Packer capable of preventing packer rubber sleeve from being damaged

Abstract

The utility model relates to a packer capable of preventing a rubber sleeve from being damaged, which belongs to the technical field of packers and comprises a connecting pipe, the rubber sleeve is sleeved on the outer surface of the connecting pipe, and an upper packing pipe and a lower packing pipe are respectively arranged on the outer surface of the connecting pipe and positioned on the upper side and the lower side of the rubber sleeve. The outer surface of the rubber sleeve is sleeved with a protection mechanism located between the upper packing pipe and the lower packing pipe. According to the packer capable of preventing the rubber sleeve from being damaged, firstly, the packer is connected with the outside through the connecting pipe and the external transmission structure and conveyed to a position needing to work, after operation is started, pressure is applied to the rubber sleeve, the rubber sleeve deforms due to the pressure, the shape of the rubber sleeve is changed, the rubber sleeve is in contact with a protection mechanism due to deformation of the rubber sleeve, the pressure continues to act, and the rubber sleeve is prevented from being damaged. When the valve is opened, the protection mechanism starts to expand, the protection mechanism continuously expands and finally is tightly attached to the inner wall formed in the channel, a sealing process is completed through the action, and stability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to packer technical field, concretely is a kind of packer for preventing packer rubber cylinder breakage. BACKGROUND

[0002] Packer refers to be connected on the downhole string, for sealing the annular space of oil tube and oil and gas well casing or open hole wall, when needing to seal the annular space of oil tube and oil and gas well casing or open hole wall, connect packer on the downhole string, reach design depth after being down, and packer is expanded by the way such as hydraulic drive to make the sealing member on packer, and the annulus of oil tube is sealed.

[0003] For example, a packer is disclosed in Chinese patent (publication number: CN214464053U), which comprises an upper joint, an outer core tube, an inner core tube, a connecting head and a lower joint; the upper joint, the inner core tube, the connecting head and the lower joint jointly form a long straight channel with both ends communicating with the outside; the upper joint is detachably connected with an outer core tube head at the bottom end, and the top end of the outer core tube is fixedly connected with the bottom end of the outer core tube head; the outer core tube is sleeved on the outer wall of the inner core tube, and a rubber cylinder and a sealing ring are sleeved on the outer wall of the outer core tube; the sealing ring is located at both ends of the rubber cylinder, respectively; the application has the effect of working more stably.

[0004] The above-mentioned patent has the effect of working more stably by the above-mentioned arrangement, but lacks protection for the rubber cylinder, and once the rubber cylinder is damaged, the sealing effect of the packer will be reduced, which may cause greater danger, so a packer for preventing packer rubber cylinder breakage is proposed to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a packer for preventing packer rubber cylinder breakage, which has the advantages of protecting the rubber cylinder and solves the problem of reducing the use effect of the packer due to the breakage of the rubber cylinder.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a packer for preventing packer rubber cylinder breakage, comprising a connecting pipe, an outer surface of the connecting pipe is sleeved with a rubber cylinder, and the outer surface of the connecting pipe and the upper and lower sides of the rubber cylinder are respectively provided with an upper packer pipe and a lower packer pipe; a protection mechanism is sleeved on the outer surface of the rubber cylinder between the upper packer pipe and the lower packer pipe.

[0007] The protection mechanism comprises an elastic protective sleeve fixedly connected with the outer surface of the rubber cylinder between the upper packer pipe and the lower packer pipe, the inner wall of the elastic protective sleeve is provided with a plurality of groups of pressure reduction components in annular array, the side of each group of pressure reduction components away from the elastic protective sleeve is provided with an elastic ring, the inner wall of the elastic ring is attached with a tensile ring, and the inner wall of the tensile ring is provided with a plurality of groups of pressure relief components in annular array.

[0008] Preferably, each of the decompression assemblies comprises a base, a stable box, an air bag and a support rod, the base is fixed to the inner wall of the elastic protective sleeve, the stable box is hingedly connected to the side of the base away from the elastic protective sleeve through a shaft, the air bag is fixed in the inner cavity of the stable box, and the support rod is fixed to the side of the air bag away from the base and hingedly connected to the telescopic ring through a shaft.

[0009] Preferably, the telescopic ring comprises a plurality of main rods, a plurality of connecting rods and two fixed blocks, the center of each main rod is hingedly connected to the support rod, the two sides of each main rod are fixedly connected to the fixed blocks, the connecting rods are hingedly connected between the adjacent fixed blocks, and the main rods and the connecting rods are rubber hoses.

[0010] Each of the pressure relief assemblies comprises two springs, a support plate and a stable block, the two springs are fixed to the inner wall of the tensile ring, the two springs are fixedly connected to the same support plate at the side away from the tensile ring, and the stable block is fixed to the side of the support plate close to the rubber tube.

[0011] Preferably, the air bag is oval, the stable box is provided with through holes at the opposite sides for the air bag to deform when compressed, and the side of the stable box close to the telescopic ring is provided with a perforation for the support rod to extend and retract.

[0012] Preferably, the tensile ring is a silica gel telescopic ring, and the inner wall of the tensile ring is fixedly connected to a sponge layer.

