Cutting device special for coiled tubing
By designing a special cutting device for continuous oil pipes including a cylinder, a movable cylinder, a cutting knife and a fixed assembly, the problem of first cutting and salvage in the prior art is solved, and efficient cutting and salvage operations are achieved, which improves working efficiency and reduces costs.
Patent Information
- Application Number
- CN202421525467.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-01
AI Technical Summary
When dealing with a continuous oil pipe that is not completely broken, it is necessary to cut it first and then salvage it, resulting in slow salvage efficiency and increasing the labor intensity and cost of workers.
A special cutting device for continuous oil pipes is designed, including a cylinder, a movable cylinder, a cutting knife and a fixing component. The cutting and fixing functions are realized through the motor drive system, allowing staff to salvage the cut oil pipes directly through the fixing component.
After cutting, the device can directly fix and salvage the oil pipe, which significantly improves the salvage efficiency, reduces the work intensity of the staff, and saves costs.
Smart Images
Figure CN222754505U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of continuous oil pipe cutting, in particular to a special continuous oil pipe cutting device. Background Art
[0002] Coiled tubing is a pipe made of low-carbon alloy steel with good flexibility. It is also called flexible tubing. A coil of coiled tubing is several thousand meters long. It can replace conventional tubing for many operations. Coiled tubing operation equipment has the characteristics of pressure operation and continuous lifting and lowering. The equipment is small in size, fast in operation cycle and low in cost.
[0003] In the process of continuous tubing operation, the continuous tubing is often broken or stuck in the well due to sand burial, downhole objects or dirt, heavy oil or high wax content oil, casing damage and other reasons. At this time, we need to salvage the fallen continuous tubing. The existing salvage method needs to cut off the continuous tubing that is not completely broken before salvaging it. This not only increases the labor intensity of the workers, but also has high costs and affects the salvage efficiency. In view of this, we propose a special cutting device for continuous tubing to solve the above problems. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the deficiencies in the prior art, the utility model provides a special cutting device for coiled tubing, which solves the problem that some existing special cutting devices for coiled tubing need to cut the incompletely broken coiled tubing before salvaging, resulting in low salvage efficiency.
[0006] (II) Technical solution
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a special cutting device for continuous oil pipes, comprising a cylinder, a cavity is opened inside the cylinder, a first motor is fixedly connected to the top wall of the cavity, a fixing assembly is provided on the output shaft of the first motor, a movable cylinder is arranged inside the cavity, a cavity is also opened inside the movable cylinder, a second motor is fixedly connected to the bottom wall of the movable cylinder, a cam is fixedly connected to the output shaft of the second motor, a sliding groove is opened on the outer surface of the cam, two connecting rods are slidingly connected inside the sliding groove, cutting knives are fixedly connected to the opposite ends of the two connecting rods, two first through grooves are opened on the outer surface of the movable cylinder, the two cutting knives are respectively slidably connected inside the two first through grooves, a third motor is fixedly connected to the inner wall of the cavity opened inside the cylinder, and a driving assembly is provided on the output shaft of the third motor.
[0008] Preferably, the fixing assembly includes a second rotating rod, the upper end of the second rotating rod is fixedly connected to the output shaft of the first motor, the outer surface of the second rotating rod is sleeved with a second gear, the outer surface of the second gear is meshingly connected to two tooth plates, the opposite side surfaces of the two tooth plates are fixedly connected with L-shaped connecting rods, the outer surface of the cylinder is provided with two second through grooves, and the cross bars of the two L-shaped connecting rods are respectively slidably connected to the inside of the two second through grooves.
[0009] Preferably, one end of the cross bars of the two L-shaped connecting rods extends out of the interior of the two second through grooves respectively, and an extrusion plate is fixedly connected to the outer surface of one end of the two L-shaped connecting rods located outside the cylinder.
[0010] Preferably, two receiving grooves are provided on the outer surface of the cylinder, the two receiving grooves are respectively connected to the inside of the two second through grooves, and the extrusion plate and the receiving grooves are matched.
