Plumb taking-out tool for lifting rope of oil pumping unit

Abstract

The invention relates to the technical field of daily maintenance of oil pumping units, and discloses an oil pumping unit hair braid plumb bob taking-out tool which comprises a center body and a stress ring, external threads are formed in the outer side of the center body, internal threads matched with the external threads are formed in the inner side of the stress ring, three symmetrically-formed open grooves are formed in the inner side of the center body, and the center body and the stress ring are integrally formed. And pull claws are slidably connected to the interiors of the open grooves, springs are fixedly connected to one ends of the pull claws, lower check blocks are fixedly connected to one ends of the two springs, and a pull rod is fixedly connected to one end of one pull claw. Through the mutual cooperation of the structures of the central body, the stress ring, the pull claw and the spring, the difficult problem of taking out the plumb bob is solved. The tool is simple in structure, high in practicability, convenient to install, fast and convenient, one person can complete work, potential safety hazards of falling in the high altitude and rope bending and braid bending in the replacement process are eradicated, and the tool has wide popularization value.

Description

Technical Field

[0001] The present invention relates to the technical field of daily maintenance of pumping units, and specifically to a tool for removing the plumb bob of the pumping unit's hair braid. Background Art

[0002] Oil production by pumping units is currently the most important mechanical oil production method. The hair braid of the pumping unit is a flexible component that bears the load and transmits power in the pumping equipment. During the pumping process, it moves up and down reciprocally with the load of the downhole rod string and the liquid column above the pump, and is prone to wear and aging, burring and strand breakage. In such a situation, pumping must be stopped immediately for replacement. Affected by the field working environment factors and the load of the oil well, the plumb bob of the hair braid of the pumping unit is clamped tightly in the donkey head suspension disc or rusted in the plumb bob hole of the suspension disc. Most of the existing technologies use pipe wrenches to remove the plumb bob of the hair braid. However, the defect of using a pipe wrench to adjust the length of the hair braid is that the plumb bob is difficult to grasp and prone to slipping, which will cause potential safety hazards of the operator falling from a height. And the force application direction is not concentrated, there is force decomposition, and part of the force is converted into a reaction force, wasting manpower and material resources. Therefore, technical personnel in this field have proposed a tool for removing the plumb bob of the pumping unit's hair braid to solve the above problems. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the present invention provides a tool for removing the plumb bob of the pumping unit's hair braid, which solves the problems in the prior art that when removing and replacing the plumb bob of the hair braid, the plumb bob is difficult to grasp and prone to slipping, which will cause potential safety hazards of the operator falling from a height.

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: A tool for removing the plumb bob of the pumping unit's hair braid includes a central body and a force-bearing ring. The outer side of the central body is provided with external threads, and the inner side of the force-bearing ring is provided with internal threads that match the external threads. The inner side of the central body is provided with three symmetrically arranged slots, and a claw is slidably connected inside the slot. One end of the claw is fixedly connected to a spring, and one end of two of the springs is fixedly connected to a lower stop block, and one end of one of the claws is fixedly connected to a pull rod.

[0005] Preferably, the central body is circular on the outside and has a V-shaped structure inside, with a smaller diameter at the upper part and a larger diameter at the lower part inside, and the diameter of the upper small part is larger than the diameters of all the plumb bobs of the current pumping unit suspension devices.

[0006] Preferably, one of the springs is sleeved outside the pull rod, and the end of the pull rod away from the upper stop block penetrates through the inner wall of the slot and extends to the outside of the central body.

[0007] Preferably, three upper stop blocks are fixedly connected to the inner side of the central body, and the cross-sectional area of the upper stop block is smaller than the cross-sectional area of the claw.

[0008] Preferably, a handle is fixedly connected to the outside of the force-bearing ring, and anti-slip patterns are provided on the outside of the handle.

[0009] Preferably, the three lower stoppers are respectively fixedly connected to the inner walls of the three slots at corresponding positions.

[0010] Preferably, a plurality of threaded holes are equidistantly formed on the outside of the central body. The inner wall of the threaded hole is threadedly connected with a locking nut, and one end of the locking nut abuts against a locking block.

[0011] Preferably, the longitudinal section of the locking block is trapezoidal, and one end of the locking block is rotatably installed on the inner wall of the central body.

