Metal support expansion rubber sheet assembly for open hole well section

Abstract

The invention discloses a metal support expansion rubber sheet assembly for an open hole well section, and relates to the technical field of petroleum and natural gas exploitation, the metal support expansion rubber sheet assembly comprises a main body structure, the main body structure comprises an inner rubber sheet, the surface of the inner rubber sheet is fixedly connected with a metal framework, and the surface of the metal framework is fixedly connected with an outer rubber sheet; one side of the inner rubber sheet is fixedly connected with an upper joint, and the other side of the inner rubber sheet is fixedly connected with a lower joint; the sealing assembly comprises supporting rings arranged on the two sides of the inner rubber sheet, the sides, close to the inner rubber sheet, of the supporting rings are fixedly connected with inner rings, the surfaces of the inner rings are covered with outer rings, the inner rings are fixedly connected with the supporting rings, and sealing grooves are formed in the two sides of the inner rubber sheet; the sealing reliability is remarkably improved through the sealing assembly, well fluid is effectively prevented from invading into the rubber, the rubber expansion space is prevented from being occupied, metal corrosion is prevented from being caused, and therefore the expansion sealing performance and durability of the whole rubber sleeve are enhanced.

Description

Technical Field

[0001] This invention relates to the field of oil and gas extraction technology, and in particular to a metal support expansion rubber assembly for open-hole sections. Background Technology

[0002] In oil and gas resource development, open-hole completion technology is widely used in complex reservoirs such as shale gas and carbonate rocks because it can maximize the preservation of reservoir permeability and reduce completion costs. However, the open-hole section faces problems such as poor wellbore stability, large well diameter variations, and formation fluid cross-flow, which place stringent requirements on the sealing reliability of downhole packers. Among them, the expansion rubber structure is the core component of the packer to achieve annular sealing, and its performance directly determines the safety of completion operations and the efficiency of oil and gas extraction.

[0003] Existing open-hole packers often employ a simple metal and rubber composite design for their expansion rubber structure. However, the interface sealing between the rubber layer and the metal skeleton relies heavily on vulcanization. Under long-term high-pressure cyclic loads, micro-cracks can easily appear at the interface, causing well fluid to infiltrate the interior of the packer, occupying the space required for the packer's expansion, and triggering metal corrosion. This weakens the overall expansion sealing performance and durability of the packer. Summary of the Invention

[0004] In view of the problems existing in the above-mentioned metal support expansion rubber assemblies for open hole sections, the present invention is proposed.

[0005] Therefore, the problem that this invention aims to solve is that under long-term high-pressure cyclic load, micro-cracks are prone to appear at the interface, causing well fluid to invade the interior of the rubber.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a metal support expansion rubber assembly for open-hole sections, comprising,

[0007] The main structure includes an inner rubber sheet, a metal frame fixedly connected to the surface of the inner rubber sheet, an outer rubber sheet fixedly connected to the surface of the metal frame, an upper connector fixedly connected to one side of the inner rubber sheet, and a lower connector fixedly connected to the other side of the inner rubber sheet; and...

[0008] A sealing assembly includes support rings disposed on both sides of an inner rubber sheet. An inner ring is fixedly connected to the support ring near the inner rubber sheet. An outer ring is covered on the surface of the inner ring and fixedly connected to the support ring. Sealing grooves are formed on both sides of the inner rubber sheet and cooperate with the outer ring. A sealing gasket is fixedly connected to the inner wall of the sealing groove. A sealing groove is formed on one side of the surface of the outer ring and cooperates with the sealing gasket. A sealing airbag is embedded on the other side of the surface of the outer ring. A trigger element is provided on the surface of the inner ring and cooperates with the sealing airbag. A through groove is formed on the surface of the support ring. A first spring is fixedly connected to the inner cavity of the through groove. A locking block is fixedly connected to the side of the first spring away from the through groove. The inner cavities of the upper connector and the lower connector are both formed with locking grooves and cooperate with the locking block. A disassembly element is provided on the side of the locking block away from the locking groove.