[0011] Preferably, the driving assembly includes a first rotating rod, the upper end of the first rotating rod is fixedly connected to the output shaft of the third motor, the outer surface of the first rotating rod is sleeved with a first gear, the inner wall of the cavity opened inside the movable cylinder is provided with teeth, and the teeth are meshingly connected with the first gear.
[0012] Preferably, an annular sliding groove is formed on the inner wall of the cavity formed inside the cylinder, and an annular sliding block is sleeved on the outer surface of the movable cylinder, and the annular sliding block is slidably connected inside the annular sliding groove.
[0013] Preferably, anti-slip pads are provided on opposite side surfaces of the two extrusion plates.
[0014] (III) Beneficial effects
[0015] Compared with the prior art, the utility model provides a special cutting device for coiled tubing, which has the following beneficial effects:
[0016] 1. The dedicated cutting device for continuous tubing, when the staff needs to cut the continuous tubing, starts the second motor, and then the staff starts the driving component to make the cutting knife cut the tubing. After the cutting is completed, the staff starts the first motor to drive the movement of the fixing component to fix the cut tubing, and then the tubing can be fished out, which solves the problem that some existing dedicated cutting devices for continuous tubing need to cut the continuous tubing that is not completely broken before fishing, and the fishing efficiency is low. After the staff cuts the tubing, the device can directly fish the tubing through the fixing component, which greatly improves the fishing efficiency of the staff, reduces the work intensity of the staff, saves costs, and has high practicality.
[0017] 2. The dedicated cutting device for the coiled tubing starts the first motor, and finally the extrusion plate will fit with the inner wall of the tubing, so as to fix the tubing to be salvaged, ensure the stability when the tubing is salvaged, and salvage the tubing after the cutting work is completed, thus realizing the integrated cutting and salvaging operation of the coiled tubing. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a structural schematic diagram of a special cutting device for continuous tubing according to the utility model;
[0019] Figure 2 It is a schematic diagram of the internal cross-section of the cylinder of the utility model;
[0020] Figure 3 for Figure 2 The enlarged view of point A in the middle;
[0021] Figure 4 for Figure 1 The enlarged view of point B in the middle;
[0022] Figure 5 for Figure 2 Enlarged view of point C in the middle;
[0023] Figure 6 It is a structural schematic diagram of the second through groove of the utility model.
[0024] In the figure: 1. cylinder; 2. cavity; 3. first motor; 4. storage slot; 5. movable cylinder; 6. second motor; 7. cam; 8. sliding slot; 9. connecting rod; 10. cutting knife; 11. first through slot; 12. third motor; 13. first rotating rod; 14. first gear; 15. teeth; 16. annular sliding slot; 17. annular sliding block; 18. second rotating rod; 19. second gear; 20. tooth plate; 21. L-shaped connecting rod; 22. extrusion plate; 23. second through slot; 24. anti-slip pad. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] See also Figure 1-Figure 6The utility model provides a technical solution: a special cutting device for continuous oil pipes, comprising a cylinder 1, a cavity 2 is opened inside the cylinder 1, a first motor 3 is fixedly connected to the top wall of the cavity 2, an output shaft of the first motor 3 is provided with a fixing assembly, a movable cylinder 5 is arranged inside the cavity 2, a cavity 2 is also opened inside the movable cylinder 5, a second motor 6 is fixedly connected to the bottom wall of the movable cylinder 5, a cam 7 is fixedly connected to the output shaft of the second motor 6, a sliding groove 8 is opened on the outer surface of the cam 7, two connecting rods 9 are slidably connected inside the sliding groove 8, and cutting knives 10 are fixedly connected to the opposite ends of the two connecting rods 9, two first through grooves 11 are opened on the outer surface of the movable cylinder 5, and the two cutting knives 10 are respectively slidably connected inside the two first through grooves 11, a third motor 12 is fixedly connected to the inner wall of the cavity 2 opened in the cylinder 1, and a driving assembly is provided on the output shaft of the third motor 12. When the staff needs to cut the continuous oil pipe, by starting the third motor 12, the third motor 12 is driven to start the cutting. The second motor 6 drives the cam 7 to rotate through the rotation of the output shaft of the second motor 6, and the rotation of the cam 7 drives the connecting rod 9 to slide inside the sliding groove 8. Because the cutting knife 10 is slidably connected to the inside of the first through groove 11, the cutting knives 10 on both sides will slide out from the inside of the first through groove 11 under the restriction of the first through groove 11. The subsequent staff starts the driving component to make the cutting knife 10 cut the oil pipe. After the cutting is completed, the staff starts the first motor 3 to drive the movement of the fixing component to fix the cut oil pipe, and then the oil pipe can be fished out. The above device solves the problem that some existing continuous oil pipe special cutting devices need to cut the continuous oil pipe that is not completely broken before fishing, and the fishing efficiency is slow. After the staff cuts the oil pipe, the device can directly fish the oil pipe through the fixing component, which greatly improves the fishing efficiency of the staff, reduces the work intensity of the staff, saves costs, and has high practicality.
