A pipe laying device and pipe rod laying and conveying equipment for oil field well repair

Abstract

The invention discloses a pipe laying device and pipe-rod pipe laying and conveying equipment for oilfield well repair, and relates to the technical field of oilfield well repair equipment. The pipe-rod pipe laying and conveying equipment comprises a pipe laying device and a conveyor. The pipe laying device comprises at least two groups of power cross arm assemblies arranged side by side. The power cross arm assembly comprises a cross arm support and two parallel push rods. The cross arm support is a T-shaped structure, and push rods are installed on both sides of its vertical ribs; a plurality of push plates arranged at equal intervals are provided on the push rod, and one end of each push plate is connected to a driving cylinder fixed to the cross arm support; the conveyor comprises a frame, a side beam and an extension beam, the side beam is vertically slidably mounted on the frame, and is connected to a lifting mechanism; the extension beam is horizontally slidably mounted on the side beam, and a roller is installed on the side of the side beam; when the roller rises to the output end of the pipe laying device, the roller lifts the oil pipe to enter the next process; the pipe laying device and the conveyor in the equipment are used in combination, and the mechanical structures of the two are simple, and are easy to be widely promoted and applied in well repair automation operations.

Description

Technical Field

[0001] The invention relates to the technical field of oilfield well repair equipment, and in particular to a pipe laying device and a pipe rod laying and conveying equipment for oilfield well repair. Background Art

[0002] During the oilfield workover operation, the pipes and rods pulled out from the well must be neatly arranged in order on the well site, and when lowering the pipes and rods, they must be lowered into the well one by one in the reverse order.

[0003] There are many ways to lay pipes at a well site, such as manual, simple mechanical, and automated control mechanical. Manual pipe laying has high labor intensity and is prone to personal accidents. Simple mechanical pipe laying relies on the gravity of the pipe rod to roll, which can reduce some labor intensity, but has poor controllability and a limited number of pipes to be laid, and is rarely used on oil field sites. Chinese patent CN105672913A discloses a pipe laying device for oil well repair, which is essentially a small CNC bridge crane. The electromagnet grabs the pipe rod and moves in the X, Y, and Z directions to lay the pipe.

[0004] In addition, the conveyor is a channel for transferring pipe rods between the workover platform and the pipe laying device. Both the traditional power catwalk and the current automated conveyor have not deviated from the slope state of the original catwalk. This inclined cantilever structure represented by patent CN110295858A "A tubing slideway device for automated well workover" requires another device or device to transport the pipe rods to the slideway, and then the pipe rods can be sent to the predetermined position after the clamps are clamped, the main body is lifted, the slideway is extended, and the trolley moves forward, etc., requiring multiple sets of mechanical structures and drive controls.

[0005] Although the existing pipe laying machines and conveyors have achieved automatic control, saving manpower and labor intensity, due to the complex mechanical structure and control system of this type of equipment, the reliability and maintainability in the field well site environment are not satisfactory, affecting the operating efficiency; and the high cost is not conducive to promotion and application.

[0006] In summary, there is an urgent need to develop a pipe-rod arrangement and conveying equipment for oilfield well repair that has a simple structure, reliable operation, low cost and high efficiency. Summary of the invention

[0007] The purpose of the present invention is to provide a pipe laying device and a pipe rod laying and conveying equipment for oil field well repair in view of the defects in the prior art.

[0008] The technical solution of the present invention is: a pipe arrangement device, comprising at least two groups of power cross arm assemblies arranged side by side, the power cross arm assemblies comprising a cross arm support and two parallel push rods, the cross arm support is a T-shaped structure, and push rods are installed on both sides of its vertical ribs;

[0009] The push rod is provided with multiple push plates arranged at equal intervals, one end of which is connected to a driving cylinder fixed on the cross arm support; the distance between two adjacent push plates is a step distance, which is larger than the diameter of the pipe rod; the driving cylinder includes a linear reciprocating cylinder, a swing cylinder and a connecting shell. When the swing cylinder drives the push plate of the push rod on one side to fall down, the push plate of the push rod on the other side drives the pipe rod to move forward and backward under the drive of the linear reciprocating cylinder.