[0012] A method for using a tool for removing a lead weight of a sucker rod pigtail includes the following steps: S1. Place the tool at the bottom of the suspension clamp, and pass the pigtail lead weight through the central body. When the pigtail lead weight penetrates from the upper part of the central body, the spring moves downward and is in a compressed state. When the penetration stops, under the reset action of the spring, the elastic force acts on the pull claw, so that the pull claw can firmly grip the pigtail lead weight, making the pull claw, the lead weight and the central body act as a whole. S2. Rotate the handle, so that the force-bearing ring rotates up and down under the action of the handle. When the force-bearing ring moves to the lower plate of the suspension clamp and stops moving upward, a reaction force is formed, thereby generating a downward pulling force on the pigtail lead weight, similar to the effect of a screw jack, and jacking out the pigtail lead weight. S3. Finally, pull the pull rod outwards to compress one of the springs, and the pull claw will move along the inner wall of the slot, and the tool can be quickly separated from the pigtail lead weight. The structure is simple, the operation is convenient.

[0013] The present invention provides a tool for removing a pigtail lead weight of a sucker rod. It has the following beneficial effects: The present invention is applicable to the removal of the pigtail rope head of all current beam pumping units and the adjustment of the length of the pigtail rope. It reduces the number of operators and the labor intensity of employees. The efficiency is increased by more than 10 times, and during the operation process, the types of tools used are reduced, and the loss is reduced. The problem of lead weight removal is successfully solved. The tool has a simple structure, strong practicability, convenient installation, fast and convenient operation. One person can complete the work, eliminating the unsafe hidden dangers of falling from a high altitude and bending the pigtail rope during the replacement process, and has wide popularization value.

[0014] By adopting the principle of a screw jack, the present invention makes the force application point concentrated at one position, ensuring that the applied force can accurately act on the pigtail, solving the problems of non-concentrated force application direction, force decomposition and reaction force existing in traditional tools, thereby improving the efficiency, accuracy and success rate of removing the pigtail. Description of the Drawings

[0015] Figure 1 Isometric view of the present invention; Figure 2 Schematic diagram of the upper stop structure of the present invention.

[0016] Wherein, 1, central body; 2, force-bearing ring; 3, upper stop; 4, pull claw; 5, spring; 6, lower stop; 7, pull rod; 8, handle; 9, locking block; 10, locking nut. Detailed implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0018] Please refer to the attached Figure 1 -attached Figure 2 As shown in the attached drawings, the embodiment of the present invention provides a tool for removing the plumb bob of the pony tail of a pumping unit, which includes a central body 1 and a force-bearing ring 2. The outer side of the central body 1 is provided with an external thread, and the inner side of the force-bearing ring 2 is provided with an internal thread matching the external thread. The inner side of the central body 1 is provided with three symmetrically arranged slots, and a pull claw 4 is slidably connected inside the slots. One end of the pull claw 4 is fixedly connected to a spring 5. One end of two of the springs 5 is fixedly connected to a lower stop 6, and one end of one of the pull claws 4 is fixedly connected to a pull rod 7.

[0019] Specifically, pass the plumb bob of the pony tail through the central body 1. When the plumb bob of the pony tail penetrates from the upper part of the central body 1, the spring 5 moves downward and the spring 5 is in a compressed state. When the penetration stops, under the reset action of the spring 5, the elastic force acts on the pull claw 4, so that the pull claw 4 can firmly grip the plumb bob of the pony tail, making the pull claw 4, the plumb bob and the central body 1 act as a whole. By rotating the handle 8, the force-bearing ring 2 rotates up and down under the action of the handle 8. When the force-bearing ring 2 moves to the lower plate of the suspension device, when the upward movement stops and a reaction force is formed, a downward pulling force is generated on the plumb bob of the pony tail, similar to the effect of a screw jack, and the plumb bob of the pony tail is jacked out. The force application point is concentrated at one position, ensuring that the applied force can accurately act on the pony tail, solving the problems of non-concentrated force application direction, force decomposition and reaction force existing in traditional tools, thereby improving the efficiency, accuracy and success rate of removing the pony tail.

[0020] Please refer to the attached Figure 1 -attached Figure 2 As shown in the attached drawings, the central body 1 is circular on the outside and is provided with a V-shaped structure inside. The inside is smaller in diameter at the upper part and larger in diameter at the lower part, and the small diameter at the upper part is larger than the diameter of all the plumb bobs of the suspension devices of the current pumping units.

