A well repair operation sucker rod hanger connecting device
By designing a sucker rod hook connection device, the problem of frequent replacement of tubing and sucker rod during well workover operations was solved, enabling rapid conversion, reducing labor intensity and safety risks, and improving operational efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA PETROLEUM & CHEMICAL CORP
- Filing Date
- 2025-08-26
- Publication Date
- 2026-06-16
AI Technical Summary
In existing oil and gas well workover operations, the switching between tubing and sucker rod tripping operations requires frequent changes of lifting tools, which increases labor intensity and safety risks, and reduces operational efficiency.
A well workover operation sucker rod hook connection device was designed, including a first connector and a second connector, which are connected into one unit through a connecting part to realize the rapid conversion of tubing and sucker rod lifting and lowering operations. It adopts a coupling and hook cylinder structure, combined with a limiting structure and a buffer structure to ensure safe, labor-saving and efficient construction.
It enables rapid switching between tubing and sucker rod raising and lowering processes, reducing labor intensity and improving operational safety and efficiency.
Smart Images
Figure CN224363904U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technology of auxiliary devices for oil and gas well workover, and in particular to a sucker rod hook connection device for workover operations. Background Technology
[0002] During well workover operations in oil and gas wells in oilfield development, it is usually necessary to lift and lower tubing and sucker rods. During the transition between the tubing and sucker rod lifting operations, the lifting equipment needs to be changed to meet the requirements of the tubing and sucker rod lifting operations.
[0003] Currently, when raising or lowering sucker rods, the lifting lugs and shackles suspended from the traveling block hook are first removed, and then the sucker rod hook with the wire rope coiled on it is hooked back into the lifting lugs. When switching to raising or lowering tubing, the sucker rod hook with the wire rope coiled on it needs to be replaced with a lifting shackle. This process is repeated, which not only increases the labor intensity of the workers, but also increases safety risks and reduces work efficiency. Utility Model Content
[0004] To address the problems in the background art, this utility model provides a sucker rod hook connection device for well workover operations.
[0005] The technical solution adopted by this utility model is: a sucker rod hook connection device for well workover operations, comprising a first connecting body, a second connecting body, and a connecting part. The first connecting body is used to connect the tubing clamp; the second connecting body is used to connect the sucker rod hook; the connecting part is disposed between the first connecting body and the second connecting body, and connects the first connecting body and the second connecting body into one unit.
[0006] The connecting device of this utility model can quickly complete the conversion between the raising and lowering of the tubing and sucker rod, and has the characteristics of quick installation, safety and labor saving, and high construction efficiency.
[0007] In a preferred embodiment of this utility model, the first connecting body is a coupling, which includes a coupling body and a support platform installed at one end of the coupling body. When connected to the oil pipe hanger, the oil pipe hanger hugs the periphery of the coupling body, and the support platform abuts against the end face of the oil pipe hanger.
[0008] In a preferred embodiment of this utility model, the second connecting body is a hook cylinder, the end of which is provided with a U-shaped connector, and the U-shaped connector is provided with a bearing pin. The bearing pin is connected to the connecting end pin of the sucker rod hook and constrains the connecting end within the U-shaped connector.
[0009] In a further preferred embodiment of this utility model, the bearing pin is provided with a limiting structure.
[0010] In a further preferred embodiment of this utility model, the width of the U-shaped groove of the U-shaped connector is greater than the width of the connecting end.
[0011] In an optional embodiment of this utility model, the connecting part includes a connecting rod, and the two ends of the connecting rod are respectively fixedly connected to the first connecting body and the second connecting body.
[0012] In an optional embodiment of this utility model, the connecting part includes a connecting rod, one end of which is fixedly connected to one of the first connecting body and the second connecting body, and the other end of which is movably connected to the other.
[0013] In a further preferred embodiment of this utility model, the connecting rod is provided with a buffer structure at the movable connection end with the first connecting body or the second connecting body.
[0014] In an optional embodiment of this utility model, the connecting part includes a connecting rod, one end of which passes through the first connecting body and is fixedly connected to the locking member, the second connecting body has a pressure cap at one end facing the first connecting body, the other end of the connecting rod passes through the pressure cap and extends into the interior of the second connecting body, and a spring is provided between the pressure cap and the step at the end of the connecting rod.
[0015] In a further preferred embodiment of this utility model, the pressure cap is provided with a safety locking mechanism.
