Automatic pipe laying device for well repair and pipe laying method

Abstract

The invention discloses an automatic pipe laying device for well repair and a pipe lowering method, and relates to the technical field of pipe laying for well repair. In order to solve the problem that the existing equipment occupies a large space and is inconvenient to transport, a group of pipe grabbing mechanisms, pipe column lifting mechanisms and pipe laying racks are arranged on both sides of a power catwalk, respectively, which not only ensures the pipe laying amount of the pipe rods, but also the pipe laying racks on both sides can be folded at the same time, so that the entire space becomes smaller and is convenient for transportation. The end of the pipe laying rack body connected to the supporting swivel seat is foldable, and the pipe laying rack body can be folded, so that the lateral distance of the entire equipment is reduced during transportation. A pipe laying mechanism transport rack is installed on the power catwalk, and the pipe laying mechanism is transported to the pipe laying mechanism transport rack by the pipe column lifting mechanism. The integrated design is convenient for transportation, and all components can be lifted away at one time and transported by one vehicle.

Description

Technical Field

[0001] The invention relates to the technical field of well repair pipe laying, and in particular to an automatic well repair pipe laying device and a pipe laying method. Background Art

[0002] In oilfield operations, well repair and pipe laying are crucial. When repairing a well, the oil pipes in the wellbore need to be operated. Pipe laying requires the oil pipes to be neatly arranged in order at the well site for easy management and subsequent use. This requires professional equipment and skilled workers. Workers must ensure that the oil pipes are not damaged during transportation and discharge. Reasonable pipe laying can improve well repair efficiency and reduce the probability of accidents. At the same time, the inspection of the oil pipes is also carried out simultaneously during the pipe laying process to promptly discover and remove defective oil pipes.

[0003] Announcement No. CN112796685B discloses an automatic pipe laying device for oilfield well repair operations. The drill pipe pulled out is moved from the inside of the V-groove of the catwalk to three synchronously acting roller mechanisms through a catwalk, and the rotation of the rollers is used to drive the drill pipe to move away from the wellhead. After moving to the specified position, the length measuring mechanism works to measure the drill pipe, and the walking mechanism moves to the position closest to the catwalk, so that the clamping mechanism on the lifting mechanism is directly above the roller mechanism. The lifting mechanism descends, and the clamping mechanism touches the drill pipe. In order to accurately sense the position, an induction sensor can be set on the clamping mechanism, and the clamping mechanism performs a pipe grabbing action. After the pipe grabbing is completed, the lifting mechanism rises to the highest position; the walking mechanism moves away from the catwalk and moves to the outermost pipe row layer of the outermost drill pipe box, and the lifting mechanism descends. When it descends to the lowest position, the pipe grabbing mechanism is released, and the lifting mechanism rises to the highest position; the walking mechanism returns to the catwalk and waits for the next oil pipe. When the outermost pipe layer of the outermost drill rod box is filled with drill rods, the next drill rod will be placed in the next pipe layer according to the program setting parameters.

[0004] However, the above prior art has the following defects:

[0005] In order to meet the needs of laying a large number of oil pipes, the entire equipment is too large, resulting in a large footprint and inconvenience in use.

[0006] Because the entire equipment is too large, whether it is moved over a short distance or transported over a long distance, too many mechanisms need to be dismantled, which makes operation inconvenient. The lifting is also cumbersome and has a high risk factor.

[0007] Therefore, a kind of automatic pipe laying device and pipe lowering method for well repairing are needed. Summary of the invention

[0008] In order to solve all or part of the above problems, the present invention aims to provide an automatic pipe laying device and pipe laying method for well repair, so as to solve the problem that the existing equipment occupies a large space and is inconvenient to transport.

[0009] To achieve the above-mentioned object, the present invention provides the following technical solutions: an automatic pipe arrangement device for well repair, comprising a power catwalk, a pipe grabbing mechanism is installed on the upper end of the power catwalk, a pipe column lifting mechanism is installed on the upper end of the power catwalk, the pipe column lifting mechanism is located on the inner side of the grabbing end of the pipe grabbing mechanism, and a pipe arrangement rack is installed on the power catwalk, wherein the pipe grabbing mechanism, the pipe column lifting mechanism and the pipe arrangement rack are all located on both sides of the power catwalk, and one group of the pipe arrangement racks is arranged on each side, and at least two groups of the pipe arrangement racks are installed on the same side, and a pipe arrangement mechanism is placed on the pipe arrangement rack on at least one side of the power catwalk;

[0010] The pipe rack comprises a supporting rotating seat, a pipe rack body is connected to the supporting rotating seat, and one end of the pipe rack body connected to the supporting rotating seat is foldable;

[0011] The pipe arrangement mechanism comprises a pipe arrangement main frame, a coaxial driving member 2 is installed at the upper end of the pipe arrangement main frame, a connecting rod is provided at the driving end of the coaxial driving member 2, a pipe shifting fork is installed at both ends of the connecting rod, and the coaxial driving member 2 drives the connecting rod to drive the pipe shifting fork to realize 90° rotation;

[0012] A pipe laying mechanism transport frame is installed on the power catwalk.