[0021] Specifically, due to the design of the V-shaped structure with a smaller upper diameter and a larger lower diameter, the central body 1 is more stable during use. This design can ensure a larger contact area between the central body 1 and the plumb bob of the pumping unit suspension, thereby increasing the friction between them and improving the stability of the entire system.

[0022] Please refer to the appendix Figure 1 , where one spring 5 is sleeved outside the pull rod 7, and one end of the pull rod 7 away from the upper stop block 3 penetrates through the inner wall of the slotted opening and extends outside the central body 1.

[0023] Specifically, by pulling the pull rod 7 outwards, one spring 5 is compressed, and the claw 4 will move along the inner wall of the slotted opening, and the tool can be quickly separated from the plumb bob of the wire rope, with a simple structure and convenient operation.

[0024] Please refer to the appendix Figure 1 - appendix Figure 2 , three upper stop blocks 3 are fixedly connected to the inner side of the central body 1, and the cross-sectional area of the upper stop block 3 is smaller than the cross-sectional area of the claw 4.

[0025] Specifically, the function of the upper stop block 3 is to block the action of the claw 4 to prevent the claw 4 from extending outwards under the action of the spring 5. The reason why the cross-sectional area of the upper stop block 3 is smaller than the cross-sectional area of the claw 4 is to facilitate the smooth penetration of the wire rope of the pumping unit into the cavity inside the central body 1 without being blocked by the upper stop block 3.

[0026] Please refer to the appendix Figure 1 - appendix Figure 2 , a handle 8 is fixedly connected to the outside of the force-receiving ring 2, and anti-slip lines are provided on the outside of the handle 8.

[0027] Specifically, it is convenient for the user to rotate the handle 8 outwards, causing the force-receiving ring 2 to rotate.

[0028] Please refer to the appendix Figure 1 , three lower stop blocks 6 are respectively fixedly connected to the inner walls of three corresponding slotted openings.

[0029] Specifically, the function of the lower stop block 6 is to fix the spring 5, ensuring the cooperation of structures such as the claw 4 and the locking block 9.

[0030] Please refer to the appendix Figure 1 - appendix Figure 2 , a plurality of threaded holes are equidistantly arranged on the outside of the central body 1, the inner wall of the threaded hole is threadedly connected with a locking nut 10, and one end of the locking nut 10 abuts against a locking block 9.

[0031] Specifically, the model of the lock nut 10 is the M10 series. The rotation of the lock nut 10 causes the lock block 9 to move.

[0032] Please refer to the appendix Figure 2 , the longitudinal section of the lock block 9 is trapezoidal, and one end of the lock block 9 is rotatably installed on the inner wall of the central body 1.

[0033] Specifically, when the braided plumb bob extends into the interior of the central body 1, by rotating the lock nut 10, the lock block 9 moves, so that the outer wall of the braided plumb bob can be contacted by the lock block 9, further improving the stability when fixing the braided plumb bob and facilitating people's use.

[0034] A method for using a tool for removing a braided plumb bob of a pumping unit includes the following steps: S1. Place this tool at the bottom of the suspension clamp. Pass the braided plumb bob through the central body 1. When the braided plumb bob penetrates from the upper part of the central body 1, the spring 5 moves downward and the spring 5 is in a compressed state. When the penetration stops, under the reset action of the spring 5, the elastic force acts on the pull claw 4, so that the pull claw 4 can firmly grip the braided plumb bob, making the pull claw 4, the plumb bob and the central body 1 act as a whole; S2. Rotate the handle 8, so that the force-receiving ring 2 rotates up and down under the action of the handle 8. When the force-receiving ring 2 moves to the lower plate of the suspension clamp and the upward movement stops and then forms a reaction force, a downward pulling force is generated on the braided plumb bob, similar to the effect of a screw jack, to eject the braided plumb bob; S3. Finally, by pulling the pull rod 7 outwards, one of the springs 5 is compressed, and the pull claw 4 will move along the inner wall of the slot, and the tool can be quickly separated from the braided plumb bob, with a simple structure and convenient operation.

