Novel mechanical hydraulic packer
By introducing inner rubber cylinder, outer rubber cylinder, elastic structure and reinforcement components into mechanical hydraulic packers, the problem of easy tear of rubber cylinder in high-pressure environment is solved, and higher resistance to extrusion and crack resistance is achieved. Service life.
Patent Information
- Application Number
- CN202420875099.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-24
AI Technical Summary
Existing mechanical hydraulic packers are prone to tear and damage caused by extrusion pressure in high-pressure downhole environments, affecting the overall performance.
A mechanical hydraulic packer including inner rubber cylinder, outer rubber cylinder, elastic structure, upper vertebrae and lower vertebrae was designed, and the components of X-shaped elastic parts, fiber mesh layer, metal reinforcement ring and reduced force structure are used. , enhance the anti-extrusion and crack resistance of the rubber cylinder, and improve the compression resistance through reinforcement grooves and reinforcement plates.
It effectively improves the anti-extrusion and crack resistance of the packer, extends the service life, and maintains elastic recovery ability when pressure changes, enhancing overall performance.
Smart Images
Figure CN222296180U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of packers, in particular to a novel mechanical hydraulic packer. Background Art
[0002] A packer refers to a downhole tool connected to the downhole tubing and used to isolate the annular space between the oil pipe and the oil and gas well casing or the open hole well wall. When it is necessary to isolate the annular space between the oil pipe and the oil and gas well casing or the open hole well wall, the packer is connected to the downhole tubing, and after it is lowered to the designed depth, the sealing components on the packer are expanded by hydraulic drive and other means to isolate the casing annulus.
[0003] After the packer is installed on the central pipe, it gradually moves downward. The packer is affected by the downhole working environment. The high-pressure environment downhole squeezes the rubber tube with the extrusion force. The high pressure causes tearing damage to the rubber tube, which damages the rubber tube and affects the overall performance of the packer. Utility Model Content
[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a novel mechanical hydraulic packer, which has the effect of improving the anti-extrusion and anti-cracking capabilities of the rubber cylinder.
[0005] The above technical objectives of the utility model are achieved through the following technical solutions:
[0006] A novel mechanical hydraulic packer comprises a packer body, wherein a center tube is arranged in the packer body, an inner rubber tube structure is arranged on the circumferential side of the center tube, an upper vertebral body and a lower vertebral body are arranged on both sides of the inner rubber tube structure, the upper vertebral body and the lower vertebral body are both slidably connected to the circumferential side of the lower vertebral body, three outer rubber tube structures are arranged on the circumferential side of the inner rubber tube structure, two groups of elastic structures are arranged between the three outer rubber tube structures, each group of the elastic structures comprises two connecting rings and a plurality of X-shaped elastic parts, the two X-shaped elastic parts are fixedly connected to the circumferential side of the inner rubber tube structure, and the plurality of X-shaped elastic parts are fixedly connected between the two connecting rings.
[0007] By adopting the above technical solution, the packer body, the central tube, the inner rubber tube structure, the outer rubber tube structure, the elastic structure, the lower vertebra and the upper vertebra, the elastic structure can improve the anti-extrusion ability between the outer rubber tube structure.
[0008] In a preferred example, the utility model can be further configured as follows: the outer rubber tube structure includes a first outer rubber tube layer, a fiber mesh layer and a second outer rubber tube layer, the first outer rubber tube layer is fixedly connected to the circumferential side of the inner rubber tube structure, the fiber mesh layer is fixedly connected to the circumferential side of the first outer rubber tube layer, and the second outer rubber tube layer is fixedly connected to the circumferential side of the fiber mesh layer.
[0009] By adopting the above technical solution, the fiber mesh layer in the outer rubber tube structure can improve the overall crack resistance of the outer rubber tube structure.
[0010] In a preferred example, the utility model can be further configured as follows: both sides of the inner rubber tube structure are fixedly connected with connecting pieces, and the upper vertebral body and the lower vertebral body are respectively threadedly connected to the circumferential sides of the two connecting pieces.
