Electric direct-drive workover rig

Abstract

The utility model relates to the technical field of oil well workover, and discloses an electric direct-drive workover rig which comprises a vehicle body. The derrick is rotationally connected to the right side of the top of the vehicle body, and the pulley is installed at the top of the derrick; the mounting plate is fixedly connected to the right side of the exterior of the vehicle body; the double-head motor is arranged in the mounting plate, and the double-head motor is arranged in the mounting plate; the two screw rods are fixedly connected to the two output ends of the double-end motor; and two moving blocks and two limiting blocks are arranged, the two moving blocks are in threaded connection with the outer portions of the two lead screws, and the two limiting blocks are fixedly connected to the tops of the two moving blocks. According to the utility model, when the drill rod is lowered or lifted, the two arc-shaped limiting plates wrap the two sides of the outer part of the drill rod, so that the drill rod is prevented from shaking or deflecting in the lowering or lifting process, and the construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil well workover technology field especially relates to a kind of electric direct-drive workover rig. BACKGROUND

[0002] Workover rig is a kind of equipment specially used for oil and gas well maintenance operation, it is one of the most commonly used machinery in oilfield site, mainly used to maintain or restore the normal production capacity of oil and gas well, when using, first, workover rig is moved to appropriate position, then, hoist is hauled steel wire rope to drive hanger or forceps, and oil pipe, drill pipe and other pipe column are pulled out or put into wellbore.

[0003] Although the existing workover rig can complete the pipe column pulling out or putting into operation, when hoist puts drill pipe into the inside of oil well, lack of drill pipe limiting structure, drill pipe is prone to sway or swing due to inertia or wind force in the process of lowering and lifting, thereby reducing construction efficiency. UTILITY MODEL CONTENT

[0004] In order to make up for the above shortcomings, the utility model provides a kind of electric direct-drive workover rig, to improve the problem of lacking drill pipe limiting structure in prior art, drill pipe is prone to sway or swing due to inertia or wind force in the process of lowering and lifting.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A kind of electric direct-drive workover rig, comprising:

[0007] Vehicle body;

[0008] Derrick and pulley, the derrick rotationally connected at the top right side of the vehicle body, the pulley is installed at the top of the derrick;

[0009] Mounting plate, the mounting plate is fixedly connected at the right side outside the vehicle body;

[0010] Double-head motor, the double-head motor is arranged at the inside of the mounting plate;

[0011] Two lead screws, two the lead screw is fixedly connected at the two output ends of the double-head motor;

[0012] Two moving blocks and two limit blocks, two the moving block is screwly connected at the outside of two the lead screw, two the limit block is fixedly connected at the top of two the moving block;

[0013] Two installation rods and two arc-shaped limit plates, two the installation rod is fixedly connected at the outside front side of two the moving block, two the arc-shaped limit plate is fixedly connected at the outside of two the installation rod;

[0014] And a stabilizing assembly for fixing the vehicle body.

[0015] Further, the stabilizing assembly comprises extension plates fixedly connected to the outside of the vehicle body, mounting racks fixedly connected to the upper portions of the extension plates, air cylinders fixedly connected to the middle portions of the mounting racks, horizontal plates fixedly connected to the output ends of the air cylinders, connecting rods fixedly connected to the bottom portions of the horizontal plates, fixed plates fixedly connected to the bottom portions of the two connecting rods, and fixed cones fixedly connected to the inside of the fixed plates.

[0016] Further, the vehicle body is fixedly connected with mounting blocks, drive motors are arranged in the middle portions of the mounting blocks, and wire reels are fixedly connected to the output ends of the drive motors.

[0017] Further, a telescopic supporting rod is rotatably connected to the top right side of the vehicle body, and the telescopic supporting rod is rotatably connected to the outside left side of the derrick.

[0018] Further, the mounting plate is fixedly connected with a fixed ring, the double-head motor is fixedly connected to the inside of the fixed ring, limit grooves are formed in the upper portions of the mounting plate, and the two limit blocks are slidably connected to the inside of the two limit grooves.

[0019] Further, the mounting rack is fixedly connected with guide rods on the inside of the mounting rack, the horizontal plate is slidably connected to the outside of the two guide rods, the extension plate is provided with through holes on the inside of the extension plate, and the two connecting rods are slidably connected to the inside of the two through holes.

