Sliding sleeve type slip

Abstract

The invention relates to the technical field of oil and gas production equipment, slips are widely applied to oil and gas production in oil fields, and particularly relates to a sliding sleeve type slip which comprises a slip body, a sliding sleeve body and a cone body, the slip body is connected to the surface of the cone body in a sliding mode, and the sliding sleeve body is connected to the surface of the cone body in a sliding mode. The bottom of the sliding sleeve body is hinged to the top of the slip body. Through the arrangement of components such as the sliding filling mechanism and the tightening cleaning assembly, when the sliding sleeve body moves, a sliding block extrudes a sliding ring, the sliding ring further extrudes an extrusion ring to enable air to be compressed and enter an air bag through a one-way valve, and the air bag bulges to fill gaps of the slip body so as to prevent impurities from invading; the air in the air bag enters the cleaning ring through the one-way valve and is sprayed out through the centralized spray head to clean the matching surface, and meanwhile, the telescopic protection assembly prevents impurities from falling into the connecting gap, so that the effects of effectively avoiding movement blocking of the sliding sleeve body and guaranteeing smooth stretching and retracting of the slip insert are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil and gas production equipment, and more particularly to a sliding sleeve slip. BACKGROUND

[0002] The sliding sleeve slip is a downhole tool used for holding pipe strings in oil and gas production, drilling and well completion operations, and is used to control the pipe string. The core of the tool is the combination structure of the sliding sleeve body and the slip body. By sliding the sliding sleeve body relative to the slip body, the holding position can be adjusted or quickly set and released, and the pipe string such as the oil pipe and the casing can be stably fixed to ensure the safety and efficiency of the downhole operation.

[0003] When the traditional sliding sleeve slip performs the releasing operation downhole, the sliding fit surface between the sliding sleeve body and the slip body is easily invaded or adhered by impurities in the wellbore, such as drilling fluid solid particles, cuttings or downhole falling objects. This will cause the sliding sleeve body to be blocked, and the slip teeth cannot be completely and smoothly retracted to the initial position, which not only increases the difficulty of repeated setting, but also needs to be cleaned or repaired in severe cases, significantly reducing the operation efficiency, increasing the operation risk and use cost, and affecting the overall use effect and reliability of the sliding sleeve slip. SUMMARY

[0004] In view of the above shortcomings of the prior art, the present application provides a sliding sleeve slip, which can effectively solve the problem of the invasion of wellbore impurities causing the sliding sleeve to be blocked and the slip teeth to be unable to be smoothly retracted.

[0005] To achieve the above purpose, the present application is realized by the following technical scheme:

[0006] The present application provides a sliding sleeve slip, comprising a slip body, a sliding sleeve body and a vertebral body, the slip body is slidingly connected to the surface of the vertebral body, the sliding sleeve body is slidingly connected to the surface of the vertebral body, and the bottom of the sliding sleeve body is hingedly connected to the top of the slip body, the inner side of the sliding sleeve body is hingedly connected with a sliding filling mechanism, the sliding filling mechanism comprises a sliding block, the surface of the sliding block is slidingly connected with a sliding ring, the surface of the sliding ring is slidingly connected with an extrusion ring, and the extrusion ring is embedded and fixedly connected inside the vertebral body, the bottom of the extrusion ring is communicated with an air bag through a one-way valve, and the air bag is fixedly connected with the slip body, and the outer side of the slip body is fixedly connected with a telescopic protection assembly.

[0007] The top of the air bag is communicated with a tightening and cleaning assembly, the tightening and cleaning assembly comprises a one-way valve, the other end of the one-way valve is communicated with a cleaning ring through a pipeline, and the cleaning ring is fixedly connected to the surface of the sliding sleeve body, and the bottom of the cleaning ring is communicated with a plurality of groups of concentrated nozzles.

[0008] Further, the telescopic protection assembly comprises protection plates, a sliding groove is formed between the protection plates, a guide rod is slidably connected in the sliding groove, a stretching plate is fixedly connected between the protection plates, and the connecting gap between the protection plates is aligned with the concentrated nozzle.

