CN220302101U - Compression type large annular packer airtight assembly - Google Patents
Compression type large annular packer airtight assembly Download PDFInfo
- Publication number
- CN220302101U CN220302101U CN202321009337.XU CN202321009337U CN220302101U CN 220302101 U CN220302101 U CN 220302101U CN 202321009337 U CN202321009337 U CN 202321009337U CN 220302101 U CN220302101 U CN 220302101U
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- rubber cylinder
- ring
- compression
- middle rubber
- type large
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- 238000007906 compression Methods 0.000 title claims abstract description 38
- 230000006835 compression Effects 0.000 title claims abstract description 36
- 229920001971 elastomer Polymers 0.000 claims abstract description 82
- 238000000034 method Methods 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 18
- 229920000459 Nitrile rubber Polymers 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 229920001973 fluoroelastomer Polymers 0.000 claims description 5
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 4
- 239000010962 carbon steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 12
- 238000005260 corrosion Methods 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 125000006850 spacer group Chemical group 0.000 description 6
- 239000007769 metal material Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The utility model relates to the technical field of oil and gas field equipment, in particular to a compression type large annular packer airtight component, which comprises a middle rubber cylinder, wherein a retaining ring is arranged in the middle rubber cylinder, the middle rubber cylinder is used for deforming and plugging an annular space in compression, and the retaining ring is used for keeping the axial angle of compression deformation of the middle rubber cylinder so as not to deviate in the opening process; the upper part and the lower part of the middle rubber cylinder are respectively provided with an end rubber cylinder, and the middle rubber cylinder is used for deforming and plugging the annular space in compression; a spacing ring is arranged between the middle rubber cylinder and the end rubber cylinder, and the spacing ring is used for keeping the axial angle of the compression deformation of the end rubber cylinder so that the end rubber cylinder does not deviate in the opening process. According to the utility model, through the rubber sealing component in various combination forms, the temperature resistance, pressure resistance and corrosion resistance of the rubber sealing component are excellent, and the problem that the existing packer sealing component cannot meet the requirement of gas production wells and can have absolute leakage points in airtight environments is solved.
Description
Technical Field
The utility model relates to the technical field of oil and gas field equipment, in particular to a compression type large annular packer airtight component.
Background
In recent years, with the continuous improvement of geological exploration and petroleum development technologies, in order to respond to the state of promoting green low-carbon transformation, each oil field has increased the development of gas fields, and because of the great complexity of gas fields and high gas production difficulty, the packer has to be ensured to have stronger airtight resistance, and the conventional packer sealing assembly cannot meet the requirement of gas production wells, and the use of the conventional packer structure may have absolute leakage points in airtight environments.
In view of the foregoing, it is difficult to meet the above requirements under conventional liquid seal designs, and with the rigors of gas production, there is a need for a reliable protection scheme for a gas-tight packer seal assembly that ensures the normal use requirements of the downhole tool.
Disclosure of Invention
The utility model aims to provide a compression type large annular packer air-tight sealing component, which has excellent temperature resistance, pressure resistance and corrosion resistance through a plurality of combined rubber sealing components, and solves the problem that the existing packer sealing component cannot meet the requirement of gas production wells and can have absolute leakage points in airtight environments.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the compression type large annulus packer airtight component comprises a middle rubber cylinder, wherein a retaining ring is arranged in the middle rubber cylinder, the middle rubber cylinder is used for deforming and plugging an annulus in compression, and the retaining ring is used for keeping the axial angle of compression deformation of the middle rubber cylinder so that the axial angle is not deviated in the opening process;
the upper part and the lower part of the middle rubber cylinder are respectively provided with an end rubber cylinder, and the middle rubber cylinder is used for deforming and plugging the annular space in compression;
and a spacing ring is arranged between the middle rubber cylinder and the end rubber cylinder and is used for keeping the axial angle of compression deformation of the end rubber cylinder so that the end rubber cylinder does not deviate in the opening process.
Preferably, the rubber sleeve is further provided with a back ring which can be opened back and forth and is used for protecting the end rubber sleeve from being extruded.
Preferably, an extension ring is arranged outside the back ring, and the extension ring is used for expanding to a large annulus casing wall or an open hole wall after compression.
Preferably, a support ring is arranged between the extension ring and the back ring, and the support ring is used for maintaining the axial angle of the extension ring so that the extension ring cannot deviate in the opening process.
Preferably, the materials of the extension ring, the support ring, the back ring, the spacer ring and the retaining ring are at least one of heat-resistant steel, wear-resistant steel, stainless steel and carbon steel.
