Sealing soluble bridge plug structure capable of being monitored

Abstract

The invention discloses a monitorable sealing soluble bridge plug structure, and relates to the technical field of soluble bridge plugs, the monitorable sealing soluble bridge plug structure comprises a push cylinder, a release lever, a central pipe and a plugging pipe, a locking slip is arranged on one side, close to a conical inclined surface of a conical cylinder, of a push ring, and guide retaining pieces are arranged on two sides of the push ring. By arranging the guide retaining piece, when a push cylinder pushes a push ring to move, liquid injected into a second piston cylinder can extrude a second piston block, and in the process, a telescopic rod and a telescopic spring are shrunk, so that the telescopic spring performs elastic energy storage; the guiding plate swings in the direction away from the circle center of the plugging pipe, so that the end, away from the L-shaped push plate, of the guiding plate can make contact with the inner wall of the pipeline, and when a subsequent soluble ball enters the pipeline, the soluble ball can accurately fall into the plugging pipe under the guiding effect of the guiding plate; in this way, the accuracy of the soluble ball entering the plugging pipe is improved.

Description

Technical Field

[0001] The invention relates to the technical field of soluble bridge plugs, in particular to a monitorable sealed soluble bridge plug structure. Background Art

[0002] In shale gas development, shale gas wells require staged fracturing, and bridge plugs play an important role in sealing shale gas wells. Currently, soluble bridge plugs are primarily used in shale gas development. Made of soluble metal and biodegradable rubber, these plugs, in conjunction with conventional sealing tools, are pumped into the well to achieve staged fracturing. After fracturing, the well can be directly put into production for testing. During the fracturing process, pressure sensors monitor the pressure between two soluble bridge plugs to determine the sealing properties between adjacent soluble bridge plugs. The plugs then rapidly dissolve under the action of flowback fluid, eliminating the need for salvage or drilling, and facilitating production and subsequent construction without any intervention.

[0003] After the soluble bridge plug is placed, a soluble ball needs to be dropped into one end of the bridge plug to achieve segmentation in the well through the contact between the soluble ball and the plugging tube. However, since the push ring needs to be moved and the rubber tube expanded by the cooperation of the push tube and the release lever during the plugging process, the diameter of the plugging tube at one end of the center tube will be smaller than the inner wall diameter of the push tube. When the push tube is pulled out after the expansion of the rubber tube, a gap will be left between the outer wall of the plugging tube and the inner wall of the well pipe. At this time, when the soluble ball is dropped, a collision will occur between the soluble ball and the plugging tube, which also affects the docking accuracy between the soluble ball and the plugging tube. Summary of the Invention

[0004] The purpose of the present invention is to provide a monitorable sealed soluble bridge plug structure in order to solve the problem of poor docking effect between the soluble ball and the plugging tube.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a monitorable sealed soluble bridge plug structure, comprising a push tube, a release lever, a center tube, and a sealing tube, wherein the push tube and the release lever are connected by an external sealing tool, the sealing tube is connected to the release lever, the center tube is fixedly mounted on one end of the sealing tube, a tapered tube is mounted on the outer wall of the center tube, a sealing rubber tube is provided on one side of the tapered tube, a push ring in contact with the push tube is provided on the outer side of the telescopic center tube, a locking slip is provided on the side of the push ring close to the tapered inclined surface of the tapered tube, and guide stoppers are provided on both sides of the push ring for guiding the soluble ball and for one-way locking of the locking slip;

[0006] The guide stop member includes a splicing plate installed on the side of the conical cylinder close to the push ring, a movable rod penetrating the push ring is provided on one side of the splicing plate, a first piston block is installed on one end of the movable rod, and the push ring is fixedly connected to the first piston cylinder on the side away from the locking slip. The first piston block is located on the inner side of the first piston cylinder and is slidably connected to the first piston cylinder. A transition bin is installed on the end of the first piston cylinder away from the push ring, and a locking unit is provided on the inner side of the transition bin.

[0007] As a further solution of the present invention: a guide port is provided at one end of the transition chamber close to the first piston cylinder, and the transition chamber and the first piston cylinder are in communication through the guide port.

