A coiled tubing recovery device for an offshore platform

Abstract

The utility model discloses a continuous oil pipe recovery device for ocean platform, wherein the carding subassembly includes the fixed frame of fixed in the winding mechanism both sides, is hinged with mounting bracket and adjusting cylinder on the fixed frame, and the output of adjusting cylinder is hinged with mounting bracket, is provided with track bar and lead screw between two mounting brackets, and track bar and mounting bracket fixed connection are set up on the track bar and are provided with sliding frame, are provided with adjusting lever on sliding frame, and one end of adjusting lever is provided with guide frame, and lead screw is rotatably connected with mounting bracket, and the matching sliding block of lead screw is set up, and sliding block is connected with adjusting lever. Can realize orderly winding when recycling continuous oil pipe, avoid oil pipe disorderly winding. Adjusting cylinder can be through telescopic to drive mounting bracket rotation to adjust angle flexibly, improve the adaptability of device. Track bar provides orientation for sliding frame, and lead screw moves under the drive of adjusting motor and drives sliding block, and the position of guide frame is adjusted through adjusting lever, realizes the even winding of oil pipe, improves winding quality.

Description

Technical Field

[0001] This utility model belongs to the field of offshore platform drilling technology, and in particular relates to a coiled tubing recovery device for offshore platforms. Background Technology

[0002] In the field of offshore oil and gas resource development, coiled tubing, due to its excellent bending and deformation capabilities, can be used in rolls and can reach lengths of several kilometers, playing a crucial role in drilling, well completion, well workover, oil testing and production testing, and logging operations. Coiled tubing equipment offers advantages such as live operation and rapid tripping speeds, and is used throughout the entire offshore oil and gas extraction process, significantly improving extraction efficiency and reducing operating costs.

[0003] However, in actual operations, the retrieval of coiled tubing faces numerous challenges. Offshore platforms operate in complex environments, with undulating waves and strong winds causing continuous rocking and swaying. Under these conditions, traditional coiled tubing retrieval devices struggle to ensure stable and orderly tubing winding. If the tubing becomes tangled and disordered during winding, it can easily lead to wear, twisting, or even breakage, severely impacting the service life of the coiled tubing and the safety of subsequent operations.

[0004] Therefore, we need to design a coiled tubing recovery device for offshore platforms to solve these problems. Utility Model Content

[0005] The problem to be solved by this invention is to provide a coiled tubing recovery device for offshore platforms.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A coiled tubing recovery device for an offshore platform includes a support base, a winding mechanism mounted on the support base, and a combing assembly mounted on one side of the base of the winding mechanism. The combing assembly includes fixed frames fixed to both sides of the winding mechanism. A mounting frame and an adjusting cylinder are hinged to the fixed frames, with the output end of the adjusting cylinder hinged to the mounting frame. A track rod and a lead screw are arranged between the two mounting frames. The track rod is fixedly connected to the mounting frame. A sliding frame is mounted on the track rod, and an adjusting rod is mounted on the sliding frame. A guide frame is provided at one end of the adjusting rod. The lead screw is rotatably connected to the mounting frame, and a slider is matched on the lead screw, with the slider connected to the adjusting rod. An adjusting motor is also fixedly mounted on the mounting frame, with the output end of the adjusting motor connected to one end of the lead screw.

[0008] Preferably, there are two track rods, which are distributed parallel to each other. The sliding frame is located between the two track rods. Several sets of track wheels are provided on both sides of the sliding frame, with two track wheels in each set. The track rod passes through the two sets of track wheels on the same side of the sliding frame.

[0009] This design, with two parallel track rods providing symmetrical support to the sliding frame from both sides, significantly enhances the stability of the sliding frame during movement, effectively preventing it from shifting or wobbling and ensuring precise guiding position. The multiple sets of track wheels on both sides of the sliding frame, with track rods passing between each set of two track wheels, convert the sliding friction between the sliding frame and the track rods into rolling friction, significantly reducing motion resistance and making the movement of the sliding frame smoother and less strenuous. It also reduces component wear and extends the service life of the device.