[0020] Further, the mounting block is fixedly connected with a mounting ring on the inside of the mounting block, and the drive motor is fixedly connected to the inside of the mounting ring.

[0021] Further, the vehicle body is provided with rollers around the outside of the vehicle body.

[0022] The utility model has the advantages of the following beneficial effects:

[0023] 1. In the utility model, the winch vertically hoists the drill pipe to the middle portions of the two arc-shaped limiting plates through the steel wire rope and the lifting clamp, starts the double-head motor to drive the screw rod to rotate, and makes the moving block, the mounting rod and the arc-shaped limiting plate relatively move to cover the two sides of the drill pipe, prevents the drill pipe from shaking or deflecting when being put into the oil well, and improves the construction efficiency.

[0024] 2. In the utility model, the two air cylinders are started to drive the horizontal plate to move downward along the guide rod, push the connecting rod and the fixed plate to descend, make the fixed cone insert into the ground, increase the ground adhesion of the workover rig, and improve the stability of the equipment. DRAWINGS

[0025] Figure 1This is a perspective view of an electric direct-drive well workover rig proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the arc-shaped limiting plate structure of an electric direct-drive well workover rig proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the pulley structure of an electric direct-drive well workover rig proposed in this utility model;

[0028] Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle;

[0029] Figure 5 for Figure 2 Enlarged view of the structure at point B.

[0030] Legend:

[0031] 1. Vehicle body; 2. Roller; 3. Telescopic support rod; 4. Derrick; 5. Pulley; 6. Mounting block; 7. Mounting ring; 8. Drive motor; 9. Winding reel; 10. Mounting plate; 11. Fixing ring; 12. Dual-head motor; 13. Lead screw; 14. Moving block; 15. Limiting block; 16. Limiting groove; 17. Mounting rod; 18. Arc-shaped limiting plate; 19. Extension plate; 20. Mounting bracket; 21. Cylinder; 22. Horizontal plate; 23. Connecting rod; 24. Fixing plate; 25. Fixing cone; 26. Through hole; 27. Guide rod. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1-4This utility model provides an embodiment of an electric direct-drive workover rig, comprising: a vehicle body 1; a derrick 4 and pulleys 5, the derrick 4 being rotatably connected to the top right side of the vehicle body 1, and the pulleys 5 being mounted on the top of the derrick 4; a mounting plate 10, fixedly connected to the outer right side of the vehicle body 1; a dual-head motor 12, the dual-head motor 12 being disposed inside the mounting plate 10; two lead screws 13, the two lead screws 13 being fixedly connected to the two output ends of the dual-head motor 12; two moving blocks 14 and two limiting blocks 15, the two moving blocks 14 being threadedly connected to the outside of the two lead screws 13, and the two limiting blocks 15 being fixedly connected to the top of the two moving blocks 14; two mounting rods 17 and two arc-shaped limiting rods 18. Plate 18, two mounting rods 17 are fixedly connected to the front of the two moving blocks 14, and two arc-shaped limiting plates 18 are fixedly connected to the outside of the two mounting rods 17. The arc-shaped limiting plates 18 serve to limit the drill rod and stabilize the component. The stabilizing component is used to fix the vehicle body 1. A fixing ring 11 is fixedly connected to the middle of the mounting plate 10. The dual-head motor 12 is fixedly connected inside the fixing ring 11. The fixing ring 11 facilitates the fixation of the dual-head motor 12. Limiting grooves 16 are opened on both sides of the upper part of the mounting plate 10. Two limiting blocks 15 are slidably connected inside the two limiting grooves 16. The limiting grooves 16 serve to limit the limiting blocks 15.

[0034] Specifically, during the process of lowering the drill pipe into the oil well using a winch, firstly, the drill pipe is gradually lifted from a horizontal position by pulling the wire rope to maintain a vertical position and align it between the two arc-shaped limiting plates 18. Then, the dual-head motor 12 is started. Two lead screws 13 are fixedly connected to the output end of the dual-head motor 12. As the motor operates, these two lead screws 13 begin to rotate synchronously. Since the lead screws 13 are threadedly connected to the two moving blocks 14, the rotation of the lead screws 13 drives the moving blocks 14 to move relative to each other. A mounting rod 17 is fixedly connected to the front of the two moving blocks 14; therefore, the relative movement of the moving blocks 14 will drive the two... The mounting rods 17 move synchronously relative to each other. Furthermore, two arc-shaped limiting plates 18 are fixed to the outside of the two mounting rods 17. Driven by the mounting rods 17, the arc-shaped limiting plates 18 also move closer to each other and gradually cover the drill pipe located between them. In this way, the two arc-shaped limiting plates 18 can cover the left and right sides of the drill pipe to form a limiting protection structure. At this time, by continuing to operate the winch, the drill pipe can be slowly and stably sent into the oil well. During the entire lowering process, the two arc-shaped limiting plates 18 are always on the outside of the drill pipe, which plays a role in limiting its lateral displacement, thereby avoiding the swaying or deflection of the drill pipe due to inertia or wind force, thus improving the construction efficiency.