[0009] As a preferred embodiment of the metal support expansion rubber assembly for open-hole sections according to the present invention, the trigger includes a receiving groove formed on the surface of the inner ring, an abutment block slidably connected to the inner cavity of the receiving groove, a slide rod fixedly connected to the surface of the abutment block, a slide rail slidably connected to the surface of the slide rod, a piston rod fixedly connected to the surface of the slide rail, the side of the piston rod away from the slide rail passing through the inner ring and slidably connected to a sleeve, the sleeve fixedly connected to the inner cavity of the inner ring, a connecting pipe communicating with the side of the sleeve away from the piston rod, the connecting pipe passing through the support ring and the outer ring on the side away from the sleeve, and communicating with the sealing airbag.

[0010] As a preferred embodiment of the metal support expansion rubber assembly for open-hole sections according to the present invention, wherein: a piston is slidably connected to the inner cavity of the sleeve, and the side of the piston away from the connecting pipe is fixedly connected to the piston rod.

[0011] As a preferred embodiment of the metal support expansion rubber assembly for open hole sections according to the present invention, wherein: a second spring is fixedly connected to the side of the abutment block away from the inner rubber, and the side of the second spring away from the abutment block is fixedly connected to the inner cavity of the receiving groove.

[0012] As a preferred embodiment of the metal support expansion rubber assembly for open hole sections according to the present invention, wherein: sliders are fixedly connected to both sides of the inner cavity of the receiving groove, and sliding grooves are provided on both sides of the abutment block and cooperate with the sliders.

[0013] As a preferred embodiment of the metal support expansion rubber assembly for open-hole sections according to the present invention, rollers are fixedly connected to both sides of the inner cavity of the groove, and the surface of the rollers is in contact with the slider.

[0014] As a preferred embodiment of the metal support expansion rubber assembly for open hole sections according to the present invention, wherein: a limiting ring is fixedly connected to the side of the slide rail away from the piston rod, a limiting rod is slidably connected to the inner cavity of the limiting ring, and both sides of the limiting rod are fixedly connected to the inner cavity of the receiving groove.

[0015] As a preferred embodiment of the metal support expansion rubber assembly for open-hole sections according to the present invention, the disassembly component includes a push rod disposed in the inner cavity of the first spring. The side of the push rod away from the locking block passes through the support ring and extends into the support ring. A push groove is formed on the surface of the push rod. A push ring is disposed on the side of the push groove near the inner rubber. A fixing plate is fixedly connected to the side of the push ring away from the inner rubber. A pull ring is fixedly connected to the side of the fixing plate away from the push ring. Handles are fixedly connected to both sides of the inner cavity of the pull ring.

[0016] As a preferred embodiment of the metal support expansion rubber assembly for open hole sections according to the present invention, wherein: the pushing ring is rotatably connected to a rolling block on the side near the pushing groove and cooperates with the pushing groove.

[0017] As a preferred embodiment of the metal support expansion rubber assembly for open hole sections according to the present invention, the push ring is fixedly connected to both sides of the push ring, and the inner cavity of the support ring is provided with guide grooves on both sides, which cooperate with the guide blocks.

[0018] The beneficial effects of this invention are as follows: it significantly improves the sealing reliability of the sealing components, effectively prevents well fluid from entering the interior of the rubber casing, avoids occupying the expansion space of the rubber casing and causing metal corrosion, thereby enhancing the overall expansion sealing performance and durability of the rubber casing. At the same time, it is equipped with a convenient disassembly structure, which allows for easy disassembly and maintenance of components such as the support ring through the disassembly parts, thereby reducing maintenance costs and difficulties, and ensuring the safety of well completion operations and the efficiency of oil and gas extraction. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural diagram of a metal-supported expansion rubber assembly used in open-hole sections.

[0021] Figure 2 This is a structural cross-sectional view of a metal-supported expansion rubber assembly used in open-hole sections.

[0022] Figure 3Diagram of the upper connector, lower connector, and support ring of the metal support expansion rubber assembly used in open-hole sections.

[0023] Figure 4 This is a cross-sectional view of the inner rubber, upper connector, support ring, inner ring, and outer ring structure of a metal support expansion rubber assembly used in open-hole sections.

[0024] Figure 5 For metal support expansion rubber assembly used in open hole sections Figure 4 Enlarged view of region A in the middle.

[0025] Figure 6 For metal support expansion rubber assembly used in open hole sections Figure 4 Enlarged view of region B in the middle.