[0008] As a further solution of the present invention: the guide stop member also includes a first bellows telescopic tube installed at one end of the transition chamber away from the first piston cylinder, one end of the first bellows telescopic tube is installed with a locking positioning ring connected to the outer wall of the center tube, one side of the locking positioning ring is provided with a guide tube running through the other side of the locking positioning ring, the side of the locking positioning ring away from the first bellows telescopic tube is connected to the second piston cylinder, the first bellows telescopic tube and the second piston cylinder are connected through the guide tube, the interior of the second piston cylinder is slidably connected to the second piston block, one side of the second piston block is connected to a telescopic rod extending to the outside of the second piston cylinder, one end of the telescopic rod is fixedly connected to a movable ring, the outer wall of the movable ring is installed with an L-shaped push plate, the interior of the blocking tube is provided with a positioning groove, one end of the L-shaped push plate extends into the positioning groove, one end of the L-shaped push plate is rotatably connected to the guide plate via a rotating shaft, the outer side of the rotating shaft connecting the guide plate and the L-shaped push plate is clamped with a torsion spring, and the interior of the telescopic rod is provided with a telescopic spring.

[0009] As a further solution of the present invention: the telescopic length of the first bellows telescopic tube is equal to the moving distance of the first piston cylinder.

[0010] As a further solution of the present invention: there are multiple L-shaped push plates, and the multiple L-shaped push plates are distributed at equal distances along the center of the movable ring.

[0011] As a further solution of the present invention: the center of the sealing tube is coaxial with the center of the movable ring, and the center of the locking positioning ring is coaxial with the center of the push ring.

[0012] As a further solution of the present invention: the positioning unit includes a positioning plate installed on the inner wall of the transition bin, the bottom of the positioning plate is rotatably connected to a blocking plate through a rotating shaft, the outer wall of the transition bin is installed with a positioning frame, the bottom of the positioning frame is connected with a guide rod extending to the inner side of the transition bin, the end of the guide rod away from the center of the transition bin is fixed with a limiting plate, the other end of the guide rod is installed with a trapezoidal positioning block located on the inner side of the transition bin, the bottom of the trapezoidal positioning block is connected to a second corrugated telescopic tube connected to the inner wall of the transition bin, and the second corrugated telescopic tube is located on the outside of the guide rod.

[0013] As a further solution of the present invention: the diameter of the baffle plate is larger than the diameter of the guide port, and a sealing gasket made of soluble rubber is provided on the side of the baffle plate close to the guide port.

[0014] As a further solution of the present invention: a through hole with a diameter larger than that of the guide rod and smaller than that of the inner wall of the second corrugated telescopic tube is provided on the top of the positioning frame.

[0015] As a further solution of the present invention: when the baffle plate is in a vertical state, the side of the trapezoidal blocking block close to the baffle plate is flush with the side of the baffle plate away from the guide port.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. By setting a guide stop, when the push cylinder pushes the push ring to move, the liquid injected into the second piston cylinder will squeeze the second piston block. In this process, the telescopic rod and the telescopic spring will contract, so that the telescopic spring will elastically store energy. When the push cylinder is pulled out of the pipeline, the blocking tube will lose the cover of the push cylinder. At this time, the telescopic spring will drive the movable ring to move toward the blocking tube. When the guide plate is separated from the positioning groove, the guide plate swings in the direction away from the center of the blocking tube, so that the end of the guide plate away from the L-shaped push plate will contact the inner wall of the pipeline. When the soluble ball enters the pipeline subsequently, the soluble ball will fall accurately into the inside of the blocking tube under the guidance of the guide plate, thereby improving the accuracy of the soluble ball entering the blocking tube.

