Multifunctional power catwalk for well repair operation

Abstract

The application discloses a multifunctional well repairing operation power catwalk, which comprises a catwalk base, pipe column moving mechanisms are arranged on opposite sides of the catwalk base, support assemblies A and B are arranged between the two groups of pipe column moving mechanisms, one end of the support assembly A is connected with an extendable drill string feeding assembly, the other end of the extendable drill string feeding assembly is connected with the support assembly B, and square drill rod moving and transporting devices are arranged at opposite ends of the catwalk base. The application can process oil pipes, drill rods, pumping rods and square drill rods with water taps and roller core filling, and can discharge and store the transported pipe columns.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of oil drilling and workover equipment, and relates to a multifunctional workover operation power catwalk. BACKGROUND

[0002] Land oil drilling pipe column automation has been a development trend in recent years, and workover rig supporting pipe column automation is also increasingly valued. Mechanization and automation of workover operations are the development direction of workover equipment, and pipe column handling equipment with good safety and high automatic control level is increasingly favored by oilfield users.

[0003] Different pipe columns need to be tripped and discharged during workover operations, which is labor-intensive. In recent years, workover operation pipe rod conveyors have been researched at home and abroad, and have initially formed a scale and have practical applications in oilfield workover operations. The existing workover operation pipe rod conveyors have the following shortcomings: 1) single function, the existing pipe rod conveyors can only convey conventional pipe columns such as oil pipes and drill pipes, and cannot handle unconventional pipe tools such as sucker rods, water taps and square drill pipes with roller core; 2) the existing pipe rod conveyors mostly use pipe tool rolling during pipe column transfer, and the pipe column is dragged and slid in a V-shaped groove, which has large impact and noise during the transfer process, and has certain damage to the pipe column itself, and the whole process has many uncontrollable factors and safety hazards; 3) the existing pipe rod conveyors cannot discharge pipe columns, and need to increase equipment or use manual methods for ground pipe discharge processing, which has low automation degree; 4) the V-shaped groove cannot reach the wellhead position, and the pipe column needs to be manually pushed and supported into the V-shaped groove, which is labor-intensive. SUMMARY

[0004] The purpose of the present application is to provide a multifunctional workover operation power catwalk, which can handle oil pipes, drill pipes, sucker rods and square drill pipes with water taps and roller cores, and can discharge and store the conveyed pipe columns.

[0005] The technical solution adopted by the present application is a multifunctional workover operation power catwalk, which comprises a catwalk base, pipe column moving mechanisms are arranged on opposite sides of the catwalk base, support assemblies A and B are arranged between the two groups of pipe column moving mechanisms, one end of the support assembly A is connected with a telescopic drill string assembly, the other end of the telescopic drill string assembly is connected with the support assembly B, and square drill rod conveying devices are arranged at opposite ends of the catwalk base.

[0006] The present application has the following characteristics:

[0007] The outer sides of the two pipe column moving mechanisms are each provided with a pipe column storage box.

[0008] The support assembly A comprises a support I, one end of the support I is hinged to the catwalk base, the other end of the support I is hinged to one end of a telescopic drill string assembly, and the other end of the support II is hinged to the other end of the telescopic drill string assembly.

[0009] The lifting hydraulic cylinder I is further included, the cylinder body of the lifting hydraulic cylinder I is connected to the support I, and the piston rod end of the lifting hydraulic cylinder I is connected to the support II.

[0010] The support assembly B comprises a support III, one end of the support III is hinged to the catwalk base, and the other end of the support III is hinged to the other end of the telescopic drill string assembly.

[0011] The swing cylinder I is further included, the cylinder body of the swing cylinder I is hinged to the catwalk base, and the piston rod of the swing cylinder I is hinged to the support III.

[0012] The pipe string moving mechanism comprises a horizontally arranged electromagnet mounting frame, two ends of the electromagnet mounting frame are respectively provided with a mechanical arm, and at least two electric permanent magnets are arranged on the electromagnet mounting frame.