[0013] Furthermore, the power catwalk includes a catwalk body, a pulley for sliding pipe rods is installed on one side of the upper end of the catwalk body, a length measuring mechanism is installed on the other side of the upper end of the catwalk body, and a pipe rod groove is opened at the upper end of the catwalk body between the pulley and the length measuring mechanism.

[0014] Furthermore, the pipe grabbing mechanism comprises a coaxial driving member 1, a driving rod is provided at the driving end of the coaxial driving member 1, and a group of pipe grabbing components are respectively installed at both ends of the driving rod.

[0015] Furthermore, the pipe grabbing assembly includes a connecting frame, which is mounted on the driving rod by screws, a pipe grabbing clamp is mounted on the inner side of the connecting frame, a motor 1 is mounted on the connecting frame by screws, a driving end of the motor 1 is fixedly connected to a rotating end of the pipe grabbing clamp, the motor 1 drives the pipe grabbing clamp to open, and the coaxial driving member 1 drives the driving rod to drive the connecting frame to rotate, so that the connecting frame is located on the upper side of the pipe rod and the pipe grabbing clamp is located on the lower side of the pipe rod, at which time the motor 1 drives the pipe grabbing clamp to close and clamp the pipe rod.

[0016] Furthermore, the pipe column lifting mechanism includes a support frame, which is fixedly connected to one side of the catwalk body, a servo motor is installed on the upper end of the support frame, the driving end of the servo motor movably passes through the upper end of the support frame, a screw rod is rotatably arranged on the inner side of the support frame, the driving end of the servo motor is connected to the upper end shaft of the screw rod, the outer side of the screw rod is threadedly connected to a lifting bracket, the lifting bracket is located on the inner side of the support frame and is slidably connected to the support frame, and an extension bracket is connected to the end of the lifting bracket away from the screw rod.

[0017] Furthermore, a pipe rod rack is installed on the pipe rack body, and a plurality of tooth grooves are opened on the pipe rod rack, and the tooth grooves match the pipe rods.

[0018] Furthermore, the pipe rack is provided with multiple groups, one end of the pipe rack is fixedly welded with a pipe sleeve 1, and the other end of the pipe rack is fixedly welded with a pipe sleeve 2, both the pipe sleeve 1 and the pipe sleeve 2 are connected to the pipe rack in the middle, and slots are opened at the upper ends of the pipe sleeve 1 and the pipe sleeve 2.

[0019] Furthermore, the tube fork includes a grabbing clamp, a main flow channel is opened on the inner side of one end of the grabbing clamp connected to the connecting rod, a piston column is slidably arranged on the inner side of the main flow channel, a ball is rolled on one end of the piston column, a return spring is fixedly arranged on the other end of the piston column, a supporting air guide plate is fixedly arranged on the end of the return spring away from the piston column, the supporting air guide plate is fixedly connected to the grabbing clamp, a movable block is slidably arranged on the inner side of the clamping end of the grabbing clamp, and a secondary flow channel is also opened on the inner side of the grabbing clamp, which is connected to the main flow channel.

[0020] Furthermore, a spring sheet is fixedly glued to the inner side of the clamping end of the grabbing clamp, which blocks the output port of the secondary flow channel, and one end of the movable block is fitted with the spring sheet. The spring sheet is made of rubber. The main frame of the pipe discharger is located at the lower end of the pipe fork and a limiting ring is screwed to be installed thereon, and the limiting ring is arranged in an arc shape.

[0021] Another technical solution proposed by the present invention is to provide a pipe lowering method for an automatic pipe laying device for well repair, which comprises the following steps:

[0022] S1: The power catwalk transports the pipe rod from the wellhead to the top of the pipe rod slot;

[0023] S2: The pipe grabbing mechanism grabs the pipe rod just above the pipe rod slot and transports it to the side of the power catwalk. At the same time, the pipe column lifting mechanism rises to the bottom of the pipe rod;

[0024] S3: The pipe gripping mechanism is released, and the pipe rod falls onto the pipe column lifting mechanism;

[0025] S4: The pipe column lifting mechanism descends and brings the pipe rod to the pipe rack;

[0026] S5: The pipe shifting fork on the pipe displacing mechanism rotates to the lowest point on one side of the power catwalk, and then moves toward the power catwalk as a whole, so that the pipe shifting fork is inserted to the outside of the pipe rod;

[0027] S6: Then the pipe fork is rotated 90° in the opposite direction to lift the pipe rod;