[0026] Figure 7 This is a partial structural diagram of the trigger element for a metal-supported expansion rubber assembly used in open-hole sections.

[0027] Figure 8 This is a cross-sectional view of the support ring, inner ring, and outer ring structure of a metal support expansion rubber assembly used in open-hole sections.

[0028] Figure 9 This is a partial structural diagram of the disassembled parts of the metal support expansion rubber assembly used in open-hole sections.

[0029] In the diagram: 1. Main structure; 11. Inner rubber; 12. Metal frame; 13. Outer rubber; 14. Upper connector; 15. Lower connector; 2. Sealing assembly; 21. Support ring; 22. Inner ring; 23. Outer ring; 24. Sealing groove; 25. Sealing gasket; 26. Sealing recess; 27. Sealing airbag; 28. Trigger; 29. ​​Through groove; 30. First spring; 31. Locking block; 32. Locking groove; 33. Disassembly part; 28-1. Receiving groove; 28-2. Abutment block; 28-3. Slide rod; 28-4. 28-5. Slide rail; 28-6. Piston rod; 28-7. Sleeve; 28-8. Connecting pipe; 28-9. Piston; 28-10. Second spring; 28-11. Slider; 28-12. Slide groove; 28-13. Roller; 28-14. Limiting ring; 28-15. Limiting rod; 33-1. Push rod; 33-2. Push groove; 33-3. Pushing ring; 33-4. Fixing plate; 33-5. Pulling ring; 33-6. Handle; 33-7. Rolling block; 33-8. Guide block; 33-9. Guide groove. Detailed Implementation

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0033] Example 1

[0034] Reference Figures 1-9 This is the first embodiment of the present invention. This embodiment provides a metal support expansion rubber assembly for open hole sections, including a sealing assembly 2. The sealing assembly 2 improves the sealing reliability and effectively prevents well fluid from entering the interior of the rubber.

[0035] The main structure 1 includes an inner rubber sheet 11, a metal frame 12 fixedly connected to the surface of the inner rubber sheet 11, an outer rubber sheet 13 fixedly connected to the surface of the metal frame 12, an upper connector 14 fixedly connected to one side of the inner rubber sheet 11, and a lower connector 15 fixedly connected to the other side of the inner rubber sheet 11.

[0036] The inner rubber 11 and outer rubber 13 are key components for achieving expansion sealing. When liquid accumulates inside the inner rubber 11, both expand to achieve a sealing effect. The metal frame 12 is fixedly connected to the surface of the inner rubber 11, providing stable support during the expansion of the inner and outer rubbers and preventing excessive deformation of the rubbers from affecting the sealing effect. The upper connector 14 and lower connector 15 connect the conveying pipe and the sealing equipment respectively, serving as a connection and transmission mechanism, thus providing an interface for the liquid to enter and for the sealing equipment to operate.

[0037] It should be noted that the conveying pipelines and sealing equipment are existing technologies, which are clearly known to those skilled in the art and will not be described in detail here.

[0038] The sealing assembly 2 includes support rings 21 disposed on both sides of the inner rubber sheet 11. An inner ring 22 is fixedly connected to the side of the support ring 21 closest to the inner rubber sheet 11. An outer ring 23 is covered on the surface of the inner ring 22 and fixedly connected to the support ring 21. Sealing grooves 24 are provided on both sides of the inner rubber sheet 11 and cooperate with the outer ring 23. A sealing gasket 25 is fixedly connected to the inner wall of the sealing groove 24. A sealing groove 26 is provided on one side of the surface of the outer ring 23 and cooperates with the sealing gasket 25. A sealing airbag 27 is embedded on the other side of the surface. A trigger element 28 is provided on the surface of the inner ring 22 and cooperates with the sealing airbag 27. A through groove 29 is opened on the surface of the support ring 21. A first spring 30 is fixedly connected to the inner cavity of the through groove 29. A locking block 31 is fixedly connected to the side of the first spring 30 away from the through groove 29. The inner cavities of the upper connector 14 and the lower connector 15 are both provided with locking grooves 32 and cooperate with the locking block 31. A disassembly element 33 is provided on the side of the locking block 31 away from the locking groove 32.

