CN207701106U - A kind of compression fission MESH packer sealing components - Google Patents

Abstract

The utility model discloses a kind of compression fission MESH packer sealing components, including intermediate packing element and end packing element, the intermediate packing element is compressible packing element made of high molecular material, and corrosion resistant metal grill is equipped in packing element, the both ends of intermediate packing element are respectively equipped with an end packing element, end packing element is made of high molecular material, including seperated molding ontology and fission, the ontology with it is seperated in be equipped with corrosion resistant metal grill, and ontology is different from the metal grill angle in fission, it is seperated that chamfering is equipped at outer end.

Description

A compression type split MESH packer sealing assembly

technical field

The utility model belongs to the technical field of oil and gas field equipment, in particular to a sealing assembly of a compressed split MESH (grid) packer.

Background technique

In recent years, with the continuous improvement of exploration and development technology, in order to achieve a variety of operational purposes, downhole operating tools must not only plug the increasingly large annular space between the pipe string and the casing, but also be able to be used for plugging The annular space between the pipe string and the open hole.

As an important part of the downhole tool, the sealing component has a direct impact on the use effect and service life of the downhole tool due to its temperature resistance, pressure resistance and corrosion resistance. When the sealing assembly works in a corrosive high-temperature downhole environment, it needs to withstand high pressure difference. The shoulder of the sealing assembly is easily squeezed out and damaged by the high pressure difference, resulting in seal failure, resulting in low pressure difference resistance and shortened service life of the downhole tool. With the application of open hole downhole tools, the sealing assembly must not only be able to seal the large annular gap between the pipe string and the casing, but also be able to seal the irregular gap between the pipe string and the open hole wall. Due to technical limitations, the existing sealing components cannot be applied to all pound-level bushings of the same specification. This brings many difficulties to the design, production and use of downhole tools. To sum up, it is difficult for existing conventional downhole tool sealing components to meet the requirements of the above working conditions. Therefore, a reliable sealing component is urgently needed to ensure the normal use of downhole tools.

Contents of the invention

In order to overcome the shortcomings of the above-mentioned prior art, the utility model provides a sealing assembly of a compression type split MESH packer. Irregular voids in well wall parts.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a sealing assembly of a compressed split MESH packer, including an intermediate rubber sleeve and an end rubber sleeve, and the intermediate rubber sleeve is an easy-to-compress rubber made of a polymer material The rubber tube is equipped with a corrosion-resistant metal grid, and the two ends of the middle rubber tube are respectively equipped with an end rubber tube. The end rubber tube is made of polymer materials, including a split body and a split body. Both the main body and the split body are equipped with corrosion-resistant metal grids, and the angles of the metal grids in the main body and the split body are different, and the split body is provided with chamfers near the outer end.

In the above technical solution, a groove is provided in the middle of the inner wall of the intermediate rubber cylinder.

In the above technical solution, the cross section of the groove is a trapezoid with a large outside and a small inside.

In the above technical solution, the contact surface of the intermediate rubber cylinder and the end rubber cylinder is a slope.

In the above technical scheme, the polymer material used in the middle rubber cylinder and the end rubber cylinder is nitrile rubber, hydrogenated nitrile rubber, fluororubber, At least one of FFKM and PTFE.

The beneficial effects of the utility model are:

1. The MESH end rubber cartridge with certain elasticity can not only seal the annular space between the pipe string and the casing, but also seal the irregular gap between the pipe string and the open hole wall;

2. The sealing component is made of high-temperature and corrosion-resistant high-strength polymer materials, which can withstand pressure up to 10K Psi at 212℉, and can resist hydrogen sulfide corrosion;

3. The MESH end rubber sleeve with certain elasticity and the intermediate rubber sleeve that is easy to compress and deform are adopted, the sealing component is easy to compress, and the sealing effect is good, and the service life is long;

4. The utility model can be used in casings with the same specification and different pound classes.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of the utility model.

Among them: 1. Intermediate rubber tube, 2. Metal grid, 3. Body, 4. Split, 5. Chamfer, 6. Groove.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.

A compression type split MESH packer sealing assembly as shown in Fig. 1 includes an intermediate rubber cylinder 1 and an end rubber cylinder, the intermediate rubber cylinder 1 is an easily compressible rubber cylinder made of polymer material, and the rubber cylinder Corrosion-resistant metal grid 2 is provided, and the two ends of the middle rubber tube 1 are respectively provided with an end rubber tube, the end rubber tube is made of polymer material, including a split body 3 and a split body 4, the body Both body 3 and split body 4 are provided with corrosion-resistant metal grid 2, and the angles of metal grid 2 in body 3 and split body 4 are different, and split body 4 is provided with a chamfer 5 near the outer end.

In the above technical solution, a groove 6 is provided in the middle of the inner wall of the intermediate rubber cylinder 1 .

In the above technical solution, the cross section of the groove 6 is a trapezoid with a large outside and a small inside.

In the above technical solution, the contact surface between the middle rubber cylinder 1 and the end rubber cylinder is an inclined surface.

In the above technical solution, the polymer material used in the middle rubber cylinder 1 and the end rubber cylinder is nitrile rubber, hydrogenated nitrile rubber, fluorine rubber, At least one of FFKM and PTFE.

The cross-pound class means that the utility model can be used in various bushings with the same specification but different pound classes.

The body 3 and split body 4 of the end rubber barrel are formed by high-temperature and high-pressure curing of the polymer material. Before curing, the body 3 part is dip-coated with adhesive to ensure the bonding strength with the polymer material after curing. The intermediate rubber cylinder is directly injected into the mold by polymer material and cured by high temperature and high pressure.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any person familiar with the technical field can easily think of All changes or replacements should fall within the protection scope of the present utility model.

Claims (5)

1. a kind of compression fission MESH packer sealing components, it is characterized in that：Including intermediate packing element and end packing element, the centre Packing element is compressible packing element made of high molecular material, and corrosion resistant metal grill is equipped in packing element, the two of intermediate packing element End is respectively equipped with an end packing element, and end packing element is made of high molecular material, including seperated molding ontology and fission, the ontology With it is seperated in be equipped with corrosion resistant metal grill, and ontology and the metal grill angle in fission are different, seperated close outer end Place is equipped with chamfering.

2. compression fission MESH packer sealing components according to claim 1, it is characterized in that：The intermediate packing element Inner wall middle is equipped with one of groove.

3. compression fission MESH packer sealing components according to claim 2, it is characterized in that：The section of the groove For small trapezoidal of outer imperial palace.

4. compression fission MESH packer sealing components according to claim 1, it is characterized in that：The intermediate packing element and It is inclined-plane to hold the contact surface of packing element.

5. compression fission MESH packer sealing components according to claim 1, it is characterized in that：The intermediate packing element and The high molecular material that uses of end packing element for nitrile rubber, hydrogenated nitrile-butadiene rubber, fluorubber,In FFKM, PTFE extremely Few one kind.