Bridge plug with high use reliability for oil exploitation

Abstract

The utility model relates to the technical field of bridge plugs, in particular to a bridge plug with high use reliability for oil exploitation, which comprises a plug barrel and a rubber sleeve, an outer support component is arranged on the plug barrel, the top end of the rubber sleeve is fixedly sleeved on the top of the plug barrel, and the rubber sleeve is wrapped on the outer support component and the plug barrel; the outer supporting assembly comprises an elastic ring, a plurality of pushing blocks and a driving piece, a groove is formed in the side wall of the plug barrel, the pushing blocks slidably penetrate through the groove, the driving piece is arranged on the plug barrel, the elastic ring is arranged on the pushing blocks in a sleeving mode, and the rubber sleeve is arranged on the elastic ring in a sleeving mode. The elastic ring drives the rubber sleeve to be tightly pressed on the inner side wall of the pipeline to form plugging, the rubber sleeve can be far away from the inner wall of the pipeline by reversely driving the push block to move, the rubber sleeve is convenient to take out and reuse, and resources are saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge plugs, in particular to a bridge plug used in petroleum mining with high reliability. Background Art

[0002] Bridge plug is a plugging tool used in oil wells or pipelines. It is widely used in oil field exploration and development for oil and water well stratified fracturing, stratified acidizing, stratified oil testing and other construction operations. It is a safe, reliable, low-cost and fully functional downhole plugging tool.

[0003] Most of the bridge plugs in the prior art are permanent bridge plugs. As a disposable consumable, their high production cost leads to poor economic applicability and causes waste of production resources. Utility Model Content

[0004] The technical problem to be solved by the utility model is that most of the existing bridge plugs are permanent bridge plugs. As a disposable consumable, their high production cost leads to poor economic applicability and causes waste of production resources.

[0005] In order to achieve the above functions, the technical solution adopted by the utility model is as follows: a bridge plug with high reliability for oil mining, comprising a plug barrel and a rubber sleeve, the plug barrel is provided with an external support assembly, the top end of the rubber sleeve is fixedly sleeved on the top of the plug barrel, and the rubber sleeve is wrapped around the external support assembly and the plug barrel; the external support assembly includes an elastic ring, a push block and a driving member, the side wall of the plug barrel is provided with a groove, the push block slides through the groove and is provided in several groups, the driving member is provided on the plug barrel, the elastic ring is sleeved on several push blocks, and the rubber sleeve is sleeved on the elastic ring.

[0006] Preferably, the driving member includes a bidirectional screw, a screw pair and a connecting rod, the two ends of the bidirectional screw are rotatably arranged on the inner top wall and bottom wall of the plug barrel, the screw pair is threadedly connected to the bidirectional screw and two groups are arranged opposite to each other, and the two ends of the connecting rod are respectively rotatably hinged on the screw pair and the push block.

[0007] Preferably, a positioning plate is provided at the top of the plug barrel, a pushing member is provided on the positioning plate, the pushing member includes a bracket and a push rod, a magnet is provided on the top wall of the positioning plate, an electromagnet is provided at the bottom end of the bracket, the electromagnet and the magnet are magnetically attracted to each other, and the push rod is provided at the top of the bracket.

[0008] Preferably, a power part is provided at the bottom end of the bracket, and the power part includes a driving motor, a cartridge and a clamping shaft. The driving motor is arranged on the inner top wall of the bracket, and the top end of the bidirectional lead screw rotates through the bearing to pass through the positioning plate and extend out, the bottom end of the clamping shaft is connected to the top end of the bidirectional lead screw, the top end of the cartridge is connected to the output end of the driving motor, and the bottom end of the cartridge is clamped on the clamping shaft.

[0009] Preferably, the cross-sectional view of the clamping shaft is arranged in a flower-shaped structure, and the clamping cylinder is arranged to match the clamping shaft.

[0010] Preferably, a cable is embedded in the push rod, and the cable is electrically connected to the drive motor and the electromagnet.