[0039] The sealing assembly 2 is a crucial structure for enhancing overall sealing performance. The support ring 21 provides support and fixation for the entire sealing assembly. The inner ring 22 of the support ring 21, located near the inner rubber sheet 11, is inserted into and contacts the inner wall of the inner rubber sheet 11, thus supporting and sealing the end of the inner rubber sheet 11. The outer ring 23 engages with the sealing grooves 24 on both sides of the inner rubber sheet 11, further improving the sealing effect. The sealing gasket 25 on the inner wall of the sealing groove 24 engages with the sealing groove 26 on the surface of the outer ring 23, increasing the tightness of contact and enhancing sealing performance. The outer ring 23 is embedded with... The sealing airbag 27 expands after being triggered and can contact the sealing groove 24, thereby further improving the sealing performance; the trigger element 28 on the surface of the inner ring 22 can trigger the sealing airbag 27 to work under specific conditions; the first spring 30 in the through groove 29 on the surface of the support ring 21 applies elastic force to the locking block 31, so that the locking block 31 is locked into the locking groove 32 in the inner cavity of the upper connector 14 and the lower connector 15, thereby realizing the connection and fixation between the support ring 21 and the upper and lower connectors; the disassembly part 33 makes it convenient to remove the locking block 31 from the locking groove 32 when needed, so as to disassemble and maintain the support ring 21 and other components.

[0040] It should be noted that when the inner rubber 11 expands, its inner wall separates from the surface of the inner ring 22. At this time, the sealing gasket 25 will also bulge along with the inner rubber 11. However, since the sealing groove 26 is opened on the surface of the outer ring 23, the outer ring 23 has a certain rigidity and will not deform. At this time, the contact between the sealing gasket 25 and the sealing groove 26 will become tighter as the inner rubber 11 expands, thus forming a highly efficient seal.

[0041] Example 2

[0042] Reference Figures 1-9 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0043] Specifically, the trigger element 28 includes a receiving groove 28-1 formed on the surface of the inner ring 22. An abutment block 28-2 is slidably connected to the inner cavity of the receiving groove 28-1. A slide rod 28-3 is fixedly connected to the surface of the abutment block 28-2. A slide rail 28-4 is slidably connected to the surface of the slide rod 28-3. A piston rod 28-5 is fixedly connected to the surface of the slide rail 28-4. The side of the piston rod 28-5 away from the slide rail 28-4 passes through the inner ring 22 and is slidably connected to a sleeve 28-6. The sleeve 28-6 is fixedly connected to the inner cavity of the inner ring 22. A connecting pipe 28-7 is connected to the side of the sleeve 28-6 away from the piston rod 28-5. The side of the connecting pipe 28-7 away from the sleeve 28-6 passes through the support ring 21 and the outer ring 23 and is connected to the sealing airbag 27.

[0044] The receiving groove 28-1 provides space for the installation and sliding of the abutment block 28-2. When the inner rubber 11 expands and disengages from the inner ring 22, the abutment block 28-2 slides along the receiving groove 28-1 under the action of the relevant force, driving the slide rod 28-3 to move on the slide rail 28-4, which in turn causes the slide rail 28-4 to push the piston rod 28-5 to slide within the sleeve 28-6. The movement of the piston rod 28-5 changes the air pressure inside the sleeve 28-6, and the gas is delivered to the sealing airbag 27 through the connecting pipe 28-7, causing the sealing airbag 27 to expand, thereby enhancing the sealing effect. Furthermore, the trigger 28 can automatically trigger the sealing airbag 27 to work according to the expansion state of the inner rubber 11, ensuring that the sealing performance is strengthened in time when the rubber expands.

[0045] Specifically, the inner cavity of the sleeve 28-6 is slidably connected to the piston 28-8, and the side of the piston 28-8 away from the connecting pipe 28-7 is fixedly connected to the piston rod 28-5.

[0046] When the piston rod 28-5 moves under the drive of the slide rail 28-4, the piston 28-8 will slide synchronously inside the sleeve 28-6. This can more effectively change the volume inside the sleeve 28-6, thereby precisely controlling the intake and exhaust of gas. Through the sliding of the piston 28-8, it can be ensured that the gas can stably enter the sealing airbag 27 through the connecting pipe 28-7, or flow back from the sealing airbag 27 to the sleeve 28-6, thereby ensuring that the expansion and contraction process of the sealing airbag 27 is more reliable.

