Pipe pushing device of oil pipe conveyor for automatic workover operation

Abstract

The invention provides an oil pipe conveyor pipe pushing device for automatic workover treatment. The oil pipe conveyor pipe pushing device comprises a power system and a small tackle driven by the power system to act. The jigger comprises a jigger main body with a V-shaped structure; a plurality of rollers are mounted on the lower surface of the jigger body, an oil pipe skid-mounted plate is hinged to one end of the upper surface of the jigger body, one end of an oil pipe is arranged on the oil pipe skid-mounted plate, and the oil pipe skid-mounted plate can be driven by a power system to turn over from the horizontal direction to the vertical direction so as to lift one end of the oil pipe. An oil pipe is arranged on the jigger body provided with the oil pipe skid-mounted plate, so that the oil pipe can be pushed on the slide way when the oil pipe is lifted in automatic workover operation, screw threads of the oil pipe are protected, the end part of a pipe column can be lifted up, and the lifting operation is facilitated.

Description

Technical Field

[0001] The invention belongs to the field of drilling and downhole operation, and relates to the oil pipe pulling and lowering operation of an oil pipe conveyor in large and small automated well repair operations, and specifically is a pipe pushing device for an oil pipe conveyor for automated well repair operations. Background Art

[0002] At present, with the deepening of oil field development, well repair operations are becoming more and more automated and mechanized, among which tubing conveyors are widely used in the lifting and lowering of oil well extraction tubing and cementing pipe strings. However, there are some problems in the process of using tubing conveyors to lift and lower pipe strings.

[0003] First, the oil pipe sliding on the slide of the conveyor can easily cause the thread to be damaged, which will seriously affect the construction quality and may even cause the pipe string to break. The thread plays an important role in connection and sealing in oil well operations. Once damaged, the oil pipe will lose connection and cause leakage. Secondly, because the oil pipe fits horizontally with the conveyor slide, the end of the pipe string is not easy to lift when the pipe string is lifted. The traditional solution is to use a pad or a shim to lift the end of the pipe string so that the lifting and lowering work can be carried out smoothly. However, this method not only increases the complexity and time-consuming of the work, but also easily causes damage to the equipment during operation. In addition, due to the heavy weight of the pipe string, it requires the cooperation of multiple people, which increases the demand for human resources. Summary of the invention

[0004] In order to overcome the deficiencies in the prior art, the present invention provides a pipe pushing device for an oil pipe conveyor for automated well repair operations, which places the oil pipe on a small pulley body equipped with an oil pipe skid plate, and can push the oil pipe on a slideway when lifting and lowering the oil pipe in automated well repair operations, thereby protecting the oil pipe thread and being able to lift the end of the pipe string to facilitate the lifting and lowering work.

[0005] The technical solution adopted by the present invention to solve the technical problem is:

[0006] A tubing conveyor pipe pushing device for automated well repair operations comprises a power system and a small pulley driven by the power system; the small pulley comprises a small pulley body with a V-shaped structure; a plurality of rollers are mounted on the lower surface of the small pulley body, an oil pipe skid plate is hinged at one end of the upper surface, one end of the oil pipe is placed on the oil pipe skid plate, and the oil pipe skid plate can be flipped from a horizontal direction to a vertical direction under the drive of the power system to lift one end of the oil pipe.

[0007] Based on the above scheme, the oil pipe is placed on a small pulley and the small pulley is pushed by the power system to achieve the pushing of the oil pipe on the conveyor slideway, thereby avoiding friction damage to the oil pipe thread; by setting up an oil pipe skid plate, the operation of using a pad or a pad knife to lift the high end when lifting and lowering the pipe string can be eliminated. Through the drive of the power system, one end of the oil pipe can be lifted conveniently and quickly, saving the demand for human resources, simplifying the process, and improving the efficiency of the operation.

[0008] As a further implementation scheme of the present invention, the tail end of the oil pipe skid-mounted plate is hinged to the small pulley body through a pin shaft, and the front end is flipped around the pin shaft, the flipping angle is 90°, and the side face of the flipping end has a V-shaped groove.

[0009] Based on the above solution, by using a pin to connect the oil pipe skid plate and the small pulley body, a stable articulation and flipping movement can be provided to ensure that one end of the oil pipe can be accurately lifted during the lifting and lowering process. After the oil pipe skid plate is flipped upward by 90°, the upper end is V-shaped, which can ensure that the oil pipe is centered and avoid sliding or twisting during the lifting of the oil pipe end, so that the operator can perform the lifting and lowering work more easily, simplifying the operation process.