[0028] S7: The pipe discharging mechanism moves to the set position away from the power catwalk, and the pipe fork rotates 90° in the opposite direction to drop the pipe rod onto the pipe rod rack;

[0029] S8: The pipe discharging mechanism moves to the waiting position in the direction of the power catwalk, and the pipe discharging fork is reset and rotated to the lowest point, waiting for the next pipe rod;

[0030] S9: When one layer of pipe rods is filled with the pipe arrangement rack, move the pipe arrangement mechanism to a position close to the power catwalk, lift the pipe arrangement mechanism with the pipe column lifting mechanism, install the next layer of pipe arrangement rack, and then place the pipe arrangement mechanism on the pipe arrangement rack of this layer to arrange the pipes.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The present invention proposes an automatic pipe laying device and pipe lowering method for well repair, wherein a pipe grabbing mechanism, a pipe column lifting mechanism and a pipe laying rack are arranged in a group on both sides of a power catwalk, respectively, which not only ensures the pipe laying amount of pipe rods, but also the pipe laying racks on both sides can be folded in half at the same time, so that the entire space becomes smaller and is convenient for transportation. Furthermore, the pipe rods are placed in a horizontal stacking manner, the placement amount is guaranteed, and the longitudinal space occupied by the equipment can be flexibly controlled according to the placement amount of the pipe rods.

[0033] The present invention proposes an automatic pipe laying device and pipe lowering method for well repair, at least two groups of pipe laying racks are installed on the same side, and a pipe laying mechanism is placed on the pipe laying rack on at least one side of the power catwalk. The pipe laying mechanism can be placed on both sides of the power catwalk. If the amount of pipes to be laid is large and the output speed from the wellhead is fast, the two groups of pipe laying mechanisms can operate simultaneously, thereby greatly improving work efficiency.

[0034] The present invention proposes an automatic pipe laying device for well repair and a pipe lowering method. The pipe laying rack includes a supporting swivel seat, to which a pipe laying rack body is connected. One end of the pipe laying rack body connected to the supporting swivel seat is foldable. The pipe laying rack body can be folded to reduce the lateral distance of the entire equipment during transportation. A pipe laying mechanism transport frame is installed on the power catwalk. When the pipe laying device needs to be transported, the pipe laying mechanism transport frame is installed on the power catwalk, and the pipe laying mechanism is transported to the pipe laying mechanism transport frame by a pipe column lifting mechanism. The integrated design is convenient for transportation, and all components can be lifted away at one time and transported in one vehicle.

[0035] The present invention proposes an automatic pipe laying device and pipe laying method for well repairing. The pipe laying mechanism includes a pipe laying main frame. A coaxial driving component 2 is installed on the upper end of the pipe laying main frame. A connecting rod is provided at the driving end of the coaxial driving component 2. A pipe shifting fork is installed at both ends of the connecting rod. The coaxial driving component 2 drives the connecting rod to drive the pipe shifting fork to realize a 180° rotation. The coaxial driving component 2 drives the pipe shifting fork to rotate, so that the pipe rod can be placed horizontally and the pipe can be laid. The structure is simple, the operation is convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the three-dimensional structure of the overall pipe arrangement state of the present invention;

[0037] Figure 2 It is a schematic diagram of the overall transport state three-dimensional structure of the present invention;

[0038] Figure 3It is a schematic diagram of the three-dimensional structure of the power catwalk and the pipe grabbing mechanism of the present invention;

[0039] Figure 4 It is a schematic diagram of the three-dimensional structure of the pipe grabbing assembly of the present invention;

[0040] Figure 5 It is a schematic diagram of the three-dimensional structure of the pipe column lifting mechanism of the present invention;

[0041] Figure 6 It is a schematic diagram of the three-dimensional structure of the pipe rack of the present invention;

[0042] Figure 7 It is a schematic diagram of the three-dimensional structure of the pipe arrangement mechanism of the present invention;

[0043] Figure 8 It is a schematic diagram of the three-dimensional structure of the tube fork of the present invention;

[0044] Fig. 9 It is a schematic diagram of the internal planar structure of the grabbing clamp of the present invention.

[0045] In the figure:

[0046] 1. Power catwalk; 11. Catwalk body; 12. Pulley; 13. Pipe rod slot; 14. Length measuring mechanism; 15. Pipe arrangement mechanism support frame; 2. Pipe grabbing mechanism; 21. Coaxial drive member 1; 22. Drive rod; 23. Pipe grabbing assembly; 231. Connecting frame; 232. Motor 1; 233. Pipe grabbing clamp; 3. Pipe column lifting mechanism; 31. Support frame; 32. Servo motor; 33. Screw rod; 34. Lifting bracket; 35. Extension bracket; 4. Pipe arrangement rack; 41. Support swivel seat; 411. Support rail; 42. Pipe arrangement rack; 421. Pipe rod rack; 4 22. Insertion sleeve one; 423. Insertion sleeve two; 43. Base support; 44. Roller; 5. Pipe discharge mechanism; 51. Pipe discharge main frame; 511. Limiting ring; 52. Protective cover; 53. Coaxial drive member two; 54. Connecting rod; 55. Pipe shift fork; 551. Grabbing clamp; 5511. Main flow channel; 5512. Secondary flow channel; 552. Piston column; 553. Ball; 554. Movable block; 555. Shrapnel; 556. Return spring; 557. Support air guide plate; 56. Roller seat assembly; 57. Intermediate supporting roller; 6. Pipe discharge mechanism transport frame. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0048] like Figure 1-Figure 2 As shown, an automatic pipe laying device for well repair includes a power catwalk 1, and pipe grabbing mechanisms 2 are installed on the upper ends of both sides of the power catwalk 1 by screws. Pipe column lifting mechanisms 3 are also installed on the upper ends of both sides of the power catwalk 1 by screws. The pipe column lifting mechanisms 3 are located on the inner side of the grabbing end of the pipe grabbing mechanism 2. Pipe laying racks 4 are installed on the lower ends of both sides of the power catwalk 1 by screws. At least two groups of pipe laying racks 4 are installed on the same side, and pipe laying mechanisms 5 are placed on the pipe laying racks 4.

[0049] like Figure 1 and Figure 3 As shown, the power catwalk 1 includes a catwalk body 11, a pulley 12 for sliding pipe rods is installed on one side of the upper end of the catwalk body 11, and the pulley 12 is used to connect the power catwalk 1 and the wellhead. A length measuring mechanism 14 is installed on the other side of the upper end of the catwalk body 11. A pipe rod groove 13 is opened at the upper end of the catwalk body 11 between the pulley 12 and the length measuring mechanism 14. The pipe rod coming out of the wellhead enters the pipe rod groove 13 through the pulley 12, or the pipe rod on the pipe rod groove 13 enters the wellhead through the pulley 12.

[0050] The pipe grabbing mechanism 2 includes a coaxial driving member 21, which is composed of a motor, a gear 1 and a gear 2. The motor drives the gear 1 to rotate, thereby driving the gear 2 to rotate. A driving rod 22 is installed through the center of the gear 2. The driving end of the coaxial driving member 21 is provided with a driving rod 22. A group of pipe grabbing assemblies 23 are respectively installed at both ends of the driving rod 22. The rotation of the driving rod 22 can drive the pipe grabbing assembly 23 to rotate, so that the pipe grabbing assembly 23 can grab the pipe rod on the catwalk body 11.

[0051] like Figure 3 and Figure 4 As shown, the pipe grabbing assembly 23 includes a connecting frame 231, which is installed on the driving rod 22 by screws. The connecting frame 231 is arranged in a hook shape, and a pipe grabbing clamp 233 is installed on the inner side of the hooking end of the connecting frame 231. A motor 232 is installed on the connecting frame 231 by screws. The driving end of the motor 232 is fixedly connected to the rotating end of the pipe grabbing clamp 233. The motor 232 drives the pipe grabbing clamp 233 to open, and the coaxial driving member 21 drives the driving rod 22 to drive the connecting frame 231 to rotate, so that the connecting frame 231 is located on the upper side of the pipe rod, and the pipe grabbing clamp 233 is located on the lower side of the pipe rod. At this time, the motor 232 drives the pipe grabbing clamp 233 to close and clamp the pipe rod, and the coaxial driving member 21 drives in the reverse direction so that the connecting frame 231 drives the pipe rod to rotate and take it out from the pipe rod groove 13.

[0052] like Figure 1 and Figure 5As shown, the pipe column lifting mechanism 3 includes a support frame 31, a servo motor 32 is installed on the upper end of the support frame 31, the driving end of the servo motor 32 movably penetrates the upper end of the support frame 31, a screw rod 33 is rotatably arranged on the inner side of the support frame 31, the driving end of the servo motor 32 is connected to the upper end shaft of the screw rod 33, the outer side of the screw rod 33 is threadedly connected to a lifting bracket 34, and the end of the lifting bracket 34 away from the screw rod 33 is connected to an extension bracket 35, the rotation of the servo motor 32 can drive the screw rod 33 to rotate, thereby making the lifting bracket 34 move up and down, when the pipe grabbing assembly 23 grabs the pipe rod, the lifting bracket 34 rises to the lower side of the pipe rod, the pipe grabbing assembly 23 opens so that the pipe rod is received by the lifting bracket 34, and then the lifting bracket 34 is lowered to the bottom to complete the intermediate transportation of the pipe rod.

