Pipe-rod two-in-one well repairing device

Abstract

The invention belongs to the technical field of oil field well repair equipment, and particularly relates to a pipe and rod two-in-one well repair device which comprises a rack, a large clamp mechanism and a centering mechanism are arranged on the rack, and the centering mechanism is arranged on one side of the large clamp mechanism; the large tong mechanism comprises a main tong, a back-up tong and a driving mechanism, the main tong is arranged over the back-up tong, the main tong and the back-up tong are each provided with two oppositely-arranged clamping blocks, the clamping blocks are each provided with a chuck, the chucks are arranged on the clamping blocks in a replaceable mode, the chucks comprise an oil pipe chuck and an oil rod chuck, and the driving mechanism is used for driving the main tong to do lifting motion. The clamping component is divided into the clamping block and the detachable clamping head, the centering component is divided into the centering shell and the detachable centering plate, when an oil pipe or an oil rod is operated, only the corresponding clamping head and the corresponding centering plate need to be replaced, work can be conducted, and compared with replacement of the whole module, the work efficiency is improved; and the centering mechanism and the tong mechanism are integrated on the rack, so that the operation convenience is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of oilfield workover equipment, and particularly relates to a pipe-rod integrated workover device. Background Art

[0002] A workover rig is the most commonly used mechanical equipment in workover operations, mainly used for retrieving, repairing and replacing, and re-lowering downhole oil production equipment and tools such as oil pipes, sucker rods, and submersible pumps that have failed or been damaged, as well as suction, sand fishing, mechanical paraffin removal, etc.

[0003] Due to the different sizes and hardnesses of oil pipes and sucker rods, different clamping structures and centering structures are required for operation. Therefore, in order to meet the operation requirements for both, the existing intelligent workover systems currently operate in two modules for oil pipes and sucker rods. Before operating on oil pipes and sucker rods, different modules need to be lifted for work, which is time-consuming and laborious.

[0004] In view of this, there is an urgent need for a pipe-rod integrated workover device. Summary of the Invention

[0005] Aiming at the problems in the prior art, the present invention provides a pipe-rod integrated workover device to solve the problems in the prior art.

[0006] To achieve the above technical objectives, the technical solution of the present invention is as follows: A pipe-rod integrated workover device includes a frame, on which a large tong mechanism and a centering mechanism are arranged, and the centering mechanism is arranged on one side of the large tong mechanism; The large tong mechanism includes a main tong, a back tong and a driving mechanism. The main tong is arranged directly above the back tong. Two relatively arranged clamping blocks are provided on both the main tong and the back tong. Clamping heads are provided on the clamping blocks, and the clamping heads are replaceably arranged on the clamping blocks. The clamping heads include an oil pipe clamping head and a sucker rod clamping head. The driving mechanism is used to drive the main tong to move up and down; The centering mechanism includes two centering modules. Each centering module includes a centering housing, a centering plate and a first driving component. The two centering housings are arranged vertically and oppositely. A centering space is formed between the two centering housings. The centering plate is arranged on the side of the centering housing close to the centering space, and the centering plate is replaceably arranged on the centering housing. The two centering plates are used to limit the position of the oil pipe or the sucker rod. The centering plate includes an oil pipe centering plate and a sucker rod centering plate. The oil pipe centering plate is used to limit the position of the oil pipe, and the sucker rod centering plate is used to limit the position of the sucker rod. The first driving component is used to drive the centering housing to approach or move away from the other centering housing.

[0007] Two positioning grooves are provided on the clamping block, and the clamping head is clamped at the positioning grooves.

[0008] The chuck is fixed to the clamping block by bolts.

[0009] On one side of the two tubing centering plates close to each other, a first guiding groove and a first centering groove extending in the vertical direction are provided. The first guiding groove is arranged at the top of the first centering groove, and the top opening of the first guiding groove is larger than the bottom opening.

[0010] The tubing centering plate is fixed to the centering housing by bolts.