[0011] By adopting the above technical solution, the connecting piece can facilitate the connection between the lower vertebral body and the upper vertebral body.
[0012] In a preferred example, the utility model can be further configured as follows: one side of the upper vertebral body and the lower vertebral body are fixedly connected with a metal reinforcement ring, one side of the two metal reinforcement rings are provided with a force reduction structure, and the two groups of force reduction structures are respectively connected to the two outer rubber tube structures on the side.
[0013] By adopting the above technical solution, both sides of the inner rubber tube structure can be protected.
[0014] In a preferred example, the utility model can be further configured as follows: each group of the force reduction structure includes a first metal ring, a second metal ring and a plurality of curved metal spring sheets, the first metal ring is fixedly connected to one side of the outer rubber tube structure, the second metal ring is fixedly connected to one side of the lower vertebral body, and the plurality of curved metal spring sheets are fixedly connected between the first metal ring and the second metal ring.
[0015] By adopting the above technical solution, the force reduction structure can improve the anti-extrusion ability between the upper vertebral body and the lower vertebral body.
[0016] In a preferred example, the utility model can be further configured as follows: a plurality of reinforcement grooves are evenly opened on the circumferential side of the inner rubber tube structure, and the inner bottom walls of the plurality of reinforcement grooves are fixedly connected with reinforcement plates.
[0017] By adopting the above technical solution, the reinforcement plate can improve the compressive resistance of the inner rubber tube structure.
[0018] In summary, the present invention includes at least one of the following beneficial technical effects:
[0019] 1. A packer body, a central tube, an inner rubber tube structure, an outer rubber tube structure, an elastic structure, a lower cone and an upper cone are provided. When the packer body is installed in the pipeline, when the packer body is subjected to high pressure caused by the downhole formation or by operations such as fracturing and acidizing, the inner rubber tube structure and the outer rubber tube structure are subjected to pressure, the lower cone and the upper cone can squeeze the inner rubber tube structure and the outer rubber tube structure, the outer rubber tube structures squeeze each other, and the X-shaped elastic member is in an extruded state. When the pressure disappears, the X-shaped elastic member pushes the two connecting rings to return the outer rubber tube structure to its original position. Under pressurized conditions, the elastic structure can improve the anti-extrusion and elastic recovery capabilities between the outer rubber tube structures, thereby improving the overall pressure resistance and service life of the rubber tube.
[0020] 2. A force reduction structure, a metal reinforcement ring and an inner rubber tube structure are provided. When the upper vertebral body and the lower vertebral body are subjected to pressure, the curved metal spring is squeezed inside and is in a compressed state. The force reduction structure reduces the extrusion force transmitted from the lower vertebral body and the upper vertebral body. When the extrusion force is transmitted to the inner rubber tube structure and the outer rubber tube structure, a part of it has been reduced, thereby improving the service life of the inner rubber tube structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is a stereogram of this embodiment;
[0022] Figure 2 is a three-dimensional cross-sectional view of this embodiment;
[0023] Figure 3 This embodiment Figure 2 A partial enlarged view of the middle A;
[0024] Figure 4 It is a structural diagram of the outer rubber cylinder of this embodiment;
[0025] Figure 5 is a structural diagram of the anti-extrusion structure of this embodiment;
[0026] Figure 6 It is a structural diagram of the reinforcement plate of this embodiment.
