High-temperature-resistant and high-pressure-resistant packer for deep production in oil field

Abstract

The invention belongs to the technical field of packers, and discloses a high-temperature-resistant and high-pressure-resistant packer for deep production in an oil field, which comprises a packer body provided with a slip; the mounting ring is arranged on the packer body, and a mounting and dismounting assembly is arranged at the top of the mounting ring and used for mounting and dismounting the slips; the mounting and dismounting assembly comprises two moving rings connected to the bottom of the slip, first fixing grooves are formed in the sides, close to each other, of the two moving rings, first limiting assemblies are arranged in the first fixing grooves, the first limiting grooves are formed in the packer body, and the first limiting assemblies are connected with the first limiting grooves in an inserted mode and used for fixing the slip to the packer body. By means of the movable ring, the first limiting assembly and the second limiting assembly, the multiple slips can be conveniently and simultaneously mounted and dismounted, meanwhile, the first limiting assembly is protected and limited through the protection block, the stability and convenience during mounting and dismounting of the slips are improved, and then using of the packer is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of packers, and in particular relates to a high-temperature and high-pressure resistant packer for deep use in oil fields. Background Art

[0002] In the extraction of oil and natural gas, packers are needed to achieve stratified isolation and seal the annular space between the oil pipe and casing or the open hole wall in the high temperature and high pressure environment of deep wells. The packers are mainly characterized by high temperature resistance, high pressure sealing and good anchoring ability. When the packer is lowered into the well with the oil pipe to the designed position, the rubber cylinder is bulged and deformed through hydraulic and mechanical means, thereby sealing the annular space between the oil pipe and the casing to achieve stratified isolation.

[0003] However, in the existing process, the slips on the packer are worn out after long-term use, which affects the use. The slips need to be installed and removed one by one, and multiple slips cannot be installed and removed at the same time, which makes it difficult to improve the convenience of installation and removal. Summary of the invention

[0004] The present invention aims at solving the problems in the prior art and proposes the following technical solutions: A high temperature and high pressure resistant packer for deep oil field, comprising: The packer body is provided with slips; A mounting ring is arranged on the packer body, and a mounting and disassembly assembly is arranged on the top of the mounting ring for mounting and disassembling the slips; The installation and removal components include: Two movable rings are connected to the bottom of the slips, and a first fixing groove is provided on one side of the two movable rings close to each other, and a first limiting component is provided in the first fixing groove; A first limiting groove is provided on the packer body, and a first limiting assembly is plugged into the first limiting groove to fix the slip on the packer body; The second limiting component is arranged between the mounting ring and the two movable rings.

[0005] As a preferred embodiment of the above technical solution, the packer body comprises: The positioner is connected to a fracturing device, the fracturing device is connected to a casing, the mounting ring is connected to the fracturing device, the movable ring is arranged on the outer side of the bottom end of the casing, and the first limiting groove is arranged on the outer side of the casing; A hydraulic ejector is connected to the top of the casing, and a safety release device is provided on the top of the hydraulic ejector; The rubber sleeve is sleeved on the outside of the casing.

[0006] As a preferred embodiment of the above technical solution, the first limiting component includes: A first limiting block is arranged on the inner side of the moving ring, and the first limiting block is plugged into the first limiting groove; An arc-shaped block is slidably disposed in the first fixing groove; A connecting rod connected to one side of the first limiting block, one end of the connecting rod passes through the first limiting block and is connected to the limiting plate; The limiting plate is arranged at the outer connecting part of the two moving rings, and the limiting plate and the arc block are connected with the telescopic rod through the first elastic member.

[0007] As a preferred embodiment of the above technical solution, the second limiting component includes: A fixed block connected to the bottom of the two moving rings; Two protection blocks are slidably connected to the top of the mounting ring to protect the fixed block; A limiting member, arranged on the inner walls of the two protection blocks; The slot is arranged on one side of the fixing block, and the limiting piece is plugged into the slot.

[0008] As a preferred embodiment of the above technical solution, two protection blocks are located between the mounting ring and the movable ring, and the limiting members are the same in number as the fixed blocks and are all located between the two protection blocks and the fracturing device.