[0009] Further, a stop ring is fixedly connected to the outer side of the sliding sleeve body, and the stop ring is located at the top of the connecting gap of the protection plates, and the inner side of the stop ring is inclined.

[0010] Further, a shunt plate is fixedly connected to the inner side of the stop ring, and a dispersing head is arranged at the top of the slip sleeve body and communicates with the concentrated nozzle at the top of the slip sleeve body.

[0011] Further, a support strip is fixedly connected to the outer side of the air bag, and the bottom of the support strip is fixedly connected to the bottom surface of the air bag.

[0012] Further, a support plate is fixedly connected to the bottom of the air bag, a sliding plate is hingedly connected to the outer side of the support plate, and the sliding plate is slidably connected with the slip sleeve body.

[0013] Further, a magnetic strip is fixedly connected to the bottom of the stretching plate, and the magnetic strip is magnetically connected with the outer side of the support strip.

[0014] Further, the outer side of the sliding ring is communicated with an air inlet ring through an air pressure valve, the outer side of the air inlet ring is fixedly connected with a half ring, the top of the half ring is communicated with a filter plate, and the half ring and the filter plate are fixedly connected with the sliding sleeve body.

[0015] Further, a compression ring is movably connected to the inner side of the cleaning ring, the top of the compression ring is fixedly connected with the vertebral body through a connecting rod, one side of the cleaning ring is communicated with an air inlet pipe through a one-way valve, the top of the cleaning ring is communicated with a cleaning nozzle, the air outlet end of the cleaning nozzle corresponds to the filter plate, and the other end of the air inlet pipe is communicated with one of the air inlet rings.

[0016] Beneficial effects

[0017] Compared with the known prior art, the technical scheme provided by the present application has the following beneficial effects:

[0018] Firstly, by arranging the sliding filling mechanism and the tightening cleaning assembly, when the sliding sleeve body moves, the sliding block extrudes the sliding ring, the sliding ring further extrudes the compression ring to compress air and enter the air bag through the one-way valve, the air bag is inflated to fill the gap between the slip sleeve body to block impurities from entering, when the slip sleeve body contracts, the gas in the air bag enters the cleaning ring through the one-way valve and is sprayed out through the concentrated nozzle to clean the mating surface, and the telescopic protection assembly blocks impurities from falling into the connecting gap, thereby effectively avoiding the movement of the sliding sleeve body being blocked and ensuring smooth telescoping of the slip sleeve body.

[0019] Secondly, the application sets the blocking ring, the flow divider, the dispersion head and the support strip, the blocking ring is located at the top of the connecting gap of the protection plate to block the splashing impurities, the inclined internal structure can guide the gas to discharge the impurities, the flow divider can divide the gas to clean the impurities on both sides of the top of the gas bag, the dispersion head can expand the cleaning coverage of the concentrated nozzle, the support strip supports the gas bag to form the inclined gap to facilitate the discharge of the impurities, thereby improving the cleaning efficiency and reducing the difficulty of repeated packing.

[0020] Thirdly, the application sets the air inlet ring, the filter plate, the cleaning ring and the compression ring, the air inlet ring can supplement the air pressure when the air pressure is low after the sliding ring and the extrusion ring reset, the filter plate can filter the entering gas or fluid to block the impurities, when the sliding sleeve body drives the cleaning ring to move, the compression ring cooperates with the compressed gas to make the medium in the cleaning ring sprayed out through the cleaning nozzle and remove the impurities on the surface of the filter plate to prevent the blockage. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0022] Figure 1 is a schematic view of the present application;

[0023] Figure 2 is a sectional view of the present application;

[0024] Figure 3 is a partial sectional view of the present application;

[0025] Figure 4 is a partial exploded view of the present application;

[0026] Figure 5 is a partial bottom view of the present application;

[0027] Figure 6 is a partial view of the present application; Figure 4 is an enlarged view of A in the present application.