[0013] Compared with the prior art, the technical scheme has the following beneficial effects:

[0014] The packer for preventing the rubber tube from being damaged is connected with the connecting pipe and the external transmission structure, is transported to a designated position to start operation, generates pressure on the rubber tube under the action force, causes the rubber tube to deform, contacts the protection mechanism to expand, finally, the protection mechanism is tightly attached to the inner wall of the channel, realizes the purpose of good sealing stability, and further improves the protection effect on the rubber tube. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a three-dimensional structure schematic view of the utility model;

[0016] Fig. 2 It is a partial sectional view of the utility model;

[0017] Fig. 3 It is a top view of the protection mechanism of the utility model;

[0018] Fig. 4 It is a connection structure diagram of the pressure relief assembly of the utility model.

[0019] In the figure: 1 upper packer, 2 lower packer, 3 protection mechanism, 31 elastic protection sleeve, 32 pressure relief assembly, 321 base, 322 stabilizing box, 323 air bag, 324 support rod, 33 telescopic ring, 331 main rod, 332 connecting rod, 333 fixed block, 34 tensile ring, 35 pressure relief assembly, 351 spring, 352 support plate, 353 stabilizing block, 4 connecting pipe, 5 rubber tube. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] Please refer to Figs. 1-2 In the embodiment, the packer for preventing the rubber tube of the packer from being damaged comprises a connecting pipe 4, the outer surface of the connecting pipe 4 is sleeved with a rubber tube 5, the outer surface of the connecting pipe 4 and located on the upper and lower sides of the rubber tube 5 are respectively provided with an upper packer 1 and a lower packer 2, and the outer surface of the rubber tube 5 is sleeved with a protection mechanism 3 located between the upper packer 1 and the lower packer 2.

[0022] In the embodiment, first, the connecting pipe 4 is connected to a designated place through an external transmission structure, and under the action of force, the rubber tube 5 is compressed to deform, when the rubber tube 5 deforms, the protection mechanism 3 is contacted to expand, finally, the protection mechanism 3 is tightly attached to the inner wall of the channel, so that the purpose of good sealing stability is achieved, thereby further improving the protection effect of the rubber tube 5.

[0023] Please refer to Figs. 3-4 In order to improve the protection effect of the rubber tube 5, the protection mechanism 3 in the embodiment comprises an elastic protection sleeve 31 fixedly connected to the outer surface of the rubber tube 5 and located between the upper packer 1 and the lower packer 2, the inner wall of the elastic protection sleeve 31 is provided with a plurality of groups of pressure relief assemblies 32 arranged in an annular array, each group of pressure relief assemblies 32 is composed of a base 321, a stabilizing box 322, an air bag 323 and a support rod 324, the base 321 is fixed to the inner wall of the elastic protection sleeve 31, the stabilizing box 322 is hingedly connected to the side of the base 321 away from the elastic protection sleeve 31 through a shaft, the air bag 323 is fixed in the inner cavity of the stabilizing box 322, the air bag 323 is elliptical, and the opposite sides of the stabilizing box 322 are provided with through holes for the air bag 323 to deform when compressed, so that the air bag 323 can freely stretch and contract when deformed without being limited by the stabilizing box 322.

[0024] Further, the air bag 323 is fixed with a support rod 324 at one end penetrating to the outside of the stable box 322 and hinged with the telescopic ring 33 through a shaft, and the stable box 322 is provided with a perforation near the telescopic ring 33 for the telescopic support rod 324, so that when the rubber tube 5 is deformed, the telescopic ring 33 is stretched to compress the support rod 324, so that the elastic protective sleeve 31 is expanded to reduce the impact on the rubber tube 5, and the rubber tube 5 is better protected.

[0025] Each set of pressure relief assembly 32 is provided with a telescopic ring 33 away from the elastic protective sleeve 31, and the telescopic ring 33 is composed of a plurality of main rods 331, a plurality of connecting rods 332 and two fixed blocks 333. The center of the main rod 331 is hinged with the support rod 324, and the two sides of each main rod 331 are fixed with the fixed block 333. The connecting rod 332 is hinged between each adjacent fixed block 333. The main rod 331 and the connecting rod 332 are rubber hoses. When the rubber tube 5 is deformed, the telescopic ring 33 can adapt to different degrees of deformation, so that the telescopic ring 33 can flexibly protect the rubber tube 5, and at the same time, the activity range of the rubber tube 5 is not limited.

[0026] The inner wall of the telescopic ring 33 is attached with a tensile ring 34, which is a silica gel telescopic ring. The tensile ring 34 is tightly attached when it is telescoped. The inner wall of the tensile ring 34 is fixed with a sponge layer, which can effectively buffer the telescoping of the rubber tube 5. The inner wall of the tensile ring 34 is provided with a plurality of sets of pressure relief assemblies 35 arranged in a ring array. Each set of pressure relief assembly 35 is composed of two springs 351, a support plate 352 and a stable block 353. Each set of two springs 351 is fixed with the inner wall of the tensile ring 34. Each set of two springs 351 is fixed with the same support plate 352 away from the tensile ring 34. The stable block 353 is fixed on the side of the support plate 352 close to the rubber tube 5. Each spring 351 can independently buffer and adjust the pressure, so as to effectively alleviate the pressure impact of the rubber tube 5 during operation, achieve the purpose of protection, and prolong the service life of the rubber tube 5.

