Safe logging perforation pulley
By incorporating support rods and socket structures into the logging pulley, combined with counterweights and threaded connections, the stability issue during hoisting of the logging pulley was resolved, resulting in greater operational stability and flexibility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAN YINGTEMING ELECTROMECHANICAL TECH CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-05-19
AI Technical Summary
Existing logging pulleys have low stability when lifted by the sling, and are prone to swaying, which can cause the cable to get stuck in the gap, affecting the normal progress of perforation operations.
Multiple support rods are installed on the side of the upright plate, and through-holes are opened above and below the outer frame. The outer frame and pulley are fixed by the support rods and through-holes. Combined with counterweights and threaded connections, stability is improved and shaking is prevented.
It achieves stable fixation of the logging pulley at a suitable height and position, avoids cable jamming, enhances stability during lifting, and retains the function of flexible adjustment.
Smart Images
Figure CN224260321U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pulley technology, specifically a safe logging perforation pulley. Background Technology
[0002] Perforation is an operation that uses special shaped charge equipment to explosively open a hole in a predetermined layer of the wellbore, allowing fluids from the formation to enter. It is widely used in oil and gas fields and coal fields, and sometimes in water extraction. Most oil fields commonly use shaped charge perforation equipment. In the history of perforation, bullet-type perforators have been used, and some large oil companies abroad also use water flow perforators. Logging pulleys are a special piece of equipment used in logging, perforation, and wellbore coring operations. They are mainly used to change the direction of the cable. When installing perforation equipment, the cable is guided by the logging pulley as it is lowered into the well.
[0003] Most pulleys used in the field are suspended at a suitable height by slings. Although adjusting the height of the pulley is relatively convenient, the pulley is prone to wobbling due to its low stability when suspended by slings, which can easily cause it to get stuck in gaps when guiding cables. Therefore, we propose a safe logging perforation pulley. Utility Model Content
[0004] The purpose of this utility model is to provide a safe logging perforation pulley. By setting multiple support rods on the side of a vertical plate and opening through slots above and below the outer frame on which the pulley is installed, the outer frame can be positioned at a suitable height and the support rods can pass through the slots to fix the outer frame and pulley, improving stability during use and preventing shaking that could cause the cable to get stuck. At the same time, it also retains the function that the outer frame and pulley can be removed and flexibly lifted by slings, thus solving the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a safe logging perforation pulley, comprising a vertical plate and an outer frame, wherein a pulley disc is rotatably installed in the middle of the inner part of the outer frame, a hanging ring is welded and fixed to the top of the outer frame, and through-holes are provided on the outer frame surface above and below the pulley disc; a counterweight is fixed to the bottom of the vertical plate, and multiple support rods are equidistantly fixed to the side surface of the vertical plate, wherein two adjacent support rods pass through the through-holes above and below the outer frame respectively, so that the outer frame is vertically placed on the side of the vertical plate and supported by the support rods.
[0006] By adopting the above technical solutions, the outer frame and pulley can be flexibly suspended at a suitable height and position using traditional methods. The outer frame and pulley can also be fixed at a suitable height on the side of the upright plate using support rods and upright plates, which has higher stability and avoids shaking that could cause cables to get stuck in the gaps.
[0007] Optionally, a crossbar and a counterweight are also provided. A collar is connected above the counterweight, through which the crossbar can pass. The diameter of the crossbar is equal to the diameter of the support rod.
[0008] By adopting the above technical solution, when the outer frame and pulley are lifted for use, the counterweight can be connected to the bottom of the outer frame through the crossbar and the collar to counterweight it, making the device more stable and reducing swaying.
[0009] Optionally, a stop block is fixed at one end of the crossbar, and the outer ring of the crossbar and the outer ring of the support rod at the other end of the stop block are both threaded, so that a nut can be screwed onto the outer ring of the end of the crossbar or the support rod.
[0010] By adopting the above technical solution, after the crossbar or support rod passes through the slot of the outer frame, a nut is screwed onto the end of the crossbar or support rod, which can play a role in preventing the outer frame from slipping.
[0011] Optionally, the outer ring of the support rod has two first annular grooves, the spacing of which is equal to the spacing between the two side plates of the outer frame.
[0012] By adopting the above technical solution, when the outer frame is subjected to a small lateral force, the two plates of the outer frame are supported in the first annular groove of the support rod, which has a certain positioning effect on the outer frame.
[0013] Optionally, the outer ring of the crossbar has two second annular grooves, the spacing of which is equal to the spacing between the two side plates of the outer frame.
[0014] By adopting the above technical solution, when the outer frame is subjected to a small lateral force, the two plates of the outer frame are supported in the second annular groove of the crossbar, which has a certain positioning effect on the crossbar and its bottom counterweight.
[0015] Optionally, the spacing between adjacent support rods on the surface of the upright plate is equal to the spacing between the upper and lower insertion ports of the outer frame.