[0009] As a preferred embodiment of the above technical solution, a card block is provided on one side of the slip close to the fracturing device, a first movable opening is provided on one side of the card block, and a mounting groove is provided on one side of the fracturing device close to the card block, and the card block is plugged into the mounting groove to limit the position of the slip; A protective adjustment assembly is provided on one side of the installation groove and on the slips, and a pusher is connected in the installation groove, and the pusher includes: A push rod connected to the inner wall of the installation groove; The extrusion block is connected to one side of the push rod. The shape of the extrusion block is trapezoidal and is used to push the protection adjustment component to move.

[0010] As a preferred embodiment of the above technical solution, the protection adjustment component includes: Two movable blocks are slidably arranged inside the slips, the two movable blocks are connected by a second elastic member, and the sides of the two movable blocks close to each other are inclined surfaces; A moving block connected to the top of the movable block; Grooves are arranged on both sides of the slips, and the moving blocks are slidably connected inside the grooves; The supporting plate is hingedly arranged between the groove and the moving block.

[0011] As a preferred embodiment of the above technical solution, moving openings are provided on both sides of the bottom end of the slip for movement of the two movable blocks, and the grooves are connected to the moving openings.

[0012] The beneficial effects of the present invention are: (1) The present invention facilitates the installation and removal of multiple slips at the same time by means of the movable ring, the first limiting assembly and the second limiting assembly. At the same time, the first limiting assembly is protected and limited by the protective block, thereby improving the stability and convenience of the installation and removal of the slips, thereby facilitating the use of the packer. (2) The present invention further improves the accuracy and stability of the installation of the slip position through the action of the clamping block. At the same time, through the action of the push rod and the extrusion block, under the action of the movable block, the moving block and the support plate, the contact area between the slip and the moving ring is increased, the stability of the installation and use of the slip is improved, the deformation of the slip is reduced, the effect of disassembly and installation is affected, and the service life of the slip is thereby increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 What is shown is a schematic diagram of the overall structure of the embodiment; Figure 2 What is shown is a structural diagram of the clamping position and installation and removal components of the embodiment; Figure 3 Shown is a structural diagram of the second defined component of the embodiment; Figure 4 Shown is a structural diagram of a mounting ring, a fracturing device, and a positioner according to an embodiment; Figure 5 Shown is a structural diagram of the slips and the moving ring of the embodiment; Figure 6 Shown is a structural diagram of a protection adjustment assembly of an embodiment; Figure 7 The structure diagram of the movable ring, the fixed block and the limiting member of the embodiment is shown; Figure 8 Shown is a cross-sectional view of an embodiment moving ring.

[0014] In the figure: 1. Slip; 2. Mounting ring; 3. Moving ring; 4. Positioner; 5. Fracturing device; 6. Casing; 7. Hydraulic ejector; 8. Safety release; 9. Rubber sleeve; 10. First limiting block; 11. Arc block; 12. Connecting rod; 13. Limiting plate; 14. First elastic member; 15. Telescopic rod; 16. Fixed block; 17. Protective block; 18. Connecting block; 19. Second limiting block; 20. Slot; 21. Block; 22. Push rod; 23. Extrusion block; 24. Movable block; 25. Second elastic member; 26. Moving block; 27. Support plate. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0016] The present invention provides a high temperature and high pressure resistant packer for deep oil field, such as Figures 1 to 4As shown, it includes a packer body, a slip 1, a mounting ring 2 and an installation and disassembly assembly. The packer body is provided with a slip 1, and the mounting ring 2 is provided on the packer body. There are two mounting rings 2, and one side of the mounting rings 2 is fitted. The top of the mounting ring 2 is provided with an installation and disassembly assembly. The installation ring 2 and the installation and disassembly assembly are used to facilitate the installation of the slip 1 on the packer body. The installation and disassembly assembly is used to install and disassemble the slip 1. The installation and disassembly assembly includes two moving rings 3, a first fixed groove, a first limiting assembly, a first limiting groove and a second limiting assembly. The two moving rings 3 are fixedly connected to the bottom of the slip 1. The slip 1 There are four of them, and they are arranged around the outside of the bottom end of the casing 6. Two cava 1 are arranged on the top of each movable ring 3. A first fixing groove is opened on the side where the two movable rings 3 are close to each other. A first limiting component is arranged in the first fixing groove. The first limiting groove is opened on the packer body. The first limiting component is plugged into the first limiting groove to fix the cava 1 on the packer body. The two movable rings 3 and the cava 1 can be connected to and disassembled from the packer body through the first limiting component. The second limiting component is arranged between the mounting ring 2 and the two movable rings 3 to further limit the installation of the cava 1 and the packer body.

