe elevator slides to the upper end of the oil pipe, the oil pipe elevator clamps the oil pipe, and the lower clamp is released at this time, so that the oil pipe elevator can continue to lift the oil pipe.

[0011] A further technical solution is that the length of the support plate is greater than 1 / 2 of the length of the oil pipe and less than 3 / 4 of the length of the oil pipe.

[0012] A further technical solution is that the support plate is formed by splicing at least two sections.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. Compared with the current mainstream catwalks, which have very long bases (approximately the same length as the oil pipe) and are very bulky, the base of this application is very short (about 1.5 meters), so there is no special requirement for the length of the haulage vehicle. Due to its small size and light weight, it is also very convenient to adjust the position relative to the wellhead.

[0014] 2. In the process of lifting and lowering the oil pipe, the present application does not require the oil pipe to be moved up and down in the V-shaped groove of the ramp, so the present application avoids the cumbersome operation steps of frequently raising and lowering the ramp. Since the lifting action of the ramp is not required, the corresponding components are naturally not required as support, so the present application is simpler in structure and lower in cost.

[0015] 3. When the oil pipe is lowered from the wellhead, the oil pipe elevator does not need to spend time and effort to slowly and completely slide the oil pipe into the V-groove. The oil pipe elevator only needs to wait for the upper clamp and the lower clamp to clamp the oil pipe before releasing the oil pipe to carry out the next work. Therefore, the present application can improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the present invention when waiting to receive the oil pipe during the oil pipe lifting process.

[0017] Figure 2 It is a structural schematic diagram of the present invention when receiving the oil pipe during the oil pipe lifting process.

[0018] Figure 3 It is a structural schematic diagram of the present invention returning to the correct position after receiving the oil pipe during the oil pipe lifting process.

[0019] Figure 4 The present invention is a structural schematic diagram of the oil pipe being erected and the oil pipe elevator being clamped on the oil pipe during the oil pipe lowering process.

[0020] Figure 5It is a structural schematic diagram of the upper clamp opening when the tubing elevator reaches the upper clamp during the tubing lowering process.

[0021] Figure 6 yes Figure 1 A partial enlarged view of point I in the middle.

[0022] Figure 7 It is a structural schematic diagram of the butt plate and the rib plate in the present invention.

[0023] Figure 8 It is a top view showing the placement position relationship of the main body, the wellhead platform and the oil pipe array of the present invention.

[0024] Fig. 9 It is a top view of the main part of the present invention.

[0025] In the figure: 1. oil pipe; 2. oil pipe hanging card; 3. upper fixture; 4. support plate; 5. groove; 6. rib plate; 7. electric telescopic rod B; 8. positioning rod; 9. lower fixture; 10. base plate; 11. thrust bearing; 12. base; 13. gear A; 14. gear B; 15. driving device; 16. base wheel; 17. electric telescopic rod A; 18. oil pipe row. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] Embodiment 1: This embodiment includes a base 12, such as Figure 1 and Figure 8 As shown, the base 12 is located on one side of the wellhead platform. Different from the prior art, in this embodiment, the length direction of the base 12 is perpendicular to the length direction of the oil pipe 1 on the pipe row. When the oil pipe 1 is pulled out, the oil pipe 1 is directly prevented from falling on the oil pipe row 18 from a vertical state, and there is no step for the oil pipe 1 to slide in the sloped V-shaped groove on the base 12. Therefore, the base 12 does not need to be like the existing power catwalk (the length is equivalent to the length of the oil pipe 1). In this embodiment, the length of the base 12 is about 1.5 meters, which is significantly shorter than the existing power catwalk, so the requirements for the hauling vehicle are greatly reduced.