[0010] Preferably, the guide frame includes a connecting seat, a lower clamping plate, an upper clamping plate, and a tension spring. The connecting seat is fixedly mounted on the adjusting rod. The lower clamping plate is hinged to the connecting seat, and a lower clamping roller is rotatably mounted on the lower clamping plate. The upper clamping plate is located above the lower clamping plate, and the lower clamping plate and the upper clamping plate are connected by a tension spring. An upper clamping roller is also mounted on the upper clamping plate, and the upper clamping roller is positioned opposite to the lower clamping roller.

[0011] This configuration ensures a stable connection between the guide frame and the adjusting rod, guaranteeing that the guide frame moves synchronously with the adjusting rod. The hinged lower clamping plate and the upper clamping plate, connected by a tension spring, utilize the spring's elasticity to ensure the upper and lower clamping rollers always tightly grip the tubing, preventing displacement due to factors such as platform swaying during guidance and ensuring stability. The rotating design of the lower and upper clamping rollers transforms the sliding friction between the tubing and the guide frame into rolling friction, reducing wear on the tubing surface, protecting its performance, and improving tubing transport and winding efficiency.

[0012] Preferably, the winding mechanism includes two rotating seats fixed on the base, a rotating tube disposed between the two rotating seats, a support tube and two ring plates fitted on the outside of the rotating tube, the support tube being located between the two ring plates and fixedly connected to the two ring plates, a winding roller fitted on the outside of the support tube, the winding roller being fixedly connected to the support tube by a plurality of connecting rods, the plurality of connecting rods being evenly distributed around the circumference of the support tube, one end being connected to the support tube and the other end being connected to the winding roller, and the combing assembly being located on one side of the winding roller.

[0013] This configuration provides stable rotational support for the rotating tube with the two rotating seats, ensuring smooth operation during winding. The combined structure of the support tube and the two ring plates provides a solid mounting foundation for the winding drum. Simultaneously, several circumferentially distributed connecting rods connect the winding drum and the support tube, significantly reducing the overall structural weight, saving material costs, and lowering energy consumption during rotation while ensuring connection strength. The combing assembly, located on one side of the winding drum, pre-comb and guides the oil pipe before it enters the drum, ensuring orderly winding of the oil pipe and preventing messy accumulation.

[0014] Preferably, a driven pulley is fixedly fitted on the rotating tube between one of the ring plates and the rotating seat, and a winding motor is fixedly installed on the base on one side of the driven pulley. A drive pulley is fixedly installed at the output end of the winding motor, and the drive pulley and the driven pulley are connected by a transmission belt.

[0015] In this configuration, the winding motor drives the rotating tube to rotate via a belt drive system consisting of a drive pulley, a transmission belt, and a driven pulley. The rotating tube then drives the winding drum to achieve tubing winding. Belt drives offer smooth transmission and shock absorption, effectively absorbing the impact caused by changes in tubing tension during winding, reducing damage to the winding motor and related components, and extending equipment lifespan. Furthermore, this transmission structure is simple, easy to install and maintain. In the humid, salt-spray environment of offshore platforms, it facilitates maintenance and component replacement by personnel, reducing maintenance costs.

[0016] Preferably, a connecting pipe is also provided on the rotating tube, the connecting pipe is interconnected with the rotating tube, and the free end of the connecting pipe passes through the support tube and is connected to the winding drum.

[0017] This configuration, where the connecting pipe is connected to the rotating pipe and the free end is connected to the winding drum, allows for connection with the oil pipe that needs to be wound. This enables the oil pipe to operate continuously during the winding process, simplifies the operation process, improves recovery efficiency, increases the functionality of the device, and makes the device better able to meet the needs of continuous operation of offshore platforms.

[0018] Preferably, a liquid suction pump is also fixedly installed on one of the rotating seats. The input end of the liquid suction pump is rotatably connected to the rotating tube, and the output end is fixedly installed with a liquid outlet pipe. Several liquid outlet control valves are also installed on the liquid outlet pipe.

