Energy storage injection-production packer and using method

Abstract

The invention provides an energy storage injection and production packer which comprises an inner pipe, a first assembly, a second compression sleeve piece, a slip, a third compression sleeve piece and a second assembly, the first assembly, the second compression sleeve piece, the slip, the third compression sleeve piece and the second assembly are sequentially connected to the outer wall of the inner pipe in a sleeving mode, and the head ends and the tail ends of the first assembly and the second assembly are in butt joint. The outer wall of the inner pipe is further sleeved with a second non-return component and a third non-return component, an annular groove is formed in the inner wall of the third compression sleeve, a middle annular block is arranged in the annular groove, and a distance is reserved between the middle annular block and the third non-return component. The slip is extruded from the two ends at the same time by driving the second compression sleeve piece and the third compression sleeve piece in the inner cavity of the shaft, mutual interference and mutual assistance are achieved, the slip is expanded to be anchored with the inner wall of the shaft, the stability of synchronous external expansion deformation of the two ends of the slip is guaranteed, rapid unblocking of the slip is achieved through an inner pipe cutting method, and the service life of the slip is prolonged. And therefore, the operation requirement of overall rapid recovery of the packer is met.

Description

Technical Field

[0001] The invention belongs to the technical field of energy storage packers, and in particular relates to an energy storage injection packer and a use method thereof. Background Art

[0002] During the operation of the air energy storage system, the injection-production packer needs to have excellent sealing, pressure resistance and pressure-bearing capacity to ensure the safe operation of the gas storage and the efficient storage of energy. At the same time, compressed air energy storage is a long-term operating system with a service life of more than 20 years. As a key component, the ultra-large diameter injection-production packer plays a key role in the service life of the entire system. In particular, the size specifications required for compressed air energy storage far exceed those of conventional injection-production packers, which puts higher requirements on the stability of the ultra-large diameter injection-production packer.

[0003] The difficulty in recovering ultra-large diameter injection and production packers has always been a difficult problem in the industry, especially after the packer fails. The inability to effectively recover them will directly affect the subsequent use of gas storage and air energy storage systems; especially when facing complex application environments, the current common ultra-large diameter injection and production packers use a single plugging structure and do not have an unsealing function, which leads to the problem that the packers cannot be effectively recovered and have poor stability.

[0004] In view of this, overcoming the defects of the above-mentioned prior art is an urgent problem to be solved in the field of this technology. Summary of the invention

[0005] In view of the above problems, the present invention proposes an energy storage injection and production packer, comprising: an inner tube and a first component, a second compression kit, a slip, a third compression kit, and a second component, which are sequentially sleeved on the outer wall of the inner tube and butted at the head and tail ends; the first component and the second component are fixedly sleeved on the inner tube;

[0006] The tail end of the third compression kit is slidably sleeved with the head end of the second kit, the head end side wall of the second kit is provided with an axially extending second slide groove, the tail end side wall of the third compression kit is provided with a second protrusion slidably connected with the second slide groove, and the side wall of the inner tube is provided with a through hole communicating with the compression inner cavity of the second compression kit and the third compression kit;

[0007] Inject hydraulic medium into the compression inner chambers of the second compression kit and the third compression kit to drive the output ends of the second compression kit and the third compression kit to squeeze the front and rear ends of the slips, so that the slips are in an operating state with both ends expanded outward, and the outer wall of the inner tube is also sleeved with a second non-return component and a third non-return component for preventing the output ends of the second compression kit and the third compression kit from resetting;

[0008] An annular groove for accommodating the third non-return component is provided on the inner wall of the third compression kit, and a middle annular block located in the inner cavity of the annular groove is provided on the outer wall of the inner tube, the tail end of the middle annular block faces the third non-return component and keeps a predetermined distance with the third non-return component. After the side wall of the inner tube between the tail end of the middle annular block and the third non-return component is cut, the third compression kit, the lower half of the inner tube and the second component move downward until the inner wall of the annular groove abuts against the head end of the middle annular block, so that the cava is restored from the operating state to the initial state.

[0009] Furthermore, the first component includes an inner liner component, a first sealing tube, and a first compression component that are sequentially sleeved on the outer wall of the inner tube and butted at the head and tail ends, and the tail end of the first compression component is butted with the head end of the second compression component;

[0010] The output end of the first compression set is driven to squeeze the first sealing tube to move toward the inner bushing assembly, so that the first sealing tube is deformed to an operating state, and the outer wall of the inner tube is sleeved with a first non-return component for preventing the output end of the first compression set from resetting;

[0011] The second component includes a fourth compression kit, a second sealing tube, and a lower unsealing component, which are sequentially sleeved on the outer wall of the inner tube and butted at the head and tail ends, and the head end of the fourth compression kit is butted with the tail end of the third compression kit;

[0012] The output end of the fourth compression kit is driven to squeeze the second sealing tube and move downward to the side of the unsealing component, so that the second sealing tube is deformed to an operating state, and the outer wall of the inner tube is sleeved with a fourth anti-return component for preventing the output end of the fourth compression kit from resetting.