[0013] The mechanical arm comprises a cantilever frame, the cantilever frame is connected to the catwalk base through a pin shaft; one end of a swing arm is hinged to the cantilever frame, the other end of the swing arm is hinged to a telescopic arm, the cylinder body of a swing cylinder is connected to the cantilever frame, and the piston rod of the swing cylinder is hinged to the swing arm; the swing arm drives the telescopic arm to swing left and right under the action of the swing cylinder; a telescopic cylinder is arranged on the telescopic arm, the cylinder body of the telescopic cylinder is connected to the telescopic arm, and the piston rod end of the telescopic cylinder is connected to the electromagnet mounting frame.

[0014] The telescopic drill string assembly comprises a sliding rail frame, a drill string frame body is arranged above the sliding rail frame, a reciprocating drive oil cylinder is arranged at the bottom of the drill string frame body, the piston rod of the reciprocating drive oil cylinder is connected to the bottom of the drill string frame body, and the cylinder body of the reciprocating drive oil cylinder is fixed to the sliding rail frame; a sliding trolley is connected to the drill string frame body through a chain drive assembly; and a detachable kelly support frame is arranged at one end of the drill string frame body.

[0015] The beneficial effects of the present application are as follows:

[0016] 1. The present application has the functions of transporting and discharging pipe strings simultaneously, and is matched with a pipe string storage box, so that the pipe strings can be effectively arranged, and the labor intensity of ground pipe discharge area is reduced.

[0017] 2. The present application is suitable for a large number of pipe tools and has a wide range of pipe tool adaptation. In addition to being capable of handling conventional oil pipes and drill pipes, the present application is also suitable for special pipe tools, such as sucker rods, square drill pipes with water taps and roller core filling.

[0018] 3. Unlike traditional automatic pipe rod transporters, the present application is equipped with a power trolley, which can effectively prevent the phenomenon of poor pipe string sliding caused by jamming, and can effectively protect the pipe string joint thread.

[0019] 4. The present application can push the drill string assembly through the wellhead, ensuring that the pipe string can be lowered onto the drill string assembly at the wellhead position without manual pushing, reducing the labor intensity of the workover platform;

[0020] 5. The present application adopts the working mode of electromagnetic lifting, and the pipe string moving process runs smoothly and reliably, with small impact and high safety. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of a multifunctional workover operation power catwalk of the present application;

[0022] Figure 2 is a structural schematic diagram of a pipe string moving mechanism in a multifunctional workover operation power catwalk of the present application;

[0023] Figure 3 is a structural schematic diagram of a mechanical arm in a pipe string moving mechanism of a multifunctional workover operation power catwalk of the present application;

[0024] Figure 4 is a structural schematic diagram of a telescopic drill string assembly in a multifunctional workover operation power catwalk of the present application;

[0025] Figure 5 is a bottom structural schematic diagram of a drill string assembly frame body and slide rail cooperation in a multifunctional workover operation power catwalk of the present application;

[0026] Figure 6 is a structural schematic diagram of a sliding trolley in a multifunctional workover operation power catwalk of the present application;

[0027] Figure 7 is a structural schematic diagram of a limiting block on a sliding trolley in a multifunctional workover operation power catwalk of the present application;

[0028] Figure 8 is a schematic diagram of the initial state of the transport of a kelly containing a swivel and a roller core supplement using a multifunctional workover operation power catwalk of the present application;

[0029] Figure 9 is a schematic diagram of the process state of the transport of a kelly containing a swivel and a roller core supplement using a multifunctional workover operation power catwalk of the present application;

[0030] Figure 10 is a schematic diagram of the final state of the transport of a kelly containing a swivel and a roller core supplement using a multifunctional workover operation power catwalk of the present application;

[0031] Figure 11 is a schematic diagram of the state of the transport of a tubing using a multifunctional workover operation power catwalk of the present application.

[0032] In the diagram, 1. Tube storage box, 2. Catwalk base;

[0033] 3. Pipe column moving mechanism; 3-3. Electromagnet mounting bracket; 3-4. Electro-permanent magnet; 3-5. Cantilever frame; 3-6. Swing arm; 3-7. Telescopic arm; 3-8. Swing cylinder; 3-9. Telescopic cylinder;

[0034] 4. Telescopic drill string assembly, 4-1. Drill string frame, 4-2. Slide rail;

[0035] 4-3. Sliding trolley; 4-3-1. Sliding drill rod support frame; 4-3-2. Roller mandrel support plate; 4-3-3. Guide groove; 4-3-4. Limiting block;