[0018] 2. By setting the card unit, when the push cylinder pushes the push ring to move before the staged fracturing in the well, the solution inside the first piston cylinder will enter the transition chamber through the diversion port. At this time, the barrier plate will swing under the impact of the aqueous solution. When the pressure inside the first piston cylinder and the transition chamber is balanced, the barrier plate will swing back to its original state. At this time, the barrier plate will block the diversion port. When the staged fracturing is carried out in the well, the pressure between adjacent bridge plugs increases, so that the trapezoidal card block can move toward the center of the transition chamber. , so that one side of the trapezoidal blocking block is fitted with the side of the baffle plate away from the guide port, and at the same time the second corrugated telescopic tube is extended, so that the trapezoidal blocking block can block the baffle plate to prevent the baffle plate from swinging. At this time, the baffle plate and the first piston block will be in a sealed state, so that the first piston cylinder cannot move along the movable rod, thereby preventing the push ring from moving, further improving the stability of the locking slips, and ensuring that the sealing rubber cylinder continues to cling to the inner wall of the casing after setting, forming a reliable sealing barrier. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0020] Figure 2 This is a schematic diagram of the connection between the push ring and the blocking tube of the present invention;

[0021] Figure 3 It is a schematic diagram of the connection between the tapered cylinder and the locking and positioning ring of the present invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of the plugging tube of the present invention;

[0023] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0024] Figure 6 Schematic diagram of the connection between the first piston cylinder and the second piston cylinder of the present invention;

[0025] Figure 7 This is a schematic diagram of the connection between the first bellows telescopic tube and the second piston cylinder of the present invention;

[0026] Figure 8 This is a schematic diagram of the internal structure of the transition chamber of the present invention;

[0027] Figure 9 It is a schematic diagram of the connection between the transition chamber and the trapezoidal positioning block of the present invention.

[0028] In the figure: 1. Push cylinder; 2. Release lever; 3. Push ring; 4. Locking slip; 5. Conical cylinder; 6. Sealing rubber cylinder; 7. Center tube; 8. Blocking tube; 9. Movable ring; 10. L-shaped push plate; 11. Locking positioning ring; 12. First piston cylinder; 13. Splicing plate; 14. Movable rod; 15. First piston block; 16. Transition chamber; 17. First bellows telescopic tube; 18. Guide plate; 19. Positioning groove; 20. Torsion spring; 21. Telescopic rod; 22. Second piston cylinder; 23. Telescopic spring; 24. Second piston block; 25. Guide tube; 26. Clamping plate; 27. Blocking plate; 28. Trapezoidal clamping block; 29. ​​Second bellows telescopic tube; 30. Positioning frame; 31. Limiting plate; 32. Guide rod; 33. Diversion port. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or connected in one piece; they can be mechanically connected or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes an embodiment of the present invention based on its overall structure.

[0031] Example 1

[0032] See also Figures 1 to 9In an embodiment of the present invention, a monitorable sealed soluble bridge plug structure includes a push tube 1, a release rod 2, a center tube 7, and a sealing tube 8. The push tube 1 and the release rod 2 are connected by an external sealing tool. The sealing tube 8 is connected to the release rod 2. The center tube 7 is fixedly installed at one end of the sealing tube 8. A tapered tube 5 is installed on the outer wall of the center tube 7. A sealing rubber tube 6 is provided on the center tube 7 and is located on one side of the tapered tube 5. A push ring 3 in contact with the push tube 1 is provided on the outer side of the telescopic center tube 7. A locking slip 4 is provided on the side of the push ring 3 close to the conical inclined surface of the tapered tube 5. Guide stoppers are provided on both sides of the push ring 3 for guiding the soluble ball and for one-way locking of the locking slip 4.

[0033] The guide stop member includes a splicing plate 13 installed on the side of the conical cylinder 5 close to the push ring 3, and a movable rod 14 is provided on one side of the splicing plate 13 to pass through the push ring 3. A first piston block 15 is installed on one end of the movable rod 14. The push ring 3 is fixedly connected to the side away from the locking slip 4 with the first piston cylinder 12. The first piston block 15 is located on the inner side of the first piston cylinder 12 and is slidably connected to the first piston cylinder 12. A transition chamber 16 is installed on the end of the first piston cylinder 12 away from the push ring 3, and a positioning unit is provided on the inner side of the transition chamber 16.