[0013] Furthermore, the lower unsealing component includes an unsealing tube, an annular outer protrusion on the outer wall of the inner tube, the inner wall of the tail end of the unsealing tube is sleeved with the outer wall of the annular outer protrusion and is connected to a cut-off pin through a second latch, an annular inner protrusion is arranged at an interval with the annular outer protrusion on the inner wall of the head end of the unsealing tube, the inner wall of the annular inner protrusion is slidably sleeved with the outer wall of the inner tube, and the head end of the unsealing tube is butt-jointed with the tail end of the second sealing tube;

[0014] The shearing force required for the second latch member to be cut off is greater than the deformation force of the second sealing tube in the working state.

[0015] Furthermore, the inner bushing assembly includes a bushing and a guide sleeve;

[0016] The inner wall of the bushing is fixedly sleeved with the outer wall of the inner tube, the outer wall of the bushing is slidably sleeved with the inner wall of the guide sleeve, and a cut-off pin connection is formed between the guide sleeve and the bushing through a first latch member, a first slide groove extending in the axial direction is provided on the side wall of the guide sleeve, a first protrusion slidably sleeved with the first slide groove is provided on the outer wall of the bushing, a predetermined distance is maintained between the inner wall of one end of the first slide groove away from the first sealing tube and the first protrusion, and the tail end of the guide sleeve abuts against the head end of the first sealing tube;

[0017] The shear force required for the first latch member to be cut off is greater than the deformation force of the first sealing tube in the working state.

[0018] Furthermore, the inner tube includes a coupling, an upper center tube, an upper locking tube, a lower locking tube, and a lower center tube, the head and tail ends of which are sleeved in sequence;

[0019] The outer wall of the upper center tube is sleeved with the inner liner assembly, the first sealing tube, and the first compression kit;

[0020] The outer wall of the upper locking tube is sleeved with the second compression kit and the slips;

[0021] The outer wall of the lower locking tube is sleeved with a third compression kit;

[0022] The outer wall of the lower central tube is sleeved with the fourth compression kit, the second sealing rubber cylinder and the lower unsealing component.

[0023] Furthermore, the outer wall of the tail end of the upper center tube is threadedly sleeved with the inner wall of the head end of the upper locking tube, and the first compression kit includes an upper thrust ring, an upper rubber tube locking ring, a first-level hydraulic cylinder, and a first-level piston which are sequentially sleeved on the outer wall of the inner tube;

[0024] The head end of the upper thrust ring is sleeved on the outer wall of the upper center tube, the head end of the upper thrust ring is in contact with the first-level composite sealing rubber tube, the inner wall of the tail end of the upper thrust ring is threadedly sleeved on the outer wall of the head end of the first-level hydraulic cylinder, and the inner wall of the tail end of the first-level hydraulic cylinder is sealed and sleeved with the outer wall of the head end of the upper locking tube;

[0025] The inner wall of the tail end of the first hydraulic cylinder is also sealed with a first piston spaced apart from the head end of the upper locking tube, the inner wall of the first piston is sealed with the outer wall of the upper center tube, the end wall of the tail end of the first piston, the end wall of the head end of the upper locking tube, the inner wall of the tail end of the first hydraulic cylinder and the outer wall of the upper center tube form a compression inner cavity of the first compression kit, and a first through hole connected to the compression inner cavity of the first compression kit is opened on the side wall of the inner tube;

[0026] The first anti-return component is an upper rubber tube lock ring, the inner wall of the upper rubber tube lock ring is connected to the outer wall of the upper center tube through a one-way serrated thread, and the outer wall of the upper rubber tube lock ring is connected to the inner wall of the tail end of the upper thrust ring through a one-way serrated thread.

[0027] Furthermore, the second compression kit includes a secondary hydraulic cylinder, a secondary piston, an upper slip lock ring, and an upper cone which are sequentially sleeved on the outer wall of the inner tube;

[0028] The inner wall of the head end of the secondary hydraulic cylinder is sealed and sleeved with the outer wall of the upper locking tube, the head end of the secondary hydraulic cylinder is butted with the tail end of the first compression kit, the inner wall of the tail end of the secondary hydraulic cylinder is sealed and sleeved with the outer wall of the head end of the secondary piston, the inner wall of the head end of the secondary piston is sealed and sleeved with the outer wall of the upper locking tube, and the head end of the secondary piston is spaced apart from the tail end of the secondary hydraulic cylinder, the inner wall of the tail end of the secondary hydraulic cylinder, the end wall of the head end of the secondary piston, and the outer wall of the upper locking tube jointly form the compression inner cavity of the second compression kit, and a second through hole connected to the compression inner cavity of the second compression kit is opened on the side wall of the inner tube;