[0035] It has been applied to 70 wells in the first district of the Second Oil Production Plant, successfully removing the tail rope head of the pony tail rope, with symmetrical lengths on both sides and a 100% success rate in removing the plumb bob. It is applicable to the removal of the tail rope head of the pony tail rope of all current beam pumping units and the adjustment of the length of the rope braid, reducing the number of operators and labor intensity of employees, and increasing efficiency by more than 10 times. Long-term prediction. This tool is universal and suitable for removing the plumb bob heads of pony tail ropes of different models and specifications of pumping units. Without changing the structure of the suspension device, it can quickly and conveniently achieve the removal and adjustment of the plumb bob of the pony tail rope. After the application of the tool, the work efficiency is improved, the labor intensity of workers is reduced, and potential safety hazards are eliminated, with significant economic benefits. The application technology is perfect, the on-site application operation standard of the tool is simple to learn and safe and standardized, personal safety is guaranteed, and the operation time for removing and adjusting the plumb bob of the pony tail rope is reduced by about 30 minutes, resulting in significant economic and social benefits. This tool has a fast adjustment speed and a large moving force, and the adjustment meets the inspection requirements. Its structure is simple, operation is convenient, and safety is strong. Therefore, it has wide application value and can be popularized and used in oil fields, with prominent economic and social benefits.

[0036] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lead hammer removal tool for the pony tail of a pumping unit, comprising a central body (1) and a force-receiving ring (2), characterized in that, The outer side of the central body (1) is provided with external threads, the inner side of the force-bearing ring (2) is provided with internal threads matching the external threads, the inner side of the central body (1) is provided with three symmetrically arranged slots, a claw (4) is slidably connected inside the slot, one end of the claw (4) is fixedly connected to a spring (5), one end of two of the springs (5) is fixedly connected to a lower stop block (6), and one end of one of the claws (4) is fixedly connected to a pull rod (7).

2. The lead hammer removal tool for the sucker rod bridle according to claim 1, characterized in that, The central body (1) is circular on the outside and has a V-shaped structure inside, with a smaller diameter at the upper part and a larger diameter at the lower part inside, and the diameter of the upper small part is larger than the diameter of the plumb bob of all current pumping unit suspension connectors.

3. A lead hammer removal tool for the sucker rod bridle according to claim 1, characterized in that, One of the springs (5) is sleeved outside the pull rod (7), and the end of the pull rod (7) away from the upper stop block (3) penetrates through the inner wall of the slot and extends to the outside of the central body (1).

4. A plumb bob removal tool for the pony rod of a pumping unit according to claim 1, characterized in that, Three upper stop blocks (3) are fixedly connected to the inner side of the central body (1), and the cross-sectional area of the upper stop block (3) is smaller than the cross-sectional area of the claw (4).

5. The lead hammer removal tool for the sucker rod bridle according to claim 1, wherein A handle (8) is fixedly connected to the outside of the force-bearing ring (2), and anti-slip threads are provided on the outside of the handle (8).

6. The extractor tool for the lead hammer of the sucker rod horsehead according to claim 1, characterized in that The three lower stop blocks (6) are respectively fixedly connected to the inner walls of the three corresponding slots.

7. The lead hammer removal tool for the sucker rod horsehead according to claim 1, characterized in that, A plurality of threaded holes are equidistantly arranged on the outer side of the central body (1), a locking nut (10) is threadedly connected to the inner wall of the threaded hole, and one end of the locking nut (10) abuts against a locking block (9).

8. A tool for removing the plumb bob of the sucker rod pigtail according to claim 7, characterized in that, The longitudinal section of the locking block (9) is trapezoidal, and one end of the locking block (9) is rotatably installed on the inner wall of the central body (1).

9. A method for using a tool for removing the plumb bob of the sucker rod pigtail, according to any one of claims 1-8, a tool for removing the plumb bob of the sucker rod pigtail, characterized in that, It includes the following steps: S1. Place this tool at the bottom of the suspension connector, pass the pony braid plumb bob through the central body (1). When the pony braid plumb bob penetrates from the upper part of the central body (1), the spring (5) moves downward and the spring (5) is in a compressed state. When the penetration stops, under the reset action of the spring (5), the elastic force acts on the claw (4) so that the claw (4) can firmly grip the pony braid plumb bob, making the claw (4), the plumb bob and the central body (1) act as a whole; S2. Rotate the handle (8) to make the force-bearing ring (2) rotate up and down under the action of the handle (8). When the force-bearing ring (2) moves to the lower plate of the suspension connector and the upward movement stops and then forms a reaction force, a downward pulling force is generated on the pony braid plumb bob, similar to the effect of a screw jack, to push out the pony braid plumb bob; S3. Finally, by pulling the pull rod (7) outwards, one of the springs (5) is compressed, and the claw (4) will move along the inner wall of the slot, and the tool can be quickly separated from the pony braid plumb bob. The structure is simple and the operation is convenient.

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