Anti-falling packer rubber sleeve

Abstract

The utility model relates to the technical field of packer rubber barrels, and discloses an anti-falling packer rubber barrel which comprises a center pipe, an upper connector is installed on the left side of the exterior of the center pipe, a lower connector is installed on the right side of the exterior of the center pipe, and a sealing rubber barrel body is installed on the right side of the exterior of the upper connector. Anti-falling assemblies are arranged on the two sides of the exterior of the sealing rubber barrel body, and a protection assembly is arranged in the sealing rubber barrel body; the anti-falling assembly comprises first arc-shaped hoops, the first arc-shaped hoops are arranged on the two sides of the upper portion of the sealing rubber barrel body, second arc-shaped hoops are arranged on the two sides of the lower portion of the sealing rubber barrel body, and bolts are connected to the peripheries of the interiors of the first arc-shaped hoops and the second arc-shaped hoops in a threaded mode. According to the rubber sleeve fixing device, after the rubber sleeve is installed, the rubber sleeve can be fixed through the first arc-shaped clamp and the second arc-shaped clamp, the problem that the rubber sleeve falls off in the using process is avoided, and the service life of the rubber sleeve is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to packer rubber joint technical field especially relates to a kind of anti-falling packer rubber joint. BACKGROUND

[0002] Packer is a downhole tool for oil and gas well operation, the main role is to isolate the fluid between different intervals in oil well, so as to realize separate layer development, testing, water injection, fracturing and other operations, it is the key equipment in oil and gas field operation.

[0003] Packer is usually composed of upper sub, center tube, sealing rubber joint, floating head and lower sub, when installing sealing rubber joint, it is sleeved in the middle of center tube, and sealing is formed by expansion and contact with well wall, although this kind of mode can complete the installation of sealing rubber joint, but lack the fixing structure of sealing rubber joint, under the operation of high-pressure fluid scouring, vibration or axial load of pipe column, make sealing rubber joint slip or fall along center tube, thereby reduce the service life of packer. UTILITY MODEL CONTENT

[0004] In order to make up for the above shortcomings, the utility model provides a kind of anti-falling packer rubber joint, to improve the fixing structure of sealing rubber joint in prior art, under the operation of high-pressure fluid scouring, vibration or axial load of pipe column, make sealing rubber joint slip or fall along center tube.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of anti-falling packer rubber joint, including center tube, the upper sub is installed on the left side of the outer portion of center tube, the lower sub is installed on the right side of the outer portion of center tube, the sealing rubber joint body is installed on the right side of the outer portion of upper sub, the anti-falling assembly is arranged on the both sides of the outer portion of sealing rubber joint body, the protection assembly is arranged in the inner portion of sealing rubber joint body;

[0007] Anti-falling assembly includes arc clamp one, the arc clamp one is arranged on the both sides of the upper portion of sealing rubber joint body, arc clamp two is arranged on the both sides of the lower portion of sealing rubber joint body, the bolt is threadedly connected around the inner portion of arc clamp one and arc clamp two, the nut is arranged around the lower portion of arc clamp two, the bolt is threadedly connected with the nut.

[0008] Further, the protection layer is arranged in the inner portion of sealing rubber joint body, the protective layer is arranged on the outer portion of sealing rubber joint body, the wear-resistant layer is arranged on the outer portion of protective layer.

[0009] Further, the installation hole is formed around the inner portion of arc clamp two, the bolt is slidably connected in the inner portion of installation hole.

[0010] Further, the material of the protective layer is nitrile rubber material, the material of the protective layer is aramid fiber material, and the material of the wear-resistant layer is polyurethane material.

[0011] Further, the lower joint is externally provided with a floating head on the left side.

[0012] Further, the material of the sealing rubber tube body is fluorine rubber material.

[0013] Further, the materials of the arc-shaped clamps one and two are stainless steel materials.

[0014] The utility model has the advantages of the following beneficial effects:

[0015] 1. In the utility model, when the sealing rubber tube body is installed, the arc-shaped clamp one is clamped on both sides of the upper part of the rubber tube body, the arc-shaped clamp two is clamped on both sides of the lower part, the two clamps are overlapped, then the bolt is inserted into the inside of the clamp, and the nut is tightened, so that the fixing of the rubber tube is completed.

[0016] 2. In the utility model, the protective layer is made of nitrile rubber material, the high-temperature resistance is improved, and the performance of the rubber tube is prevented from degrading; the protective layer is made of aramid fiber material, the tensile strength is enhanced, and deformation or tearing is prevented; the wear-resistant layer is made of polyurethane material, friction and wear are reduced, and the three-layer structure effectively resists wear, corrosion, tearing and pressure damage, thereby prolonging the service life of the rubber tube. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A perspective view of the anti-falling packer rubber tube is provided for the utility model;

[0018] Figure 2 A split structure schematic view of the arc-shaped clamp one of the anti-falling packer rubber tube is provided for the utility model;

[0019] Figure 3 A split structure schematic view of the arc-shaped clamp two of the anti-falling packer rubber tube is provided for the utility model;

[0020] Figure 4 A sealing rubber tube body internal structure schematic view of the anti-falling packer rubber tube is provided for the utility model.