[0053] like Figure 1 , Figure 2 and Figure 6 As shown, the pipe rack 4 includes a supporting swivel seat 41, to which a pipe rack body 42 is connected. The end of the pipe rack body 42 connected to the supporting swivel seat 41 is foldable. When the entire device is transported, the space occupied by the entire device is reduced by folding the pipe rack body 42, thereby facilitating transportation. The lower end of the pipe rack body 42 is threadedly installed with multiple groups of base support members 43. The base support member 43 consists of a bolt rod at the upper end and a support plate at the lower end, which is not only convenient for connection but also provides stable support.

[0054] A support track 411 is provided inside the support swivel seat 41 on one side close to the pipe rack 42, and a roller 44 is provided at the end of the pipe rack 42 corresponding to the support track 411. The roller 44 is driven by the pipe rack 42 to move on the support track 411, so that the height of the pipe rack 42 and the ground can be adjusted, and then the pipe rack 42 and the support swivel seat 41 are connected by a pin, and then the base support 43 is fine-tuned to install the pipe rack 42.

[0055] A pipe rod rack 421 is installed on the pipe rack body 42. A plurality of tooth grooves are provided on the pipe rod rack 421. The tooth grooves match the pipe rods, thereby facilitating the support of the pipe rods and preventing the pipe rods from rolling.

[0056] The pipe rack 42 is provided with multiple groups, one end of the pipe rack 42 is fixedly welded with a pipe sleeve 1 422, and the other end of the pipe rack 42 is fixedly welded with a pipe sleeve 2 423. The pipe sleeve 1 422 and the pipe sleeve 2 423 are both connected to the pipe rack 42 in the middle, and slots are provided at the upper ends of the pipe sleeve 1 422 and the pipe sleeve 2 423, and the slots do not penetrate the pipe sleeve 1 422 or the pipe sleeve 2 423. The slots of the lower group of pipe racks 42 match the lower ends of the pipe sleeve 1 422 or the pipe sleeve 2 423 of the upper group of pipe racks 42. After the lowest pipe rack 42 is fully loaded with pipes, the two ends of the pipe rack 42 are separately inserted into the slots to complete the installation of the upper group of pipe racks 42, thereby realizing multi-layer pipe row, reducing the space occupied by the equipment and increasing the amount of pipe row.

[0057] In order to further improve the supporting stability of the pipe rack 4, three groups of pipe racks 4 are arranged, among which the middle part of the pipe rack body 42 of the middle group can also be folded. In this way, while ensuring the supporting stability, the pipe rack body 42 can be folded twice, so that all three groups of pipe racks 4 can be folded for transportation.

[0058] like Figure 1 , Figure 2 and Figure 7 As shown, the pipe row mechanism 5 includes a pipe row main frame 51, a protective cover 52 is installed on the upper end of the pipe row main frame 51 by screws, a coaxial driving member 53 is installed on the upper end of the pipe row main frame 51 located inside the protective cover 52, and a connecting rod 54 is provided at the driving end of the coaxial driving member 53, and a group of pipe shifting forks 55 are installed at both ends of the connecting rod 54, and a roller seat assembly 56 is installed on the pipe row main frame 51 located on one side of the pipe shifting fork 55. The roller seat assembly 56 is composed of a motor and a roller or a motor, a chain, a gear and a roller in the prior art, and the driving end of the roller seat assembly 56 is matched with the middle part of the pipe rod frame 421, and the roller is driven to rotate by the motor, so that the entire pipe row mechanism 5 moves back and forth on the pipe row frame 42.

[0059] In order to further improve the movement stability of the pipe arrangement mechanism 5, an intermediate support roller 57 is further provided at the upper end of the pipe arrangement main frame 51. The intermediate support roller 57 matches the middle pipe arrangement frame 42 to facilitate the support of the pipe arrangement mechanism 5 to move back and forth on the middle pipe arrangement frame 42.

[0060] like Figure 1 , Figure 2 and Figure 7-Figure 9As shown, the pipe fork 55 includes a grabbing clamp 551, and a main flow channel 5511 is opened inside the end of the grabbing clamp 551 connected to the connecting rod 54. A piston column 552 is slidably arranged inside the main flow channel 5511, and a ball 553 is rolledly arranged at one end of the piston column 552. A return spring 556 is fixedly arranged at the other end of the piston column 552. A support air guide sheet 557 is fixedly arranged at the end of the return spring 556 away from the piston column 552. The support air guide sheet 557 is fixedly connected to the grabbing clamp 551. The grabbing clamp 551 A movable block 554 is slidably provided on the inner side of the clamping end, and a secondary flow channel 5512 is also provided on the inner side of the grabbing clamp 551. The secondary flow channel 5512 is connected to the main flow channel 5511. A spring piece 555 is fixedly glued on the inner side of the clamping end of the grabbing clamp 551. The spring piece 555 blocks the output port of the secondary flow channel 5512, and one end of the movable block 554 is fitted with the spring piece 555. The spring piece 555 is made of rubber. A limiting ring 511 is screwed onto the lower end of the pipe fork 55 of the main frame 51 of the drain pipe, and the limiting ring 511 is arranged in an arc shape.