[0017] Two mounting rings 2 are installed on the packer body. The two movable rings 3 and the cava 1 are positioned outside the packer body through the mounting rings 2, so that multiple cava 1 are aligned with the positions where they need to be installed. The two movable rings 3 are moved, and the multiple cava 1 can be installed and fixed on the packer body at one time through the first limiting component and the first fixing groove. Under the action of the second limiting component, the first limiting component is limited again to improve the stability of the first limiting component, so that the installation of the cava 1 is limited, thereby improving the stability and convenience of the installation.

[0018] When it is necessary to disassemble the cava 1, move the second limiting component to release the limitation on the first limiting component, and then move the first limiting component so that the first limiting component no longer limits the cava 1, so that the cava 1 is no longer limited on the packer body, and move the movable ring 3 away from both sides of the packer body so that the movable ring 3 drives the cava 1 away from the packer body, and then the installation ring 2 drives the movable ring 3, the first limiting component and the second limiting component to be removed from the packer body, so that multiple cava 1 can be replaced at one time, which improves the convenience during disassembly and is easy to use.

[0019] like Figures 1 to 4As shown, the packer body includes a positioner 4, a fracturing device 5, a casing 6, a hydraulic ejector 7, a safety release 8 and a rubber sleeve 9. The top of the positioner 4 is fixedly connected to the fracturing device 5, the top of the fracturing device 5 is fixedly connected to the casing 6, the mounting ring 2 is fixedly connected to the fracturing device 5, the movable ring 3 is arranged on the outer side of the bottom end of the casing 6, the mounting ring 2 is located at the bottom of the movable ring 3, the first limiting groove is opened on the outer side of the casing 6, the hydraulic ejector 7 is fixedly connected to the top of the casing 6, the top of the hydraulic ejector 7 is provided with a safety release 8, and the rubber sleeve 9 is sleeved on the outer side of the casing 6 for sealing.

[0020] When in use, casing 6 is lowered into the oil well, and then the fracturing device 5 and the hydraulic injector 7 are positioned to the target layer through the positioner 4, and hydraulic injection and fracturing are carried out with the hydraulic injector 7 and the fracturing device 5, thereby compressing the rubber sleeve 9 to expand and fit the casing 6 to form a seal, and finally the safety release 8 is used to evacuate the tool, and by installing the mounting ring 2 on the fracturing device 5, the first limiting component, the movable ring 3, the second limiting component and the slip 1 can be installed, so that the slip 1 can be installed on the casing 6, and by moving the first limiting component, it can be plugged into the first limiting groove on one side of the fracturing device 5, and the slip 1 can be installed and limited.

[0021] like Figure 5 , Figure 7 , Figure 8 As shown, in order to simultaneously install and disassemble multiple slips 1 and improve the stability of installation and the convenience of disassembly, the first limiting assembly includes a first limiting block 10, an arc block 11, a connecting rod 12, a limiting plate 13, a first elastic member 14 and a telescopic rod 15. The first limiting block 10 is arranged at the connection on the inner side of the moving ring 3. The first limiting block 10 is plugged into the first limiting groove. Both ends of the arc block 11 are respectively located inside the first fixed grooves of the two moving rings 3. The arc block 11 is slidably connected to the inner wall of the first fixed groove. The connecting rod 12 is fixedly connected to one side of the first limiting block 10. A second movable opening is opened in the middle of the first limiting block 10. One end of the connecting rod 12 passes through the first movable opening. The two movable openings are fixedly connected to the limit plate 13, the limit plate 13 is arranged at the outer connection of the two movable rings 3, one side of the limit plate 13 is in contact with the outer walls of the two movable rings 3, the limit plate 13 and the arc block 11 are connected with the telescopic rod 15 through the first elastic member 14, one end of the first elastic member 14 is fixedly connected to one side of the limit plate 13, and the other end is fixedly connected to one side of the arc block 11, the first elastic member 14 is located outside the second movable opening and between the telescopic rod 15, two second fixed grooves are provided on the side of the arc block 11 close to the limit plate 13, the telescopic rod 15 is fixedly installed with the second fixed groove, and one end of the telescopic rod 15 passes through the second fixed groove and is fixedly connected to one side of the limit plate.