[0019] This configuration allows the suction pump to connect to the rotating tube via a rotating base, enabling simultaneous extraction of residual liquid from the tubing during winding. The liquid is then discharged through the outlet pipe and outlet control valve, facilitating control of the discharge process according to actual needs. This prevents residual liquid from causing corrosion or contamination in the tubing, effectively protecting the tubing and extending its service life. Furthermore, the online extraction function reduces subsequent processing steps, improving the environmental friendliness and economy of recovery operations, and meeting the environmental performance requirements of offshore platforms.

[0020] The advantages and positive effects of this utility model are:

[0021] This invention, through the cooperation of the winding mechanism and the combing assembly, enables orderly winding of continuous tubing, preventing tangled coiling. The hinged structure of the fixed frame, mounting frame, and adjusting cylinder allows the adjusting cylinder to flexibly drive the mounting frame to rotate, thereby adjusting the angle of the combing assembly to adapt to changes in the tubing's entry angle at different winding stages, enhancing the device's adaptability. The track rod guides the sliding frame, and the lead screw, driven by the adjusting motor, moves the slider, which in turn adjusts the position of the guide frame via the adjusting rod, achieving uniform winding of the tubing on the winding mechanism, improving winding quality, and reducing damage caused by uneven tubing stacking. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the overall structure of this utility model. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the connection between the connecting pipe and the rotating pipe of this utility model;

[0026] Figure 4 yes Figure 1 Enlarged view of the structure at point A in the image.

[0027] The annotations in the attached figures are explained as follows:

[0028] 1. Base; 2. Track wheel; 3. Rewinding motor; 4. Drive pulley; 5. Transmission belt; 6. Driven pulley; 7. Fixing frame; 8. Mounting frame; 9. Adjusting cylinder; 10. Track rod; 11. Sliding frame; 12. Guide frame; 121. Upper clamping plate; 122. Lower clamping plate; 123. Connecting seat; 124. Lower clamping roller; 125. Upper clamping roller; 126. Tension spring; 13. Adjusting rod; 14. Slider; 15. Lead screw; 16. Traveling motor; 17. Suction pump; 18. Discharge pipe; 19. Rewinding drum; 20. Connecting rod; 21. Support pipe; 22. Rotating pipe; 23. Rotating seat; 24. Ring plate; 25. Connecting pipe; 26. Discharge control valve. Detailed Implementation

[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The present invention will be further described below with reference to the accompanying drawings:

[0032] Example 1: As Figures 1-4As shown, a coiled tubing recovery device for an offshore platform includes a support base 1, on which a winding mechanism is mounted. A combing assembly is mounted on one side of the base 1 of the winding mechanism. The combing assembly guides and tidies the coiled tubing before it enters the winding mechanism. The combing assembly includes fixed frames 7 on both sides of the winding mechanism. Mounting frames 8 and adjusting cylinders 9 are hinged to the fixed frames 7, with the output end of the adjusting cylinder 9 hinged to the mounting frames 8. When the adjusting cylinder 9 extends or retracts, it can drive the mounting frames 8 to rotate around the fixed frames 7 to adjust the angle. A track rod 10 and a lead screw 15 are provided between the two mounting frames 8. The track rod 10 and the mounting frames 8 are fixedly connected. A sliding frame 11 is provided on the rod 10, which can slide along the track rod 10. An adjusting rod 13 is provided on the sliding frame 11, and a guide frame 12 is provided at one end of the adjusting rod 13. The guide frame 12 is used to directly contact and guide the continuous tubing. The lead screw 15 is rotatably connected to the mounting frame 8. A slider 14 is matched on the lead screw 15, and the slider 14 is connected to the adjusting rod 13. When the lead screw 15 rotates, it can drive the adjusting rod 13 and the sliding frame 11 to move along the track rod 10 through the slider 14. An adjusting motor 16 is also fixedly provided on the mounting frame 8. The output end of the adjusting motor 16 is connected to one end of the lead screw 15. The operation of the adjusting motor 16 can drive the lead screw 15 to rotate.