[0034] A guide port 33 is formed at one end of the transition chamber 16 close to the first piston cylinder 12 , and the transition chamber 16 and the first piston cylinder 12 are in communication through the guide port 33 .

[0035] In this embodiment, the push cylinder 1 is pushed to the specified position in the well by the operation of the external sealing tool, and then the locking slips 4 are brought into contact with the inner wall of the pipeline and the sealing rubber cylinder 6 is expanded by the cooperation of the sealing tool, the locking slips 4 are used to lock the expanded sealing rubber cylinder 6, and at the same time, the outer wall of the sealing rubber cylinder 6 is brought into contact and sealed with the inner wall of the pipeline by the expansion of the sealing rubber cylinder 6. When the push cylinder 1 pushes the push ring 3 to move, the first piston cylinder 12 will move along the movable rod 14, so that the solution inside the first piston cylinder 12 can enter the transition chamber 16 under the pressure of the first piston block 15, and the guide stopper can be used on one side. The withdrawal part is operated, and then the push cylinder 1, the release lever 2 and the sealing tube 8 are separated by the operation of the sealing tool, and then the soluble ball is sent in, and the soluble ball is accurately dropped to the inner wall of the sealing tube 8 by the operation of the guide stop part, so as to improve the accuracy of the soluble ball in sealing the sealing tube 8, and then the pipeline is subjected to segmented pressure cracking. In this process, the positioning unit seals one end of the first piston cylinder 12 through the change of the pressure in the pipeline, so that the space between the first piston block 15 and the transition chamber 16 is in a sealed state, thereby preventing the push ring 3 from moving in the direction away from the tapered cylinder 5, and further improving the stability of the contact between the locking cava 4 and the inner wall of the pipeline.

[0036] Example 2

[0037] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 The guide stop member also includes a first bellows telescopic tube 17 installed at one end of the transition chamber 16 away from the first piston cylinder 12. One end of the first bellows telescopic tube 17 is installed with a locking positioning ring 11 connected to the outer wall of the center tube 7. One side of the locking positioning ring 11 is provided with a guide tube 25 that passes through the other side of the locking positioning ring 11. The locking positioning ring 11 is connected to the second piston cylinder 22 on the side away from the first bellows telescopic tube 17. The first bellows telescopic tube 17 and the second piston cylinder 22 are connected through the guide tube 25. The interior of the second piston cylinder 22 is slidably connected. There is a second piston block 24, and one side of the second piston block 24 is connected to a telescopic rod 21 extending to the outside of the second piston cylinder 22. One end of the telescopic rod 21 is fixedly connected to a movable ring 9, and an L-shaped push plate 10 is installed on the outer wall of the movable ring 9. A positioning groove 19 is opened inside the sealing tube 8, and one end of the L-shaped push plate 10 extends to the inside of the positioning groove 19. One end of the L-shaped push plate 10 is rotatably connected to a guide plate 18 through a rotating shaft. A torsion spring 20 is clamped on the outside of the rotating shaft connecting the guide plate 18 and the L-shaped push plate 10, and a telescopic spring 23 is provided inside the telescopic rod 21.

[0038] Among them, the telescopic length of the first corrugated telescopic tube 17 is equal to the moving distance of the first piston cylinder 12, the number of L-shaped push plates 10 is set, and the multiple L-shaped push plates 10 are distributed at equal distances along the center of the movable ring 9, the center of the sealing tube 8 is coaxial with the center of the movable ring 9, and the locking positioning ring 11 is coaxial with the center of the push ring 3.