[0010] Preferably, the linear reciprocating cylinder is connected to the swing cylinder through a connecting shell, a first piston rod is slidably installed in the linear reciprocating cylinder, and a second piston rod is rotatably installed in the swing cylinder; a piston is mounted on the first piston rod, the left end of which is connected to the push rod, and the right end is a hollow shaft with a sliding key, and the depth of the axial hole is greater than the step distance; a blade is installed on the second piston rod, and an axial sliding key groove is provided on the side wall of the extended end of the blade, the length of the sliding key groove is greater than or equal to the step distance and less than the depth of the axial hole at the right end of the first piston rod; the extended end of the second piston rod is slidably inserted into the axial hole at the right end of the first piston rod through the cooperation of the sliding key groove and the sliding key.

[0011] Preferably, the push plate has a width less than or equal to the outer diameter of the push rod, and a height less than the diameter of the pipe rod and greater than or equal to the radius of the pipe rod.

[0012] A pipe rod arrangement and conveying device for oilfield well repair, comprising a pipe arrangement device and a conveyor;

[0013] The conveyor is located on one side of the pipe laying device, and includes a frame, a side beam and an extension beam; the side beam is vertically slidably installed on the frame and is connected to a lifting mechanism; the extension beam is horizontally slidably installed on the side beam and is connected to a reciprocating mechanism, and a roller for receiving pipe rods is installed on its side; when the roller rises to the output end of the pipe laying device, the roller lifts the oil pipe to enter the next process.

[0014] Preferably, multiple layers of the pipe arrangement device form a pipe stack.

[0015] Preferably, the lifting mechanism comprises a pulley and a winch, the pulley is mounted on the top of the frame, the winch is fixed on the other side of the frame, and its traction rope passes around the pulley and is fixedly connected to the top of the side beam.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] The pipe laying device and conveyor in this equipment are used in combination. The mechanical structures of the two are simple, the cost is low, and they are easy to be widely promoted and applied. The pipe laying device has few control links and only has two actions: forward and backward, and swinging. It runs safely, reliably, and efficiently, and can meet the requirements of high-efficiency operations. The side beam structure of the conveyor can directly store and retrieve pipe rods from the multi-layer pipe row without the need for additional equipment or loading and unloading devices. The conveyor can transport the pipe rods to the specified position in two steps, with high operating efficiency, which can meet the needs of fast operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the front view of the pipe arrangement device;

[0019] Figure 2 for Figure 1 A cross-sectional view of the middle drive cylinder;

[0020] Figure 3 It is a top view of the pipe arrangement;

[0021] Figure 4 This is a schematic diagram of the push plate in the state of left flat and right straight;

[0022] Figure 5 This is a schematic diagram of the push plate in the state of left straight and right flat;

[0023] Figure 6 is a schematic diagram of a pipe stack;

[0024] Figure 7 It is a schematic diagram of the overall structure of the pipe rod arrangement and transportation equipment;

[0025] Figure 8 for Figure 7 Left view of the middle conveyor (with the extended beam retracted);

[0026] Fig. 9 for Figure 7 Left view of the conveyor in the middle (with the extension beam extended).

[0027] In the figure: 1. cross arm support, 2. push rod, 3. push plate, 4. linear reciprocating cylinder, 5. connecting shell, 6. swing cylinder, 7. first piston rod, 8. second piston rod, 801. keyway, 9. piston, 10. key, 11. blade, 12. pipe rod, 13. frame, 14. side beam, 15. extending beam, 16. roller, 17. pulley, 18. winch. DETAILED DESCRIPTION

[0028] The present invention is further described below with reference to the accompanying drawings and embodiments. Embodiment 1

[0029] Reference Figure 1-3 As shown, a pipe laying and conveying equipment with a pipe rod 12 for oilfield well repairing includes a pipe laying device and a conveyor. The pipe laying device includes at least two sets of power cross arm assemblies arranged side by side. The power cross arm assembly includes a cross arm support 1 and two parallel push rods 2. The cross arm support 1 is a T-shaped structure, and push rods 2 are installed on both sides of its vertical ribs.

