CN214886973U - Compression spring MESH packer seal assembly - Google Patents
Compression spring MESH packer seal assembly Download PDFInfo
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- CN214886973U CN214886973U CN202120277471.2U CN202120277471U CN214886973U CN 214886973 U CN214886973 U CN 214886973U CN 202120277471 U CN202120277471 U CN 202120277471U CN 214886973 U CN214886973 U CN 214886973U
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- packing element
- seal assembly
- compression spring
- packer seal
- mesh
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Abstract
The utility model discloses a compression spring MESH packer seal assembly, including middle packing element, end packing element and metal spacer ring, the easy compression packing element that middle packing element was made for macromolecular material, the both sides of this middle packing element are equipped with an end packing element respectively, separate through the metal spacer ring between middle packing element and the end packing element, be equipped with corrosion-resistant metal net and spring skeleton in the end packing element, spring skeleton sets up the one side of keeping away from middle packing element. The sealing assembly can plug irregular gaps between a pipe column and an open hole well wall piece in all pound-level casings in the same specification.
Description
Technical Field
The utility model belongs to the technical field of oil gas field equipment, especially, relate to a compression spring MESH (net) packer seal assembly.
Background
In recent years, with the continuous improvement of exploration and development technologies, downhole operation tools are required to be used for not only plugging the annular space between a pipe column and a casing, which is larger and larger, but also plugging the annular space between the pipe column and an open hole for the purpose of achieving various operations.
The sealing component is an important component of the downhole tool, and the temperature resistance, pressure resistance and corrosion resistance of the sealing component directly influence the use effect, service life and the like of the downhole tool. When the sealing assembly works in a corrosive high-temperature underground environment, high pressure difference needs to be borne, the shoulder part of the sealing assembly is easy to extrude and damage by the high pressure difference, and sealing failure is caused, so that the pressure difference of an underground tool is low, and the service life of the underground tool is shortened. Along with the application of the open hole downhole tool, the sealing assembly not only can plug a larger annular gap between the pipe column and the casing pipe, but also can plug an irregular gap between the pipe column and the open hole well wall. Existing seal assemblies are not suitable for use in all pound-scale casings of the same specification due to technical limitations. This presents difficulties in the design, production, use, etc. of downhole tools. In summary, the conventional sealing assembly for downhole tools is difficult to satisfy the above requirements, and therefore a reliable sealing assembly is needed to ensure the normal use of downhole tools.
Disclosure of Invention
In order to overcome the weak point of above-mentioned prior art, the utility model provides a compression spring MESH packer seal assembly, this seal assembly can realize in the same specification all pound level sleeve pipes, can shutoff tubular column and the irregular space of bore hole wall spare.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a compression spring MESH packer seal assembly, includes middle packing element, end packing element and metal spacer ring, middle packing element is the easy compression packing element that macromolecular material made, and the both sides of this middle packing element are equipped with an end packing element respectively, and middle packing element and end are separated through the metal spacer ring between the packing element, be equipped with corrosion-resistant metal net and spring skeleton in the end packing element, spring skeleton sets up the one side of keeping away from middle packing element.
In the above technical scheme, two symmetrical grooves are arranged on the inner wall of the middle rubber cylinder.
In the above technical scheme, the cross section of the groove is similar to a trapezoid structure with a large outer part and a small inner part.
In the technical scheme, the bonding part of the metal grid on the end rubber cylinder and the rubber material is an inclined surface.
In the above technical scheme, the inner hole at the outward side of the end rubber cylinder is provided with a chamfer.
In the above technical scheme, the middle rubber cylinder and the end rubber cylinder are made of nitrile rubber, hydrogenated nitrile rubber, fluororubber,
At least one of FFKM.
The utility model has the advantages that:
1. the MESH end rubber sleeve with certain elasticity is adopted, the spring is continuously expanded after being compressed, so that not only can an annular space between a pipe column and a sleeve be blocked, but also an irregular gap between the pipe column and the wall of a barefoot well can be blocked, and a layer of metal grid is added for filling, so that the problem that a body of the end rubber sleeve is extruded from a spring gap after the spring is expanded can be effectively solved;
2. the sealing component is made of high-temperature-resistant and corrosion-resistant high-strength polymer materials, can bear pressure up to 10K Psi at 212 DEG F, and can resist corrosion of hydrogen sulfide;
3. the MESH end rubber sleeve with certain elasticity and the middle rubber sleeve which is easy to compress and deform are adopted, so that the sealing assembly is easy to compress, the sealing effect is good, and the service life is long;
4. the seal assembly may be used in casings of the same gauge in different pound levels.
Drawings
Fig. 1 is a schematic sectional view of the present invention.