[0022] When the slip 1 is installed, the mounting ring 2 is installed on the fracturing device 5, and the second limiting assembly and the movable ring 3 are located outside the casing 6, so that the first limiting block 10 is aligned with the first limiting groove, and the limiting plate 13 is pulled to drive the first elastic member 14 to stretch, and the telescopic rod 15 is extended by the action of the first elastic member 14, and the extension of the telescopic rod 15 limits the position of the limiting plate 13, when the limiting plate 13 drives the connecting rod 12 to drive the first limiting block 10 to move to the second movable opening, the movable ring 3 is pushed in the direction close to the casing 6, so that the movable ring 3 drives the slip 1 to move, and when the two sides of the movable ring 3 are fitted, The cava 1 is moved to the position where the sleeve 6 needs to be installed, and then the limiting plate is pushed to move in the direction of the moving ring 3, so that the first elastic member 14 contracts. The first elastic member 14 can be a compression spring. Through the elastic action of the first spring member and driving the telescopic rod 15 to contract, the limiting plate 13 drives the connecting rod 12 to push the first limiting block 10 to move to the first limiting groove. At this time, the limiting plate 13 moves to the connection between the outsides of the two moving rings 3 to limit the two moving rings 3. At the same time, the first limiting block 10 is plugged and limited with the first limiting groove, so that multiple cava 1 can be installed on the sleeve 6 at the same time, thereby improving the stability of the installation of the cava 1.

[0023] When it is necessary to disassemble the cava 1, pull the limit plate 13 in the direction away from the movable ring 3, so that the first elastic member 14 is stretched to drive the telescopic rod 15 to extend, and at the same time the connecting rod 12 drives the first limiting block to move to the first movable opening, so that the first limiting block 10 is no longer plugged into the first limiting groove, and then push the movable ring 3 in the direction away from the sleeve 6, so that the two movable rings 3 move along the arc block 11, driving the cava 1 away from the sleeve 6, and the movable ring 3 drives the cava 1 to be removed from the second limiting assembly, so that the cava 1 can be replaced.

[0024] like Figure 3 , Figure 7 As shown, in order to limit the positions of the two moving rings 3 and the slip 1 and prevent the slip 1 from deforming and moving, which is inconvenient for installation and disassembly, the second limiting component includes a fixed block 16, two protective blocks 17 and a limiting piece. The fixed block 16 is fixedly connected to the bottom of the two moving rings 3, and the two protective blocks 17 are slidably connected to the top of the mounting ring 2 for protecting the fixed block 16. Two arc grooves are provided on the top of the mounting ring 2. The limiting piece is connected to the inner walls of the two protective blocks 17. The two protective blocks 17 are located between the mounting ring 2 and the moving ring 3. The limiting piece is the same in number as the fixed block 16 and is located between the two protective blocks 17 and the fracturing device 5. The limiting piece includes a connecting block 18 and a second limiting block 19. The connecting block 18 is fixedly installed on the inner wall of the protective block 17. The bottom of the connecting block 18 is slidably connected to the inner wall of the arc groove. The second limiting block 19 is fixedly connected to one side of the connecting block 18. The slot 20 is provided on one side of the fixed block 16, and the second limiting block 19 is plugged into the slot 20.