[0021] LEGEND:

[0022] 1, center tube; 2, upper joint; 3, floating head; 4, lower joint; 5, sealing rubber tube body; 6, arc clamp one; 7, arc clamp two; 8, bolt; 9, mounting hole; 10, nut; 11, protective layer; 12, protective layer; 13, wear-resistant layer. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0024] Referring to Figure 1 , Figure 2 and Figure 3 , the utility model provides an embodiment: a kind of anti-falling packer rubber tube, including center tube 1, for supporting the whole rubber tube structure, and as the passage of medium flow, center tube 1 outer left side is equipped with upper joint 2, for connecting well equipment or the upper structure of packer, center tube 1 outer right side is equipped with lower joint 4, for connecting downhole equipment or the lower structure of packer, upper joint 2 outer right side is equipped with sealing rubber tube body 5, mainly responsible for the sealing of downhole medium, sealing rubber tube body 5 outer both sides are provided with anti-falling assembly, by setting anti-falling assembly, the problem that sealing rubber tube body 5 appears in use process can be avoided to fall off, sealing rubber tube body 5 inside is provided with protective assembly, by setting protective assembly, the service life of sealing rubber tube body 5 can be extended, lower joint 4 outer left side is equipped with floating head 3, floating head 3 can self-adaptingly adjust the compression force of rubber tube, the material of sealing rubber tube body 5 is fluorine rubber material, fluorine rubber has good compression resilience and sealing property, even in high pressure or temperature fluctuation larger environment, still can maintain stable sealing effect;

[0025] Anti-falling assembly includes arc clamp one 6, arc clamp one 6 is arranged on sealing rubber tube body 5 upper both sides, arc clamp two 7 is arranged on sealing rubber tube body 5 lower both sides, bolt 8 is threadedly connected around the inside of arc clamp one 6 and arc clamp two 7, nut 10 is arranged around the lower part of arc clamp two 7, a plurality of bolts 8 are threadedly connected with a plurality of nuts 10, mounting hole 9 is formed around the inside of arc clamp two 7, a plurality of bolts 8 are slidably connected in a plurality of mounting holes 9, by setting mounting hole 9, the installation of bolt 8 is facilitated, the material of arc clamp one 6 and arc clamp two 7 is stainless steel material, stainless steel material has high strength and rigidity, can withstand downhole high pressure, high load and dynamic stress conditions, to ensure that the clamp will not be deformed due to stress, thereby avoiding sealing failure or rubber tube falling off.

[0026] Specifically, in the installation of the sealing rubber sleeve body 5, first, the sealing rubber sleeve body 5 is passed through the central pipe 1, and is ensured to be sleeved at the predetermined installation position, the arc-shaped clamp one 6 is clamped at the upper two sides of the sealing rubber sleeve body 5, and the inner side of the arc-shaped clamp is ensured to be tightly attached to the rubber sleeve body 5, then, the arc-shaped clamp two 7 is clamped at the lower two sides of the sealing rubber sleeve body 5, and is kept in alignment with the arc-shaped clamp one 6, then, the bolt 8 is sequentially inserted into the installation hole 9 of the arc-shaped clamp one 6 and the arc-shaped clamp two 7, and the bolt 8 is ensured to penetrate the clamp and keep vertical with the central pipe 1, after confirming that the position of the bolt 8 is correct, the nut 10 is screwed on the outside of the bolt 8, and the clamping force is gradually increased by tightening the nut 10, through the above installation process, the sealing rubber sleeve body 5 is firmly fixed outside the central pipe 1, and through the interaction of the arc-shaped clamp one 6 and the arc-shaped clamp two 7, the displacement, loosening or falling off of the sealing rubber sleeve body caused by vibration, pressure or medium impact during use is effectively avoided, and the service life of the rubber sleeve is improved.

[0027] Referring to Figure 4 , the sealing rubber sleeve body 5 is internally provided with a protective layer 11, the sealing rubber sleeve body 5 is externally provided with a protective layer 12, and the protective layer 12 is externally provided with a wear-resistant layer 13, the material of the protective layer 11 is nitrile rubber material, the material of the protective layer 12 is aramid fiber material, and the material of the wear-resistant layer 13 is polyurethane material.