[0029] The inner wall of the head end of the secondary piston is sleeved with the outer wall of the upper locking tube, the inner wall of the tail end of the secondary piston is threadedly sleeved with the outer wall of the head end of the upper cone, the inner wall of the upper cone is sleeved with the outer wall of the upper locking tube, and the tail end of the upper cone and the head end of the slip form an inner cone surface against each other;

[0030] The second non-return component is an upper cava locking ring. The inner wall of the rear end of the secondary piston is also connected to the outer wall of the upper cava locking ring through a one-way serrated thread. The inner wall of the upper cava locking ring is connected to the outer wall of the upper locking tube through a one-way serrated thread. The outer wall of the upper cava locking ring is connected to the inner wall of the rear end of the secondary piston through a one-way serrated thread and is spaced apart from the head end of the upper cone.

[0031] Furthermore, the middle annular block is a connecting sleeve, and the inner walls of the head and tail ends of the connecting sleeve are respectively connected with the outer wall of the tail end of the upper locking tube and the outer wall of the head end of the lower locking tube to form a threaded sealing sleeve, and the third compression kit includes a lower cone, a three-stage piston, a lower slip lock ring, and a three-stage hydraulic cylinder which are sequentially sleeved on the outer wall of the inner tube, and the lower slip lock ring is the third non-return component;

[0032] The lower cone is sleeved on the outer wall of the upper locking tube, and the head end of the lower cone and the tail end of the slip form an inner cone surface against each other, the outer wall of the tail end of the lower cone is threadedly sleeved on the inner wall of the head end of the three-stage piston, and the inner wall of the head end of the three-stage piston is provided with a ring groove for accommodating a connecting sleeve and a lower slip locking ring, the lower slip locking ring and the lower cone are respectively located on both sides of the connecting sleeve and are spaced by a predetermined distance, the inner wall of the lower slip locking ring is sleeved on the outer wall of the lower locking tube through a one-way sawtooth thread, and the outer wall of the lower slip locking ring is sleeved on the inner wall of the ring groove of the three-stage piston through a one-way sawtooth thread;

[0033] The inner wall of the tail end of the three-stage piston is sealed with the outer wall of the lower locking tube, the outer wall of the tail end of the three-stage piston is sealed with the inner wall of the head end of the three-stage hydraulic cylinder, the inner wall of the tail end of the three-stage hydraulic cylinder is sealed with the outer wall of the lower locking tube, and the tail end of the three-stage piston is spaced apart from the tail end of the three-stage hydraulic cylinder, the tail end of the three-stage hydraulic cylinder is butted with the head end of the third compression kit, the inner wall of the head end of the three-stage hydraulic cylinder, the end wall of the tail end of the three-stage piston, and the outer wall of the lower locking tube jointly form a compression inner cavity of the third compression kit, and a third through hole connected to the compression inner cavity of the third compression kit is opened on the side wall of the inner tube;

[0034] A second chute extending axially is provided on the side wall of the head end of the three-stage hydraulic cylinder, a second convex block slidably connected to the second chute is provided on the outer wall of the tail end of the three-stage piston, and a predetermined distance is set between the second convex block and the inner wall of the second chute close to the slip side;

[0035] A third chute extending axially is provided on the side wall of the tail end of the three-stage hydraulic cylinder, and a third protrusion slidably connected to the third chute is provided on the outer wall of the tail end of the lower locking tube. A predetermined distance is set between the third protrusion and the inner wall of the third chute close to the slip side.

[0036] Furthermore, the inner wall of the tail end of the lower locking tube is threadedly sealed with the outer wall of the head end of the lower center tube, and the fourth compression kit includes a four-stage piston, a four-stage hydraulic cylinder, a lower rubber cylinder locking ring, and a lower thrust ring which are sequentially sleeved on the outer wall of the inner tube;

[0037] The inner wall of the head end of the four-stage hydraulic cylinder is sealed and sleeved with the outer wall of the tail end of the lower locking tube, and the inner wall of the head end of the four-stage hydraulic cylinder is also sealed and sleeved with the outer wall of the four-stage piston. The outer wall of the four-stage piston is sealed and sleeved with the inner wall of the head end of the four-stage hydraulic cylinder and is arranged at a distance from the tail end of the lower locking tube. The inner wall of the four-stage piston is sealed and sleeved with the outer wall of the lower center tube. The end wall of the head end of the four-stage piston, the outer wall of the lower center tube, the end wall of the tail end of the lower locking tube and the inner wall of the head end of the four-stage hydraulic cylinder jointly form a compression inner cavity of the fourth compression kit, and a fourth through hole connected to the compression inner cavity of the fourth compression kit is opened on the side wall of the inner tube;