[0035] Reference Figures 2-5The stabilizing component includes an extension plate 19, which is fixedly connected to both sides of the exterior of the vehicle body 1. A mounting bracket 20 is fixedly connected to the upper part of the extension plate 19, and a cylinder 21 is fixedly connected to the middle of the mounting bracket 20. A horizontal plate 22 is fixedly connected to the output end of the cylinder 21. Connecting rods 23 are fixedly connected to both sides of the bottom of the horizontal plate 22. A fixing plate 24 is fixedly connected to the bottom of the two connecting rods 23. A fixing cone 25 is fixedly connected to both sides of the interior of the fixing plate 24. Guide rods 27 are fixedly connected to both sides of the interior of the mounting bracket 20. The horizontal plate 22 is slidably connected to the exterior of the two guide rods 27. The guide rods 27 facilitate the movement of the horizontal plate 22. Through holes 26 are provided on both sides of the interior of the extension plate 19. The two connecting rods 23 are slidably connected to the interior of the two through holes 26. The through holes 26 facilitate the movement of the connecting rods 23.

[0036] Specifically, during the construction process, firstly, two cylinders 21 are activated, each with a horizontal plate 22 fixedly connected to its output end. As the cylinders 21 extend downwards, they drive the two connected horizontal plates 22 to move downwards along the outside of four guide rods 27. The guide rods 27 serve to guide and limit movement. As the horizontal plates 22 move downwards, two connecting rods 23 are fixedly connected to their lower sides. The movement of the horizontal plates 22 causes these four connecting rods 23 to slide downwards simultaneously, further transmitting the motion to two fixed plates 24 fixed at the bottom of the connecting rods 23. The fixed plates 24 also move downwards synchronously during the movement, thereby driving the fixed cones 25 installed on both sides inside them to continue to insert downwards into the ground. Once the fixed cones 25 are fully inserted into the soil, the cylinders 21 are closed, forming a stable anchoring effect, thus effectively stabilizing the entire workover rig 1. Through this operation, the equipment has stronger ground adhesion during wellhead operations, improving the stability of the equipment.

[0037] Reference Figures 1-3 A mounting block 6 is fixedly connected to the top of the vehicle body 1. A drive motor 8 is located in the middle of the mounting block 6. A winding reel 9 is fixedly connected to the output end of the drive motor 8. A steel wire rope is wound inside the winding reel 9. The steel wire rope facilitates the lifting operation of the drill pipe. A telescopic support rod 3 is rotatably connected to the top right side of the vehicle body 1. The top of the telescopic support rod 3 is rotatably connected to the outer left side of the derrick 4. The telescopic support rod 3 serves to assist the derrick 4. A mounting ring 7 is fixedly connected inside the mounting block 6. The drive motor 8 is fixedly connected inside the mounting ring 7. The mounting ring 7 facilitates the fixation of the drive motor 8. Rollers 2 are installed around the outer perimeter of the vehicle body 1 to facilitate the movement of the device.

[0038] Working principle: When the winch lowers the drill pipe into the oil well, it first lifts the drill pipe vertically to the middle of the two arc-shaped limiting plates 18 by pulling the wire rope. Then, the double-head motor 12 is started, and the two screws 13 fixed at the output end of the double-head motor 12 rotate. The rotation of the two screws 13 causes the two moving blocks 14 connected to the outer sides to move relative to each other. The relative movement of the two moving blocks 14 causes the two mounting rods 17 fixed to the outer front to move relative to each other. The relative movement of the two mounting rods 17 causes the two arc-shaped limiting plates 18 fixed to the outer sides to move relative to each other. Through the relative movement of the two arc-shaped limiting plates 18, the drill pipe is covered on both sides. At this time, when the drill pipe is lowered or raised into the oil well, the two arc-shaped limiting plates 18 cover the outer sides of the drill pipe, preventing the drill pipe from shaking or deviating during the lowering or raising process, thereby improving the construction efficiency.