[0030] The push rod 2 is provided with a plurality of push plates 3 arranged at equal intervals, one end of which is connected to a driving cylinder fixed on the cross arm support 1; the width of the push plate 3 is less than or equal to the outer diameter of the push rod 2, and the height is less than the diameter of the pipe rod 12 and greater than or equal to the radius of the pipe rod 12; the distance between two adjacent push plates 3 is a step distance, which is greater than the diameter of the pipe rod 12. The driving cylinder includes a linear reciprocating cylinder 4, a swing cylinder 6 and a connecting shell 5. The linear reciprocating cylinder 4 is connected to the swing cylinder 6 through the connecting shell 5. A first piston rod 7 is slidably installed in the linear reciprocating cylinder 4, and a second piston rod 8 is rotatably installed in the swing cylinder 6; a piston 9 is mounted on the first piston rod 7, the left end of which is connected to the push rod 2, and the right end is a hollow shaft with a sliding key 10, and the depth of the shaft hole is greater than the step distance; a blade 11 is installed on the second piston rod 8, and an axial sliding key groove 801 is opened on the side wall of the extended end thereof, and the length of the sliding key groove 801 is greater than or equal to the step distance and less than the depth of the shaft hole at the right end of the first piston rod 7; the extended end of the second piston rod 8 is slidably inserted into the shaft hole at the right end of the first piston rod 7 through the cooperation of the sliding key groove 801 and the sliding key 10.

[0031] When the piston 9 moves to the left, the first piston rod 7 slides on the second piston rod 8, and the swing cylinder 6 and the second piston rod 8 remain stationary. When the swing cylinder 6 rotates and swings, the second piston rod 8 drives the first piston rod 7 of the reciprocating cylinder to rotate 90 degrees through the sliding key 10, thereby driving the push rod 2 to rotate and swing 90 degrees.

[0032] More detailed, such as Figure 6 As shown, a multi-layer pipe arrangement device forms a pipe stack, which can be used for pipe arrangement in oil wells of different depths.

[0033] according to Figure 3-5 Explain its working steps, taking the following pipe operation as an example:

[0034] Initial state see Figure 4 The push plate 3 of the left push rod 2 is in a horizontal state and does not contact the pipe rod 12. The push plate 3 of the right push rod 2 is in a vertical state, playing a role in positioning and supporting the pipe rod 12. The initial position is referred to as left flat and right straight according to the position of the push plate 3. The pistons 9 of the left and right linear reciprocating cylinders 4 are both on the right.

[0035] a. The piston 9 of the right linear reciprocating cylinder 4 moves from right to left, pushing the right push rod 2 forward by one step, and the pipe rod 12 moves forward by one step accordingly. The front pipe rod 12 enters the output end of the pipe arrangement device and is taken away by the conveyor;

[0036] b. The left swing cylinder 6 rotates 90 degrees clockwise, the left push rod 2 rotates 90 degrees clockwise, and the left push plate 3 changes from a horizontal state to a vertical state, playing a role in positioning and supporting the pipe rod 12; preparations are made for the next cycle.

[0037] c. The right swing cylinder 6 rotates 90 degrees clockwise, the right push rod 2 rotates 90 degrees clockwise, and the right push plate 3 changes from a vertical state to a horizontal state;

[0038] d. The piston 9 of the right linear reciprocating cylinder 4 moves from left to right, and the right push rod 2 retreats one step and returns to its original position. At this time, after the pipe rod 12 moves forward one step, it becomes Figure 5 The left is straight and the right is flat;

[0039] The second cycle, see Figure 5

[0040] e. The piston 9 of the left linear reciprocating cylinder 4 moves from right to left, pushing the left push rod 2 forward by one step, and the pipe rods 12 move forward by one step accordingly. The front pipe rod 12 enters the output end of the pipe arrangement device and is taken away by the conveyor;

[0041] f. The right swing cylinder 6 rotates 90 degrees counterclockwise, the right push rod 2 rotates 90 degrees counterclockwise, and the right push plate 3 changes from a horizontal state to a vertical state, playing a role in positioning and supporting the pipe rod 12; preparing for the next cycle.