[0036] 4-4. Chain drive assembly; 4-5. Square drill pipe support frame; 4-6. Reciprocating drive cylinder; 4-7. Guide slide rail;

[0037] 5. Bracket assembly A, 5-1. Bracket I, 5-2. Bracket II, 5-3. Lifting hydraulic cylinder I;

[0038] 6. Bracket assembly B, 6-1. Bracket III, 6-2. Swing cylinder I;

[0039] 7. Square drill pipe moving device, 7-1. Telescopic cylinder, 7-2. Lifting cylinder,

[0040] 8. Moving guide groove; 9. Square drill rod containing faucet and roller mandrel; 10. Oil pipe. Detailed Implementation

[0041] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0042] This invention provides a multifunctional power catwalk for well workover operations, such as... Figure 1 As shown, the system includes a catwalk base 2, with a pipe column moving mechanism 3 on each of its opposite sides. A support assembly A5 and a support assembly B6 are respectively located between the two sets of pipe column moving mechanisms 3. Support assembly A5 is connected to one end of a telescopic drill string assembly 4, and the other end of the telescopic drill string assembly 4 is connected to support assembly B6. Square drill rod transport devices 7 are respectively located at both opposite ends of the catwalk base 2. A pipe column storage box 1 is provided on the outer side of each pipe column moving mechanism 3.

[0043] The support assembly A5 includes support I5-1, one end of which is hinged to the catwalk base 2, and the other end of support I5-1 is hinged to one end of support II5-2, and the other end of support II5-2 is hinged to one end of the telescopic drill string assembly 4; it also includes a lifting hydraulic cylinder I5-3, the cylinder body of which is connected to support I5-1, and the piston rod end of lifting hydraulic cylinder I5-3 is connected to support II5-2.

[0044] The support assembly B6 includes a support III 6-1, one end of the support III 6-1 is hinged to the catwalk base 2, the other end of the support III 6-1 is hinged to the other end of the telescopic drill string column assembly 4; further includes a swing cylinder I 6-2, the cylinder body of the swing cylinder I 6-2 is hinged to the catwalk base 2, the piston rod of the swing cylinder I 6-2 is hinged to the support III 6-1.

[0045] As shown in Figure 2 , the pipe column moving mechanism 3 includes a horizontally arranged electromagnet mounting rack 3-3, both ends of the electromagnet mounting rack 3-3 are respectively provided with a mechanical arm, and at least two electric permanent magnets 3-4 are arranged on the electromagnet mounting rack 3-3.

[0046] As shown in Figure 3 , the mechanical arm includes a cantilever rack 3-5, a swing arm 3-6, a telescopic arm 3-7, a swing cylinder 3-8 and a telescopic cylinder 3-9, the cantilever rack 3-5 is connected to the catwalk base 2 through a pin shaft; one end of the swing arm 3-6 is hinged to the cantilever rack 3-5, the other end of the swing arm 3-6 is hinged to the telescopic arm 3-7, the cylinder body of the swing cylinder 3-8 is connected to the cantilever rack 3-5, and the piston rod of the swing cylinder 3-8 is hinged to the swing arm 3-6; the telescopic arm 3-7 swings left and right under the action of the swing arm 3-6 and the swing cylinder 3-8; the telescopic cylinder 3-9 is arranged on the telescopic arm 3-7, the cylinder body of the telescopic cylinder 3-9 is connected to the telescopic arm 3-7, and the end of the piston rod of the telescopic cylinder 3-9 is connected to the electromagnet mounting rack 3-3.

[0047] As shown in Figure 4 , 5 , the telescopic drill string column assembly 4 includes a slide rail rack 4-2, both ends of the bottom of the slide rail rack 4-2 are respectively hinged to the support II 5-2 and the support III 6-1; a drill string column rack body 4-1 is arranged above the slide rail 4-2, the bottom of the drill string column rack body 4-1 is provided with a reciprocating drive oil cylinder 4-6, the piston rod of the reciprocating drive oil cylinder 4-6 is connected to the bottom of the drill string column rack body 4-1, and the cylinder body of the reciprocating drive oil cylinder 4-6 is fixed on the slide rail 4-2; a sliding trolley 4-3 is connected to the drill string column rack body 4-1 through a chain drive assembly 4-4; a kelly bar support rack 4-5 is arranged at one end of the drill string column rack body 4-1.