[0027] In the figure, 1. the main body of the packer; 2. the central tube; 3. the lower cone; 4. the outer rubber tube structure; 401. the first outer rubber tube layer; 402. the fiber mesh layer; 403. the second outer rubber tube layer; 5. the elastic structure; 501. the connecting ring; 502. the X-shaped elastic part; 6. the force reducing structure; 601. the first metal ring; 602. the bent metal spring; 603. the second metal ring; 7. the metal reinforcement ring; 8. the upper cone; 9. the connecting part; 10. the inner rubber tube structure; 11. the reinforcement groove; 12. the reinforcement plate. DETAILED DESCRIPTION
[0028] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0029] Example:
[0030] Reference Figure 1-5 The utility model discloses a novel mechanical hydraulic packer, comprising a packer body 1, a central tube 2 is arranged in the packer body 1, an inner rubber tube structure 10 is arranged on the circumferential side of the central tube 2, an upper vertebral body 8 and a lower vertebral body 3 are arranged on both sides of the inner rubber tube structure 10, the upper vertebral body 8 and the lower vertebral body 3 are slidably connected to the circumferential side of the lower vertebral body 3, three outer rubber tube structures 4 are arranged on the circumferential side of the inner rubber tube structure 10, two groups of elastic structures 5 are arranged between the three outer rubber tube structures 4, each group of elastic structures 5 includes two connecting rings 501 and a plurality of X-shaped elastic members 502, the two X-shaped elastic members 502 are fixedly connected to the circumferential side of the inner rubber tube structure 10, and the plurality of X-shaped elastic members 502 are fixedly connected to the circumferential side of the inner rubber tube structure 10. The X-shaped elastic members 502 are fixedly connected between the two connecting rings 501. When the packer body 1 is installed in the pipeline, when the packer body 1 is subjected to high pressure caused by the downhole formation or fracturing, acidizing and other operations, the inner rubber tube structure 10 and the outer rubber tube structure 4 are subjected to pressure, the lower vertebral body 3 and the upper vertebral body 8 can squeeze the inner rubber tube structure 10 and the outer rubber tube structure 4, the outer rubber tube structures 4 squeeze each other, and the X-shaped elastic member 502 is in an extruded state. When the pressure disappears, the X-shaped elastic member 502 pushes the two connecting rings 501 to make the outer rubber tube structure 4 return to its original position. Under the condition of pressurization, the elastic structure 5 can improve the anti-extrusion and elastic recovery capabilities between the outer rubber tube structures 4.
[0031] The outer rubber tube structure 4 includes a first outer rubber tube layer 401, a fiber mesh layer 402 and a second outer rubber tube layer 403. The first outer rubber tube layer 401 is fixedly connected to the circumferential side of the inner rubber tube structure 10, the fiber mesh layer 402 is fixedly connected to the circumferential side of the first outer rubber tube layer 401, and the second outer rubber tube layer 403 is fixedly connected to the circumferential side of the fiber mesh layer 402. The fiber mesh layer 402 in the outer rubber tube structure 4 can improve the overall crack resistance of the outer rubber tube structure 4.
[0032] Connectors 9 are fixedly connected to both sides of the inner rubber tube structure 10 . The upper vertebral body 8 and the lower vertebral body 3 are respectively threadedly connected to the circumferential sides of the two connectors 9 . The connectors 9 can facilitate the connection between the lower vertebral body 3 and the upper vertebral body 8 .
[0033] One side of the upper vertebral body 8 and the lower vertebral body 3 are fixedly connected with a metal reinforcement ring 7, and one side of the two metal reinforcement rings 7 are provided with a force reduction structure 6, and the two groups of force reduction structures 6 are respectively connected to the two outer rubber tube structures 4 on the side, and can be protected by the inner rubber tube structure 10 on both sides.
[0034] Each group of force reduction structures 6 includes a first metal ring 601, a second metal ring 603 and a plurality of curved metal spring sheets 602. The first metal ring 601 is fixedly connected to one side of the outer rubber tube structure 4, the second metal ring 603 is fixedly connected to one side of the lower vertebral body 3, and the plurality of curved metal spring sheets 602 are fixedly connected between the first metal ring 601 and the second metal ring 603. When the upper vertebral body 8 and the lower vertebral body 3 are subjected to pressure, the curved metal spring sheets 602 are squeezed inward and are in a compressed state. The force reduction structure 6 reduces the extrusion force transmitted from the lower vertebral body 3 and the upper vertebral body 8. When the extrusion force is transmitted to the inner rubber tube structure 10 and the outer rubber tube structure 4, a part of the extrusion force has been reduced, thereby improving the service life of the inner rubber tube structure 10.