[0061] Specifically, taking the pipe rod being transported from the wellhead to the pipe rod rack 421 as an example, when the pipe fork 55 rotates to the lowest point, the ball 553 and the restriction ring 511 are in a non-contact state, and the ball 553 has no reverse pressure. At this time, the piston column 552 is reset due to the reset action of the reset spring 556, and the piston column 552 increases the space of the main flow channel 5511. At this time, the pressure passes through the secondary flow channel 5512 to reset the movable block 554. The clamping end of the grabbing clamp 551 is not blocked, so it is easy to cover the outside of the pipe rod. When the pipe rod needs to be lifted and the pipe fork 55 rotates in the opposite direction, the ball 553 is reset. 53 is restricted and squeezed by the limiting ring 511, so that the movable block 554 is squeezed and extended, so that the pipe rod will not roll and fall. When the pipe rod needs to be placed on the pipe rod rack 421, since the movable block 554 has not been reset, it will hinder the pipe rod from rolling until the pipe rod falls on the pipe rod rack 421. At this time, the ball 553 and the limiting ring 511 are in a non-contact state, which is convenient for the grabbing clamp 551 to separate from the pipe rod, so that the pipe rod is placed on the pipe rod rack 421, avoiding the pipe rod from falling during the rotation process, resulting in pipe rod stacking, ensuring the stability of the pipe rod arrangement, and improving the practical stability of the entire equipment.

[0062] When the equipment needs to be moved, pipe laying mechanism support frames 15 are installed on both sides of the catwalk body 11, and the pipe laying mechanism support frames 15 are connected to the pipe laying mechanism transport frame 6. The pipe laying mechanism transport frame 6 is installed on the pipe laying mechanism support frame 15, and then the pipe laying mechanism 5 is transported to the pipe laying mechanism transport frame 6 through the pipe column lifting mechanism 3 and manual labor to facilitate overall transportation.

[0063] Further, such as Figure 1-Figure 7 As shown, another technical solution proposed by the present invention is to provide a pipe lowering method of an automatic pipe laying device for well repair, comprising the following steps:

[0064] Step 1: The power catwalk 1 transports the pipe rod from the wellhead to just above the pipe rod groove 13;

[0065] Step 2: The pipe grabbing mechanism 2 grabs the pipe rod just above the pipe rod slot 13 and transports it to the side of the power catwalk 1. At the same time, the pipe column lifting mechanism 3 rises to the bottom of the pipe rod;

[0066] Step 3: The pipe grabbing mechanism 2 is released, and the pipe rod falls onto the pipe column lifting mechanism 3;

[0067] Step 4: The pipe column lifting mechanism 3 descends to bring the pipe rod to the pipe rack 4;

[0068] Step 5: The pipe fork 55 on the pipe arrangement mechanism 5 rotates to the lowest point on one side of the power catwalk 1, and then moves toward the power catwalk 1 as a whole, and inserts the pipe fork 55 to the outside of the pipe rod;

[0069] Step 6: Then the pipe fork 55 is rotated 90° in the opposite direction to lift the pipe rod;

[0070] Step 7: The pipe arrangement mechanism 5 moves away from the power catwalk 1 to a set position, which can be achieved by an encoder, and the pipe fork 55 rotates 90° in the opposite direction to drop the pipe rod onto the pipe rod rack 421;

[0071] Step 8: The pipe arrangement mechanism 5 moves toward the power catwalk 1 to the waiting position, and the pipe fork 55 is reset and rotated to the lowest point, waiting for the next pipe rod;

[0072] Step nine: When one layer of pipe rods is filled with the pipe arrangement rack 42, move the pipe arrangement mechanism 5 to a position close to the power catwalk 1, lift the pipe arrangement mechanism 5 with the pipe column lifting mechanism 3, install the next layer of pipe arrangement rack 42, and then place the pipe arrangement mechanism 5 on the pipe arrangement rack 4 of this layer to arrange the pipes.

[0073] Further, such as Figure 1-Figure 7 As shown, another technical solution proposed by the present invention is to provide a pipe placing method for an automatic pipe laying device for well repair, comprising the following steps:

[0074] Step 1: The pipe arrangement mechanism 5 first moves a certain distance toward the power catwalk 1, and the pipe shifting fork 55 rotates to the lowest point in the direction of the pipe rod, and then moves toward the pipe rod as a whole;

[0075] Step 2: The pipe arrangement mechanism 5 moves toward the pipe rod to a set position, which can be achieved by an encoder, and the pipe fork 55 continues to rotate toward the power catwalk 1 and rotates 90° to grab the pipe rod onto the pipe arrangement mechanism 5, and moves toward the power catwalk 1 as a whole;