[0016] Beneficial effects:
[0017] The sucker rod hook connection device for well workover operations provided by this utility model can quickly complete the conversion between tubing and sucker rod lifting and lowering operations, and has the characteristics of quick installation, safety and labor saving, and high construction efficiency. Attached Figure Description
[0018] Figure 1 This is an exploded structural diagram of the connecting device of this utility model;
[0019] Figure 2 This is a schematic diagram of the internal structure of the connecting device of this utility model;
[0020] Figure 3 This is a diagram showing the usage state of the connecting device of this utility model.
[0021] exist Figures 1-3 In the middle, 1. Locking component; 2. Coupling; 21. Coupling body; 22. Bearing platform; 3. Pressure cap; 4. Buffer component; 5. Connecting rod; 6. Hook cylinder; 61. U-shaped joint; 7. Bearing pin; 200. Oil pipe hanger; 300. Sucker rod hook. Detailed Implementation
[0022] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.
[0023] In this utility model, a connecting device for a sucker rod hook 300 during well workover operations is provided, such as... Figure 1 As shown, the system includes a first connecting body, a second connecting body, and a connecting portion. The first connecting body is used to connect to the tubing clamp 200; the second connecting body is used to connect to the sucker rod hook 300; the connecting portion is located between the first connecting body and the second connecting body, connecting the first connecting body and the second connecting body into one unit. The first connecting body and the second connecting body can be fixedly connected to the connecting portion or movably connected, as will be explained in the following embodiments.
[0024] In a specific embodiment of this utility model, the first connecting body is a coupling 2, which includes a coupling body 21 and a support platform 22 installed at one end of the coupling body 21. The second connecting body is a hook cylinder 6, with a U-shaped connector 61 at one end of the hook cylinder 6. A support pin 7 is provided on the U-shaped connector 61, and the support pin 7 is connected to the connecting end pin of the sucker rod hook 300, thus constraining the connecting end within the U-shaped connector 61. The connecting part is a connecting rod 5, with both ends of the connecting rod 5 fixedly connected to the coupling 2 and the hook cylinder 6, respectively. When performing sucker rod lifting and lowering, such as Figure 3 As shown, the tubing clamp 200 is fastened to the coupling 2, and the bearing platform 22 abuts against the end face of the tubing clamp 200 to support the weight of the lower end. The upper end of the sucker rod hook 300 is inserted into the U-shaped groove at the lower end of the U-shaped connector 61 and connected to the connecting end pin of the sucker rod hook 300 through the bearing pin 7. When performing tubing jacking or unjacking, first remove the bearing pin 7 to remove the sucker rod hook 300, then open the tubing clamp 200 and remove the connecting device, which can quickly switch to the tubing jacking or unjacking operation.
[0025] It is worth noting that the coupling 2 is a preferred embodiment of the first connecting body in this embodiment. In other embodiments of this utility model, the first connecting body can also be other structural components, as long as they can be connected to the tubing clamp 200. This utility model does not make specific limitations in this regard. Similarly, the hook cylinder 6 is a preferred embodiment of the second connecting body in this embodiment. In other embodiments of this utility model, the second connecting body can also be connected to the sucker rod hook 300 in other ways, such as the sucker rod hook 300 being threadedly connected to the second connecting body. This utility model also does not make specific limitations in this regard.
[0026] In a preferred embodiment of this utility model, the bearing pin 7 is provided with a limiting structure (not shown in the figure). By providing a limiting structure on the bearing pin 7, the bearing pin 7 can be prevented from moving.
[0027] In one specific embodiment, the limiting structure includes a safety pin insertion hole and a safety pin provided on the bearing pin 7. After the bearing pin 7 is inserted into the connecting end of the sucker rod hook 300, the safety pin is inserted into the safety pin insertion hole, which can prevent the bearing pin 7 from moving.
[0028] In another specific embodiment, the limiting structure includes a threaded structure at the end of the bearing pin 7 and a nut that mates with the threaded structure. After the bearing pin 7 is inserted into the connecting end of the sucker rod hook 300, the bearing pin 7 is locked and fixed by the nut, which can also play a limiting role.
[0029] The above two structures are merely exemplary descriptions of limiting structures. In other embodiments of this utility model, other forms of limiting structures may also be used, and this utility model does not specifically limit them.
[0030] In another embodiment of this invention, the width of the U-groove of the U-shaped connector 61 is greater than the width of the connecting end. This allows for a pre-existing allowance in the U-groove cut to prevent damage to the sucker rod string during movement of the floating system.