[0038] The outer wall of the tail end of the four-stage hydraulic cylinder is threadedly sleeved with the inner wall of the head end of the lower thrust ring, the inner wall of the tail end of the lower thrust ring is sleeved with the outer wall of the lower center tube, and the tail end of the lower thrust ring is abutted against the head end of the second sealing tube;

[0039] The fourth anti-return component is a lower rubber cylinder locking ring, the inner wall of the lower rubber cylinder locking ring is connected to the outer wall of the center tube through a one-way serrated thread, the outer wall of the lower rubber cylinder locking ring is connected to the inner wall of the head end of the lower thrust ring through a one-way serrated thread, and the lower rubber cylinder locking ring is spaced apart from the tail end of the fourth-stage hydraulic cylinder.

[0040] Furthermore, the slip adopts a cylindrical structure, and the outer walls at both ends of the slip are axially arrayed with a plurality of annular teeth, and both ends of the slip are provided with a plurality of dividing grooves arranged in a circumferential array and extending axially, and the dividing grooves at both ends of the slip are staggered.

[0041] A method for using the above-mentioned energy storage injection and production packer also includes: an injection and production pipe, a landing joint pipe, a shear ball sleeve, and a guide pipe, wherein the shear ball sleeve is internally sleeved with a sealing sleeve; the method for using includes the following steps:

[0042] The injection and production pipe, the packer, the landing joint pipe, the shear ball casing, and the guide pipe are sealed and threaded in sequence to form an integrated device, and the integrated device is lowered into the inner cavity of the wellbore;

[0043] A steel ball matched with the sealing sleeve is put into the injection and production pipe to seal the inner cavity of the shear ball sleeve, and a hydraulic medium is injected into the inner cavity of the overall device and pressure is applied to make the hydraulic medium enter the compression inner cavity of the second compression kit and the third compression kit, driving the output ends of the second compression kit and the third compression kit to squeeze the slips until the anchoring operation is completed;

[0044] Continue to pressurize until the steel ball and the sealing sleeve built into the shear ball seat fall to the bottom of the well, completing the installation of the entire device in the wellbore cavity;

[0045] When the whole device needs to be recovered, the cutting tool is lowered to cut the inner tube side wall between the tail end of the middle annular block and the anti-return component to release the slip anchoring operation;

[0046] Lift up the entire device to complete the recovery operation.

[0047] Compared with the prior art, the embodiments of the present invention have at least the following advantages:

[0048] The energy storage injection and production seal and the use method of the present invention drive the second compression kit and the third compression kit in the inner cavity of the wellbore to squeeze the slips from both ends at the same time, without interfering with each other and assisting each other, so that the slips can expand to form an anchor with the inner wall of the wellbore, thereby ensuring the stability of the synchronous outward expansion deformation of the two ends of the slips; and the rapid unsealing of the slips is achieved by the method of inner tube cutting, thereby meeting the operational requirements of rapid recovery of the seal as a whole, avoiding damage to the inner wall of the wellbore, ensuring the safety of the recovery operation, and achieving the accuracy of the activity state of the compression kit by liquid inlet drive.

[0049] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 The schematic diagram of the energy storage injection and production packer in the embodiment of the present invention is shown. Figure 1 ;

[0052] Figure 2 The schematic diagram of the energy storage injection and production packer in the embodiment of the present invention is shown. Figure 2 ;

[0053] Figure 3 A partial enlarged schematic diagram of the energy storage injection and production packer in an embodiment of the present invention is shown. Figure 1 ;

[0054] Figure 4 A partial enlarged schematic diagram of the energy storage injection and production packer in an embodiment of the present invention is shown. Figure 2 ;

[0055] Figure 5 A partial enlarged schematic diagram of the energy storage injection and production packer in an embodiment of the present invention is shown. Figure 3 ;

[0056] Figure 6 A partial enlarged schematic diagram of the energy storage injection and production packer in an embodiment of the present invention is shown. Figure 4 ;

[0057] Figure 7 A partial enlarged schematic diagram of the energy storage injection and production packer in an embodiment of the present invention is shown. Figure 5 ;

[0058] Figure 8 A schematic diagram of the structure of the slips in an embodiment of the present invention is shown;

[0059] Fig. 9 A schematic diagram of the structure of a bushing in an embodiment of the present invention is shown;

[0060] Fig.10 An enlarged schematic diagram of structure A in an embodiment of the present invention is shown;

[0061] Fig.11 An enlarged schematic diagram of structure B in an embodiment of the present invention is shown;

[0062] Fig.12 shows an enlarged cross-sectional schematic diagram of structure C in an embodiment of the present invention;

[0063] Fig.13 The schematic diagram of the use of the energy storage injection and production packer in the embodiment of the present invention is shown. Figure 1 ;

[0064] Fig.14 The schematic diagram of the use of the energy storage injection and production packer in the embodiment of the present invention is shown. Figure 2 .