[0027] In the embodiment, the connecting pipe 4 is connected to the external transmission structure, and after the packer is sent to the designated location, the driving force deforms the rubber tube 5, drives the stable block 353 and the support plate 352, further drives the spring 351 to compress, and then expands the tensile ring 34, pushes the telescopic ring 33 to deform, makes the support rod 324 and the compressed air bag 323 telescopic, further expands the elastic protective sleeve 31, and finally tightly fits the inner wall of the channel to achieve the effect of sealing and stability, thereby effectively protecting the rubber tube 5.

[0028] The working principle of the above embodiment is as follows:

[0029] Firstly, the connecting pipe 4 is connected to the external transmission structure, the packer is delivered to the designated place through the opened channel, and then the packer is started, the rubber tube 5 is deformed by the acting force, the deformation makes the rubber tube 5 contact with the stabilizing block 353, thereby driving the supporting plate 352, making the two springs 351 compressed, further driving the tensile ring 34 expanded, promoting the telescopic ring 33 deformed, thereby causing the supporting rod 324 telescopic, making the air bag 323 compressed and deformed, and then transmitted to the base 321, promoting the elastic protective sleeve 31 expanded, finally making the elastic protective sleeve 31 closely contact with the inner wall of the channel, thereby realizing the purpose of good sealing stability, further improving the protection effect of the rubber tube 5.

[0030] It should be noted that, in this document, the terms such as first and second are used merely to distinguish one entity or action from another entity or action, and do not necessarily require or imply that these entities or actions have any such actual relationship or order. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0031] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model.

Claims

1. A packer for preventing damage to the packer sleeve, comprising a connecting pipe (4), wherein a sleeve (5) is fitted onto the outer surface of the connecting pipe (4), and an upper packer tube (1) and a lower packer tube (2) are respectively provided on the upper and lower sides of the outer surface of the connecting pipe (4) and the sleeve (5), characterized in that: The outer surface of the rubber tube (5) is fitted with a protective mechanism (3) located between the upper sealing tube (1) and the lower sealing tube (2); The protective mechanism (3) includes an elastic protective sleeve (31) fixedly connected to the outer surface of the rubber tube (5) and located between the upper sealing tube (1) and the lower sealing tube (2). The inner wall of the elastic protective sleeve (31) is provided with multiple sets of pressure-reducing components (32) arranged in a ring array. Each set of pressure-reducing components (32) is provided with a telescopic ring (33) on the side away from the elastic protective sleeve (31). The inner wall of the telescopic ring (33) is fitted with a tensile ring sleeve (34). The inner wall of the tensile ring sleeve (34) is provided with multiple sets of pressure-relieving components (35) arranged in a ring array.

2. The packer for preventing damage to the packer sleeve according to claim 1, characterized in that: Each pressure-reducing assembly (32) consists of a base (321), a stabilizing box (322), an airbag (323), and a support rod (324). The base (321) is fixed to the inner wall of the elastic protective sleeve (31). The stabilizing box (322) is hinged to the side of the base (321) away from the elastic protective sleeve (31) via a shaft. The airbag (323) is fixed in the inner cavity of the stabilizing box (322). A support rod (324) is fixed to the side of the airbag (323) away from the base (321), with one end extending through the outside of the stabilizing box (322) and hinged to the telescopic ring (33) via a shaft.

3. A packer for preventing damage to the packer sleeve according to claim 2, characterized in that: The telescopic ring (33) consists of multiple main rods (331), multiple connecting rods (332) and two fixing blocks (333). The center of the main rod (331) is hinged to the support rod (324). Each main rod (331) has a fixing block (333) fixed on both sides. Each adjacent fixing block (333) is hinged to a connecting rod (332). The main rod (331) and the connecting rod (332) are both rubber hoses.

4. A packer for preventing damage to the packer sleeve according to claim 1, characterized in that: Each pressure-relieving component (35) consists of two springs (351), a support plate (352), and a stabilizing block (353). The two springs (351) in each group are fixed to the inner wall of the tension ring (34). The same support plate (352) is fixed on the side of each pair of two springs (351) away from the tension ring (34). The stabilizing block (353) is fixed on the side of the support plate (352) close to the rubber tube (5).

5. A packer for preventing damage to the packer sleeve according to claim 2, characterized in that: The airbag (323) is elliptical. The stabilizing box (322) has through holes on opposite sides for the airbag (323) to deform when compressed. The stabilizing box (322) has a perforation on the side near the telescopic ring (33) for the extension and retraction of the support rod (324).

6. A packer for preventing damage to the packer sleeve according to claim 1, characterized in that: The elastic ring sleeve (34) is a silicone telescopic ring sleeve, and a sponge layer is fixed on the inner wall of the elastic ring sleeve (34).

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