[0076] Step 3: The pipe arrangement mechanism 5 moves to a position close to the power catwalk 1, the pipe fork 55 continues to rotate to the lowest position, the pipe rod falls onto the pipe arrangement rack 4, and the pipe arrangement mechanism 5 moves in the opposite direction for a distance;

[0077] Step 4: The pipe fork 55 rotates in the opposite direction to the lowest position and moves toward the pipe pile to be loaded;

[0078] Step 5: The pipe column lifting mechanism 3 rises, brings the pipe rod to one side of the pipe rod groove 13, the pipe grabbing mechanism 2 rotates and rises, grabs the pipe rod, and the pipe column lifting mechanism 3 descends to the lowest point;

[0079] Step 6: The pipe grabbing mechanism 2 continues to rise, sending the pipe rod to the top, and the pipe grabbing mechanism 2 is released and falls;

[0080] Step 7: The power catwalk 1 transports the pipe rod from just above the pipe rod slot 13 to the wellhead;

[0081] Step 8: The pipe arrangement mechanism 5 moves to the waiting position in the direction of the pipe pile to be loaded, and the pipe fork 55 rotates to the lowest point to wait for the next pipe to be delivered;

[0082] Step nine: After one layer of pipe rods is transported, move the pipe arrangement mechanism 5 to a position close to the power catwalk 1, lift the pipe arrangement mechanism 5 with the pipe column lifting mechanism 3, remove the pipe arrangement frame 42 of this layer, and then place the pipe arrangement mechanism 5 on the pipe arrangement frame 42 of the next layer to transport the pipe rods.

[0083] It should be noted that, in the description of the present application, it should be understood that the terms "length", "thickness", "inside", "outside", "axial", "radial", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship 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 element 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.

[0084] In addition, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises", or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0085] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic pipe arrangement device for well repair, comprising a power catwalk (1), a pipe grabbing mechanism (2) being installed at the upper end of the power catwalk (1), a pipe column lifting mechanism (3) being installed at the upper end of the power catwalk (1), the pipe column lifting mechanism (3) being located on the inner side of the grabbing end of the pipe grabbing mechanism (2), and a pipe arrangement rack (4) being installed on the power catwalk (1), characterized in that: The pipe grabbing mechanism (2), the pipe column lifting mechanism (3) and the pipe rack (4) are all located on both sides of the power catwalk (1), with one group being arranged on each side. At least two groups of pipe racks (4) are installed on the same side. A pipe rack (5) is placed on at least one side of the power catwalk (1). The pipe rack (4) comprises a supporting rotating seat (41), a pipe rack body (42) is connected to the supporting rotating seat (41), and one end of the pipe rack body (42) connected to the supporting rotating seat (41) is foldably arranged; The pipe arrangement mechanism (5) comprises a pipe arrangement main frame (51), a coaxial driving member 2 (53) is mounted on the upper end of the pipe arrangement main frame (51), a connecting rod (54) is arranged at the driving end of the coaxial driving member 2 (53), pipe shifting forks (55) are mounted at both ends of the connecting rod (54), and the coaxial driving member 2 (53) drives the connecting rod (54) to drive the pipe shifting fork (55) to achieve 180° rotation; The pipe shifting fork (55) comprises a grabbing clamp (551), a main flow channel (5511) is provided on the inner side of one end of the grabbing clamp (551) connected to the connecting rod (54), a piston column (552) is slidably provided on the inner side of the main flow channel (5511), a ball (553) is rotatably provided on one end of the piston column (552), a return spring (556) is fixedly provided on the other end of the piston column (552), a support air guide sheet (557) is fixedly provided on the end of the return spring (556) away from the piston column (552), the support air guide sheet (557) is fixedly connected to the grabbing clamp (551), a movable block (554) is slidably provided on the inner side of the clamping end of the grabbing clamp (551), a secondary flow channel (5512) is also provided on the inner side of the grabbing clamp (551), and the secondary flow channel (5512) is connected to the main flow channel (5511); A pipe arrangement mechanism transport frame (6) is installed on the power catwalk (1).

2. The automatic pipe laying device for well repairing as claimed in claim 1, characterized in that: The power catwalk (1) comprises a catwalk body (11), a pulley (12) for sliding a pipe rod is installed on one side of the upper end of the catwalk body (11), a length measuring mechanism (14) is installed on the other side of the upper end of the catwalk body (11), and a pipe rod groove (13) is provided at the upper end of the catwalk body (11) between the pulley (12) and the length measuring mechanism (14).

3. The automatic pipe laying device for well repairing as claimed in claim 1, characterized in that: The pipe grabbing mechanism (2) comprises a coaxial driving member (21), a driving rod (22) being provided at the driving end of the coaxial driving member (21), and a set of pipe grabbing assemblies (23) being respectively installed at both ends of the driving rod (22).