[0028] A base wheel 16 is arranged on the base 12 and can rotate relative to the base 12. Thrust bearings 11 are arranged between the two ends of the base wheel 16 and the base 12 respectively. The base wheel 16 is arranged horizontally. A base plate 10 is arranged on the base wheel 16. The base plate 10 near the wellhead is hinged to the base wheel 16, and the base plate 10 away from the wellhead is in a free state. A support plate 4 is installed on the base plate 10 in a vertical state with respect to the base plate 10, such as Figure 2As shown, the pulled-out oil pipe 1 is placed on the side of the support plate 4, and electric clamps for clamping the oil pipe 1 are respectively arranged above and below the support plate 4, which are respectively called upper clamps and lower clamps for easy distinction. Two rib plates 6 for increasing the stability of the support plate 4 are arranged on the side of the support plate 4, and an electric telescopic rod A17 is arranged between the rib plates 6 and the base wheel 16. The extension action of the electric telescopic rod A17 drives the base plate 10 and various components installed above the base plate 10 to tilt toward the wellhead. Tilting toward the wellhead can make it closer to the wellhead, which can facilitate the cooperation with the oil pipe elevator 2. For example, when the oil pipe 1 is pulled out, the inclined support plate 4 is more convenient for placing the oil pipe 1. After the oil pipe 1 is clamped by the two clamps, it is in a tilted state, but it will not fall over and presents a stable tilted state (after the two clamps clamp the oil pipe 1, the oil pipe elevator 2 can loosen the oil pipe 1 in the air and carry out the lifting work of the next oil pipe 1). The electric telescopic rod A17 shrinks to restore the base plate 10 to its original position. At this time, the support plate 4 is also completely vertical. Figure 3 As shown, in Figure 3 Afterwards, the vertical oil pipe 1 needs to be directly tilted sideways and placed on the oil pipe row 18 that has been laid on the side. Specifically, one end of the base wheel 16 is fixedly connected to a gear A13, and a gear B14 meshing with the gear A13 is provided on the base 12 below the base wheel 16. The axle of the gear B14 is connected to a driving device 15, and the driving device 15 can be a combination of a motor and a gearbox, or a combination of a rack and a hydraulic cylinder. In this embodiment, the driving device 15 is limited by function, as long as it can drive the gear B14 to rotate. The base wheel 16 rotates through the transmission between the gears. The rotation of the base wheel 16 drives the base plate 10 and all the components above the base plate 10 to rotate (including the oil pipe 1), so that the vertical oil pipe 1 is laid down horizontally and placed on the oil pipe row 18. The upper clamp 3 and the lower clamp 9 release the clamping of the oil pipe 1, and the oil pipe 1 is separated from the support plate 4. The base plate 10 is reset by the driving device 15 again, and the support plate 4 is restored to the vertical state again, and re-enters the work of receiving the next oil pipe 1.

[0029] In the present application, the processes of raising the oil pipe 1 and lowering the oil pipe 1 are exactly opposite. One of the processes is described above, and the other process can be imagined by technicians in this field based on experience, so it will not be described in detail.

[0030] The length of the supporting plate 4 is greater than 1 / 2 of the length of the oil pipe 1 and less than 3 / 4 of the length of the oil pipe 1. Such a length can ensure a certain straightening effect while ensuring that the length of the supporting plate 4 is not too long.

[0031] The support plate 4 is formed by splicing at least two sections. After use, the sections are disassembled for easy transportation.

[0032] It should be noted that the appendix of this embodiment Fig. 9 A schematic diagram of the structure of one of the upper clamps 3 is shown, but the attached Fig. 9 This is absolutely not a limitation on the structure of the upper fixture 3, and any fixture that can achieve the clamping and loosening of the oil pipe 1 in an electrically controllable manner is the upper fixture 3 described in this embodiment. The same is true for the lower fixture 9.

[0033] Embodiment 2: This embodiment adds a positioning rod 8 or a positioning slot on the basis of Embodiment 1. The positioning rod 8 protrudes above the base plate 10, and the positioning slot is recessed in the base plate 10. An electric telescopic rod B7 is provided at the lower end of the support plate 4. The retractable end of the electric telescopic rod B7 is fixedly connected to the lower clamp, thereby realizing the extension and retraction of the electric telescopic rod B7 to drive the lower clamp 9 to move up and down.

[0034] After the oil pipe 1 is lifted by the oil pipe elevator 2, when the oil pipe 1 is lowered downward, the lower end of the oil pipe 1 can be quickly inserted into the positioning rod 8 or the positioning slot (the positioning rod 8 and the positioning slot are set to be either one or the other). The functions of the positioning rod 8 and the positioning slot are the same, which improves the accurate positioning speed of the lower end of the oil pipe 1.

[0035] After the oil pipe 1 reaches the oil pipe row 18, the oil pipe 1 needs to be separated from the positioning rod 8 or the positioning slot. The separation process is that the electric telescopic rod B7 contracts and drives the lower clamp to clamp the oil pipe 1 and pull it out from the positioning rod 8 or the positioning slot, thereby realizing the separation of the oil pipe 1 from the positioning rod 8 or the positioning slot, so that the oil pipe 1 can be freely placed on the oil pipe row 18. Example