Wherein: 1. the spring comprises a spring framework, 2 metal grids, 3 a high polymer material body, 4 spacer rings, 5 a middle rubber cylinder, 6 grooves and 7 chamfers.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a compression spring MESH packer sealing assembly comprises a middle rubber sleeve 5, an end rubber sleeve 3 and a metal spacer ring 4, wherein the middle rubber sleeve 5 is an easily-compressed rubber sleeve made of a high polymer material, the two sides of the middle rubber sleeve 5 are respectively provided with the end rubber sleeve 3, the middle rubber sleeve 5 and the end rubber sleeve 3 are separated by the metal spacer ring 4, a corrosion-resistant metal grid 2 and a spring skeleton 1 are arranged in the end rubber sleeve 3, and the spring skeleton 1 is arranged on one side far away from the middle rubber sleeve 5. Adopt the spring MESH end packing element that has certain elasticity, the spring constantly struts after the compression not only can shutoff tubular column and the annular space between the sleeve pipe to can shutoff tubular column and the irregular space between the open hole well wall, increase the one deck metal MESH and fill and can effectively prevent the spring and strut the back, the problem that the body of end packing element extrudes from the spring gap, adopt the middle packing element that has certain elastic spring MESH end packing element and easy compression deformation, seal assembly easily compresses, and sealed effectual, long service life.
In the above technical scheme, two symmetrical grooves 6 are arranged on the inner wall of the middle rubber cylinder 5. The two grooves 6 facilitate the compression of the middle rubber cylinder 5.
In the above technical solution, the cross section of the groove 6 is approximately a trapezoid structure with a large outside and a small inside. The groove 6 with the structure is more beneficial to the compression and sealing of the middle rubber cylinder.
In the technical scheme, the bonding part of the metal grid 2 on the end rubber cylinder 3 and the rubber material is an inclined surface. The surface of metal net 2 and sizing material bonding department has the contained angle with the horizontal plane, and spring skeleton 1 uses special bonding agent bonding confession to vulcanize and forms, and the junction of metal net 2 and the body of end packing element is the inclined plane, the better parcel spring skeleton 1 of ability to it is more firm to make metal net 2 and end packing element body combine.
In the above technical scheme, the inner hole of the outward side of the end rubber cylinder 3 is provided with a chamfer 7. The chamfer 7 facilitates the pipe column to pass through when in use.
In the above technical scheme, the middle rubber cylinder 5 and the end rubber cylinder 3 are made of nitrile rubber, hydrogenated nitrile rubber, fluororubber,
At least one of FFKM.
The end rubber cylinder 3 is formed by high-temperature and high-pressure curing of a high polymer material, the spring framework 1 and the end rubber cylinder body are respectively dip-coated with an adhesive before curing, and the bonding strength of the end rubber cylinder and the high polymer material after curing is guaranteed. The middle rubber cylinder 5 is directly formed by injecting high polymer materials into a mould and curing at high temperature and high pressure.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (6)
1. The utility model provides a compression spring MESH packer seal assembly which characterized by: the middle rubber tube is an easily-compressed rubber tube made of high polymer materials, two sides of the middle rubber tube are respectively provided with one end rubber tube, the middle rubber tube and the end rubber tube are separated through the metal spacer ring, a corrosion-resistant metal grid and a spring framework are arranged in the end rubber tube, and the spring framework is arranged on one side far away from the middle rubber tube.
2. The compression spring MESH packer seal assembly of claim 1, wherein: and two symmetrical grooves are formed in the inner wall of the middle rubber cylinder.
3. The compression spring MESH packer seal assembly of claim 2, wherein: the cross section of the groove is similar to a trapezoidal structure with a large outer part and a small inner part.
4. The compression spring MESH packer seal assembly of claim 1, wherein: the bonding part of the metal grid on the end rubber cylinder and the rubber material is an inclined plane.
5. The compression spring MESH packer seal assembly of claim 1, wherein: and an inner hole at one outward side of the end rubber cylinder is provided with a chamfer.
6. The compression spring MESH packer seal assembly of claim 1, wherein: the middle rubber cylinder and the end rubber cylinder are made of nitrile rubber, hydrogenated nitrile rubber, fluororubber,
At least one of FFKM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120277471.2U CN214886973U (en) | 2021-01-29 | 2021-01-29 | Compression spring MESH packer seal assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120277471.2U CN214886973U (en) | 2021-01-29 | 2021-01-29 | Compression spring MESH packer seal assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214886973U true CN214886973U (en) | 2021-11-26 |
Family
ID=78860592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120277471.2U Active CN214886973U (en) | 2021-01-29 | 2021-01-29 | Compression spring MESH packer seal assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214886973U (en) |
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2021
- 2021-01-29 CN CN202120277471.2U patent/CN214886973U/en active Active
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