[0025] When the moving ring 3 moves to the top of the protective block 17, the moving ring 3 drives the fixed block 16 to move between the two protective blocks 17 and is located between the protective block 17 and the sleeve 6. The protective block 17 is installed through the mounting ring 2. When the moving ring 3 is installed, the protective block 17 supports and fixes the moving ring 3 at the bottom, which is convenient for improving the installation stability of the cava 1. The two protective blocks 17 are then rotated so that the protective block 17 moves along the top of the mounting ring 2 and drives the connecting block 18 and the second limiting block 19 to move. When the second limiting block 19 is plugged into the slot 20 on one side of the fixed block 16, the gap between the two protective blocks 17 is away from the fixed block 16, so that the two protective blocks 17 can both shield and protect the fixed block 16, and limit the moving ring 3 again, thereby improving the installation stability of the cava 1 and the moving ring 3. At the same time, the second limiting block 19 is plugged into the slot 20 of the fixed block 16 to limit the protective block 17 to prevent the protective block 17 from moving and affecting the protection effect of the fixed block 16.

[0026] like Figures 2 to 6 As shown, in order to improve the stability of the slip 1 during installation and prevent the slip 1 from being difficult to fit tightly against the wall of the casing 6, a block 21 is provided on the side of the slip 1 close to the fracturing device 5, a first movable opening is provided on one side of the block 21, a mounting groove is provided on the side of the fracturing device 5 close to the block 21, the block 21 is plugged into the mounting groove, a protective adjustment component is provided on one side of the mounting groove and on the slip 1, a second limiting groove is provided inside the bottom end of the slip 1, the protective adjustment component is located inside the second limiting groove, a pushing member is connected in the mounting groove, the pushing member includes a pushing rod 22 and an extruding block 23, the pushing rod 22 and the extruding block 23 are arranged corresponding to the first movable opening, the first movable opening is communicated with the second limiting groove, the pushing rod 22 is fixedly connected to the inner wall of the mounting groove, and the extruding block 23 is fixedly connected to the inner wall of the mounting groove. Connected to one side of the push rod 22, the extrusion block 23 is T-shaped and is used to push the protection adjustment component to move. The protection adjustment component includes two movable blocks 24, a second elastic member 25, a movable block 26 and a support plate 27. The two movable blocks 24 are slidably connected to the second limiting groove, and the two movable blocks 24 are connected by the second elastic member 25. The two movable blocks 24 are close to each other on one side, and the movable block 26 is fixedly connected to the top of the movable block 24. Grooves are set on both sides of the cava 1. The movable block 26 is slidably connected to the inside of the groove. One end of the support plate 27 is hinged to the inner wall of the groove, and the other end is hinged to the movable block 26. Moving openings are opened on both sides of the bottom of the cava 1 for moving the two movable blocks 24, and the grooves are connected to the moving openings.

[0027] When the movable ring 3 is plugged into the first limiting groove through the first limiting block 10 and the one side of the two movable rings 3 is in contact, the slip 1 is driven to move to the side of the sleeve 6, so that the block 21 on one side of the slip 1 is plugged into the installation groove, and at the same time, the pushing rod 22 inside the installation groove drives the extrusion block 23 to move into the second limiting groove of the slip 1 through the first movable opening, so that the extrusion block 23 squeezes the inclined surface of one side of the movable block 24, so that the second elastic member 25 is stretched. The second elastic member 25 can be a compression spring, which is convenient for pushing the movable block 24 to move along the inner wall of the second limiting groove through the moving opening to the outside of the slip 1. When one end of the movable block 24 moves to the outside of the slip 1, it drives the movable block 26 to move out of the groove, and the contact area between the slip 1 and the movable ring 3 is increased by the movable block 24 and the movable block 26. At the same time, when the movable block 26 moves, the support plate 27 is driven to deflect, and the movable block 26 is supported and fixed by the support plate 27, so as to improve the stability of the movable block 26, thereby improving the stability of the slip 1 and preventing the slip 1 from being deformed and affecting the use effect.