[0039] In this embodiment, when the push cylinder 1 pushes the push ring 3 to move, the solution inside the first piston cylinder 12 will pass through the transition chamber 16, the first corrugated telescopic tube 17, and the guide tube 25 under the squeezing action of the first piston block 15 and enter the second piston cylinder 22. Since the push cylinder 1 blocks the outer wall of the blocking tube 8, the liquid injected into the second piston cylinder 22 will squeeze the second piston block 24. At this time, the second piston block 24 will move in the direction away from the locking positioning ring 11. In this process, the telescopic rod 21 and the telescopic spring 23 will contract, so that the telescopic spring 23 can elastically store energy. When the push cylinder 1 is pulled out of the pipeline, the blocking tube 8 will lose the blocking of the push cylinder 1. When the guide plate 18 is separated from the positioning groove 19, the end of the guide plate 18 away from the L-shaped push plate 10 will swing in the direction away from the center of the blocking tube 8 under the action of the elastic restoring force of the torsion spring 20, so that the end of the guide plate 18 away from the L-shaped push plate 10 will contact the inner wall of the pipe. When the soluble ball enters the pipe subsequently, the soluble ball will fall accurately into the inside of the blocking tube 8 under the guidance of the guide plate 18, thereby improving the accuracy of the soluble ball entering the blocking tube 8.

[0040] Example 3

[0041] Please refer to Figure 3 、 Figure 8 、 Figure 9 The positioning unit includes a card plate 26 installed on the inner wall of the transition bin 16, and the bottom of the card plate 26 is rotatably connected to a blocking plate 27 through a rotating shaft. A positioning frame 30 is installed on the outer wall of the transition bin 16, and a guide rod 32 extending to the inner side of the transition bin 16 is inserted at the bottom of the positioning frame 30. A limiting plate 31 is fixed at one end of the guide rod 32 away from the center of the transition bin 16, and a trapezoidal card block 28 located on the inner side of the transition bin 16 is installed at the other end of the guide rod 32. The bottom of the trapezoidal card block 28 is connected to a second corrugated telescopic tube 29 connected to the inner wall of the transition bin 16, and the second corrugated telescopic tube 29 is located on the outside of the guide rod 32.

[0042] Among them, the diameter of the blocking plate 27 is larger than the diameter of the guide port 33, and a sealing gasket made of soluble rubber is provided on the side of the blocking plate 27 close to the guide port 33. The top of the positioning frame 30 is provided with a through hole with a diameter larger than the guide rod 32 and smaller than the inner wall diameter of the second corrugated telescopic tube 29. When the blocking plate 27 is in a vertical state, the side of the trapezoidal locking block 28 close to the blocking plate 27 is flush with the side of the blocking plate 27 away from the guide port 33.

[0043] In this embodiment, when the push cylinder 1 pushes the push ring 3 to move before the staged fracturing in the well, the solution inside the first piston cylinder 12 will enter the transition chamber 16 through the guide port 33. At this time, the baffle plate 27 will swing under the impact of the aqueous solution. When the pressure inside the first piston cylinder 12 and the transition chamber 16 is balanced, the baffle plate 27 will swing back to its original state. At this time, the baffle plate 27 will block the guide port 33. When the staged fracturing is performed in the well, the pressure between adjacent bridge plugs increases, so that the trapezoidal blocking block 28 can move toward the center of the transition chamber 16, thereby To make one side of the trapezoidal blocking block 28 fit with the side of the blocking plate 27 away from the guide port 33, and at the same time the second corrugated telescopic tube 29 is extended, so that the trapezoidal blocking block 28 can block the blocking plate 27 to prevent the blocking plate 27 from swinging. At this time, the blocking plate 27 and the first piston block 15 will be in a sealed state, so that the first piston cylinder 12 cannot move along the movable rod 14, thereby preventing the push ring 3 from moving, further improving the stability of the locking slip 4, and ensuring that the sealing rubber cylinder 6 continues to cling to the inner wall of the casing after setting, forming a reliable sealing barrier.