[0010] As a further implementation scheme of the present invention, the end face of the rear end of the oil pipe skid plate is fixedly connected to a T-shaped plate located on the outside of the small pulley body and extending vertically downward. When the flipping end of the oil pipe skid plate is flipped from the horizontal direction to the vertical direction, the T-shaped plate contacts and limits the bottom of the small pulley body.

[0011] Based on the above solution, the contact limit between the vertical downward extension of the T-plate and the bottom of the small pulley body can ensure that the tubing skid plate will not exceed the predetermined range during the flipping process, avoiding excessive flipping or deviation from the set position. Through the limit design of the T-plate, the operator does not need additional judgment and control, and the tubing skid plate actively contacts and limits the bottom of the small pulley body during the flipping process, which simplifies the operation process and improves the convenience and efficiency of the operation.

[0012] As a further embodiment of the present invention, an oil pipe baffle extending vertically upward is installed on the T-plate.

[0013] Based on the above scheme, the oil pipe baffle extending vertically upward can play a limiting role during the oil pipe pushing process, prevent the oil pipe from jumping out, maintain the stability of the oil pipe, and improve the safety of operation.

[0014] As a further embodiment of the present invention, the upper surface of the T-shaped plate is connected to a shock-absorbing pad surrounded by the inner side of the oil pipe baffle.

[0015] Based on the above scheme, the shock-absorbing pad can absorb shock and reduce vibration during the oil pipe pushing process, reduce the impact force on the oil pipe and other equipment, and reduce potential damage and wear; by reducing the transmission of shock and vibration, the shock-absorbing pad can extend the service life of the device and improve reliability.

[0016] As a further implementation scheme of the present invention, a rectangular plate extending vertically downward is connected to the middle of the lower surface of the trolley body, and a long strip hole is opened on the rectangular plate, and the long strip hole is connected to the power system.

[0017] As a further implementation scheme of the present invention, the power system adopts a hydraulic winch, and both ends of the hydraulic winch wire rope are respectively connected to the front and rear ends of the long strip hole on the rectangular plate.

[0018] Based on the above scheme, by connecting the hydraulic winch with the long strip hole on the rectangular plate, stable power transmission can be achieved. The hydraulic winch uses the hydraulic system to generate thrust, and transmits the force to the rectangular plate through the tension of the wire rope, thereby effectively providing power for pushing the oil pipe, ensuring the power stability and reliability during the process of lifting and lowering the pipe string. The hydraulic winch has a high power output and can push the oil pipe quickly and stably.

[0019] As a further embodiment of the present invention, the roller is a long cylindrical structure, and a plurality of rollers are symmetrically arranged on both sides of the lower surface of the trolley body.

[0020] Based on the above scheme, by adopting multiple long cylindrical structure rollers, smoother movement can be achieved. Each roller bears part of the load, thereby reducing the pressure and friction on a single roller, ensuring the smooth sliding of the pulley and reducing friction and resistance.

[0021] The beneficial effects of the present invention include:

[0022] Easy to operate: Through the power system and the small pulley driven by the power system, the oil pipe can be easily pushed on the conveyor slideway to avoid friction damage to the oil pipe thread;

[0023] Flipping function of the tubing skid: The tubing skid can be flipped from horizontal to vertical under the drive of the power system to lift one end of the tubing, eliminating the operation of using pads or knives to lift the high end when lifting the tubing string. Driven by the power system, one end of the tubing can be lifted quickly and easily, saving the demand for human resources, simplifying the process and improving the efficiency of the operation.

[0024] Improve work efficiency: Through automated operation and stable pushing, the operation time is reduced and the work efficiency is improved.

[0025] In summary, the device effectively solves the problem of pushing the oil pipe on the slideway when lifting and lowering the oil pipe in automated well repair operations, protects the oil pipe threads, and the device has a simple structure and low processing and manufacturing costs, and is suitable for promotion and use in automated well repair operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a side view of the overall structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the oil pipe skid plate in the flipping state;

[0029] Figure 4 It is a schematic diagram of the hydraulic winch structure.

[0030] In the figure: 1. Oil pipe baffle; 2. Shock-absorbing pad; 3. Oil pipe skid plate; 4. Small pulley body; 5. Roller; 6. Pin shaft; 7. T-plate; 8. Rectangular plate; 9. Long strip hole; 10. Hydraulic winch. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by terms such as “vertical” and “horizontal” are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] Example 1

[0035] Aiming at the problem that the oil pipe sliding on the slideway of the conveyor is likely to cause thread damage, a pipe pushing device for an oil pipe conveyor for automated well repair operations is provided to effectively protect the oil pipe threads during the operation and ensure the construction quality.

[0036] The device is mainly composed of a small pulley and a hydraulic winch 10. Figure 1As shown, the small pulley is assembled from components such as an oil pipe baffle 1, a shock-absorbing pad 2, an oil pipe skid plate 3, a small pulley body 4, a roller 5, a pin 6, etc.