[0065] In the figure, 1, inner tube; 101, coupling; 102, upper center tube; 103, upper locking tube; 104, lower locking tube; 105, lower center tube; 2, inner bushing assembly; 201, bushing; 202, guide sleeve; 203, first latch member; 204, first slide groove; 205, first protrusion; 3, first sealing tube; 4, upper thrust ring; 5, upper rubber tube locking ring; 6, first hydraulic cylinder; 7, first piston; 8, second hydraulic cylinder; 9, second piston; 10, upper slip locking ring; 11, upper cone; 12, slip; 1201, first expansion cone surface; 1202, second expansion cone surface; 1203, third expansion cone surface; 13, lower cone; 14, connecting sleeve; 15, third piston; 16, lower slip Wafer lock ring; 17, three-stage hydraulic cylinder; 18, second slide groove; 19, second protrusion; 20, four-stage piston; 21, four-stage hydraulic cylinder; 22, lower rubber cylinder lock ring; 23, lower thrust ring; 24, second rubber sealing cylinder; 25, unsealing cylinder; 26, annular outer protrusion; 27, second latch; 28, annular groove; 29, first through hole; 30, second through hole; 31, third through hole; 32, fourth through hole; 33, third slide groove; 34, third protrusion; 100, injection and production pipe; 200, packer; 300, landing joint pipe; 400, shear ball sleeve; 500, guide pipe; 600, first compression kit, 700, second compression kit; 800, third compression kit; 900, fourth compression kit. DETAILED DESCRIPTION

[0066] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0067] The present invention provides an energy storage injection and production packer. Figure 1 The schematic diagram of the energy storage injection and production packer in the embodiment of the present invention is shown. Figure 1 ,refer to Figure 1 , Figure 2 and Fig.10 The energy storage injection and production packer comprises: an inner tube 1, a first component which is sequentially sleeved on the outer wall of the inner tube 1 and butted at the head and tail ends, a second compression kit 700, slips 12, a third compression kit 800, and a second component;

[0068] The tail end of the third compression kit 800 is slidably sleeved with the head end of the second component, the side wall of the head end of the second component is provided with an axially extending second slide groove 18, the side wall of the tail end of the third compression kit 800 is provided with a second protrusion 19 slidably connected with the second slide groove 18, and the side wall of the inner tube 1 is provided with a through hole communicating with the compression inner cavity of the second compression kit 700 and the third compression kit 800;

[0069] Inject hydraulic medium into the compression inner cavity of the second compression kit 700 and the third compression kit 800 to drive the output ends of the second compression kit 700 and the third compression kit 800 to squeeze the front and rear ends of the slips 12, so that the slips 12 are in an operating state with both ends expanded outward, and the outer wall of the inner tube 1 is also sleeved with a second non-return component and a third non-return component for preventing the output end of the second compression kit 700 and the output end of the third compression kit 800 from resetting;

[0070] The inner wall of the third compression kit 800 is provided with an annular groove 28 for accommodating the third non-return component, and the outer wall of the inner tube 1 is provided with a middle annular block located in the inner cavity of the annular groove 28, the tail end of the middle annular block faces the third non-return component and retains a predetermined distance with the third non-return component. After the side wall of the inner tube 1 between the tail end of the middle annular block and the third non-return component is cut, the inner tube 1 is divided into an upper half of the inner tube 1 and a lower half of the inner tube 1 by the cut annular tangent line. At this time, the outer wall of the upper half of the inner tube 1 is sleeved with the first component, the second compression kit 700, and the slip 12, and the lower half of the inner tube 1 The outer wall of the inner tube 1 is sleeved with the third compression kit 800 and the second component, and the relative positions of the first component, the second component and the inner tube 1 remain fixed. The second compression kit 700, the cava 12 and the third compression kit 800 are all slidably sleeved on the outer wall of the inner tube 1. Correspondingly, the third compression kit 800, the lower half of the inner tube 1 and the second component move downward until the inner wall of the annular groove 28 abuts against the head end of the middle annular block, and the inner wall of the end of the second slide groove 18 away from the cava 12 abuts against the second protrusion 19, and the cava 12 recovers from the operating state to the initial state.

[0071] It should be noted that during the oilfield construction process, there are corresponding special mechanical cutters or hydraulic cutters. The mechanical cutters achieve cutting by rotating the pipe column, and the hydraulic cutters achieve cutting by pressure. This is a well-known technology for those skilled in the art and will not be explained in detail here.