[0042] g. The left swing cylinder 6 rotates 90 degrees counterclockwise, the left push rod 2 rotates 90 degrees counterclockwise, and the left push plate 3 changes from a vertical state to a horizontal state;

[0043] h. The piston 9 of the left linear reciprocating cylinder 4 moves from left to right, and the left push rod 2 retreats a step distance P and returns to its original position. At this time, the pipe rod 12 moves forward a step distance and becomes Figure 4 The left is flat and the right is straight.

[0044] The first cycle of ad process Figure 4 Became Figure 5 , the process of the second cycle eh is composed of Figure 5 Back to Figure 4 .

[0045] During the pipe lifting operation, the piston 9 of the left linear reciprocating cylinder 4 is on the right, the piston 9 of the right linear reciprocating cylinder 4 is on the left, the push plate 3 is in a left flat and right straight state, the pipe rod 12 comes from the conveyor direction, and the push rod 2 linearly pushes the pipe rod 12 to move in the direction of the driving cylinder, which is the same as the above steps but in the opposite direction. The pipe lifting process will not be repeated.

[0046] Reference Figure 6-9 As shown, the conveyor is located at one side of the pipe laying device, and includes a frame 13, a side beam 14 and an extension beam 15; the side beam 14 is vertically slidably installed on the frame 13, and is connected to a lifting mechanism; the extension beam 15 is horizontally slidably installed on the side beam 14, and is connected to a reciprocating mechanism, and a roller 16 for receiving the pipe rod 12 is installed on its side; when the pipe is lowered, when the roller 16 rises to the output end of the pipe laying device, the roller 16 lifts the oil pipe to enter the next process; the pipe lifting operation is opposite to the pipe lowering operation process.

[0047] Process of sending out pipe rod 12 (lowering pipe rod 12):

[0048] Initial position: the extending beam 15 is in a retracted state, and the roller 16 stays below the output end of the pipe laying device.

[0049] The pipe laying device steps forward once, and the frontmost pipe rod 12 enters the output end of the pipe laying device. The side beam 14 rises under the drive of the lifting mechanism, and drives the roller 16 to lift the pipe rod 12 at the output end of the pipe laying device and stops after reaching the specified height (the height required by the well repair platform).

[0050] The extension beam 15 is driven by the reciprocating mechanism to move rightward and extend to a specified distance. At this time, the pipe end reaches a predetermined position on the well repair platform, and then the lifting equipment starts to lift the pipe rod 12.

[0051] After the lifting is completed, the extended beam 15 is retracted, and the side beam 14 is reset to make the roller 16 return to the bottom of the output end of the pipe laying device to transport the next pipe rod 12.

[0052] Process of recovering pipe rod 12 (lifting pipe rod 12):

[0053] Initial position: the side beam 14 is at a specified height, and the right end of the extended beam 15 is close to the wellhead.

[0054] When the lifting equipment lowers the pipe rod 12 vertically and the pipe end contacts the extension beam 15, the extension beam 15 moves leftward, driving the pipe rod 12 to move leftward, and the extension beam 15 continues to move leftward to a specified position. After the pipe rod 12 is laid flat, the extension beam 15 retracts to its original position.

[0055] The side beam 14 descends vertically, driving the roller 16 to reach above the input end of the pipe laying device. At this time, the front position of the pipe laying device is empty. The side beam 14 descends, and the pipe rod 12 is placed on the pipe laying device. The pipe laying device steps backward once, and the side beam 14 rises back to its original position. The extended beam 15 moves right close to the wellhead, waiting for the next pipe rod 12.