[0037] The trolley body 4 is a V-shaped structure, with a rectangular plate 8 connected to the bottom, and a long strip hole 9 is opened on the rectangular plate 8. The front and rear ends of the long strip hole 9 are respectively connected to the two ends of the hydraulic winch wire rope. When the hydraulic winch 10 reverses, the trolley moves to the front end of the slide; when the hydraulic winch 10 rotates forward, the trolley moves to the rear end of the slide.

[0038] Four rollers 5 are evenly installed at the bottom of the small pulley body 4. The rollers 5 are long cylinders with bearings installed inside. The pin shaft 6 at the rear end of the small pulley body 4 is hinged with the oil pipe skid plate 3, such as Figure 2 As shown, the end face of the rear end of the oil pipe skid plate 3 is fixedly connected with a T-shaped plate 7 located outside the small pulley body 1 and extending vertically downward. The oil pipe skid plate 3 can be turned 90° along the pin 6. When the turning end of the oil pipe skid plate 3 is turned upward by 90°, the T-shaped plate 7 contacts the bottom of the small pulley body 1 to play a limiting role. After the oil pipe skid plate 3 is turned 90°, the upper end is V-shaped, which can ensure that the oil pipe is centered. Figure 3 shown.

[0039] An oil pipe baffle 1 extending vertically upward is mounted on the T-shaped plate 7 , and a shock-absorbing pad 2 surrounded by the inner side of the oil pipe baffle 1 is connected to the upper surface of the T-shaped plate 7 to play a buffering role.

[0040] When in use, the oil pipe body is placed on the small pulley body 4, and the end of the oil pipe is placed on the oil pipe skid plate 3. The hydraulic winch 10 rotates the wire rope to pull the small pulley forward and backward. When the small pulley slides to the tail end of the conveyor and collides, the hydraulic winch 10 power is used to make the oil pipe skid plate 3 tilt up, thereby driving the tail end of the oil pipe to tilt up, preparing for the oil pipe to be removed from the oil pipe conveyor.

[0041] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A tubing conveyor pushing pipe device for automated well repair operations, characterized in that: The invention comprises a power system and a small pulley driven by the power system; the small pulley comprises a small pulley body (1) of a V-shaped structure; a plurality of rollers (5) are installed on the lower surface of the small pulley body (1); an oil pipe skid plate (3) is hingedly connected to one end of the upper surface, one end of the oil pipe is placed on the oil pipe skid plate (3), and the oil pipe skid plate (3) can be flipped from a horizontal direction to a vertical direction under the drive of the power system to lift one end of the oil pipe.

2. The tubing conveyor pushing pipe device for automated well repairing operation according to claim 1, characterized in that: The rear end of the oil pipe skid plate (3) is hinged to the small pulley body (1) through a pin shaft (6), and the front end is flipped around the pin shaft (6) with a flip angle of 90°. The side surface of the flip end has a V-shaped groove.

3. The tubing conveyor pushing device for automated well repairing operation according to claim 2, characterized in that: The end face of the rear end of the oil pipe skid plate (3) is fixedly connected to a T-shaped plate (7) located outside the small pulley body (1) and extending vertically downward. When the flip end of the oil pipe skid plate (3) flips from a horizontal direction to a vertical direction, the T-shaped plate (7) contacts and limits the bottom of the small pulley body (1).

4. The tubing conveyor pushing pipe device for automated well repairing operation according to claim 3, characterized in that: An oil pipe baffle (1) extending vertically upward is installed on the T-shaped plate (7).

5. The tubing conveyor pushing pipe device for automated well repairing operation according to claim 4, characterized in that: The upper surface of the T-shaped plate (7) is connected to a shock-absorbing pad (2) which is surrounded by the inner side of the oil pipe baffle (1).

6. The tubing conveyor pushing pipe device for automated well repairing operation according to claim 1, characterized in that: A rectangular plate (8) extending vertically downward is connected to the middle of the lower surface of the small pulley body (1), and a long strip hole (9) is opened on the rectangular plate (8), and the long strip hole (9) is connected to the power system.

7. The tubing conveyor pipe pushing device for automated well repairing operation according to claim 6, characterized in that: The power system adopts a hydraulic winch (10), and the two ends of the steel wire rope of the hydraulic winch (10) are respectively connected to the front and rear ends of the long strip hole (9) on the rectangular plate (8).

8. The tubing conveyor pipe pushing device for automated well repairing operations according to any one of claim 1, characterized in that: The roller (5) is a long cylindrical structure, and a plurality of rollers (5) are symmetrically arranged on both sides of the lower surface of the trolley body (1).

Images