[0072] The injection-production packer proposed in the present application drives the second compression kit 700 and the third compression kit 800 in the inner cavity of the wellbore to squeeze the cava 12 from both ends at the same time, without interfering with each other and assisting each other, so that the cava 12 can expand to form an anchor with the inner wall of the wellbore, thereby ensuring the stability of the synchronous outward expansion deformation of the two ends of the cava 12; and the rapid unsealing of the cava 12 is achieved by cutting the inner tube 1, thereby meeting the operational requirements of rapid recovery of the entire packer, avoiding damage to the inner wall of the wellbore, ensuring the safety of the recovery operation, and achieving the accuracy of the activity state of the compression kit through liquid driving.

[0073] exist Figure 3 In the example shown, the first component includes an inner sleeve assembly 2, a first sealing tube 3, and a first compression kit 600, which are sequentially sleeved on the outer wall of the inner tube 1 and butted at the head and tail ends, and the tail end of the first compression kit 600 is butted with the head end of the second compression kit 700; when the first compression kit 600 is driven, the output end of the first compression kit 600 squeezes the first sealing tube 3 to move toward the side of the inner sleeve assembly 2, and the inner sleeve assembly 2 generates a reverse force on the first sealing tube 3, causing the first sealing tube 3 to deform and change from an initial state to an operating state of sealing the inner wall of the wellbore, thereby realizing the first layer of sealing operation on the inner wall of the wellbore.

[0074] A first non-return component is sleeved on the outer wall of the inner tube 1, which is used to prevent the output end of the first compression kit 600 from resetting. After the output end of the first compression kit 600 pushes the first sealing tube 3 to deform, the first non-return component prevents the output end of the first compression kit 600 from resetting, so that the first sealing tube 3 maintains the operating state after deformation, avoids the first sealing tube 3 from returning to the initial state, and improves the stability of the first layer of sealing operation.

[0075] Correspondingly, in Figure 7 In the example shown, the second component includes a fourth compression kit 900, a second sealing tube 24, and a lower unsealing component, which are sequentially sleeved on the outer wall of the inner tube 1 and butted at the head and tail ends, and the head end of the fourth compression kit 900 is butted with the tail end of the third compression kit 800; when the fourth compression kit 900 is driven, the output end of the fourth compression kit 900 squeezes the second sealing tube 24 to move toward the side of the lower unsealing component, and the lower unsealing component generates a reverse force on the second sealing tube 24, causing the second sealing tube 24 to deform into an operating state of sealing the inner wall of the wellbore, thereby realizing a second layer of sealing operation on the inner wall of the wellbore.

[0076] At the same time, a fourth non-return component is sleeved on the outer wall of the inner tube 1, which is used to prevent the output end of the fourth compression kit 900 from resetting. After the output end of the fourth compression kit 900 pushes the second sealing tube 24 to deform, the fourth non-return component prevents the output end of the fourth compression kit 900 from resetting, so that the second sealing tube 24 maintains the working state after deformation, avoids the second sealing tube 24 from returning to the initial state, and improves the stability of the second layer of sealing operation.

[0077] On the basis of setting the first sealing tube 3 and the second sealing tube 24, the upper and lower layers of sealing function of the sealer are realized. Compared with the traditional single sealing layer, the sealing effect of the device of the present application is greatly improved, and by correspondingly setting two independent first compression kits 600 and fourth compression kits 900, the problem of a single failure caused by a shared locking method causing all failures is avoided.

[0078] refer to Figure 7 The lower unsealing component includes an unsealing cylinder 25, an annular outer protrusion 26 on the outer wall of the inner tube 1, the inner wall of the tail end of the unsealing cylinder 25 is sleeved with the outer wall of the annular outer protrusion 26 and is connected to a cut-off pin through a second latch 27, and an annular inner protrusion is arranged at an interval on the inner wall of the head end of the unsealing cylinder 25. The inner wall of the annular inner protrusion is slidably sleeved with the outer wall of the inner tube 1, and the head end of the unsealing cylinder 25 is butt-jointed with the tail end of the second sealing cylinder 24.

[0079] It should be noted that, in the present embodiment, the shear force required to cut off the second latch member 27 is greater than the deformation force of the second sealing tube 24 in the operating state, so as to avoid the second latch member 27 being cut off during the deformation of the second sealing tube 24 and thus affecting the sealing effect of the second sealing tube 24 on the inner wall of the wellbore.