[0031] In another embodiment of this utility model, the connecting part includes a connecting rod 5. One end of the connecting rod 5 passes through the coupling 2 and is fixedly connected to the locking member 1. A pressure cap 3 is provided at one end of the hook cylinder 6 facing the coupling 2. The other end of the connecting rod 5 passes through the pressure cap 3 and extends into the interior of the hook cylinder 6. A spring is provided between the pressure cap 3 and the step at the end of the connecting rod 5. In this embodiment, the connecting rod 5 can move up and down not only relative to the coupling 2, but also relative to the hook cylinder 6. At the same time, the spring between the pressure cap 3 and the step at the end of the connecting rod 5 can buffer the weight impact from the sucker rod, thus protecting both the connecting device and the sucker rod. In other embodiments of this utility model, other buffering members 4, such as buffer pads, can also be used. This utility model does not specifically limit the use of these buffering members.
[0032] In addition, in the above embodiment, the pressure cap 3 is provided with a safety locking mechanism (not shown in the figure). By providing a safety locking mechanism, the rod can be prevented from coming out of the hook bucket. The safety locking mechanism here can be a limit baffle, a limit pin, or other structures.
[0033] Of course, in other embodiments of this utility model, the connecting part includes a connecting rod 5, one end of which is fixedly connected to one of the first connecting body and the second connecting body, and the other end of which is movably connected to the other. Simultaneously, a buffer structure is provided at the movably connected end of the connecting rod 5 to the first or second connecting body. In one scenario, when one end of the connecting rod 5 is fixedly connected to the first connecting body and the other end is movably connected to the second connecting body, the movably connected structure and the buffer structure can adopt the same hook 6, pressure cap 3, and spring structure as described above, which will not be specifically described here. In another scenario, one end of the connecting rod 5 is fixedly connected to the second connecting body and the other end is movably connected to the first connecting body, such as using the structure described above where the connecting rod 5 passes through the coupling 2 and connects to the locking member 1. In this case, the buffer structure can be provided between the locking member 1 and the coupling 2.
[0034] The above description is merely an illustrative embodiment of this utility model and is not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model.
Claims
1. A sucker rod hook connection device for well workover operations, characterized in that, Includes a first connector, a second connector, and a connecting portion. in, The first connector is used to connect to the tubing hanger (200); The second connector is used to connect the sucker rod hook (300); The connecting part is disposed between the first connecting body and the second connecting body, and connects the first connecting body and the second connecting body into one unit.
2. The well workover operation sucker rod hook connection device according to claim 1, characterized in that, The first connecting body is a coupling (2), which includes a coupling body (21) and a support platform (22) installed at one end of the coupling body (21). When connected to the oil pipe clamp (200), the oil pipe clamp (200) hugs the periphery of the coupling body (21), and the support platform (22) abuts against the end face of the oil pipe clamp (200).
3. The well workover operation sucker rod hook connection device according to claim 1, characterized in that, The second connecting body is a hook cylinder (6), and the end of the hook cylinder (6) is provided with a U-shaped connector (61). The U-shaped connector (61) is provided with a bearing pin (7). The bearing pin (7) is connected to the connecting end pin of the sucker rod hook (300) and constrains the connecting end within the U-shaped connector (61).
4. The well workover operation sucker rod hook connection device according to claim 3, characterized in that, The bearing pin (7) is provided with a limiting structure.
5. A well workover operation sucker rod hook connection device according to claim 3, characterized in that, The width of the U-shaped groove of the U-shaped connector (61) is greater than the width of the connecting end.
6. The well workover operation sucker rod hook connection device according to claim 1, characterized in that, The connecting part includes a connecting rod (5), and the two ends of the connecting rod (5) are fixedly connected to the first connecting body and the second connecting body, respectively.
7. The well workover operation sucker rod hook connection device according to claim 1, characterized in that, The connecting part includes a connecting rod (5), one end of which is fixedly connected to one of the first connecting body and the second connecting body, and the other end of which is movably connected to the other.
8. A well workover operation sucker rod hook connection device according to claim 7, characterized in that, The connecting rod (5) has a buffer structure at the movable connection end with the first connecting body or the second connecting body.
9. A well workover operation sucker rod hook connection device according to claim 1, characterized in that, The connecting part includes a connecting rod (5), one end of which passes through the first connecting body and is fixedly connected to the locking member (1). The second connecting body has a pressure cap (3) at one end facing the first connecting body. The other end of the connecting rod (5) passes through the pressure cap (3) and extends into the interior of the second connecting body. A buffer member (4) is provided between the pressure cap (3) and the step at the end of the connecting rod (5).
10. A well workover operation sucker rod hook connection device according to claim 9, characterized in that, The pressure cap (3) is equipped with a safety locking mechanism.