[0036] The middle section of the support plate 4 is provided with a groove 5. The existence of the groove 5 enables a gap to exist between the middle section of the support plate 4 and the oil pipe 1 after the oil pipe 1 is clamped by the upper clamp 3 and the lower clamp 9. The gap provides space for the installation of the oil pipe elevator 2. Especially when the oil pipe 1 is lowered, it is convenient for the oil pipe elevator 2 to clamp the oil pipe 1 in a loose state and slide along the oil pipe 1. Figure 4 and Figure 5 As shown, the tubing elevator 2 first acts on the outer side of the tubing 1 in a relaxed state at a low position (a position convenient for workers to operate), but at this time the two can slide relatively freely. When the tubing elevator 2 slides upward to the upper clamp 3, the upper clamp 3 releases the clamping of the tubing 1. At this time, the upper end of the tubing 1 is mainly supported by the tubing elevator 2, and the lower end of the tubing 1 is mainly clamped by the lower clamp 9. After the tubing elevator 2 continues to slide upward to the upper end of the tubing 1, the tubing elevator 2 clamps the end of the tubing 1. At this time, the lower clamp 9 is released, and the tubing elevator 2 can lift the tubing 1.

[0037] In summary, firstly, the present application changes the way of raising and lowering the oil pipe 1, so that a long and bulky base 12 is no longer needed, and only a shorter base 12 is needed. The base plate 10 on the base 12 can rotate, and the support plate 4 on the base plate 10 rotates with it, so as to realize the lateral tilting, and the oil pipe 1 is directly placed horizontally on the oil pipe row 18 from the vertical state. Secondly, the working method of the upper and lower oil pipes 1 greatly simplifies the structure of the existing power catwalk, and no longer requires frequent lifting and lowering of the slope, and no longer requires the installation of several hydraulic cylinders between the slope and the base 12, etc., which reduces the manufacturing cost and maintenance cost of the equipment. Finally, after the oil pipe 1 is pulled out, as long as the upper clamp 3 and the lower clamp 9 clamp the oil pipe 1, the oil pipe elevator 2 can release the oil pipe 1 and put it into the lifting work of the next oil pipe 1, and it is not necessary to wait until the oil pipe 1 is completely placed in the V-groove of the slope like the prior art before releasing the oil pipe 1, so the present application is more conducive to improving work efficiency.

Claims

1. A powered catwalk, comprising a base (12), characterized in that: A base wheel (16) is arranged on the base (12) and can rotate relative to the base (12). The base wheel (16) is arranged horizontally. A base plate (10) is arranged on the base wheel (16). The base plate (10) near one end of the wellhead is hinged to the base wheel (16). A support plate (4) is installed on the base plate (10) and is in a vertical state with the base plate (10). The oil pipe (1) to be lifted is placed on the side of the support plate (4). Electric clamps for clamping the oil pipe (1) are arranged above and below the support plate (4). For the convenience of distinction, they are respectively called upper clamps and lower clamps. One end of the base wheel (16) is fixedly connected to a gear A (13). The base wheel (16) is provided with a gear A (13) at one end. A gear B (14) meshing with a gear A (13) is disposed on the base (12); the axle of the gear B (14) is connected to a driving device (15); the driving device (15) can drive the gear B (14) to rotate, thereby realizing the rotation of the base wheel (16) through the transmission between the gears; a rib plate (6) for increasing the stability of the support plate (4) is disposed on the side of the support plate (4); an electric telescopic rod A (17) is disposed between the rib plate (6) and the base wheel (16); the extension action of the electric telescopic rod A (17) drives the base plate (10) and various components installed above the base plate (10) to tilt toward the wellhead direction.

2. A powered catwalk according to claim 1, characterized in that: A positioning rod (8) protruding from the base plate (10) is mounted on the base plate (10), and an electric telescopic rod B (7) is arranged at the lower end of the support plate (4), and the telescopic end of the electric telescopic rod B (7) is fixedly connected to the lower clamp.

3. A powered catwalk according to claim 1, characterized in that: The base plate (10) is provided with a positioning slot recessed in the base plate (10), the lower end of the support plate (4) is provided with an electric telescopic rod B (7), and the telescopic end of the electric telescopic rod B (7) is fixedly connected to the lower clamp.

4. A powered catwalk according to claim 1, characterized in that: The middle section of the support plate (4) is provided with a groove (5). The existence of the groove (5) enables a distance to exist between the oil pipe (1) and the middle section of the support plate (4) after the oil pipe (1) is clamped by the upper clamp (3) and the lower clamp (9), thereby facilitating the oil pipe hanging clamp (2) to clamp the oil pipe (1) in a loose state and slide along the oil pipe (1).

5. The powered catwalk according to claim 1, characterized in that: The length of the support plate (4) is greater than 1 / 2 of the length of the oil pipe (1) and less than 3 / 4 of the length of the oil pipe (1).

6. A powered catwalk according to claim 1, characterized in that: The support plate (4) is formed by splicing at least two sections.

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