[0047] Specifically, a second spring 28-9 is fixedly connected to the side of the abutment block 28-2 away from the inner rubber 11, and the side of the second spring 28-9 away from the abutment block 28-2 is fixedly connected to the inner cavity of the receiving groove 28-1.

[0048] When the inner rubber 11 expands and disengages from the inner ring 22, the second spring 28-9 releases its elastic potential energy, pushing the abutment block 28-2 to slide along the receiving groove 28-1, providing power for the movement of the abutment block 28-2, thereby triggering the subsequent expansion of the sealing airbag 27; when the inner rubber 11 returns to contact the inner ring 22, the abutment block 28-2 is squeezed, compressing the second spring 28-9 and sliding into the receiving groove 28-1, so that the trigger 28 is reset for the next triggering, thereby ensuring the continuity and reliability of the operation of the trigger 28.

[0049] Specifically, sliders 28-10 are fixedly connected to both sides of the inner cavity of the receiving groove 28-1, and sliding grooves 28-11 are opened on both sides of the abutment block 28-2, which cooperate with the sliders 28-10.

[0050] During the sliding of the abutment block 28-2 along the receiving groove 28-1, the slider 28-10 slides in the sliding groove 28-11, which guides and limits the movement of the abutment block 28-2, preventing the abutment block 28-2 from deviating or shaking during the sliding process. This ensures that the abutment block 28-2 can stably drive the movement of components such as the sliding rod 28-3, and ensures the stability of the trigger 28.

[0051] Specifically, rollers 28-12 are fixedly connected to both sides of the inner cavity of the slide groove 28-11, and the surface of the rollers 28-12 is in contact with the slider 28-10.

[0052] When the slider 28-10 slides in the groove 28-11, the roller 28-12 rolls accordingly, converting the sliding friction between the slider 28-10 and the groove 28-11 into rolling friction, which greatly reduces the frictional resistance and makes the sliding of the abutment block 28-2 smoother, thereby improving the response speed and working efficiency of the trigger 28.

[0053] Specifically, a limiting ring 28-13 is fixedly connected to the side of the slide rail 28-4 away from the piston rod 28-5, and a limiting rod 28-14 is slidably connected to the inner cavity of the limiting ring 28-13. Both sides of the limiting rod 28-14 are fixedly connected to the inner cavity of the receiving groove 28-1.

[0054] As the slide rail 28-4 moves with the slide rod 28-3, the limiting ring 28-13 slides along the limiting rod 28-14, which further guides and limits the movement of the slide rail 28-4, preventing the slide rail 28-4 from tilting or deviating during the movement, thereby ensuring that the piston rod 28-5 can slide accurately within the sleeve 28-6.

[0055] Specifically, the disassembly component 33 includes a push rod 33-1 disposed in the inner cavity of the first spring 30. The side of the push rod 33-1 away from the locking block 31 passes through the support ring 21 and extends into the support ring 21. A push groove 33-2 is provided on the surface of the push rod 33-1. A push ring 33-3 is provided on the side of the push groove 33-2 near the inner rubber 11. A fixing plate 33-4 is fixedly connected to the side of the push ring 33-3 away from the inner rubber 11. A pull ring 33-5 is fixedly connected to the side of the fixing plate 33-4 away from the push ring 33-3. Handles 33-6 are fixedly connected to both sides of the inner cavity of the pull ring 33-5.

[0056] When disassembly is required, the pull ring 33-5 and the fixing plate 33-4 are moved by pulling the handle 33-6, which in turn moves the push ring 33-3. The push ring 33-3 cooperates with the push groove 33-2 on the surface of the push rod 33-1, which moves the push rod 33-1, causing the locking block 31 to compress the first spring 30 and move out of the locking groove 32, thereby realizing the separation of the support ring 21 from the upper and lower joints, which facilitates the maintenance or replacement of the components.

[0057] Specifically, guide blocks 33-8 are fixedly connected to both sides of the push ring 33-3, and guide grooves 33-9 are opened on both sides of the inner cavity of the support ring 21, which cooperate with the guide blocks 33-8.