[0044] The working principle of the present invention is as follows: the push cylinder 1 is pushed to the specified position in the well by the operation of the external sealing tool, and then the locking slips 4 are brought into contact with the inner wall of the pipeline and the sealing rubber cylinder 6 is expanded by the cooperation of the sealing tool, the locking slips 4 are used to lock the expanded sealing rubber cylinder 6, and at the same time, the outer wall of the sealing rubber cylinder 6 is brought into contact and sealed with the inner wall of the pipeline by the expansion of the sealing rubber cylinder 6. When the push cylinder 1 pushes the push ring 3 to move, the solution inside the first piston cylinder 12 will pass through the transition chamber 16, the first corrugated telescopic tube 17, and the guide tube 25 under the squeezing action of the first piston block 15 and enter the second piston cylinder 22. Since the push cylinder 1 blocks the outer wall of the sealing tube 8, the solution injected into the second piston cylinder 22 at this time The liquid inside 22 will squeeze the second piston block 24, and the second piston block 24 will move in the direction away from the locking positioning ring 11. In this process, the telescopic rod 21 and the telescopic spring 23 will contract, so that the telescopic spring 23 can elastically store energy. When the push cylinder 1 is pulled out of the pipeline, the blocking tube 8 will lose the shielding of the push cylinder 1. At this time, the telescopic spring 23 will drive the movable ring 9 to move toward the blocking tube 8, so that the L-shaped push plate 10 can push the guide plate 18 out of the positioning groove 19. When the guide plate 18 is separated from the positioning groove 19, the end of the guide plate 18 away from the L-shaped push plate 10 will swing in the direction away from the center of the blocking tube 8 under the action of the elastic restoring force of the torsion spring 20. This will make the end of the guide plate 18 away from the L-shaped push plate 10 contact the inner wall of the pipe. When the soluble ball enters the pipe later, the soluble ball will fall accurately into the inside of the blocking pipe 8 under the guidance of the guide plate 18, thereby improving the accuracy of the soluble ball entering the blocking pipe 8. In the process of the push cylinder 1 pushing the push ring 3 to move before the staged fracturing in the well, the solution inside the first piston cylinder 12 will enter the transition chamber 16 through the guide port 33. At this time, the baffle plate 27 will swing under the impact of the aqueous solution. When the pressure inside the first piston cylinder 12 and the transition chamber 16 is balanced, the baffle plate 27 will swing back. At this time, the baffle plate 27 will block the guide port 33. When the staged fracturing is performed in the well Due to the increase in pressure between adjacent bridge plugs, the trapezoidal blocking block 28 can be moved toward the center of the transition chamber 16, so that one side of the trapezoidal blocking block 28 is in contact with the side of the blocking plate 27 away from the guide port 33. At the same time, the second bellows expansion tube 29 is extended, so that the trapezoidal blocking block 28 can block the blocking plate 27 to prevent the blocking plate 27 from swinging. At this time, the blocking plate 27 and the first piston block 15 will be in a sealed state, so that the first piston cylinder 12 cannot move along the movable rod 14, thereby preventing the push ring 3 from moving, further improving the stability of the locking slip 4, and ensuring that the sealing rubber cylinder 6 continues to be close to the inner wall of the casing after setting, forming a reliable sealing barrier.

[0045] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A monitorable sealed soluble bridge plug structure, comprising a push tube (1), a release lever (2), a central tube (7), and a plugging tube (8), wherein the push tube (1) and the release lever (2) are connected via an external setting tool, the plugging tube (8) is connected to the release lever (2), and the central tube (7) is fixedly mounted on one end of the plugging tube (8), characterized in that: The outer wall of the central tube (7) is provided with a conical tube (5), the central tube (7) is provided with a sealing rubber tube (6) located on one side of the conical tube (5), the outer side of the telescopic central tube (7) is provided with a push ring (3) in contact with the push tube (1), the push ring (3) is provided with a locking slip (4) on the side close to the conical inclined surface of the conical tube (5), and the two sides of the push ring (3) are provided with guide stoppers for guiding the soluble ball and for one-way locking the locking slip (4); The guide stop member includes a splicing plate (13) installed on the side of the conical cylinder (5) close to the push ring (3), a movable rod (14) penetrating the push ring (3) is provided on one side of the splicing plate (13), a first piston block (15) is installed on one end of the movable rod (14), and the push ring (3) is fixedly connected to the first piston cylinder (12) on the side away from the locking cava (4), the first piston block (15) is located on the inner side of the first piston cylinder (12) and is slidably connected to the first piston cylinder (12), and a transition chamber (16) is installed on the end of the first piston cylinder (12) away from the push ring (3), and a locking unit is provided on the inner side of the transition chamber (16).