[0028] The drawings show: 1, slip body; 2, sliding sleeve body; 3, vertebral body; 4, sliding filling mechanism; 41, sliding block; 42, sliding ring; 43, extrusion ring; 44, air bag; 45, telescopic protection assembly; 451, protection plate; 452, guide rod; 453, stretching plate; 5, tightening cleaning assembly; 51, cleaning ring; 52, concentrated spray head; 6, blocking ring; 7, shunt plate; 8, dispersion head; 9, support strip; 10, support sheet; 11, sliding sheet; 12, magnetic strip; 13, air inlet ring; 14, half ring; 15, filter plate; 16, compression ring; 17, air inlet pipe; 18, cleaning spray head. DETAILED DESCRIPTION

[0029] To make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0030] The present application will be further described below with reference to the embodiments.

[0031] Referring to the drawings Figures 1-6 A sliding sleeve slip includes a slip body 1, a sliding sleeve body 2 and a vertebral body 3, the slip body 1 is slidingly connected to the surface of the vertebral body 3, the sliding sleeve body 2 is slidingly connected to the surface of the vertebral body 3, and the bottom of the sliding sleeve body 2 is hingedly connected to the top of the slip body 1, the inner side of the sliding sleeve body 2 is hingedly connected with a sliding filling mechanism 4, the sliding filling mechanism 4 includes a sliding block 41, the surface of the sliding block 41 is slidingly connected with a sliding ring 42, the surface of the sliding ring 42 is slidingly connected with an extrusion ring 43, and the extrusion ring 43 is embeddedly and fixedly connected inside the vertebral body 3, the bottom of the extrusion ring 43 is communicated with an air bag 44 through a one-way valve, and the air bag 44 is fixedly connected between the slip body 1, and the outer side of the slip body 1 is fixedly connected with a telescopic protection assembly 45;

[0032] The top of the air bag 44 is communicated with the tightening cleaning assembly 5, the tightening cleaning assembly 5 includes a one-way valve, the other end of the one-way valve is communicated with the cleaning ring 51 through a pipeline, and the cleaning ring 51 is fixedly connected to the surface of the sliding sleeve body 2. The bottom of the cleaning ring 51 is communicated with a plurality of groups of concentrated nozzles 52. When the sliding sleeve body 2 moves, the sliding block 41 on the inner side will form extrusion on the inner side of the sliding ring 42. When the extrusion reaches a certain degree, the sliding ring 42 will be further extruded by the extrusion ring 43, so that the air in the sliding ring 42 and the extrusion ring 43 is compressed. It should be noted that the compression can compress the air in the sliding ring 42 and the extrusion ring 43 into the air bag 44, so as to ensure the normal use of the air bag 44. At this time, the compressed air in the extrusion ring 43 is transmitted into the air bag 44 through the one-way valve, so as to make the air bag 44 inflate and rise, thereby filling the gap between the slip bodies 1, effectively avoiding the invasion of debris when the slip body 1 is opened. It should be noted that all air paths in the technical solution are sealed by the sealing structure of the prior art.

[0033] When the slip body 1 is contracted under the pulling of the sliding sleeve body 2, the air bag 44 is compressed, so that the gas in the air bag 44 enters the cleaning ring 51 of the tightening cleaning assembly 5 through the one-way valve, and is then sprayed out through a plurality of groups of concentrated nozzles 52, so as to blow and clean the matching surface between the slip bodies 1. At the same time, the telescopic protection assembly 45 on the outer side of the slip body 1 can block the impurities in the wellbore from falling into the connecting gap on the top of the slip body 1, so as to reduce the invasion of impurities, thereby avoiding the movement of the sliding sleeve body 2 being blocked, ensuring the smooth telescoping of the slip teeth, improving the operation efficiency. In addition, the sliding ring 42 is connected to the inside of the extrusion ring 43 through a plurality of groups of springs distributed in a ring shape, so as to facilitate the quick resetting after extrusion.