[0058] When the push ring 33-3 moves, the guide block 33-8 slides along the guide groove 33-9, which guides and limits the movement of the push ring 33-3, ensuring the stable progress of the disassembly operation.

[0059] Working principle: The upper connector 14 is threadedly connected to the conveying pipe on one side, and the lower connector 15 is connected to the sealing device on one side. When expansion is required, the sealing device opens to seal the lower connector 15. Liquid then collects inside the inner rubber layer 11, causing the inner rubber layer 11 and outer rubber layer 13 to expand. At this time, the metal frame 12 provides support. During this process, the sealing component 2 enhances the sealing performance. The inner ring 22 is inserted into the inner rubber layer 11, contacting the inner wall of the inner rubber layer 11, providing support and sealing at the ends. The outer ring 23 is inserted into the sealing groove 24, further improving the sealing performance. Sealing effect: When the inner rubber 11 expands, its inner wall bulges, causing the sealing gasket 25 to fully contact the sealing groove 26, thereby increasing the sealing performance. At the same time, when the inner wall of the inner rubber 11 bulges, it will separate from the inner ring 22. Then, the second spring 28-9 releases its elastic potential energy, causing the abutment block 28-2 and the slide rod 28-3 to move, causing the slide rail 28-4 to drive the piston rod 28-5 and the piston 28-8 to move. This allows the gas in the sleeve 28-6 to enter the sealing airbag 27 through the connecting pipe 28-7, causing the sealing airbag 27 to expand and contact the sealing groove 24, further enhancing the sealing performance.

[0060] When the sealing device is released, the inner rubber 11 and outer rubber 13 are restored, the sealing gasket 25 is also restored to its original state, the inner wall of the inner rubber 11 contacts the inner ring 22, and then the abutment block 28-2 will compress the second spring 28-9 and slide into the receiving groove 28-1. At the same time, the slide rod 28-3, slide rail 28-4, piston rod 28-5 and piston 28-8 are reset, and the gas in the sealing airbag 27 is drawn into the sleeve 28-6 for storage.

[0061] If it is necessary to disassemble the support ring 21, the handle 33-6 can be pulled to move the pull ring 33-5, the fixing plate 33-4 and the push ring 33-3, so that the guide block 33-8 slides along the guide groove 33-9, while the rolling block 33-7 rolls in the push groove 33-2, pushing the push rod 33-1 to move, so that the locking block 31 compresses the first spring 30 and moves out of the locking groove 32, releasing the limit on the support ring 21, thereby completing the disassembly.

[0062] Example 3

[0063] Reference Figure 4 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0064] Specifically, a rolling block 33-7 is rotatably connected to the side of the push ring 33-3 near the push groove 33-2, and it cooperates with the push groove 33-2.

[0065] During the movement of the pushing ring 33-3, the rolling block 33-7 rolls in the pushing groove 33-2, converting the sliding friction between the pushing ring 33-3 and the pushing rod 33-1 into rolling friction, reducing frictional resistance, making the pushing process smoother and less strenuous, and thus facilitating disassembly operations.

[0066] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A metal support expansion rubber assembly for open-hole sections, characterized in that: include, The main structure (1) includes an inner rubber sheet (11), a metal frame (12) is fixedly connected to the surface of the inner rubber sheet (11), an outer rubber sheet (13) is fixedly connected to the surface of the metal frame (12), an upper connector (14) is fixedly connected to one side of the inner rubber sheet (11), and a lower connector (15) is fixedly connected to the other side of the inner rubber sheet (11). The sealing assembly (2) includes support rings (21) disposed on both sides of the inner rubber sheet (11). An inner ring (22) is fixedly connected to the side of the support ring (21) near the inner rubber sheet (11). An outer ring (23) is covered on the surface of the inner ring (22). Sealing grooves (24) are provided on both sides of the inner rubber sheet (11) and cooperate with the outer ring (23). A sealing gasket (25) is fixedly connected to the inner wall of the sealing groove (24). A sealing groove (26) is provided on one side of the surface of the outer ring (23), and a sealing gasket (25) is embedded on the other side of the surface of the outer ring (23). There is a sealing airbag (27), and a trigger (28) is provided on the surface of the inner ring (22) and cooperates with the sealing airbag (27). A through groove (29) is opened on the surface of the support ring (21). A first spring (30) is fixedly connected to the inner cavity of the through groove (29). A locking block (31) is fixedly connected to the side of the first spring (30) away from the through groove (29). The inner cavities of the upper connector (14) and the lower connector (15) are both provided with locking grooves (32). A disassembly part (33) is provided on the side of the locking block (31) away from the locking groove (32).