2. A monitorable sealed soluble bridge plug structure according to claim 1, characterized in that: A flow guide port (33) is provided at one end of the transition chamber (16) close to the first piston cylinder (12), and the transition chamber (16) and the first piston cylinder (12) are in communication via the flow guide port (33).

3. A monitorable sealed soluble bridge plug structure according to claim 2, characterized in that: The guide stop member also includes a first bellows telescopic tube (17) installed at one end of the transition chamber (16) away from the first piston cylinder (12), one end of the first bellows telescopic tube (17) is installed with a locking positioning ring (11) connected to the outer wall of the center tube (7), one side of the locking positioning ring (11) is provided with a guide tube (25) penetrating to the other side of the locking positioning ring (11), the side of the locking positioning ring (11) away from the first bellows telescopic tube (17) is connected to the second piston cylinder (22), the first bellows telescopic tube (17) and the second piston cylinder (22) are in a connected state through the guide tube (25), and the interior of the second piston cylinder (22) is slidably connected to the second piston cylinder (22). Block (24), one side of the second piston block (24) is connected to a telescopic rod (21) extending to the outside of the second piston cylinder (22), one end of the telescopic rod (21) is fixedly connected to a movable ring (9), the outer wall of the movable ring (9) is installed with an L-shaped push plate (10), the interior of the blocking tube (8) is provided with a positioning groove (19), one end of the L-shaped push plate (10) extends to the inside of the positioning groove (19), one end of the L-shaped push plate (10) is rotatably connected to a guide plate (18) through a rotating shaft, the outer side of the rotating shaft connecting the guide plate (18) and the L-shaped push plate (10) is clamped with a torsion spring (20), and a telescopic spring (23) is provided inside the telescopic rod (21).

4. A monitorable sealed soluble bridge plug structure according to claim 3, characterized in that: The telescopic length of the first bellows telescopic tube (17) is equal to the moving distance of the first piston cylinder (12).

5. The monitorable sealed soluble bridge plug structure according to claim 3, characterized in that: The number of the L-shaped push plates (10) is multiple, and the multiple L-shaped push plates (10) are distributed at equal distances along the center of the movable ring (9).

6. The monitorable sealed soluble bridge plug structure according to claim 3, characterized in that: The center of the sealing tube (8) is coaxial with the center of the movable ring (9), and the center of the locking positioning ring (11) is coaxial with the center of the push ring (3).

7. The monitorable sealed soluble bridge plug structure according to claim 3, characterized in that: The positioning unit includes a card plate (26) mounted on the inner wall of the transition bin (16), the bottom of the card plate (26) is rotatably connected to a blocking plate (27) via a rotating shaft, a positioning frame (30) is mounted on the outer wall of the transition bin (16), a guide rod (32) extending to the inner side of the transition bin (16) is plugged into the bottom of the positioning frame (30), a limiting plate (31) is fixed to one end of the guide rod (32) away from the center of the transition bin (16), a trapezoidal positioning block (28) located inside the transition bin (16) is mounted on the other end of the guide rod (32), the bottom of the trapezoidal positioning block (28) is connected to a second corrugated telescopic tube (29) connected to the inner wall of the transition bin (16), and the second corrugated telescopic tube (29) is located outside the guide rod (32).

8. The monitorable sealed soluble bridge plug structure according to claim 7, characterized in that: The diameter of the baffle plate (27) is larger than the diameter of the diversion port (33), and a sealing gasket composed of soluble rubber is provided on one side of the baffle plate (27) close to the diversion port (33).

9. The monitorable sealed soluble bridge plug structure according to claim 7, characterized in that: A through hole having a diameter greater than that of the guide rod (32) and smaller than that of the inner wall of the second corrugated telescopic tube (29) is provided on the top of the positioning frame (30).

10. The monitorable sealed soluble bridge plug structure according to claim 7, characterized in that: When the baffle plate (27) is in a vertical state, the side of the trapezoidal blocking block (28) close to the baffle plate (27) is flush with the side of the baffle plate (27) away from the guide port (33).

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