[0011] The oil rod centering plate includes a guiding plate and a first limiting plate arranged at the bottom of the guiding plate. The guiding plate and the first limiting plate are rotatably connected. The top end of the guiding plate is rotatably arranged on the centering housing, and elastic members are arranged on one side of the bottom ends of the guiding plate and the first limiting plate away from the centering space; On one side of the guiding plate close to the centering space, a second guiding groove is provided. On one side of the first limiting plate close to the centering space, a second centering groove extending in the vertical direction is provided. The top opening of the second guiding groove is larger than the bottom opening.

[0012] On the centering housing, two upward-opening clamping grooves are provided. On the guiding plate, two rotating shafts are provided, and the two rotating shafts are respectively arranged in the two clamping grooves.

[0013] The first driving assembly includes a first push rod and two first connecting rods. The two first connecting rods are arranged in parallel. One end of each of the two first connecting rods is rotatably arranged on the centering housing, and the other end of each of the two first connecting rods is rotatably arranged on the frame. The first push rod is rotatably arranged on the frame, and the driving end of the first push rod is rotatably connected to one of the first connecting rods.

[0014] A guiding mechanism is arranged on the frame. The guiding mechanism is arranged above the tong mechanism and the centering mechanism. The guiding mechanism includes two second limiting plates arranged in parallel in the horizontal direction and a second driving member. On one side of the two second limiting plates close to each other, a lower pipe initial positioning groove and a centering initial positioning groove are provided. The second driving member is used to drive the two second limiting plates to move towards each other or away from each other synchronously. When the two second limiting plates are in contact, the two lower pipe initial positioning grooves are located directly above the tong mechanism, and the two centering initial positioning grooves are located directly above the centering mechanism.

[0015] The guiding mechanism includes a slide rail. The two second limiting plates are slidably clamped on the slide rail. The second driving member includes a second push rod and two second connecting rods. The second push rod is arranged on the frame. One end of each of the two second connecting rods is rotatably arranged at the driving end of the second push rod, and the other end of each of the two second connecting rods is rotatably connected to the two second limiting plates respectively. The driving direction of the second push rod is perpendicular to the extending direction of the slide rail.

[0016] The above structure of the present invention can achieve the following beneficial effects: In this application, the clamping component is divided into a clamping block and a detachable chuck, and the centering component is divided into a centering housing and a detachable centering plate. When operating on a tubing or sucker rod, only the corresponding chuck and centering plate need to be replaced to carry out the work. Compared with replacing the entire module, the work efficiency is improved, and the centering mechanism and the tong mechanism are integrated on the frame, improving the operation convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of an embodiment of the present invention; Figure 2 is a schematic structural diagram of the tong mechanism in an embodiment of the present invention; Figure 3 is a schematic structural diagram of the tubing chuck in an embodiment of the present invention; Figure 4 is a schematic structural diagram of the sucker rod chuck in an embodiment of the present invention; Figure 5 is a schematic structural diagram of the centering mechanism in an embodiment of the present invention; Figure 6 is a schematic structural diagram of the tubing centering plate in an embodiment of the present invention; Figure 7 is a schematic structural diagram of the sucker rod centering plate in an embodiment of the present invention; Figure 8 is a schematic structural diagram of the sucker rod centering plate from another perspective in an embodiment of the present invention; Figure 9 is a schematic structural diagram of the guiding mechanism in an embodiment of the present invention.

[0018] In the figure: 1, main tong; 2, back tong; 3, clamping block; 31, chuck; 32, positioning groove; 4, tubing centering plate; 41, first guiding groove; 42, first centering groove; 5, sucker rod centering plate; 51, guiding plate; 52, first limiting plate; 53, second guiding groove; 54, second centering groove; 55, rotating shaft; 6, centering module; 61, centering housing; 62, clamping groove; 63, first push rod; 64, first connecting rod; 7, elastic member; 8, guiding mechanism; 81, second limiting plate; 82, lower pipe initial positioning groove; 83, centering initial positioning groove; 84, second push rod; 85, second connecting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] It should be noted that the terms "including" and "having" in the description and claims of the present invention and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, device, product or equipment that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or equipment.