[0011] The utility model adopts the above structure to achieve the following beneficial effects: (1) the plug barrel can be easily put into the pipeline through the push rod through the magnetic attraction of the magnet and the electromagnet. The driving member drives the push block to move outward, and the push block drives the elastic ring to expand outward. The elastic ring drives the rubber sleeve to be pressed against the inner wall of the pipeline to form a seal. The electromagnetic sticker is powered off and the push rod and the driving member can be taken out; (2) by driving the push block in the reverse direction, the rubber sleeve 2 can be away from the inner wall of the pipeline, which is convenient for removal and reuse, saving resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0013] Figure 2 A cross-sectional view of an embodiment of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the embodiment of the utility model with the rubber sleeve removed;

[0015] Figure 4 It is a top view of the clamping shaft according to an embodiment of the utility model.

[0016] Among them, 1. plug sleeve, 2. rubber sleeve, 3. external support assembly, 4. elastic ring, 5. push block, 6. driving part, 7. groove, 8. bidirectional screw, 9. screw pair, 10. connecting rod, 11. positioning plate, 12. pushing part, 13. bracket, 14. push rod, 15. magnet, 16. electromagnet, 17. power part, 18. driving motor, 19. cartridge, 20. clamping shaft, 21. cable. DETAILED DESCRIPTION

[0017] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. The present utility model is further described in detail below in conjunction with the accompanying drawings.

[0019] like Figure 1-4 As shown, the utility model proposes a bridge plug with high reliability for oil mining, including a plug barrel 1 and a rubber sleeve 2, the plug barrel 1 is provided with an outer support assembly 3, the top end of the rubber sleeve 2 is fixedly sleeved on the top of the plug barrel 1, and the rubber sleeve 2 is wrapped around the outer support assembly 3 and the plug barrel 1; the outer support assembly 3 includes an elastic ring 4, a push block 5 and a driving member 6, the side wall of the plug barrel 1 is provided with a groove 7, the push block 5 slides through the groove 7 and is provided with a plurality of groups, the driving member 6 is provided on the plug barrel 1, the elastic ring 4 is sleeved on a plurality of push blocks 5, and the rubber sleeve 2 is sleeved on the elastic ring 4, the plug barrel 1 is put into the pipeline, the driving member 6 drives the push block 5 to move outward, the push block 5 drives the elastic ring 4 to expand outward, the elastic ring 4 drives the rubber sleeve 2 to be pressed against the inner wall of the pipeline to form a blockage, and the push block is driven to move in the reverse direction, so that the rubber sleeve 2 can be away from the inner wall of the pipeline, which is convenient for removal, reuse, and resource saving.

[0020] like Figure 2 As shown, the driving member 6 includes a bidirectional screw 8, a screw pair 9 and a connecting rod 10. The two ends of the bidirectional screw 8 are rotatably arranged on the inner top wall and bottom wall of the plug tube 1. The screw pair 9 is threadedly connected to the bidirectional screw 8 and two groups are relatively arranged. The two ends of the connecting rod 10 are respectively rotatably hinged on the screw pair 9 and the push block 5. By driving the bidirectional screw 8 to rotate, the two screw pairs 9 move away from each other, and the angle between the connecting rod 10 and the push block 5 becomes larger, so that the push block 5 can be pushed outward.

[0021] like Figure 1-3 As shown, a positioning plate 11 is provided at the top of the plug tube 1, and a pushing member 12 is provided on the positioning plate 11. The pushing member 12 includes a bracket 13 and a push rod 14. A magnet 15 is provided on the top wall of the positioning plate 11, and an electromagnet 16 is provided at the bottom end of the bracket 13. The electromagnet 16 and the magnet 15 are magnetically attracted to each other. The push rod 14 is provided at the top of the bracket 13. When the electromagnet 16 is powered off, the bracket 13 and the push rod 14 can be taken out of the pipeline.