[0048] As shown in Figure 4 , the chain drive assembly 4-4 is arranged on one side of the drill string column rack body 4-1, and the sliding trolley 4-3 is driven by the chain drive assembly 4-4 to move back and forth on the drill string column rack body 4-1;

[0049] The chain drive assembly 4-4 includes a driving sprocket, the driving sprocket is connected to a driven sprocket through a chain, and the driving sprocket is driven by a motor; the chain is connected to the sliding trolley 4-3;

[0050] AsFigure 6 、 7 As shown in the figure, the sliding trolley 4-3 comprises a sliding drill rod support frame 4-3-1, one side of the sliding drill rod support frame 4-3-1 is provided with a roller core supporting plate 4-3-2, and the opposite ends of the other side of the sliding drill rod support frame 4-3-1 are respectively provided with two guide sliding grooves 4-3-3, and the two guide sliding grooves 4-3-3 are respectively matched with two guide sliding rails 4-7 arranged on the upper surface of the drill string rack body 4-1; the bottom of one of the guide sliding grooves 4-3-3 is respectively provided with two limit blocks 4-3-4, and the two limit blocks 4-3-4 limit the sliding trolley 4-3 in the left-right direction; the two guide sliding grooves 4-3-3 and the guide sliding rails 4-7 limit the sliding trolley 4-3 in the up-down direction.

[0051] As shown in the figure, Figure 8 The opposite ends of the catwalk base 2 are respectively provided with moving guide grooves 8, and the kelly bar moving device 7 comprises a telescopic cylinder 7-1, the telescopic cylinder 7-1 is provided with a lifting cylinder 7-2, the bottom of the telescopic cylinder 7-1 is in the moving guide groove 8, and an offset cylinder is arranged in the catwalk base 2; the cylinder body of the offset cylinder is fixed on the catwalk base 2, the piston rod of the offset cylinder is connected with the telescopic cylinder 7-1, and the offset cylinder can drive the telescopic cylinder 7-1 to move transversely in the moving guide groove 8.

[0052] The flow of the multifunctional workover operation power catwalk for processing the tubular column such as the kelly bar 9 and the oil pipe 10 (the oil pipe 10 can be replaced by a drill rod and a sucker rod) containing a faucet and a roller core is as follows:

[0053] As shown in the figure, Figure 9 、 10 The conveying operation process of the kelly bar 9 containing the faucet and the roller core is divided into the following three steps:

[0054] Firstly, the lifting cylinder 7-1 of the kelly bar moving device 7 is extended, and after the kelly bar 9 containing the faucet and the roller core is lifted to a certain height, the offset cylinder is retracted, the kelly bar 9 containing the faucet and the roller core is moved to the upper side of the telescopic drill string assembly 4, then the lifting cylinder 7-2 in the kelly bar moving device 7 is retracted, the kelly bar 9 containing the faucet and the roller core falls onto the small trolley 4-3 and the drill rod support frame 4-5, and the moving process of the kelly bar 9 containing the faucet and the roller core from the initial position to the telescopic drill string assembly 4 is completed;

[0055] Secondly, the telescopic drill string assembly 4 is lifted to the drilling platform surface height by the support assembly A 5 and the support assembly B 6, and the front end is sent to the center of the drilling platform surface wellhead;

[0056] The third step involves the traveling hoist system lifting the swivel head, moving the small pulley 4-3 to the vicinity of the wellhead until the square drill pipe 9 containing the swivel head and roller manifold is completely vertical, thus completing the transport operation of the square drill pipe 9 containing the swivel head and roller manifold.

[0057] The drilling operation of the square drill rod 9, which includes a water tap and roller mandrel, is the reverse of the above process.

[0058] like Figure 11 As shown, Figure 11 Although the image shows oil delivery via pipe 10, other methods besides pipe 10 can also be used. Figure 11 The drill pipe and sucker rod are transported in the following manner. During transport, the drill pipe support frame 4-5 (which is bolted to the drill string frame 4-1) needs to be removed. The specific transport process can be divided into the following three steps:

[0059] In the first step, the swing cylinders 3-8 on the two robotic arms of the pipe column moving mechanism 3 extend simultaneously, driving the telescopic arm 3-7 to swing above the target pipe column in the pipe column storage box 1. The telescopic cylinder 3-9 extends synchronously, and the telescopic arm 3-7 drives the electro-permanent magnet 3-4 to move downward until it contacts the surface of the pipe column to be retrieved (the pipe column to be retrieved is placed in the pipe column storage box 1). The electro-permanent magnet 3-4 is energized and attracted to the target pipe column. The telescopic cylinder 3-9 retracts to its shortest position, and then the swing cylinder 3-8 retracts. The swing arm 3-6 drives the pipe column to swing directly above the telescopic drill string assembly 4. The telescopic cylinder 3-9 extends and lowers the pipe column onto the telescopic drill string assembly 4. The electro-permanent magnet 3-4 is energized and demagnetized, completing the transfer of the pipe column from the pipe column storage box 1 to the telescopic drill string assembly 4.

[0060] The second step is to lift the telescopic drill string assembly 4 to the height of the drilling platform using the support assembly A5 and the support assembly B6, and send the front section to the vicinity of the wellhead center on the drilling platform.

[0061] The third step is to engage the clamps to hook the tubing string and lift it up, then move the small pulley 4-3 to the vicinity of the wellhead until the tubing string is completely vertical, thus completing the transport of drill pipe, tubing 10 and sucker rod.

[0062] The drilling operation involving the drill pipe, tubing 10, and sucker rod is the reverse of the above process.

[0063] The two sets of pipe column moving mechanisms 3 are used in conjunction with the two pipe column storage boxes 1. The purpose of setting up two pipe column storage boxes 1 is to place more pipe columns next to this device for use during operation. The two sets of pipe column moving mechanisms 3 are used nearby, and only one set of pipe column moving mechanisms 3 is used when lifting pipe columns from the nearby pipe column storage box 1.

Claims

1. A multi-functional power catwalk for well workover operations, characterized in that: The system includes a catwalk base, with a pipe column moving mechanism on each of the opposite sides of the catwalk base. A support assembly A and a support assembly B are respectively located between the two sets of pipe column moving mechanisms. Support assembly A is connected to one end of the telescopic drill string assembly, and the other end of the telescopic drill string assembly is connected to support assembly B. A square drill rod transfer device is provided at each of the opposite ends of the catwalk base. Both of the aforementioned column moving mechanisms are provided with column storage boxes on their outer sides; The column moving mechanism includes a horizontally arranged electromagnet mounting frame, with mechanical arms at both ends of the electromagnet mounting frame, and at least two electro-permanent magnets on the electromagnet mounting frame. The robotic arm includes a cantilever frame, which is connected to the catwalk base by a pin; one end of the swing arm is hinged to the cantilever frame, and the other end of the swing arm is hinged to the telescopic arm; the cylinder body of the swing cylinder is connected to the cantilever frame, and the piston rod of the swing cylinder is hinged to the swing arm; the swing arm swings left and right under the action of the swing cylinder; the telescopic arm is equipped with a telescopic cylinder, the cylinder body of the telescopic cylinder is connected to the telescopic arm, and the end of the piston rod of the telescopic cylinder is connected to the electromagnet mounting bracket. The telescopic drill string assembly includes a slide rail frame, a drill string frame body is provided above the slide rail frame, a reciprocating drive cylinder is provided at the bottom of the drill string frame body, the piston rod of the reciprocating drive cylinder is connected to the bottom of the drill string frame body, and the cylinder body of the reciprocating drive cylinder is fixed on the slide rail frame; a sliding trolley is connected to the drill string frame body through a chain drive assembly; a square drill rod support frame is provided at one end of the drill string frame body.

2. The multifunctional well workover operation power catwalk according to claim 1, characterized in that: The support assembly A includes a support I, one end of which is hinged to the catwalk base, the other end of which is hinged to one end of a support II, and the other end of the support II is hinged to one end of the telescopic drill string assembly. It also includes a lifting hydraulic cylinder I, the cylinder body of which is connected to bracket I, and the piston rod end of the lifting hydraulic cylinder I is connected to bracket II.

3. The multifunctional well workover operation power catwalk according to claim 2, characterized in that: The support assembly B includes a support III, one end of which is hinged to the catwalk base, and the other end of which is hinged to the other end of the telescopic drill string assembly. It also includes a swing cylinder I, the cylinder body of which is hinged to the cat walkway base, and the piston rod of the swing cylinder I is hinged to the bracket III.

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