[0021] The following will Figures 1-9 further elaborate on this application.

[0022] Refer to Figures 1-3 a pipe-rod integrated workover device as shown, which includes a frame, a large tong mechanism and a centering mechanism are arranged on the frame, and the centering mechanism is arranged on one side of the large tong mechanism; The large tong mechanism includes a main tong 1, a back tong 2 and a driving mechanism. The main tong 1 is arranged directly above the back tong 2. Two relatively arranged clamping blocks 3 are arranged on both the main tong 1 and the back tong 2. Clamping heads 31 are arranged on the clamping blocks 3. The clamping heads 31 are replaceably arranged on the clamping blocks 3. The clamping heads 31 include a tubing clamping head and a rod clamping head (the tubing clamping head and the rod clamping head match with the tubing and the rod respectively). The driving mechanism is used to drive the main tong 1 to move up and down, and a first driving member for driving the two clamping blocks 3 to move towards or away from each other and a second driving member for driving the two clamping blocks 3 to rotate in the horizontal direction are arranged on the main tong 1. Both the first driving member and the second driving member are of a prior art type; The centering mechanism includes two centering modules 6. The centering module 6 includes a centering housing 61, a centering plate and a first driving assembly. The two centering housings 61 are arranged vertically opposite to each other. A centering space is between the two centering housings 61. The centering plate is arranged on the side of the centering housing 61 close to the centering space. The centering plate is replaceably arranged on the centering housing 61. The two centering plates are used to limit the tubing or the rod. The centering plate includes a tubing centering plate 4 and a rod centering plate 5. The first driving assembly is used to drive the centering housing 61 to approach or move away from the other centering housing 61.

[0023] Based on the above structure, during use, the rack is installed on a carrier (such as a vehicle body). When repairing a well, the rack is moved to the wellhead. When operating on the tubing, the tubing to be installed is suspended near the wellhead by a suspension device. Two tubing centering plates 4 are installed on two centering housings 61, and two tubing chucks are installed on two clamping blocks 3. The first driving assembly drives the two centering housings 61 to approach each other (at this time, the centering space is directly above the tubing at the wellhead), and then the tubing to be installed is inserted into the centering space between the two centering modules 6 from top to bottom. The tubing to be installed is centered with the bottom tubing through the two tubing centering plates 4. Then, the first driving assembly drives the two centering housings 61 to move away from each other, and drives the tong mechanism to move towards the centering mechanism side (it can be achieved by driving the entire rack towards the centering mechanism side or driving the tong mechanism alone towards the centering mechanism side), so that the tubing to be installed is between the two tubing chucks on the master tong 1. Then, the two clamping blocks 3 on the master tong 1 approach each other (at this time, the master tong 1 is at the highest point) until the tubing to be installed is clamped. The two clamping blocks 3 on the back tong 2 approach each other until the collar on the tubing at the wellhead is clamped. Then, the two clamping blocks 3 on the master tong 1 rotate, and at the same time, the driving mechanism drives the master tong 1 to move towards the back tong 2 side to screw and connect the bottom of the tubing to be installed with the collar of the tubing at the wellhead (if unscrewing the rod, it is screwed in the reverse direction, and the driving mechanism drives the master tong 1 to move away from the back tong 2 side). Then, the clamping blocks 3 on the master tong 1 and the back tong 2 move away from each other to complete the docking of the two tubings. In this way, the tubing lowering is completed. When operating on the sucker rod, the sucker rod chuck and the sucker rod centering plate 5 are respectively replaced for the tubing chuck and the tubing centering plate 4, and then the sucker rod is centered through the centering mechanism and screwed and connected through the tong mechanism (the installation process of the sucker rod is basically the same as that of the tubing). Therefore, in this application, the clamping components are divided into the clamping blocks 3 and the detachable chucks 31, and the centering components are divided into the centering housings 61 and the detachable centering plates. When operating on the tubing or the sucker rod, only the corresponding chucks 31 and centering plates need to be replaced to carry out the work. Compared with replacing the entire module, the work efficiency is improved, and the centering mechanism and the tong mechanism are integrated on the rack, improving the operation convenience.