Preferably, the end rubber cylinder and the middle rubber cylinder are at least one of nitrile rubber, hydrogenated nitrile rubber, fluororubber, tetrapropylfluororubber and perfluorinated rubber.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, the retainer ring and the spacer ring are arranged, so that the annular gap can be uniformly plugged in the compression deformation process by righting the retainer ring in the compression process; in order to prevent unstable contact deformation between the middle rubber cylinder and the end rubber cylinder in the axial extrusion process, a spacer ring is added to effectively help the end rubber cylinder to open the back ring in the extrusion expansion process; through the rubber seal assembly of multiple combined forms, its temperature resistance, withstand voltage and corrosion-resistant ability are superior, and in this product can realize all pounds of level sleeve pipes in the same specification simultaneously, can shutoff tubular column and the irregular space of bore hole wall of a well spare, and when the environmental control is too big, provide more perfect protection, solved current packer seal assembly and can't satisfy the gas production well and use, its use probably has the problem of absolute leakage point under airtight environment.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model.
In the figure: 1. an extension ring; 2. a support ring; 3. a back ring; 4. an end rubber cylinder; 5. a spacer ring; 6. a middle rubber cylinder; 7. and a retaining ring.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1, the air sealing assembly of the compression type large annulus packer comprises a middle rubber cylinder 6, wherein a retaining ring 7 is arranged inside the middle rubber cylinder 6, the middle rubber cylinder 6 is used for deforming and plugging an annulus in compression, and the retaining ring 7 is used for keeping the axial angle of the compression deformation of the middle rubber cylinder 6 so as not to deviate in the opening process;
the upper part and the lower part of the middle rubber cylinder 6 are respectively provided with an end rubber cylinder 4, and the middle rubber cylinder 6 is used for deforming and plugging the annular space in compression; the end rubber cylinder 4 and the middle rubber cylinder 6 adopt organic polymer compounds with special medium, and can deform and seal annular space in compression.
A spacing ring 5 is arranged between the middle rubber cylinder 6 and the end rubber cylinder 4, and the spacing ring 5 is used for keeping the axial angle of the compression deformation of the end rubber cylinder 4 so that the end rubber cylinder 4 does not deviate in the opening process. The sealing assembly is sealed in operation through compression type setting, the extension ring 1 and the back ring 3 are opened back and forth to protect the end rubber cylinder 4 from being extruded, the middle rubber cylinder 6 is extruded under the stress, and a sealing surface is formed to be tightly adhered to the annular wall after being opened in an annular mode with the aid of the retaining ring 7, so that the sealing effect is achieved.
The spacer ring 5 and the retaining ring 7 are made of metal materials with certain hardness and corrosion resistance, so that the rubber sleeve can be maintained at an axial angle without deflection in the opening process.
The rubber sleeve is characterized by further comprising a back ring 3 which can be opened back and forth, wherein the back ring 3 is used for protecting the end rubber sleeve 4 from being extruded. The back ring 3 is made of high-strength metal, the head part of the three layers of back rings 3 and the main body material are integrated, the back ring 3 extends to the tail part after the shoulder part is divided into three independent units, the inner back ring 3 of the back ring 3 is in an integrated circular ring shape, the tail part is provided with bending joints for providing shoulder protection for rubber parts, the middle layer back ring 3 and the outer back ring 3 are staggered to form a joint seam according to actual needs, the outer back ring 3 is provided with reinforcing rib protection at three bending joints, and the inner diameter part of the head part of the back ring 3 is shaped like an eagle claw to provide inner diameter extrusion-proof protection for a rubber sleeve of the packer.
The outside of the back ring 3 is provided with an extension ring 1, the extension ring 1 is made of a metal material with high corrosion resistance and high ductility, and is provided with a lancing treatment so as to be capable of expanding to a large annular sleeve wall or an open hole wall after being compressed.
The support ring 2 is arranged between the extension ring 1 and the back ring 3, and the support ring 2 is made of a metal material with certain hardness and corrosion resistance, so that the extension ring 1 can be provided with assistance to maintain an axial angle, and cannot deviate in the opening process.
The extending ring 1, the supporting ring 2, the back ring 3, the spacing ring 5 and the retaining ring 7 are made of at least one of heat-resistant steel, wear-resistant steel, stainless steel and carbon steel.
The end rubber cylinder 4 and the middle rubber cylinder 6 are at least one of nitrile rubber, hydrogenated nitrile rubber, fluororubber, tetrapropylfluororubber and perfluorinated rubber.