[0035] A plurality of reinforcement grooves 11 are evenly formed on the circumferential side of the inner rubber cylinder structure 10 . The inner bottom walls of the plurality of reinforcement grooves 11 are fixedly connected with reinforcement plates 12 . The reinforcement plates 12 can improve the pressure resistance of the inner rubber cylinder structure 10 .
[0036] The implementation principle of the above embodiment is: when the packer body 1 is installed in the pipeline, when the packer body 1 is subjected to high pressure caused by the downhole formation or fracturing, acidizing and other operations, the inner rubber tube structure 10 and the outer rubber tube structure 4 are under pressure, the lower vertebral body 3 and the upper vertebral body 8 can squeeze the inner rubber tube structure 10 and the outer rubber tube structure 4, the outer rubber tube structures 4 squeeze each other, and the X-shaped elastic member 502 is in an extruded state. When the pressure disappears, the X-shaped elastic member 502 pushes the two connecting rings 501 to return the outer rubber tube structure 4 to its original position. Under pressurized conditions, the elastic structure 5 can improve the anti-extrusion and elastic recovery capabilities between the outer rubber tube structures 4.
[0037] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.
[0038] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A novel mechanical hydraulic packer, comprising a packer body (1), characterized in that: A central tube (2) is arranged in the packer body (1), and an inner rubber tube structure (10) is arranged on the circumferential side of the central tube (2). An upper vertebral body (8) and a lower vertebral body (3) are arranged on both sides of the inner rubber tube structure (10), and the upper vertebral body (8) and the lower vertebral body (3) are both slidably connected to the circumferential side of the lower vertebral body (3). Three outer rubber tube structures (4) are arranged on the circumferential side of the inner rubber tube structure (10), and two groups of elastic structures (5) are arranged between the three outer rubber tube structures (4). Each group of the elastic structures (5) includes two connecting rings (501) and a plurality of X-shaped elastic parts (502). The two X-shaped elastic parts (502) are fixedly connected to the circumferential side of the inner rubber tube structure (10), and the plurality of X-shaped elastic parts (502) are fixedly connected between the two connecting rings (501).
2. A novel mechanical hydraulic packer according to claim 1, characterized in that: The outer rubber tube structure (4) comprises a first outer rubber tube layer (401), a fiber mesh layer (402) and a second outer rubber tube layer (403), wherein the first outer rubber tube layer (401) is fixedly connected to the circumferential side of the inner rubber tube structure (10), the fiber mesh layer (402) is fixedly connected to the circumferential side of the first outer rubber tube layer (401), and the second outer rubber tube layer (403) is fixedly connected to the circumferential side of the fiber mesh layer (402).
3. A novel mechanical hydraulic packer according to claim 1, characterized in that: Connecting pieces (9) are fixedly connected to both sides of the inner rubber cylinder structure (10), and the upper vertebral body (8) and the lower vertebral body (3) are respectively threadedly connected to the circumferential sides of the two connecting pieces (9).
4. A novel mechanical hydraulic packer according to claim 1, characterized in that: One side of the upper vertebral body (8) and the lower vertebral body (3) are both fixedly connected with a metal reinforcement ring (7), one side of the two metal reinforcement rings (7) are both provided with a force reduction structure (6), and the two groups of force reduction structures (6) are respectively connected to the two outer rubber tube structures (4) on the side.
5. A novel mechanical hydraulic packer according to claim 4, characterized in that: Each group of the force reduction structure (6) comprises a first metal ring (601), a second metal ring (603) and a plurality of curved metal spring sheets (602); the first metal ring (601) is fixedly connected to one side of the outer rubber tube structure (4); the second metal ring (603) is fixedly connected to one side of the lower vertebral body (3); and the plurality of curved metal spring sheets (602) are fixedly connected between the first metal ring (601) and the second metal ring (603).
6. A novel mechanical hydraulic packer according to claim 1, characterized in that: A plurality of reinforcement grooves (11) are evenly arranged on the circumferential side of the inner rubber cylinder structure (10), and a reinforcement plate (12) is fixedly connected to the inner bottom walls of the plurality of reinforcement grooves (11).