[0027] Furthermore, the fixing assembly includes a second rotating rod 18, the upper end of the second rotating rod 18 is fixedly connected to the output shaft of the first motor 3, the outer surface of the second rotating rod 18 is sleeved with a second gear 19, the outer surface of the second gear 19 is meshingly connected to two tooth plates 20, the opposite side surfaces of the two tooth plates 20 are fixedly connected to an L-shaped connecting rod 21, the outer surface of the cylinder 1 is provided with two second through grooves 23, the cross bars of the two L-shaped connecting rods 21 are respectively slidably connected to the inside of the two second through grooves 23, one end of the cross bars of the two L-shaped connecting rods 21 extends out of the inside of the two second through grooves 23 respectively, the outer surface of the two L-shaped connecting rods 21 located outside the cylinder 1 is fixedly connected to an extrusion plate 22, the outer surface of the cylinder 1 is provided with two receiving grooves 4, the two receiving grooves 4 are respectively connected to the inside of the two second through grooves 23, and the extrusion plate 22 and the receiving groove 4 are adapted. When the staff needs to salvage the oil pipe, by starting the first motor 3, the rotation of the output shaft of the first motor 3 drives the rotation of the second rotating rod 18, and the rotation of the second rotating rod 18 drives the rotation of the second gear 19, and the rotation of the second gear 19 drives the movement of the two toothed plates 20, and the movement of the two toothed plates 20 drives the movement of the two L-shaped connecting rods 21. At this time, the two L-shaped connecting rods 21 will slide inside the second through groove 23, and the movement of the L-shaped connecting rod 21 drives the movement of the squeezing plate 22. At this time, the squeezing plate 22 will no longer be located in the storage groove 4, and finally the squeezing plate 22 will fit with the inner wall of the oil pipe to fix the oil pipe that needs to be salvaged. The stability of the oil pipe during salvage is guaranteed by the above device, so that it can be salvaged after the cutting work is completed, and the integrated cutting and salvaging operation of the continuous oil pipe is realized.
[0028] Furthermore, the driving assembly includes a first rotating rod 13, the upper end of the first rotating rod 13 is fixedly connected to the output shaft of the third motor 12, the outer surface of the first rotating rod 13 is sleeved with a first gear 14, the inner wall of the cavity 2 opened inside the movable cylinder 5 is provided with teeth 15, the teeth 15 and the first gear 14 are meshed and connected, the inner wall of the cavity 2 opened inside the cylinder 1 is provided with an annular sliding groove 16, the outer surface of the movable cylinder 5 is sleeved with an annular sliding block 17, and the annular sliding block 17 is slidably connected inside the annular sliding groove 16. When the third motor 12 is started by the staff, the rotation of the output shaft of the third motor 12 drives the rotation of the first rotating rod 13, and the rotation of the first gear 14 is driven by the rotation of the first rotating rod 13. Because the first gear 14 and the teeth 15 are meshed and connected, the rotation of the first gear 14 will drive the movable cylinder 5 to rotate inside the cylinder 1, and at this time, the annular sliding block 17 will slide inside the annular sliding groove 16, and the rotation of the movable cylinder 5 drives the rotation of the cutting knife 10, and finally the cutting of the oil pipe is realized.