[0024] As Figure 3 and Figure 4 shown, two positioning grooves 32 are provided on the clamping block 3, and the chuck 31 is clamped at the positioning grooves 32. In this way, when disassembling and assembling the chuck 31, the chuck 31 is positioned through the two positioning grooves 32, improving the efficiency and convenience of replacing and installing the chuck 31; and the chuck 31 is fixed to the clamping block 3 by bolts, improving the installation stability of the chuck 31.

[0025] As Figure 5 and Figure 6As shown in the figure, on one side of the two tubing centering plates 4 close to each other, there are first guiding grooves 41 and first centering grooves 42 extending in the vertical direction. The first guiding grooves 41 are arranged at the top of the first centering grooves 42, and the top opening of the first guiding grooves 41 is larger than the bottom opening. In this way, when the two tubing centering plates 4 are combined, the two first centering grooves 42 and the two first guiding grooves 41 form a centering space, and the top openings of the two first guiding grooves 41 are larger than the bottom openings, that is to say, the two first guiding grooves 41 form a funnel-shaped space, which facilitates the insertion of the tubing into the centering space and centering through the two first centering grooves 41. To facilitate the disassembly and assembly of the tubing centering plate 4, the tubing centering plate 4 is fixed to the centering housing 61 by bolts.

[0026] As Figure 7 and Figure 8 shown in the figure, the oil rod centering plate 5 includes a guiding plate 51 and a first limiting plate 52 arranged at the bottom of the guiding plate 51. The guiding plate 51 and the first limiting plate 52 are rotatably connected, the top end of the guiding plate 51 is rotatably arranged on the centering housing 61, and elastic members 7 are arranged on the sides of the bottom ends of the guiding plate 51 and the first limiting plate 52 away from the centering space; on the side of the guiding plate 51 close to the centering space, there is a second guiding groove 53, and on the side of the first limiting plate 52 close to the centering space, there is a second centering groove 54 extending in the vertical direction. The top opening of the second guiding groove 53 is larger than the bottom opening. Since the oil rod is relatively soft, the guiding plate 51 and the first limiting plate 52 which are rotatably arranged are used to center the oil rod. The oil rod is inserted into the hourglass-shaped space formed by the two second guiding grooves 53 from top to bottom and finally enters the space formed by the two second centering grooves 54 for centering. If the position of the oil rod deviates from the centering space, the guiding plate 51 rotates relative to the centering housing 61 or the first limiting plate 52 rotates relative to the guiding plate 51, and the corresponding elastic member 7 is compressed, so as to perform flexible centering on the oil rod (the elastic force of the elastic member pushes the guiding plate 51 and the limiting plate 52 towards the center), avoiding damage to the oil rod. To realize the rotation of the guiding plate 51, two upward-opening clamping grooves 62 are arranged on the centering housing 61 in the horizontal direction, and two rotating shafts 55 are arranged on the guiding plate 51, and the two rotating shafts 55 are respectively arranged in the two clamping grooves 62.

[0027] As Figure 5As shown in the figure, in order to drive the centering housing 61, the first drive assembly includes a first push rod 63 and two first link rods 64. The two first link rods 64 are arranged in parallel. One end of each of the two first link rods 64 is rotatably arranged on the centering housing 61, and the other end of each of the two first link rods 64 is rotatably arranged on the frame. The first push rod 63 is rotatably arranged on the frame, and the driving end of the first push rod 63 is rotatably connected to one of the first link rods 64. In this way, the centering housing 61 is installed by the two first link rods 64, and the first push rod 63 is used to drive one of the first link rods 64 to move, so that the angle between the first link rod 64 and the horizontal plane changes, and then the position of the centering housing 61 is adjusted to achieve driving.