[0028] Specifically, by setting the protective layer 11 to be nitrile rubber material, the rubber sleeve can have excellent high temperature resistance, nitrile rubber has good oil resistance and high temperature resistance, and can effectively prevent the rubber sleeve from failing due to material aging or performance degradation in extreme temperature environment downhole (such as high temperature and high pressure well conditions), by setting the protective layer 12 to be aramid fiber material, the tensile strength and structural stability of the rubber sleeve are further enhanced, aramid fiber is known for its high strength and high modulus, and can withstand strong tensile force in high pressure environment, preventing the rubber sleeve from deforming, tearing or even breaking due to excessive expansion or external impact force during operation, by setting the wear-resistant layer 13 to be polyurethane material, the wear resistance of the rubber sleeve is further improved, polyurethane is a material with excellent wear resistance and impact resistance, which can significantly reduce the wear of the rubber sleeve caused by friction, fluid scouring and particulate matter (such as downhole sand particles, solid particles, etc.) during long-term use, and the overall performance of the rubber sleeve is effectively improved through the synergistic effect of the protective layer 11, the protective layer 12 and the wear-resistant layer 13.

[0029] Working principle: when installing the sealant cartridge body 5, first, the sealant cartridge body 5 is passed through the center tube 1 and is sleeved in the installation position, then the arc-shaped clamp one 6 is clamped on both sides of the upper part of the sealant cartridge body 5, then the arc-shaped clamp two 7 is clamped on both sides of the lower part of the sealant cartridge body 5, the arc-shaped clamp one 6 and the arc-shaped clamp two 7 are overlapped, then the bolt 8 is inserted into the inside of the arc-shaped clamp one 6 and the arc-shaped clamp two 7, then the nut 10 is screwed on the outside of the bolt 8, the fixing of the sealant cartridge body 5 is completed, the sealant cartridge can be fixed through the arc-shaped clamp one 6 and the arc-shaped clamp two 7 after the installation of the sealant cartridge is completed, the problem of falling off of the sealant cartridge in the use process is avoided, and the service life of the sealant cartridge is improved.

[0030] By setting the protective layer 11 to be made of nitrile rubber material, the high temperature resistance characteristic is achieved, the performance degradation of the sealant cartridge in the extreme temperature environment is prevented, the normal function is ensured, by setting the protective layer 12 to be made of aramid fiber material, the tensile strength of the sealant cartridge can be significantly enhanced, the deformation or tearing under high pressure or dynamic load is prevented, the structural stability is improved, by setting the wear-resistant layer 13 to be made of polyurethane material, which is a material with excellent wear resistance, the wear of the sealant cartridge due to friction in the use process can be effectively reduced, thereby prolonging the service life of the sealant cartridge, through the setting of the protective layer 11, the protective layer 12 and the wear-resistant layer 13, the wear, corrosion, tearing and pressure damage can be better resisted, and the service life of the sealant cartridge is prolonged.

[0031] Finally, it should be noted that: the above only describes preferred embodiments of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A packer sleeve for preventing detachment, comprising a central tube (1), characterized in that: An upper connector (2) is installed on the left side of the outside of the central tube (1), a lower connector (4) is installed on the right side of the outside of the central tube (1), a sealing tube body (5) is installed on the right side of the outside of the upper connector (2), anti-drop components are provided on both sides of the outside of the sealing tube body (5), and a protective component is provided inside the sealing tube body (5). The anti-detachment component includes an arc-shaped clamp one (6), which is located on both sides of the upper part of the sealing rubber cylinder body (5). Arc-shaped clamp two (7) is located on both sides of the lower part of the sealing rubber cylinder body (5). Bolts (8) are threaded around the inside of the arc-shaped clamp one (6) and the arc-shaped clamp two (7). Nuts (10) are located around the lower part of the arc-shaped clamp two (7). The multiple bolts (8) and the multiple nuts (10) are threadedly connected.

2. The anti-detachment packer rubber sleeve according to claim 1, characterized in that: The sealing tube body (5) has a protective layer (11) inside, a protective layer (12) outside, and a wear-resistant layer (13) outside.

3. The anti-detachment packer sleeve according to claim 1, characterized in that: The arc-shaped clamp (7) has mounting holes (9) on all four sides inside, and multiple bolts (8) are slidably connected inside the multiple mounting holes (9).

4. The anti-detachment packer sleeve according to claim 2, characterized in that: The protective layer (11) is made of nitrile rubber, the protective layer (12) is made of aramid fiber, and the wear-resistant layer (13) is made of polyurethane.

5. The anti-detachment packer sleeve according to claim 1, characterized in that: A floating head (3) is installed on the left side of the lower connector (4).

6. The anti-detachment packer rubber sleeve according to claim 1, characterized in that: The sealing tube body (5) is made of fluororubber.

7. The anti-detachment packer rubber sleeve according to claim 1, characterized in that: Both the first arc-shaped clamp (6) and the second arc-shaped clamp (7) are made of stainless steel.

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