[0056] The pipe laying device and the conveyor in the equipment are used in combination, and the mechanical structures of the two are simple, the cost is low, and they are easy to be widely promoted and applied; the pipe laying device has fewer control links, and only has two actions, namely, forward and backward, and swinging, and the operation is safe, reliable, and efficient, which can meet the requirements of high-efficiency operation; the side beam 14 structure of the conveyor directly stores and retrieves the pipe rods 12 from the multi-layer pipe row, and no additional equipment or loading and unloading devices are required; the conveyor can transport the pipe rods 12 to the specified position in two steps, and the operation efficiency is high, which can meet the needs of fast operation. Embodiment 2

[0057] As a preferred embodiment of the present invention, this embodiment designs the lifting mechanism of the conveyor on the basis of the first embodiment, specifically:

[0058] The lifting mechanism includes a pulley 17 and a winch 18. The pulley 17 is installed on the top of the frame 13, and the winch 18 is fixed on the other side of the frame 13. Its traction rope passes around the pulley 17 and is fixedly connected to the top of the side beam 14. The winch 18 drives the side beam 14 to rise and fall on the frame 13 through the traction rope.

[0059] The present invention is not limited to the above-mentioned embodiments. Various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention. The changed contents still fall within the protection scope of the present invention.

Claims

1. A pipe arrangement device, characterized in that: It comprises at least two groups of power cross arm assemblies arranged side by side, the power cross arm assemblies comprising a cross arm support and two parallel push rods, the cross arm support is a T-shaped structure, and push rods are installed on both sides of its vertical ribs; The push rod is provided with a plurality of push plates arranged at equal intervals, one end of which is connected to a driving cylinder fixed to a cross arm support; the distance between two adjacent push plates is a step distance, which is greater than the diameter of the pipe rod; the driving cylinder includes a linear reciprocating cylinder, a swing cylinder and a connecting shell, when the swing cylinder drives the push plate of the push rod on one side to fall down, the push plate of the push rod on the other side drives the pipe rod to move forward and backward under the drive of the linear reciprocating cylinder; The pipe laying device described above is characterized in that: the linear reciprocating cylinder is connected to the swing cylinder through a connecting shell, a first piston rod is slidably installed in the linear reciprocating cylinder, and a second piston rod is rotatably installed in the swing cylinder; a piston is mounted on the first piston rod, the left end of which is connected to the push rod, and the right end is a hollow shaft with a sliding key, and the depth of the axial hole is greater than the step distance; a blade is installed on the second piston rod, and an axial sliding key groove is opened on the side wall of the extended end thereof, the length of the sliding key groove is greater than or equal to the step distance and less than the depth of the axial hole at the right end of the first piston rod; the extended end of the second piston rod is slidably inserted into the axial hole at the right end of the first piston rod through the cooperation of the sliding key groove and the sliding key.

2. A pipe arrangement device according to claim 1, characterized in that: The push plate has a width less than or equal to the outer diameter of the push rod, and a height less than the diameter of the pipe rod and greater than or equal to the radius of the pipe rod.

3. A pipe rod arrangement and conveying equipment for oilfield well repair, characterized in that: The pipe arrangement device according to claim 1 or 2 further comprises a conveyor; The conveyor is located on one side of the pipe laying device, and includes a frame, a side beam and an extension beam; the side beam is vertically slidably installed on the frame and is connected to a lifting mechanism; the extension beam is horizontally slidably installed on the side beam and is connected to a reciprocating mechanism, and a roller for receiving pipe rods is installed on its side; when the roller rises to the output end of the pipe laying device, the roller lifts the oil pipe to enter the next process.

4. The pipe rod arrangement and conveying equipment for oilfield well repairing according to claim 3, characterized in that: Multiple layers of the pipe arrangement device form a pipe stack.

5. The pipe-rod arrangement and transportation equipment for oilfield well repairing according to claim 3, characterized in that: The lifting mechanism comprises a pulley and a winch, wherein the pulley is mounted on the top of the frame, and the winch is fixed on the other side of the frame, and a traction rope of the winch passes around the pulley and is fixedly connected with the top of the side beam.

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