[0028] As Figure 1 and Figure 9 shown in the figure, in order to initially guide the oil pipe or oil rod, a guiding mechanism 8 is arranged on the frame. The guiding mechanism 8 is arranged above the tong mechanism and the centering mechanism. The guiding mechanism 8 includes two second limiting plates 81 arranged in parallel along the horizontal direction and a second driving member. On one side of each of the two second limiting plates 81 close to each other, a lower pipe initial positioning groove 82 and a centering initial positioning groove 83 are provided. The second driving member is used to drive the two second limiting plates 81 to move synchronously towards each other or synchronously away from each other. When the two second limiting plates 81 are in contact, the two lower pipe initial positioning grooves 82 are located directly above the tong mechanism, and the two centering initial positioning grooves 83 are located directly above the centering mechanism. In this way, when centering the oil pipe (oil rod), first insert the oil pipe (oil rod) into the two centering initial positioning grooves 83 (due to the differences in the size and material of the oil pipe and the oil rod, sliding limiting blocks can be arranged at the two centering initial positioning grooves 83. When centering the oil rod, the two sliding limiting blocks move towards each other, making the distance between the initial positioning grooves 83 smaller to adapt to the initial positioning of the oil rod. When initially positioning the oil pipe, the two sliding limiting blocks move away from each other to adapt to the initial positioning of the oil pipe) to initially guide the oil pipe (oil rod) so that the oil pipe (oil rod) can smoothly enter the centering space. When screwing and lowering the oil pipe (oil rod), first insert the oil pipe (oil rod) into the two lower pipe initial positioning grooves 82 to initially guide the oil pipe (oil rod) so that the oil pipe (oil rod) can smoothly enter the tong mechanism.

[0029] As Figure 9As shown, in order to realize the driving of the two second limit plates 81, the guiding mechanism 8 includes a slide rail, and the two second limit plates 81 are slidably clamped on the slide rail. The second driving member includes a second push rod 84 and two second connecting rods 85. The second push rod 84 is set on the frame, and one end of the two second connecting rods 85 is rotatably set on the driving end of the second push rod 84. The other ends of the two second connecting rods 85 are respectively rotatably connected to the two second limit plates 81. The driving direction of the second push rod 84 is perpendicular to the extension direction of the slide rail. In this way, when the second push rod 84 works, the angle between the two second connecting rods 85 changes, so that the two second limit plates 81 move synchronously toward or away from each other.

[0030] In summary, the present application divides the clamping components into a clamping block 3 and a detachable clamp 31, and divides the centering components into a centering shell 61 and a detachable centering plate. When operating the oil pipe or oil rod, it is only necessary to replace the corresponding clamp 31 and the centering plate to carry out the work. Compared with replacing the entire module, the work efficiency is improved, and the centering mechanism and the large clamp mechanism are integrated on the frame, which improves the convenience of operation.

[0031] The above are only preferred embodiments of the present application, and the present invention is not limited to the above embodiments. It is understood that other improvements and variations directly derived or imagined by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included in the scope of protection of the present invention.

Claims

1. A pipe and rod integrated workover device, characterized in that: It includes a frame, on which a large clamp mechanism and a centering mechanism are provided, and the centering mechanism is arranged on one side of the large clamp mechanism; The large clamp mechanism includes a main clamp (1), a back clamp (2) and a driving mechanism. The main clamp (1) is arranged directly above the back clamp (2). Two relatively arranged clamping blocks (3) are provided on both the main clamp (1) and the back clamp (2). Clamping heads (31) are provided on the clamping blocks (3). The clamping heads (31) are replaceably arranged on the clamping blocks (3). The clamping heads (31) include a tubing clamp head and a rod clamp head. The driving mechanism is used to drive the main clamp (1) to move up and down; The centering mechanism includes two centering modules (6). The centering module (6) includes a centering housing (61), a centering plate and a first driving component. The two centering housings (61) are arranged vertically opposite to each other. A centering space is formed between the two centering housings (61). The centering plate is arranged on the side of the centering housing (61) close to the centering space. The centering plate is replaceably arranged on the centering housing (61). The centering plate includes a tubing centering plate (4) and a rod centering plate (5). The tubing centering plate (4) is used to limit the tubing, and the rod centering plate (5) is used to limit the rod. The first driving component is used to drive the centering housing (61) to approach or move away from the other centering housing (61).