[0016] By adopting the above technical solution, when the outer frame is placed at different heights, any two adjacent support rods can pass through the upper and lower slots of the outer frame at the same time.
[0017] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:
[0018] 1. The technical solution of this application provides multiple support rods on the side of a vertical plate and provides through-holes above and below the outer frame for mounting the pulley. This allows the outer frame to be positioned at a suitable height and the support rods to pass through the holes to fix the outer frame and pulley, improving stability during use and preventing shaking that could cause the cable to get stuck. At the same time, it retains the function that the outer frame and pulley can be removed and flexibly lifted for use using slings.
[0019] 2. The technical solution of this application also includes a detachable counterweight block, which can be connected to the bottom of the outer frame and pulley when using slings, increasing the counterweight of the outer frame and pulley and improving the stability during lifting.
[0020] 3. The technical solution of this application has a nut that can be screwed onto the end of the support rod or crossbar by means of a thread, so that the connection between the support rod or crossbar and the outer frame is limited and slippage is prevented. Attached Figure Description
[0021] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0022] Figure 1 This is a schematic diagram of the overall structure of the safety logging perforation pulley of this utility model;
[0023] Figure 2 This is a schematic diagram of the support rod structure of the safety logging perforation pulley of this utility model;
[0024] Figure 3 This is a schematic diagram of the counterweight and crossbar structure of the safety logging perforation pulley of this utility model;
[0025] Figure 4 This is a schematic diagram of the connection structure between the counterweight block and the outer frame of the safety logging perforation pulley of this utility model.
[0026] In the diagram: 1. Vertical plate; 11. Support rod; 111. First annular groove; 12. Counterweight seat; 2. Outer frame; 21. Pulley; 22. Hanging ring; 23. Insert; 3. Horizontal bar; 31. Second annular groove; 32. Stop block; 4. Counterweight block; 41. Collar; 5. Nut. Detailed Implementation
[0027] Please see Figure 1-4 This utility model provides a technical solution: a safe logging perforation pulley, which is similar to a traditional pulley in that it includes an outer frame 2, a pulley disc 21 is rotatably installed in the middle of the inner part of the outer frame 2, and a hanging ring 22 is welded and fixed to the top of the outer frame 2. In use, the sling is connected to the top of the outer frame 2 through the hanging ring 22, which can flexibly lift it to a suitable height or position for use, so that the cable of the perforation gun passes through the inner part of the outer frame 2 and passes through the pulley disc 21. The rotation of the pulley disc 21 is used to change the direction of the cable.
[0028] The difference from existing technology is that, in order to improve the stability of its lifting use, a through-hole 23 is opened on the surface of the outer frame 2 below the pulley 21. In addition, a crossbar 3 and a counterweight 4 are provided. A collar 41 is connected above the counterweight 4. The crossbar 3 can pass through the collar 41 and the through-hole 23. In use, the collar 41 above the counterweight 4 can be placed between the two through-holes 23 on the inner side of the lower part of the outer frame 2, so that the crossbar 3 passes through the through-hole 23 from left to right and passes through the collar 41 at the same time. In this way, the counterweight 4 can be connected to the lower part of the outer frame 2, increasing the counterweight of the outer frame 2 and the pulley 21, making it more stable when in use.
[0029] To provide a more stable operating condition, a vertical plate 1 is also provided. A counterweight 12 is fixed to the bottom of the vertical plate 1, which can provide vertical stability support for the vertical plate 1. Multiple support rods 11 are fixed horizontally at equal intervals on the side surface of the vertical plate 1, and through slots 23 are also opened on the surface of the outer frame 2 above the pulley 21. The diameter of the support rods 11 is the same as the diameter of the crossbar 3. In use, the outer frame 2 and the pulley 21 can be placed at the appropriate height required, and two adjacent support rods 11 on the side can be inserted through the slots 23 above and below the outer frame 2, respectively, so that the outer frame 2 is vertically placed on the side of the vertical plate 1 and supported by the support rods 11. In use, the fixed height of the outer frame 2 can be adjusted, sacrificing some flexibility for a more stable support effect, so as to achieve stable fixation of the outer frame 2.
[0030] The spacing between adjacent support rods 11 on the surface of the upright plate 1 is equal to the spacing between the upper and lower insertion ports 23 of the outer frame 2, so that any two adjacent support rods 11 on the side of the upright plate 1 can always pass through the two insertion ports 23 at the top and bottom of the outer frame 2 at the same time.
[0031] To improve stability when supported by the support rod 11, two first annular grooves 111 are formed around the outer ring of the support rod 11. The distance between the first annular grooves 111 is equal to the distance between the two side plates of the outer frame 2. When in use, the side plates of the outer frame 2 are supported and abut against the first annular grooves 111. When the outer frame 2 is subjected to a small lateral force, the grooves 111 have a positioning effect on the outer frame 2, making it more stable.