[0022] like Figure 1-4As shown, a power part 17 is provided at the bottom end of the bracket 13, and the power part 17 includes a driving motor 18, a cartridge 19 and a clamping shaft 20. The driving motor 18 is arranged on the inner top wall of the bracket 13, and the top end of the bidirectional lead screw 8 rotates through the positioning plate 11 and extends out through the bearing, and the bottom end of the clamping shaft 20 is connected to the top end of the bidirectional lead screw 8, and the top end of the cartridge 19 is connected to the output end of the driving motor 18. The bottom end of the cartridge 19 is clamped on the clamping shaft 20, and the cross-sectional view of the clamping shaft 20 is a flower-shaped structure. The cartridge 19 is matched with the clamping shaft 20. When the driving motor 18 is started, the bidirectional lead screw 8 can be driven to rotate through the cartridge 19 and the clamping shaft 20.

[0023] The push rod 14 has a cable 21 embedded therein. The cable 21 is electrically connected to the drive motor 18 and the electromagnet 16 . The electromagnet 16 and the drive motor 18 can be powered by the cable 21 .

[0024] During specific use, the electromagnet 16 is energized through the cable 21 to magnetically attract the magnet 15, and the plug tube 1 is put into the blocking position in the pipeline through the push rod 14, and the drive motor 18 is powered by the cable 21. The drive motor 18 drives the bidirectional screw 8 to rotate through the clamping cylinder 19 and the clamping shaft 20, so that the two screw pairs 9 move away from each other, and the angle between the connecting rod 10 and the push block 5 becomes larger, so that the push block 5 can be pushed outward, and the push block 5 drives the elastic ring 4 to expand outward, and the elastic ring 4 drives the rubber sleeve 2 to be pressed against the inner wall of the pipeline to form a blockage. After the blocking is completed, the electromagnet 16 is powered off, and the bracket 13, the driving member 6 and the push rod 14 can be taken out of the pipeline.

[0025] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A bridge plug with high reliability for oil mining, characterized by: It includes a plug barrel and a rubber sleeve, the plug barrel is provided with an external support assembly, the top end of the rubber sleeve is fixedly sleeved on the top of the plug barrel, and the rubber sleeve is wrapped around the external support assembly and the plug barrel; the external support assembly includes an elastic ring, a push block and a driving member, the side wall of the plug barrel is provided with a groove, the push block slides through the groove and is provided in several groups, the driving member is provided on the plug barrel, the elastic ring is sleeved on several push blocks, and the rubber sleeve is sleeved on the elastic ring.

2. A bridge plug with high reliability for oil mining according to claim 1, characterized in that: The driving member includes a bidirectional screw, a screw pair and a connecting rod. The two ends of the bidirectional screw are rotatably arranged on the inner top wall and bottom wall of the plug barrel. The screw pair is threadedly connected to the bidirectional screw and two groups are arranged opposite to each other. The two ends of the connecting rod are respectively rotatably hinged on the screw pair and the push block.

3. A bridge plug with high reliability for oil mining according to claim 2, characterized in that: A positioning plate is provided at the top of the plug tube, a pushing member is provided on the positioning plate, and the pushing member includes a bracket and a push rod. A magnet is provided on the top wall of the positioning plate, an electromagnet is provided at the bottom end of the bracket, the electromagnet and the magnet are magnetically attracted to each other, and the push rod is provided at the top of the bracket.

4. A bridge plug with high reliability for oil mining according to claim 3, characterized in that: A power part is provided at the bottom end of the bracket, and the power part includes a driving motor, a cartridge and a clamping shaft. The driving motor is arranged on the inner top wall of the bracket, and the top end of the bidirectional lead screw rotates through the bearing to penetrate the positioning plate and extend out, the bottom end of the clamping shaft is connected to the top end of the bidirectional lead screw, the top end of the cartridge is connected to the output end of the driving motor, and the bottom end of the cartridge is clamped on the clamping shaft.

5. A bridge plug with high reliability for oil mining according to claim 4, characterized in that: The cross-sectional view of the clamping shaft is a flower-shaped structure, and the clamping cylinder is matched with the clamping shaft.

6. A bridge plug with high reliability for oil mining according to claim 3, characterized in that: A cable is embedded in the push rod, and the cable is electrically connected to the drive motor and the electromagnet.

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