[0033] There are two track rods 10, which are distributed parallel to each other. The sliding frame 11 is located between the two track rods 10. Several sets of track wheels 2 are provided on both sides of the sliding frame 11. Each set of track wheels 2 consists of two track rods. The track rods 10 pass through the two sets of track wheels 2 on the same side of the sliding frame 11. The track wheels 2 can roll along the track rods 10, thereby driving the sliding frame 11 to move smoothly.

[0034] The guide frame 12 includes a connecting seat 123, a lower clamping plate 122, an upper clamping plate 121, and a tension spring 126. The connecting seat 123 is fixedly installed on the adjusting rod 13, so that the guide frame 12 moves synchronously with the adjusting rod 13. The lower clamping plate 122 is hinged to the connecting seat 123, and a lower clamping roller 124 is rotatably arranged on the lower clamping plate 122. The upper clamping plate 121 is located above the lower clamping plate 122, and the lower clamping plate 122 and the upper clamping plate 121 are connected by the tension spring 126. The tension spring 126 can pull the upper clamping plate 121 to move closer to the lower clamping plate 122. An upper clamping roller 125 is also arranged on the upper clamping plate 121. The upper clamping roller 125 is positioned opposite to the lower clamping roller 124. The continuous oil pipe can pass between the lower clamping roller 124 and the upper clamping roller 125, and the guide is achieved by the clamping of the two.

[0035] The winding mechanism includes two rotating seats 23 fixed on the base 1. A rotating tube 22 is arranged between the two rotating seats 23. The rotating tube 22 can rotate around the axis of the rotating seats 23. A support tube 21 and two ring plates 24 are fitted on the outside of the rotating tube 22. The support tube 21 is located between the two ring plates 24 and is fixedly connected to the two ring plates 24. The support tube 21 and the ring plates 24 form an integral structure and rotate synchronously with the rotating tube 22. A winding roller 19 is fitted on the outside of the support tube 21. The winding roller 19 is fixedly connected to the support tube 21 by several connecting rods 20. The connecting rods 20 are evenly distributed around the circumference of the support tube 21, with one end connected to the support tube 21 and the other end connected to the winding roller 19. When the support tube 21 rotates, it drives the winding roller 19 to rotate through the connecting rods 20 to realize the winding of the continuous oil pipe. The combing component is located on one side of the winding roller 19. The continuous oil pipe after being combed by the combing component directly enters the winding roller 19.

[0036] A driven pulley 6 is fixedly mounted on the rotating tube 22 between one of the ring plates 24 and the rotating seat 23. The driven pulley 6 rotates synchronously with the rotating tube 22. A winding motor 3 is fixedly mounted on the base 1 on one side of the driven pulley 6. A drive pulley 4 is fixedly mounted on the output end of the winding motor 3. The winding motor 3 drives the drive pulley 4 to rotate. The drive pulley 4 and the driven pulley 6 are connected by a transmission belt 5. The drive pulley 4 drives the driven pulley 6 to rotate through the transmission belt 5, thereby causing the rotating tube 22 to rotate.

[0037] A connecting pipe 25 is also provided on the rotating pipe 22. The connecting pipe 25 is connected to the rotating pipe 22, and the free end of the connecting pipe 25 passes through the support pipe 21 and is connected to the winding drum 19. Fluid can enter the continuous oil pipe wound by the winding drum 19 from the rotating pipe 22 through the connecting pipe 25.

[0038] A suction pump 17 is fixedly installed on one of the rotating seats 23. The input end of the suction pump 17 is rotatably connected to the rotating tube 22. The suction pump 17 can draw fluid from inside the rotating tube 22. The output end is fixedly installed with an outlet pipe 18. The drawn fluid is discharged through the outlet pipe 18. Several outlet control valves 26 are also installed on the outlet pipe 18. The outlet control valves 26 can control the opening and closing of the outlet pipe 18 and the amount of liquid discharged.

[0039] The above description details one embodiment of the present utility model, but it is merely a preferred embodiment and should not be construed as limiting the scope of the present utility model. All equivalent variations and improvements made within the scope of the present utility model application should still fall within the patent coverage of the present utility model.