[0034] The telescopic protection assembly 45 comprises protection plates 451, between which a sliding groove is formed, the inside of the sliding groove is slidably connected with a guide rod 452, the protection plates 451 are fixedly connected with a stretching plate 453, the connecting gap between the protection plates 451 is aligned with the concentrated nozzle 52, in the telescopic protection assembly 45, the protection plates 451 can slide in the sliding groove through the guide rod 452, so that they are always stably connected with the displacement of the slip body 1, the stretching plate 453 between the protection plates 451 can be stretched with the movement of the protection plates 451, so as to seal and protect the protection plates 451, effectively block the impurities in the wellbore from falling into the connecting gap between the slip bodies 1, and at the same time, the connecting gap between the protection plates 451 is accurately aligned with the concentrated nozzle 52, so as to ensure that the gas sprayed by the concentrated nozzle 52 can smoothly enter the gap between the protection plates 451 and the slip body 1, realize the targeted cleaning of the sliding fit surface, achieve the synergistic effect of protection and cleaning, the outer side of the sliding sleeve body 2 is fixedly connected with a blocking ring 6, and the blocking ring 6 is located at the top of the connecting gap of the protection plates 451, the inside of the blocking ring 6 is obliquely arranged, the blocking ring 6 on the outer side of the sliding sleeve body 2 is located at the top of the connecting gap of the protection plates 451, which can effectively block the impurities splashed in the wellbore from entering the inside gap between the protection plates 451, and the inclined internal structure can guide the gas sprayed by the concentrated nozzle 52, so that the gas flows obliquely, thereby driving the impurities to be discharged outward, reducing the retention of impurities in the protection area.

[0035] The inner part of the blocking ring 6 is fixedly connected with a shunt plate 7, the top of the slip body 1 is provided with a dispersing head 8, and the dispersing head 8 is communicated with the concentrated nozzle 52 at the top of the slip body 1. The shunt plate 7 in the inner part of the blocking ring 6 can guide the gas flowing through the blocking ring 6 to be shunted, so that the shunted gas acts on the impurities accumulated on both sides of the top of the air bag 44, realizing targeted shunting and cleaning. The dispersing head 8 at the top of the slip body 1 is communicated with part of the concentrated nozzle 52, which can further uniformly disperse the cleaning medium sprayed by the concentrated nozzle 52, effectively expand the cleaning coverage and improve the cleaning effect. The outer side of the air bag 44 is fixedly connected with a supporting strip 9, the bottom of the supporting strip 9 is fixedly connected with the bottom surface in the inner part of the air bag 44, and the supporting strip 9 in the inner part of the air bag 44 connects the top surface and the bottom surface of the air bag 44. When the air bag 44 is inflated or shrunk under the action of air pressure, the supporting strip 9 can support the outer side of the air bag 44, so that the two sides of the outer side of the gas are lowered, and the connecting inclined gap between the slip body 1 is formed, which facilitates the airflow to blow out the impurities. The bottom of the air bag 44 is fixedly connected with a supporting sheet 10, the outer side of the supporting sheet 10 is hingedly connected with a sliding sheet 11, and the sliding sheet 11 is slidingly connected with the slip body 1. The supporting sheet 10 in the inner part of the air bag 44 can support the bottom of the air bag 44, so that the air bag 44 maintains the basic position and prevents the air bag 44 from collapsing excessively when it is not inflated. The sliding sheet 11 hingedly connected with the outer side of the supporting sheet 10 is slidingly connected with the slip body 1. When the slip body 1 slides on the surface of the vertebral body 3, the sliding sheet 11 slides synchronously with the slip body 1, and the sliding of the sliding sheet 11 extends the supporting sheet 10, so that the supporting sheet 10 can better support the bottom of the air bag 44. The bottom of the stretching plate 453 is fixedly connected with a magnetic strip 12, and the magnetic strip 12 is magnetically connected with the outer side of the supporting strip 9. The magnetic strip 12 and the supporting strip 9 are magnetically connected with each other. When the air bag 44 is inflated, the magnetic connection can enhance the supporting effect of the supporting strip 9 on the outer side of the air bag 44, so that the two sides of the outer side of the air bag 44 form an inclined angle, thereby providing an outlet channel for the accumulated impurities and facilitating efficient cleaning of the impurities.