[0029] Furthermore, anti-skid pads 24 are provided on the opposite side surfaces of the two extrusion plates 22. The anti-skid pads 24 are made of soft rubber. The friction between the extrusion plates 22 and the oil pipe can be increased by the provision of the anti-skid pads 24. At the same time, the material of the anti-skid pads 24 can make the extrusion plates 22 fit better with the oil pipe.
[0030] Working principle:
[0031] When the dedicated continuous tubing cutting device is in use, the second motor 6 is started, and the rotation of the output shaft of the second motor 6 drives the cam 7 to rotate, and the rotation of the cam 7 drives the connecting rod 9 to slide inside the sliding groove 8. Because the cutting knife 10 is slidably connected to the inside of the first through groove 11, the cutting knives 10 on both sides will slide out from the inside of the first through groove 11 under the restriction of the first through groove 11. The staff can then start the driving component to make the cutting knife 10 cut the tubing. After the cutting is completed, the staff starts the first motor 3 to drive the movement of the fixing component to fix the cut tubing, and the tubing can be fished out later.
[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A coiled tubing cutting device, comprising a barrel (1), characterized in that: The cylinder (1) is provided with a cavity (2) inside, a first motor (3) is fixedly connected to the top wall of the cavity (2), an output shaft of the first motor (3) is provided with a fixing assembly, a movable cylinder (5) is provided inside the cavity (2), a cavity (2) is also provided inside the movable cylinder (5), a second motor (6) is fixedly connected to the bottom wall of the movable cylinder (5), an output shaft of the second motor (6) is fixedly connected to a cam (7), a sliding groove (8) is provided on the outer surface of the cam (7), two connecting rods (9) are slidably connected inside the sliding groove (8), opposite ends of the two connecting rods (9) are fixedly connected to cutting knives (10), two first through grooves (11) are provided on the outer surface of the movable cylinder (5), the two cutting knives (10) are slidably connected inside the two first through grooves (11), a third motor (12) is fixedly connected to the inner wall of the cavity (2) provided inside the cylinder (1), and a driving assembly is provided on the output shaft of the third motor (12).
2. A coiled tubing cutting device according to claim 1, characterized in that: The fixing assembly comprises a second rotating rod (18), the upper end of the second rotating rod (18) is fixedly connected to the output shaft of the first motor (3), the outer surface of the second rotating rod (18) is sleeved with a second gear (19), the outer surface of the second gear (19) is meshingly connected with two tooth plates (20), the surfaces of the two tooth plates (20) on opposite sides are fixedly connected with L-shaped connecting rods (21), the outer surface of the cylinder (1) is provided with two second through grooves (23), and the cross bars of the two L-shaped connecting rods (21) are respectively slidably connected inside the two second through grooves (23).
3. A coiled tubing cutting device according to claim 2, characterized in that: One end of the crossbar of the two L-shaped connecting rods (21) extends out of the interior of the two second through grooves (23) respectively, and an extrusion plate (22) is fixedly connected to the outer surface of one end of the two L-shaped connecting rods (21) located outside the cylinder (1).
4. A coiled tubing cutting device according to claim 3, characterized in that: The outer surface of the cylinder (1) is provided with two receiving grooves (4), the two receiving grooves (4) are respectively connected to the inside of the two second through grooves (23), and the extrusion plate (22) and the receiving grooves (4) are matched.
5. The coiled tubing cutting device according to claim 1, characterized in that: The driving assembly comprises a first rotating rod (13), the upper end of the first rotating rod (13) is fixedly connected to the output shaft of the third motor (12), the outer surface of the first rotating rod (13) is sleeved with a first gear (14), the inner wall of the cavity (2) opened inside the movable cylinder (5) is provided with teeth (15), and the teeth (15) and the first gear (14) are meshingly connected.
6. The coiled tubing cutting device according to claim 5, characterized in that: An annular sliding groove (16) is formed on the inner wall of the cavity (2) formed inside the cylinder (1), and an annular sliding block (17) is sleeved on the outer surface of the movable cylinder (5). The annular sliding block (17) is slidably connected inside the annular sliding groove (16).
7. The coiled tubing cutting device according to claim 4, characterized in that: Anti-slip pads (24) are provided on opposite surfaces of the two extrusion plates (22).