The material of the extension ring 1, the support ring 2, the back ring 3, the spacer ring 5 and the retaining ring 7 is specifically any one or a combination of a plurality of heat-resistant steel, wear-resistant steel, stainless steel and carbon steel; the end rubber cylinder 4 and the middle rubber cylinder 6 are specifically any one or a combination of more than one of nitrile rubber, hydrogenated nitrile rubber, fluororubber, tetrapropylfluororubber and perfluorinated rubber.
According to the utility model, the extension ring 1 is arranged, so that the annular space can be preferentially propped open in the extrusion expansion process to provide a first protection for the back ring 3, and once the back ring 3 is used in a large annular space or an irregular naked eye environment in the expansion process, a certain risk exists that the back ring is folded from the gap and cannot provide protection for the end rubber cylinder 4, so that a joint cutting extension ring 1 is additionally arranged for protection.
The compressible expansion type back ring 3 with the reinforcing rib design is matched by adopting the high-strength corrosion-resistant metal material with certain ductility, the two metal protection rings are used at the end part of the rubber cylinder sealing assembly after compression, the two metal protection rings can be continuously spread to be close to the sleeve wall or the naked eye wall, the rubber material can be protected to be extruded from the annular space in the compression process during bearing pressure, and the supporting ring 2, the spacing ring 5 and the holding ring 7 can provide certain protection for preventing axial deflection in the compression expansion process.
The component is made of metal materials with certain ductility and strength, and is resistant to organic high molecular compounds of special media, and the combined component can bear pressure to 15KPsi in a 204 ℃ airtight environment; and can be used in sleeves of different pounds of the same specification.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a big annular space packer airtight subassembly of compression which characterized in that: the device comprises a middle rubber cylinder (6), wherein a retaining ring (7) is arranged inside the middle rubber cylinder (6), the middle rubber cylinder (6) is used for deforming and plugging an annular space in compression, and the retaining ring (7) is used for keeping the axial angle of compression deformation of the middle rubber cylinder (6) so that the middle rubber cylinder is not deviated in the opening process;
the upper part and the lower part of the middle rubber cylinder (6) are respectively provided with an end rubber cylinder (4), and the middle rubber cylinder (6) is used for deforming and plugging the annular space in compression;
a spacing ring (5) is arranged between the middle rubber cylinder (6) and the end rubber cylinder (4), and the spacing ring (5) is used for keeping the axial angle of compression deformation of the end rubber cylinder (4) so that the end rubber cylinder is not deviated in the opening process.
2. The compression type large annulus packer air tight seal assembly of claim 1, wherein: the novel rubber tube is characterized by further comprising a back ring (3) which can be opened back and forth, wherein the back ring (3) is used for protecting the end rubber tube (4) from being extruded.
3. The compression type large annulus packer air tight seal assembly of claim 2, wherein: an extension ring (1) is arranged outside the back ring (3), and the extension ring (1) is used for expanding to a large annular sleeve wall or an open hole wall after compression.
4. The compression type large annulus packer air tight seal assembly of claim 3, wherein: a support ring (2) is arranged between the extension ring (1) and the back ring (3), and the support ring (2) is used for keeping the axial angle of the extension ring (1) so that the extension ring cannot deviate in the opening process.
5. The compression type large annulus packer air tight seal assembly of claim 4, wherein: the extending ring (1), the supporting ring (2), the back ring (3), the spacing ring (5) and the holding ring (7) are made of at least one of heat-resistant steel, wear-resistant steel, stainless steel and carbon steel.
6. The compression type large annulus packer air tight seal assembly of claim 1, wherein: the end rubber cylinder (4) and the middle rubber cylinder (6) are at least one of nitrile rubber, hydrogenated nitrile rubber, fluororubber, tetrapropylacetonate fluororubber and perfluorinated rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321009337.XU CN220302101U (en) | 2023-04-28 | 2023-04-28 | Compression type large annular packer airtight assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321009337.XU CN220302101U (en) | 2023-04-28 | 2023-04-28 | Compression type large annular packer airtight assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220302101U true CN220302101U (en) | 2024-01-05 |
Family
ID=89353414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321009337.XU Active CN220302101U (en) | 2023-04-28 | 2023-04-28 | Compression type large annular packer airtight assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220302101U (en) |
-
2023
- 2023-04-28 CN CN202321009337.XU patent/CN220302101U/en active Active
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