[0080] After the side wall of the inner tube 1 between the tail end of the middle ring block and the third non-return component is cut, the inner tube 1 is divided into an upper half and a lower half, the inner wall of the annular groove 28 abuts against the head end of the middle ring block, and the upper half of the inner tube 1 and the lower half of the inner tube 1 are indirectly connected through the second slide groove 18 and the second protrusion 19. At this time, the cava 12 recovers from the operating state to the initial state. The device of the present application is lifted by a ground lifting device. During this process, the upward force transmitted to the inner tube 1 by the ground lifting device will be further transmitted to the second latch member 27 and the unsealing tube 25. The downward static friction force generated by the second sealing tube 24 and the inner wall of the wellbore after deformation will be transmitted to the second latch member 27. With the increase of the lifting force, the force acting on the second latch member 27 by the unsealing tube 25 and the inner tube 1 gradually increases. When the lifting force is greater than the sum of the shear force required for the second latch member 27 to be cut off and the weight of the device itself, and is less than the friction between the deformed second sealing tube 24 and the inner wall of the wellbore, the second latch member 27 is cut off, and the unsealing tube 25 moves to the side of the annular outer protrusion 26 until the annular outer protrusion 26 and the annular inner protrusion form mutual abutment; at the same time, because the position of the unsealing tube 25 changes, the relative distance between the unsealing tube 25 and the fourth compression kit 900 is increased, so that the second sealing tube 24 is restored from the operating state to the initial state, and the blockage is released.

[0081] In addition, if the friction between the second sealing tube 24 and the inner wall of the wellbore is small after deformation and is smaller than the shear force required to cut off the second latch member 27, there is no need to consider the operating requirements of the second sealing tube 24 to recover from the operating state to the initial state, and the lifting and recovery device operation can be directly carried out.

[0082] Correspondingly, in Figure 3 and Fig. 9 In the example shown, the inner bushing assembly 2 includes a bushing 201 and a guide sleeve 202;

[0083] The inner wall of the bushing 201 is fixedly sleeved with the outer wall of the inner tube 1, and the outer wall of the bushing 201 is slidably sleeved with the inner wall of the guide sleeve 202, and the guide sleeve 202 and the bushing 201 are connected by a first latch 203 to form a cut-off pin connection, and a first slide groove 204 extending in the axial direction is provided on the side wall of the guide sleeve 202, and a first protrusion 205 inserted into the first slide groove 204 and slidably sleeved with the first slide groove 204 is provided on the outer wall of the bushing 201, and the inner wall of one end of the first slide groove 204 away from the first sealing tube 3 maintains a predetermined distance with the first protrusion 205, and the tail end of the guide sleeve 202 abuts against the head end of the first sealing tube 3;

[0084] By the same token, it should be noted that, in the present embodiment, the shear force required to cut off the first latch member 203 is greater than the deformation force of the first sealing tube 3 in the operating state, so as to avoid the first latch member 203 being cut off during the deformation of the first sealing tube 3 and thus affecting the sealing effect of the first sealing tube 3 on the inner wall of the wellbore.

[0085] After the side wall of the inner tube 1 between the tail end of the middle ring block and the third non-return component is cut, the inner tube 1 is divided into an upper half and a lower half, and the inner wall of the annular groove 28 is in contact with the head end of the middle ring block. The upper half of the inner tube 1 and the lower half of the inner tube 1 are indirectly connected through the second slide groove 18 and the second protrusion 19. At this time, the cava 12 is restored from the operating state to the initial state. The device of the present application is lowered by ground lifting equipment. During this process, the deformed first sealing tube 3 generates static friction with the inner wall of the wellbore. Combined with the gravity of the entire packer, the upper center pipe 102 applies a downward force to the bushing 201 and the guide sleeve 202 through the first latch 203. The deformed first sealing tube 3 will apply an upward force to the first latch 203 due to the friction with the inner wall of the wellbore. When the friction between the deformed first sealing tube 3 and the inner wall of the wellbore is greater than the shear force required for the first latch 203 to be cut off, along with the increase in the lowering force, when the upper center pipe 102 gives When the downward force of the first latch member 203 is greater than the shear force required for the first latch member 203 to be cut off and is less than the friction force between the deformed first sealing tube 3 and the inner wall of the wellbore, the first latch member 203 is cut off, and the guide sleeve 202 moves to the side away from the first sealing tube 3 until the first protrusion 205 and the inner wall of the end of the first slide groove 204 away from the first sealing tube 3 form mutual abutment; at the same time, due to the position change of the guide sleeve 202, the relative distance between the guide sleeve 202 and the first compression kit 600 is increased, so that the first sealing tube 3 is restored to the initial state from the operating state, and the blockage is released.

[0086] In addition, if the friction between the first sealing tube 3 and the inner wall of the wellbore is small after deformation and is smaller than the shear force required to cut off the first latch member 203, there is no need to consider the operating requirements of the second sealing tube 24 to recover from the operating state to the initial state, and the lifting and recovery device operation can be directly carried out.