[0036] The outer side of the sliding ring 42 is communicated with the air inlet ring 13 through the air pressure valve, the outer side of the air inlet ring 13 is fixedly connected with the half ring 14, the top of the half ring 14 is communicated with the filter plate 15, and the half ring 14 and the filter plate 15 are fixedly connected with the sliding sleeve body 2. The air inlet ring 13 on the outer side of the sliding ring 42 is communicated with the sliding ring 42 through the air pressure valve. When the sliding ring 42 is no longer extruded by the extrusion ring 43 and the internal air pressure is low, the air pressure can be supplemented in time. The half ring 14 and the filter plate 15 can cooperate to filter and protect the outer side of the air inlet ring 13. The filter plate 15 can effectively filter the entering gas or fluid and block the impurities from entering the sliding component, so as to avoid that the sliding filling mechanism 4 is blocked and moves due to the impurities, ensure that the sliding filling mechanism 4 always runs smoothly, and the internal activity of the cleaning ring 51 is connected with the compression ring 16. The top of the compression ring 16 is fixedly connected with the vertebral body 3 through the connecting rod. One side of the cleaning ring 51 is communicated with the air inlet pipe 17 through the one-way valve. The top of the cleaning ring 51 is communicated with the cleaning nozzle 18, and the air injection end of the cleaning nozzle 18 corresponds to the filter plate 15. The other end of the air inlet pipe 17 is communicated with one of the air inlet rings 13. When the sliding sleeve body 2 drives the cleaning ring 51 to move, the compression ring 16 in the cleaning ring 51 is fixedly connected with the vertebral body 3 through the connecting rod, so the compression ring 16 does not move. The movement of the cleaning ring 51 will cooperate with the compression ring 16 to compress the gas. The air inlet pipe 17 can introduce the gas into the cleaning ring 51 through one of the air inlet rings 13 before compression. Under the extrusion of the compression ring 16, the medium in the cleaning ring 51 is sprayed out through the cleaning nozzle 18, and the air injection end of the cleaning nozzle 18 corresponds to the bottom of the filter plate 15, so that the filter plate 15 can be backwashed, the impurities attached to the surface of the filter plate 15 can be removed, the filter plate 15 can be prevented from being blocked, the air inlet ring 13 can continuously and stably intake air, and the normal work of the air inlet ring 13 is ensured.

[0037] Working principle: in use, before each component moves, the internal part of the cleaning ring 51 is connected with the air inlet pipe 17 through the one-way valve, and filtered air is introduced from the air inlet ring 13. The sliding ring 42 and the extrusion ring 43 are also supplemented with air pressure through the air inlet ring 13. Before the setting operation is performed, the sliding sleeve body 2 slides along the surface of the vertebral body 3, the sliding block 41 inside is synchronously moved with the sliding sleeve body 2 and gradually extrudes the inside of the sliding ring 42. With the continuous movement of the sliding sleeve body 2, when the sliding block 41 slides to the limit position, it will drive the sliding ring 42 to move along the surface of the extrusion ring 43, and then extrude the internal space of the extrusion ring 43, so that the air between the sliding ring 42 and the extrusion ring 43 is compressed. At this time, the compressed air enters the air bag 44 through the one-way valve connected with the extrusion ring 43, so that the air bag 44 is inflated and the gap between the slipper body 1 is filled, so that the debris in the wellbore is prevented from invading when the slipper body 1 is opened. At the same time, the movement of the slipper body 1 drives the outer side of the protection plate 451 and the connected components to move:

[0038] The protective plate 451 is kept in stable connection with the slip body 1 through the sliding of the guide rod 452 in the sliding groove, and moves synchronously with the expansion of the slip body 1. The stretching plate 453 between the protective plates 451 is stretched with the expansion of the protective plate 451, forming a sealed protection structure to block the falling of impurities such as drilling fluid solid particles and cuttings into the connecting gap of the slip body 1. During the inflation of the air bag 44, the support strip 9 inside the air bag 44 supports the top surface, so that the two sides of the outside of the air bag 44 naturally sink, forming an inclined gap between the air bag 44 and the slip body 1, reserving a channel for subsequent impurity discharge. The support sheet 10 at the bottom cooperates with the sliding sheet 11 connected with the slip body 1 to stably support the bottom of the air bag 44, ensuring that the air bag 44 is always in the effective blocking position between the slip body 1. The retaining ring 6 protects the top of the connecting gap of the protective plate 451, effectively reducing the entry of impurities;

[0039] During this process, the movement of the sliding sleeve body 2 also synchronously drives the movement of the cleaning ring 51. Since the compression ring 16 inside the cleaning ring 51 is fixed with the vertebral body 3 through the connecting rod, the movement of the cleaning ring 51 will cooperate with the compression ring 16 to extrude the internal gas. At this time, one side of the cleaning ring 51 is connected with one of the groups of air inlet rings 13 through the air inlet pipe 17 connected with the one-way valve, and the gas has been introduced in advance. Under the compression action, the gas is sprayed out through the cleaning nozzle 18, and the jet end is directly opposite the bottom of the filter plate 15, timely removing the impurities adhered to the surface of the filter plate 15 to avoid blockage and ensure that the air inlet ring 13 can continuously and stably supplement the air source for the sliding ring 42, the extrusion ring 43 and the cleaning ring 51;

[0040] When switching to the unblocking operation, the slip body 1 is retracted along the vertebral body 3 under the pulling of the sliding sleeve body 2. During this process, the slip body 1 extrudes the air bag 44, so that the gas in the air bag 44 enters the cleaning ring 51 through the one-way valve connected at the top of the air bag 44, and gathers at the bottom of the compression ring 16. Then the gas is sprayed out through the several groups of concentrated nozzles 52. At this time, the retaining ring 6 outside the sliding sleeve body 2 is located at the top of the connecting gap of the protective plate 451, and the concentrated nozzles 52 opposite the retaining ring 6 will spray the gas flow into the retaining ring 6. The retaining ring 6 guides the gas flow through the inclined internal structure to make the gas flow in the inclined direction, cooperates with the inclined gap between the outside of the air bag 44 and the slip body 1, and drives the impurities to pass through the bottom of the protective plate 451 and the outside of the air bag 44 to be discharged outward, ensuring that the gas flow can directly act on the connecting gap between the outside of the air bag 44 and the slip body 1, realizing targeted cleaning. At the same time, part of the concentrated nozzles 52 are connected with the dispersion head 8 at the top of the slip body 1, further dispersing the gas flow to the top of the protective plate 451 and the top of the stretching plate 453, expanding the cleaning range, cleaning the accumulated impurities, and the magnetic strip 12 at the bottom of the stretching plate 453 is magnetically connected with the outside of the support strip 9 to assist the outside of the air bag 44 to maintain the inclined angle, which is more conducive to the discharge of impurities;

[0041] After the sliding ring 42 and the extrusion ring 43 complete the action and reset, the internal air pressure is reduced, at this time the air inlet ring 13 outside the sliding ring 42 automatically inhales the external air to supplement the air pressure through the air pressure valve, the cleaning ring 51 also supplements the air pressure through the air inlet pipe 17 communicated with the air inlet ring 13, the inhaled air enters after being filtered by the filter plate 15 at the bottom of the half ring 14, effectively blocks the impurities from invading the sliding filling mechanism 4, and guarantees the smooth operation of the whole device;

[0042] Through the orderly linkage of the above-mentioned components, the influence of impurities on the mating surface of the slip body 1 can be avoided through the synergistic effect of protection and cleaning, the slip teeth of the slip body 1 can be smoothly expanded and contracted, and the operation efficiency and reliability are significantly improved.