4. The automatic pipe laying device for well repairing as claimed in claim 3, characterized in that: The pipe grabbing assembly (23) comprises a connecting frame (231), the connecting frame (231) being mounted on the driving rod (22) by means of screws, a pipe grabbing clamp (233) being mounted on the inner side of the connecting frame (231), a motor 1 (232) being mounted on the connecting frame (231) by means of screws, a driving end of the motor 1 (232) being fixedly connected to a rotating end of the pipe grabbing clamp (233), the motor 1 (232) driving the pipe grabbing clamp (233) to open, the coaxial driving member 1 (21) driving the driving rod (22) driving the connecting frame (231) to rotate, so that the connecting frame (231) is located on the upper side of the pipe rod and the pipe grabbing clamp (233) is located on the lower side of the pipe rod, at which time the motor 1 (232) driving the pipe grabbing clamp (233) to close and clamp the pipe rod.

5. The automatic pipe laying device for well repairing as claimed in claim 1, characterized in that: The pipe column lifting mechanism (3) comprises a support frame (31), the support frame (31) is fixedly connected to one side of the catwalk body (11), a servo motor (32) is installed at the upper end of the support frame (31), the driving end of the servo motor (32) movably penetrates the upper end of the support frame (31), a screw rod (33) is rotatably arranged on the inner side of the support frame (31), the driving end of the servo motor (32) is connected to the upper end shaft of the screw rod (33), the outer side of the screw rod (33) is threadedly connected to a lifting bracket (34), the lifting bracket (34) is located on the inner side of the support frame (31) and is slidably connected to the support frame (31), and the end of the lifting bracket (34) away from the screw rod (33) is connected to an extension bracket (35).

6. The automatic pipe laying device for well repairing as claimed in claim 1, characterized in that: A pipe rod rack (421) is installed on the pipe rack body (42), and a plurality of tooth grooves are formed on the pipe rod rack (421), and the tooth grooves match the pipe rods.

7. The automatic pipe laying device for well repairing as claimed in claim 6, characterized in that: The pipe rack (42) is provided with a plurality of groups, one end of the pipe rack (42) is fixedly welded with a first pipe sleeve (422), and the other end of the pipe rack (42) is fixedly welded with a second pipe sleeve (423), the first pipe sleeve (422) and the second pipe sleeve (423) are both connected to the pipe rack (42) at the middle, and slots are provided at the upper ends of the first pipe sleeve (422) and the second pipe sleeve (423).

8. The automatic pipe laying device for well repairing as claimed in claim 1, characterized in that: A spring sheet (555) is fixedly glued to the inner side of the clamping end of the grabbing clamp (551), the spring sheet (555) blocks the output port of the secondary flow channel (5512), and one end of the movable block (554) is in contact with the spring sheet (555), the spring sheet (555) is made of rubber, and a limiting ring (511) is screwedly mounted on the lower end of the pipe shifting fork (55) of the pipe displacement main body frame (51), the limiting ring (511) being arranged in an arc shape.

9. A method for lowering pipes of an automatic pipe laying device for well repairing as claimed in claim 2, characterized in that: The following steps are involved: S1: The power catwalk (1) transports the pipe rod from the wellhead to the top of the pipe rod slot (13); S2: The pipe grabbing mechanism (2) grabs the pipe rod just above the pipe rod slot (13) and transports it to the side of the power catwalk (1). At the same time, the pipe column lifting mechanism (3) rises to the bottom of the pipe rod; S3: the pipe gripping mechanism (2) is released, and the pipe rod falls onto the pipe column lifting mechanism (3); S4: the pipe column lifting mechanism (3) descends to bring the pipe rod to the pipe rack (4); S5: The pipe shifting fork (55) on the pipe displacing mechanism (5) rotates to the lowest point on one side of the power catwalk (1), and then moves as a whole toward the power catwalk (1), so that the pipe shifting fork (55) is inserted to the outside of the pipe rod; S6: Then the pipe fork (55) is rotated 90° in the opposite direction to lift the pipe rod; S7: the pipe discharging mechanism (5) moves to a set position in a direction away from the power catwalk (1), and the pipe shifting fork (55) rotates 90° in the opposite direction to drop the pipe rod onto the pipe rod rack (421); S8: the pipe discharging mechanism (5) moves toward the power catwalk (1) to a waiting position, and the pipe shifting fork (55) is reset and rotated to the lowest point, waiting for the next pipe rod; S9: When the pipe rack (42) of one layer is filled with pipe rods, the pipe rack mechanism (5) is moved to a position close to the power catwalk (1), the pipe rack mechanism (5) is lifted by the pipe column lifting mechanism (3), the pipe rack (42) of the next layer is installed, and the pipe rack mechanism (5) is placed on the pipe rack of this layer to rack the pipes.

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