[0039] During construction, by activating two cylinders 21, two horizontal plates 22 fixed at the output end move synchronously downward outside the four guide rods 27. As the two horizontal plates 22 move downward, they also move the four connecting rods 23 fixed on both sides of the lower part downward inside the two extension plates 19. Simultaneously, as the four connecting rods 23 move, they also move the two fixed plates 24 fixed at the bottom downward. At the same time, the two fixed plates 24 move synchronously downward with the fixed cones 25 fixed on both sides inside, allowing the fixed cones 25 to insert into the soil. This completes the stabilization operation of the vehicle body 1. When the well workover rig is working, the insertion of multiple fixed cones 25 into the soil enhances the ground adhesion of the well workover rig base and improves the stability of the equipment.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electric direct-drive well workover rig, characterized in that, include: Vehicle body (1); A derrick (4) and a pulley (5), wherein the derrick (4) is rotatably connected to the top right side of the vehicle body (1), and the pulley (5) is mounted on the top of the derrick (4); Mounting plate (10), which is fixedly connected to the outside right side of the vehicle body (1); A dual-head motor (12) is disposed inside the mounting plate (10); Two lead screws (13) are fixedly connected to the two output ends of the dual-head motor (12); Two movable blocks (14) and two limiting blocks (15), the two movable blocks (14) are threaded to the outside of the two lead screws (13), and the two limiting blocks (15) are fixedly connected to the top of the two movable blocks (14); Two mounting rods (17) and two arc-shaped limiting plates (18), the two mounting rods (17) are fixedly connected to the front side of the two moving blocks (14), and the two arc-shaped limiting plates (18) are fixedly connected to the outside of the two mounting rods (17); And a stabilizing component for securing the vehicle body (1).

2. The electric direct-drive workover rig according to claim 1, characterized in that: The stabilizing component includes an extension plate (19) which is fixedly connected to both sides of the exterior of the vehicle body (1). A mounting bracket (20) is fixedly connected to the upper part of the extension plate (19). A cylinder (21) is fixedly connected to the middle part of the mounting bracket (20). A horizontal plate (22) is fixedly connected to the output end of the cylinder (21). Connecting rods (23) are fixedly connected to both sides of the bottom of the horizontal plate (22). A fixing plate (24) is fixedly connected to the bottom of the two connecting rods (23). A fixing cone (25) is fixedly connected to both sides of the interior of the fixing plate (24).

3. The electric direct-drive workover rig according to claim 1, characterized in that: A mounting block (6) is fixedly connected to the top of the vehicle body (1). A drive motor (8) is provided in the middle of the mounting block (6). A winding reel (9) is fixedly connected to the output end of the drive motor (8). A steel wire rope is wound inside the winding reel (9).

4. The electric direct-drive workover rig according to claim 1, characterized in that: The top right side of the vehicle body (1) is rotatably connected to a telescopic support rod (3), and the top of the telescopic support rod (3) is rotatably connected to the outer left side of the derrick (4).

5. The electric direct-drive workover rig according to claim 1, characterized in that: A fixing ring (11) is fixedly connected to the middle of the mounting plate (10), and the dual-head motor (12) is fixedly connected inside the fixing ring (11). Limiting grooves (16) are opened on both sides of the upper part of the mounting plate (10), and two limiting blocks (15) are slidably connected inside the two limiting grooves (16).

6. The electric direct-drive workover rig according to claim 2, characterized in that: The mounting bracket (20) has guide rods (27) fixedly connected to both sides inside. The horizontal plate (22) is slidably connected to the outside of the two guide rods (27). The extension plate (19) has through holes (26) on both sides inside. The two connecting rods (23) are slidably connected to the inside of the two through holes (26).

7. The electric direct-drive workover rig according to claim 3, characterized in that: The mounting block (6) has a mounting ring (7) fixedly connected inside, and the drive motor (8) is fixedly connected inside the mounting ring (7).

8. The electric direct-drive workover rig according to claim 1, characterized in that: The vehicle body (1) is equipped with rollers (2) on all four sides of its exterior.

Images