[0028] Working principle: When in use, the two mounting rings 2 are installed on the fracturing device 5 so that the protective block 17 is located outside the fracturing device 5, and then the movable ring 3 and the slip 1 are sleeved on the outside of the bottom end of the casing 6, and the fixed block 16 is located in the gap between the two protective blocks 17. The movable ring 3 is supported and limited by the protective block 17, and the limiting plate 13 is pulled to drive the first elastic member 14 to stretch, and the telescopic rod 15 is extended by the action of the first elastic member 14. The extension of the telescopic rod 15 limits the position of the limiting plate 13, and when the limiting plate 13 moves, it also drives the connecting rod 12 to drive the first limiting block 10 to move to the second movable opening, and then pushes the movable ring in the direction close to the casing 6. 3, so that the moving ring 3 drives the cava 1 to move. When the two sides of the moving ring 3 are fitted, the cava 1 moves to the position where the sleeve 6 needs to be installed, and then the limiting plate is pushed to move in the direction of the moving ring 3, so that the first elastic member 14 contracts. The first elastic member 14 can be a compression spring. Through the elastic action of the first spring member and driving the telescopic rod 15 to contract, the limiting plate 13 drives the connecting rod 12 to push the first limiting block 10 to move to the first limiting groove. At this time, the limiting plate 13 moves to the connection between the outer sides of the two moving rings 3 to limit the two moving rings 3. At the same time, the first limiting block 10 is plugged and limited with the first limiting groove, so that multiple cava 1 can be installed on the sleeve 6 at the same time.

[0029] When one side of the two movable rings 3 fits together, the movable ring 3 drives the fixed block 16 to move from the gap between the two protective blocks 17 to between the protective block 17 and the sleeve 6, and then rotates the protective block 17 to move along the top of the mounting ring 2, so that the connecting block 18 drives the second limiting block 19 to move. When the second limiting block 19 is plugged into the slot 20 on one side of the fixed block 16, the gap between the two protective blocks 17 is away from the fixed block 16, so that both protective blocks 17 can shield and protect the fixed block 16, and limit the movable ring 3 again. At the same time, the protective block 17 is limited by plugging the second limiting block 19 into the slot 20 of the fixed block 16.

[0030] When the movable ring 3 is plugged into the first limiting groove through the first limiting block 10 and one side of the two movable rings 3 is fitted together, the two movable rings 3 drive the cava 1 to move to the side of the sleeve 6, so that the block 21 on one side of the cava 1 is plugged into the installation groove, and at the same time, the pushing rod 22 inside the installation groove drives the extrusion block 23 to move through the first movable opening to the second limiting groove of the cava 1, so that the extrusion block 23 squeezes the inclined surface on one side of the movable block 24, so that the second elastic member 25 is stretched, and pushes the movable block 24 to move along the inner wall of the second limiting groove through the movable opening to the outside of the cava 1. When one end of the movable block 24 moves to the outside of the cava 1, it drives the movable block 26 to move out of the groove, and increases the contact area between the cava 1 and the movable ring 3 through the movable block 24 and the movable block 26. At the same time, when the movable block 26 moves, it drives the support plate 27 to deflect, and the movable block 26 is supported and fixed by the support plate 27.

[0031] After the installation of the slip 1 is completed, the positioner 4 is lowered to the predetermined position in the well, and high-pressure liquid is injected into the hydraulic chamber inside the packer through the pipe string from the ground. As the pressure in the hydraulic chamber increases, the pistons in the positioner 4, the fracturing device 5, and the hydraulic injector 7 are simultaneously subjected to uniform hydraulic thrust. Since the piston is connected to the slip 1 through a connecting rod, when the piston makes a linear motion under the action of the hydraulic thrust, the linear motion of the piston is converted into the radial motion of the slip 1, so that the slip 1 expands. When the slip 1 moves, it drives the block 21 to move, so that the push rod 22 drives the extrusion block 23 away from the movable block 24, and under the action of the second elastic member 25, the two movable blocks 24 drive the movable block 26 to gradually move into the groove, and the support plate 27 deflects to the original position, so that the slip 1 is continuously stretched outward, and the bite teeth on its outer surface approach and contact the inner wall of the casing 6, tightly bite the casing 6 wall, and then squeeze the rubber sleeve 9 on the casing 6, so that the rubber sleeve 9 expands and fits tightly to the casing 6 wall, thereby closing the annular space between the oil pipe and the casing 6. The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A high temperature and high pressure packer used in oil fields, characterized in that: include: The packer body is provided with slips (1); A mounting ring (2) is arranged on the packer body, and a mounting and disassembly assembly is arranged on the top of the mounting ring (2) for mounting and disassembling the slip (1); the mounting and disassembly assembly comprises: Two movable rings (3) are connected to the bottom of the slip (1); a first fixing groove is provided on a side of the two movable rings (3) close to each other, and a first limiting component is provided in the first fixing groove; A first limiting groove is provided on the packer body, the first limiting assembly is plugged into the first limiting groove and is used to fix the slip (1) on the packer body; The second limiting component is arranged between the mounting ring (2) and the two movable rings (3).