2. The metal support expansion rubber assembly for open-hole sections as described in claim 1, characterized in that: The trigger (28) includes a receiving groove (28-1) formed on the surface of the inner ring (22). An abutment block (28-2) is slidably connected to the inner cavity of the receiving groove (28-1). A slide rod (28-3) is fixedly connected to the surface of the abutment block (28-2). A slide rail (28-4) is slidably connected to the surface of the slide rod (28-3). A piston rod (28-5) is fixedly connected to the surface of the slide rail (28-4). 5) The inner ring (22) is penetrated on the side away from the slide rail (28-4) and is slidably connected to a sleeve (28-6). The sleeve (28-6) is fixedly connected to the inner cavity of the inner ring (22). The side of the sleeve (28-6) away from the piston rod (28-5) is connected to a connecting pipe (28-7). The side of the connecting pipe (28-7) away from the sleeve (28-6) penetrates the support ring (21) and the outer ring (23) and is connected to the sealing airbag (27).

3. The metal support expansion rubber assembly for open-hole sections as described in claim 2, characterized in that: The inner cavity of the sleeve (28-6) is slidably connected to a piston (28-8), and the side of the piston (28-8) away from the connecting pipe (28-7) is fixedly connected to the piston rod (28-5).

4. The metal support expansion rubber assembly for open-hole sections as described in claim 3, characterized in that: A second spring (28-9) is fixedly connected to the side of the abutment block (28-2) away from the inner rubber (11), and the side of the second spring (28-9) away from the abutment block (28-2) is fixedly connected to the inner cavity of the receiving groove (28-1).

5. The metal support expansion rubber assembly for open-hole sections as described in claim 4, characterized in that: The inner cavity of the receiving groove (28-1) is fixedly connected to both sides of the slider (28-10), and the abutment block (28-2) is provided with sliding grooves (28-11) on both sides, which cooperate with the slider (28-10).

6. The metal support expansion rubber assembly for open-hole sections as described in claim 5, characterized in that: Rollers (28-12) are fixedly connected to both sides of the inner cavity of the groove (28-11), and the surface of the rollers (28-12) is in contact with the slider (28-10).

7. The metal support expansion rubber assembly for open-hole sections as described in claim 2, characterized in that: A limiting ring (28-13) is fixedly connected to the side of the slide rail (28-4) away from the piston rod (28-5). A limiting rod (28-14) is slidably connected to the inner cavity of the limiting ring (28-13). Both sides of the limiting rod (28-14) are fixedly connected to the inner cavity of the receiving groove (28-1).

8. The metal support expansion rubber assembly for open-hole sections as described in claim 1, characterized in that: The disassembly component (33) includes a push rod (33-1) disposed in the inner cavity of the first spring (30). The push rod (33-1) passes through the support ring (21) on the side away from the locking block (31) and extends into the support ring (21). A push groove (33-2) is provided on the surface of the push rod (33-1). A push ring (33-3) is provided on the side of the push groove (33-2) near the inner rubber (11). A fixing plate (33-4) is fixedly connected to the side of the push ring (33-3) away from the inner rubber (11). A pull ring (33-5) is fixedly connected to the side of the fixing plate (33-4) away from the push ring (33-3). A handle (33-6) is fixedly connected to both sides of the inner cavity of the pull ring (33-5).

9. The metal support expansion rubber assembly for open-hole sections as described in claim 8, characterized in that: The pushing ring (33-3) is rotatably connected to a rolling block (33-7) on the side near the pushing groove (33-2), and it cooperates with the pushing groove (33-2).

10. The metal support expansion rubber assembly for open-hole sections as described in claim 9, characterized in that: Guide blocks (33-8) are fixedly connected to both sides of the push ring (33-3), and guide grooves (33-9) are opened on both sides of the inner cavity of the support ring (21), which cooperate with the guide blocks (33-8).

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