Claims

1. A coiled tubing recovery unit for an offshore platform comprising a support base (1) on which is provided a take-up mechanism characterised in that: A combing assembly is provided on the base (1) on one side of the winding mechanism. The combing assembly includes a fixed frame (7) fixed on both sides of the winding mechanism. A mounting frame (8) and an adjusting cylinder (9) are hinged on the fixed frame (7), and the output end of the adjusting cylinder (9) is hinged to the mounting frame (8). A track rod (10) and a lead screw (15) are provided between the two mounting frames (8). The track rod (10) and the mounting frame (8) are fixedly connected. A combing assembly is provided on the track rod (10). A sliding frame (11) is provided, and an adjusting rod (13) is provided on the sliding frame (11). A guide frame (12) is provided at one end of the adjusting rod (13). A lead screw (15) is rotatably connected to the mounting frame (8). A slider (14) is matched on the lead screw (15) and the slider (14) is connected to the adjusting rod (13). An adjusting motor (16) is also fixedly provided on the mounting frame (8). The output end of the adjusting motor (16) is connected to one end of the lead screw (15).

2. A coiled tubing recovery apparatus for use on an offshore platform according to claim 1, characterized in that: There are two track rods (10), which are distributed parallel to each other. The sliding frame (11) is located between the two track rods (10). Several sets of track wheels (2) are provided on both sides of the sliding frame (11). Each set of track wheels (2) consists of two track rods. The track rod (10) passes between the two sets of track wheels (2) on the same side of the sliding frame (11).

3. A coiled tubing recovery apparatus for use on an offshore platform according to claim 1, characterized in that: The guide frame (12) includes a connecting seat (123), a lower clamping plate (122), an upper clamping plate (121), and a tension spring (126). The connecting seat (123) is fixedly installed on the adjusting rod (13). The lower clamping plate (122) is hinged to the connecting seat (123), and a lower clamping roller (124) is rotatably arranged on the lower clamping plate (122). The upper clamping plate (121) is located above the lower clamping plate (122), and the lower clamping plate (122) and the upper clamping plate (121) are connected by the tension spring (126). An upper clamping roller (125) is also arranged on the upper clamping plate (121), and the upper clamping roller (125) is positioned opposite to the lower clamping roller (124).

4. A coiled tubing recovery apparatus for use on an offshore platform according to claim 1, characterized in that: The winding mechanism includes two rotating seats (23) fixed on the base (1), a rotating tube (22) is provided between the two rotating seats (23), a support tube (21) and two ring plates (24) are fitted on the outside of the rotating tube (22), the support tube (21) is located between the two ring plates (24) and is fixedly connected to the two ring plates (24), a winding roller (19) is fitted on the outside of the support tube (21), the winding roller (19) and the support tube (21) are fixedly connected by several connecting rods (20), the several connecting rods (20) are evenly distributed around the circumference of the support tube (21), one end is connected to the support tube (21) and the other end is connected to the winding roller (19), and the combing assembly is located on one side of the winding roller (19).

5. A coiled tubing recovery apparatus for use on an offshore platform according to claim 4, wherein: A driven pulley (6) is fixedly mounted on the rotating tube (22) between one of the ring plates (24) and the rotating seat (23). A winding motor (3) is fixedly mounted on the base (1) on one side of the driven pulley (6). A drive pulley (4) is fixedly mounted on the output end of the winding motor (3). The drive pulley (4) and the driven pulley (6) are connected by a transmission belt (5).

6. A coiled tubing recovery apparatus for use on an offshore platform according to claim 4, characterized in that: A connecting pipe (25) is also provided on the rotating tube (22). The connecting pipe (25) is connected to the rotating tube (22), and the free end of the connecting pipe (25) passes through the support tube (21) and is connected to the winding drum (19).

7. A coiled tubing recovery apparatus for use on an offshore platform according to claim 6, characterized in that: A suction pump (17) is fixedly installed on one of the rotating seats (23). The input end of the suction pump (17) is rotatably connected to the rotating tube (22), and the output end is fixedly installed with an outlet pipe (18). Several outlet control valves (26) are also installed on the outlet pipe (18).

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