[0032] Similarly, two second annular grooves 31 are formed around the outer ring of the crossbar 3. The spacing of the second annular grooves 31 is equal to the spacing between the two side plates of the outer frame 2. When the counterweight 4 is used, the two side plates of the outer frame 2 support and abut against the second annular grooves 31. When the outer frame 2 is subjected to a small lateral force, it has a positioning effect on the crossbar 3 and its bottom counterweight 4, making it more stable.
[0033] However, when subjected to a large lateral force, the outer frame 2 is still prone to slipping off the support rod 11, and the crossbar 3 is also prone to slipping off the socket 23. Therefore, a stop block 32 is fixed at one end of the crossbar 3, and the outer ring of the crossbar 3 and the end outer ring of the support rod 11 at the other end of the stop block 32 are both threaded. A nut 5 can be screwed into the end outer ring of the crossbar 3 or the support rod 11 through the thread, thereby locking the crossbar 3 in the socket 23 below the outer frame 2, or locking the connection between the outer frame 2 and the support rod 11 to prevent the crossbar 3 from slipping off or the outer frame 2 from falling off.
[0034] In use, the upright plate 1 is vertically and stably supported by the counterweight 12, so that the outer frame 2 and the pulley 21 installed on its inner side are placed on the side of the upright plate 1 at the required operating height. Then, the two adjacent support rods 11 are simultaneously inserted through the upper and lower sockets 23 of the outer frame 2, and the plate of the outer frame 2 is lowered to be supported in the first annular groove 111 of the outer ring of the support rod 11. Then, the nut 5 is screwed into the outer ring of the support rod 11 on the side of the outer frame 2 to restrict the outer frame 2 from slipping. The cable used for the perforating gun first passes through the pulley 21 and is supported on the outer surface of the pulley 21, and then is connected to the perforating gun. When the perforating gun is gradually extended into the well for installation, the pulley 21 rotates to guide and change the direction of the cable. To make it more flexible to use, the nut 5 can be unscrewed to raise the outer frame 2 and then pulled to the right to remove the support rod 11 from the socket 23, thus removing the outer frame 2. This allows it to be connected to the sling via the top hanging ring 22, enabling more flexible adjustment of the height and position of the outer frame 2 and the pulley 21. The cable can be passed through the pulley 21 on the inner side of the outer frame 2 in the same way. Additionally, to increase stability during lifting, the collar 41 above the counterweight 4 can be placed between the two sockets 23 on the inner side of the lower part of the outer frame 2, allowing the crossbar 3 to pass through the sockets 23 from left to right and simultaneously through the collar 41. Then, the nut 5 is screwed onto the outer ring of the end of the crossbar 3 via threads (see...). Figure 4 By connecting the counterweight 4 to the bottom of the outer frame 2, the counterweight can be increased to ensure the overall stability of the outer frame 2.
Claims
1. A safety logging perforating pulley, comprising a vertical plate (1) and an outer frame (2), a pulley disc (21) being rotatably mounted in the middle of the inner part of the outer frame (2), characterized in that: The top of the outer frame (2) is welded and fixed with a hanging ring (22), and the outer frame (2) above and below the pulley (21) is provided with through-holes (23); The bottom of the upright plate (1) is fixed with a counterweight seat (12), and multiple support rods (11) are fixed horizontally at equal intervals on the side surface of the upright plate (1). Two adjacent support rods (11) pass through the upper and lower slots (23) of the outer frame (2) respectively, so that the outer frame (2) is vertically placed on the side of the upright plate (1) and supported by the support rods (11).
2. The safety wireline perforating sheave of claim 1, wherein: It is also equipped with a crossbar (3) and a counterweight (4). A collar (41) is connected above the counterweight (4). The crossbar (3) can pass through the collar (41). The diameter of the crossbar (3) is equal to the diameter of the support rod (11).
3. The safety wireline perforating sheave of claim 2, wherein: One end of the crossbar (3) is fixed with a stop block (32), and the outer ring of the crossbar (3) and the outer ring of the end of the support rod (11) at the other end of the stop block (32) are both threaded, and a nut (5) can be screwed onto the outer ring of the end of the crossbar (3) or the support rod (11) through the thread.
4. The safety wireline perforating sheave of claim 1, wherein: The outer ring of the support rod (11) has two first annular grooves (111), and the distance between the first annular grooves (111) is equal to the distance between the two side plates of the outer frame (2).
5. The safety wireline perforating sheave of claims 2 or 3, wherein: The outer ring of the crossbar (3) has two second annular grooves (31), and the spacing between the second annular grooves (31) is equal to the spacing between the two side plates of the outer frame (2).
6. The safety wireline perforating sheave of claim 1, wherein: The distance between adjacent support rods (11) on the surface of the upright plate (1) is equal to the distance between the upper and lower sockets (23) of the outer frame (2).