2. The pipe-rod integrated workover device according to claim 1, wherein: Two positioning grooves (32) are provided on the clamping block (3), and the clamping head (31) is clamped at the positioning grooves (32).

3. The pipe-rod integrated workover device according to claim 2, wherein: The clamping head (31) is fixed to the clamping block (3) by bolts.

4. The pipe-rod integrated workover device according to claim 1, wherein: On one side of the two tubing centering plates (4) close to each other, a first guiding groove (41) and a first centering groove (42) extending in the vertical direction are provided. The first guiding groove (41) is arranged at the top of the first centering groove (42), and the top opening of the first guiding groove (41) is larger than the bottom opening.

5. The integrated tubing and rod workover device according to claim 1, characterized in that: The tubing centering plate (4) is fixed to the centering housing (61) by bolts.

6. The integrated tubing and rod workover device according to claim 1, wherein: The rod centering plate (5) includes a guiding plate (51) and a first limiting plate (52) arranged at the bottom of the guiding plate (51). The guiding plate (51) and the first limiting plate (52) are rotatably connected. The top end of the guiding plate (51) is rotatably arranged on the centering housing (61). Elastic members (7) are provided on one side of the bottom ends of the guiding plate (51) and the first limiting plate (52) away from the centering space; A second guiding groove (53) is provided on one side of the guiding plate (51) close to the centering space, and a second centering groove (54) extending in the vertical direction is provided on one side of the first limiting plate (52) close to the centering space. The top opening of the second guiding groove (53) is larger than the bottom opening.

7. The pipe-rod integrated workover device according to claim 6, characterized in that: Two upward-opening clamping grooves (62) are provided on the centering housing (61). Two rotating shafts (55) are provided on the guiding plate (51), and the two rotating shafts (55) are respectively arranged in the two clamping grooves (62).

8. The pipe-rod integrated workover device according to claim 1, characterized in that: The first driving assembly includes a first push rod (63) and two first link rods (64). The two first link rods (64) are arranged in parallel. One end of each of the two first link rods (64) is rotatably arranged on the centering housing (61), and the other end of each of the two first link rods (64) is rotatably arranged on the frame. The first push rod (63) is rotatably arranged on the frame, and the driving end of the first push rod (63) is rotatably connected to one of the first link rods (64).

9. The pipe-rod integrated workover device according to claim 1, wherein: A guiding mechanism (8) is arranged on the frame. The guiding mechanism (8) is arranged above the tong mechanism and the centering mechanism. The guiding mechanism (8) includes two second limiting plates (81) arranged in parallel along the horizontal direction and a second driving member. On one side of each of the two second limiting plates (81) close to each other, a lower pipe initial positioning groove (82) and a centering initial positioning groove (83) are formed. The second driving member is used to drive the two second limiting plates (81) to move towards each other synchronously or move away from each other synchronously. When the two second limiting plates (81) are in contact, the two lower pipe initial positioning grooves (82) are located directly above the tong mechanism, and the two centering initial positioning grooves (83) are located directly above the centering mechanism.

10. The pipe-rod integrated workover device according to claim 9, wherein: The guiding mechanism (8) includes a slide rail. The two second limiting plates (81) are slidably clamped on the slide rail. The second driving member includes a second push rod (84) and two second link rods (85). The second push rod (84) is arranged on the frame. One end of each of the two second link rods (85) is rotatably arranged at the driving end of the second push rod (84), and the other end of each of the two second link rods (85) is respectively rotatably connected to the two second limiting plates (81). The driving direction of the second push rod (84) is perpendicular to the extending direction of the slide rail.

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