2. The oilfield deep-sea high-temperature and high-pressure packer according to claim 1, characterized in that: The packer body comprises: The positioner (4) is connected to a fracturing device (5), the fracturing device (5) is connected to a casing (6), the mounting ring (2) is connected to the fracturing device (5), the movable ring (3) is arranged on the outside of the bottom end of the casing (6), and the first limiting groove is opened on the outside of the casing (6); A hydraulic ejector (7) is connected to the top of the sleeve (6), and a safety release device (8) is provided on the top of the hydraulic ejector (7); The rubber sleeve (9) is sleeved on the outside of the sleeve (6).

3. The oilfield deep-sea high-temperature and high-pressure packer according to claim 2, characterized in that: The first limiting component includes: A first limiting block (10) is arranged inside the movable ring (3), the first limiting block (10) being plugged into the first limiting groove; An arc-shaped block (11) slidably disposed in the first fixing groove; A connecting rod (12) is connected to one side of the first limiting block (10); one end of the connecting rod (12) passes through the first limiting block (10) and is connected to a limiting plate (13); the limiting plate (13) is arranged at the outer connection of the two movable rings (3); the limiting plate (13) and the arc block (11) are connected to the telescopic rod (15) via a first elastic member (14).

4. The oilfield deep-sea high-temperature and high-pressure packer according to claim 3, characterized in that: The second limiting component includes: A fixed block (16) connected to the bottom of the two movable rings (3); Two protective blocks (17) slidably connected to the top of the mounting ring (2) and used to protect the fixing block (16); A limiting member, arranged on the inner walls of the two protection blocks (17); A slot (20) is provided on one side of the fixing block (16), and the limiting member is plugged into the slot (20).

5. The oilfield deep-sea high-temperature and high-pressure packer according to claim 4, characterized in that: The two protection blocks (17) are located between the mounting ring (2) and the movable ring (3); the limiting members are the same in number as the fixed blocks (16) and are both located between the two protection blocks (17) and the fracturing device (5).

6. The high temperature and high pressure resistant packer for deep oil field use according to claim 5, characterized in that: A clamping block (21) is arranged on one side of the slip (1) close to the fracturing device (5), a first movable opening is provided on one side of the clamping block (21), a mounting groove is provided on one side of the fracturing device (5) close to the clamping block (21), the clamping block (21) is plugged into the mounting groove, and is used to limit the position of the slip (1); a protective adjustment component is arranged on one side of the mounting groove and on the slip (1), a pushing member is connected in the mounting groove, and the pushing member comprises: A push rod (22), the push rod (22) being connected to the inner wall of the installation groove; The extrusion block (23) is connected to one side of the push rod (22); the extrusion block (23) is in a trapezoidal shape and is used to push the protection adjustment component to move.

7. The oilfield deep-sea high-temperature and high-pressure packer according to claim 6, characterized in that: The protection adjustment component comprises: Two movable blocks (24) are slidably arranged inside the slip (1), the two movable blocks (24) are connected via a second elastic member (25), and the sides of the two movable blocks (24) that are close to each other are inclined surfaces; A moving block (26) connected to the top of the movable block (24); Grooves are arranged on both sides of the slip (1), and the moving block (26) is slidably connected inside the grooves; A support plate (27) is hingedly arranged between the groove and the moving block (26).

8. The high temperature and high pressure resistant packer for deep use in oil fields according to claim 7, characterized in that: Both sides of the bottom end of the slip (1) are provided with moving openings for the two movable blocks (24) to move, and the grooves are in communication with the moving openings.

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