[0043] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. A sliding sleeve slip comprising a slip body (1), a sliding sleeve body (2) and a plug body (3), characterized in that: The slip body (1) is slidingly connected to the surface of the vertebral body (3), the sliding sleeve body (2) is slidingly connected to the surface of the vertebral body (3), and the bottom of the sliding sleeve body (2) is hingedly connected to the top of the slip body (1), the inner side of the sliding sleeve body (2) is hingedly connected with the sliding filling mechanism (4), the sliding filling mechanism (4) comprises a sliding block (41), the surface of the sliding block (41) is slidingly connected with a sliding ring (42), the surface of the sliding ring (42) is slidingly connected with an extrusion ring (43), and the extrusion ring (43) is embedded and fixedly connected in the inside of the vertebral body (3), the bottom of the extrusion ring (43) is communicated with the air bag (44) through a one-way valve, and the air bag (44) is fixedly connected between the air bag (44) and the slip body (1), the outer side of the slip body (1) is fixedly connected with the telescopic protection assembly (45). The top of the air bag (44) is communicated with the tightening and cleaning assembly (5) through a one-way valve, the tightening and cleaning assembly (5) comprises a cleaning ring (51), and the cleaning ring (51) is fixedly connected to the surface of the sliding sleeve body (2), and the bottom of the cleaning ring (51) is communicated with a plurality of groups of concentrated nozzles (52).

2. A sliding sleeve slip as defined by claim 1, wherein, The telescopic protection assembly (45) comprises a protection plate (451), a sliding groove is formed between the protection plates (451), a guide rod (452) is slidingly connected in the sliding groove, a stretching plate (453) is fixedly connected between the protection plates (451), and the connecting gap between the protection plates (451) is aligned with the concentrated nozzles (52).

3. A sliding sleeve slip as defined by claim 2, wherein, The outer side of the sliding sleeve body (2) is fixedly connected with a blocking ring (6), and the blocking ring (6) is located at the top of the connecting gap of the protection plates (451), and the inside of the blocking ring (6) is inclined.

4. A sliding sleeve slip as defined by claim 3, wherein, The inside of the blocking ring (6) is fixedly connected with a shunt plate (7), the top of the slip body (1) is provided with a dispersing head (8), and the dispersing head (8) is communicated with the concentrated nozzles (52) on the top of the slip body (1).

5. A sliding sleeve slip as defined by claim 1, wherein, The outer side of the inside of the air bag (44) is fixedly connected with a support strip (9), and the bottom of the support strip (9) is fixedly connected with the bottom surface of the inside of the air bag (44).

6. A sliding sleeve slip as defined by claim 1, wherein, The bottom of the air bag (44) is fixedly connected with a support sheet (10), the outer side of the support sheet (10) is hingedly connected with a sliding sheet (11), and the sliding sheet (11) is slidingly connected with the slip body (1).

7. A sliding sleeve slip as defined by claim 2, wherein, The bottom of the stretching plate (453) is fixedly connected with a magnetic strip (12), and the magnetic strip (12) is magnetically connected with the outer side of the support strip (9).

8. A sliding sleeve slip as defined by claim 1, wherein, The outer side of the sliding ring (42) is communicated with an air inlet ring (13) through an air pressure valve, the outer side of the air inlet ring (13) is fixedly connected with a half ring (14), the top of the half ring (14) is communicated with a filter plate (15), and the half ring (14) and the filter plate (15) are fixedly connected with the sliding sleeve body (2).

9. A sliding sleeve slip as defined by claim 1, wherein, The inside of the cleaning ring (51) is movably connected with a compression ring (16), the top of the compression ring (16) is fixedly connected with the vertebral body body (3) through a connecting rod, one side of the cleaning ring (51) is communicated with an air inlet pipe (17) through a one-way valve, the top of the cleaning ring (51) is communicated with a cleaning nozzle (18), the air outlet end of the cleaning nozzle (18) corresponds to the filter plate (15), and the other end of the air inlet pipe (17) is communicated with one of the air inlet rings (13).

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