[0087] In this embodiment, reference Figure 3-7 The inner tube 1 includes a coupling 101, an upper center tube 102, an upper locking tube 103, a lower locking tube 104, and a lower center tube 105, which are sleeved in sequence at the head and tail ends;

[0088] The outer wall of the upper central tube 102 is sleeved with the inner liner assembly 2, the first sealing tube 3, and the first compression kit 600;

[0089] The outer wall of the upper locking tube 103 is sleeved with the second compression kit 700 and the slip 12;

[0090] The outer wall of the lower locking tube 104 is sleeved with the third compression kit 800;

[0091] The outer wall of the lower central tube 105 is sleeved with the fourth compression kit 900, the second sealing rubber tube 24, and the lower unsealing component.

[0092] By decomposing the inner tube 1 into five components, namely, the coupling 101, the upper center tube 102, the upper locking tube 103, the lower locking tube 104, and the lower center tube 105, the convenience of the device of the present application during transportation, recycling, and installation is greatly improved. In addition, during the recycling process of the device, only the lower locking tube 104 needs to be cut, which will not affect other components, so that other components can be reused, which directly reduces the use and maintenance costs of the device of the present application.

[0093] In order to further illustrate the specific structure of the device of the present application, refer to Figure 3 The outer wall of the tail end of the upper center tube 102 is provided with a thread, and the upper locking tube 103 includes a ring sleeve portion and a tube body portion connected at the head and tail ends. The inner diameter and outer diameter of the tube body portion are consistent with the inner diameter and outer diameter of the upper center tube 102, and the inner diameter of the ring sleeve portion is consistent with the outer diameter of the upper center tube 102. The inner wall of the ring sleeve portion is provided with a thread adapted to the tail end of the upper center tube 102, so as to realize a threaded socket connection between the outer wall of the tail end of the upper center tube 102 and the inner wall of the head end of the upper locking tube 103.

[0094] Taking the head end of the inner tube 1 as the starting end, the first compression kit 600 includes an upper thrust ring 4, an upper rubber cylinder lock ring 5, a first-stage hydraulic cylinder 6, and a first-stage piston 7 which are sequentially sleeved on the outer wall of the inner tube 1;

[0095] The head end of the upper thrust ring 4 is sleeved on the outer wall of the upper center tube 102, and the head end of the upper thrust ring 4 is in contact with the first-level composite sealing rubber tube 07. The inner wall of the tail end of the upper thrust ring 4 is threadedly sleeved on the outer wall of the head end of the first-level hydraulic cylinder 6, and the inner wall of the tail end of the first-level hydraulic cylinder 6 is sealed and sleeved with the outer wall of the head end of the upper locking tube 103;

[0096] The inner wall of the tail end of the first hydraulic cylinder 6 is also sealed with a first piston 7 spaced apart from the head end of the upper locking tube 103, the inner wall of the first piston 7 is sealed with the outer wall of the upper center tube 102, the end wall of the tail end of the first piston 7, the end wall of the head end of the upper locking tube 103, the inner wall of the tail end of the first hydraulic cylinder 6 and the outer wall of the upper center tube 102 form a compression inner cavity of the first compression kit 600, and a first through hole 29 connected to the compression inner cavity of the first compression kit 600 is opened on the side wall of the inner tube 1;

[0097] The first non-return component is an upper rubber tube lock ring 5, the inner wall of the upper rubber tube lock ring 5 is sleeved with the outer wall of the upper center tube 102 through a one-way sawtooth thread, and the outer wall of the upper rubber tube lock ring 5 is sleeved with the inner wall of the tail end of the upper thrust ring 4 through a one-way sawtooth thread;

[0098] When a liquid medium with a certain pressure is poured into the inner cavity of the inner tube 1, the liquid medium enters the compression inner cavity of the first compression kit 600 through the first through hole 29, and acts on the end wall of the tail end of the first piston 7, driving the first piston 7, the first hydraulic cylinder 6, the upper thrust ring 4, and the upper rubber tube locking ring 5 to move synchronously toward the side of the first rubber sealing tube 3 to squeeze the first rubber sealing tube 3; and under the action of the upper rubber tube locking ring 5, the upper rubber tube locking ring 5 and the upper thrust ring 4 can only move toward the side of the first rubber sealing tube 3 and cannot move away from the first rubber sealing tube 3, thereby realizing continuous squeezing of the first rubber sealing tube 3.

[0099] During the recovery operation, the packer is lowered using ground lifting equipment. Since the deformed first sealing tube 3 generates static friction with the inner wall of the wellbore, along with the increase of the lowering force, combined with the gravity of the packer as a whole, the upper center pipe 102 applies a downward force to the bushing 201 and the guide sleeve 202 through the first latch member 203. However, the deformed first sealing tube 3 will apply an upward force to the first latch member 203 due to the friction with the inner wall of the wellbore. Along with the further increase of the lowering force, when the downward force applied by the upper center pipe 102 to the first latch member 203 is greater than the shear force required for the first latch member 203 to be cut off and is less than the friction between the deformed first sealing tube 3 and the inner wall of the wellbore, the first latch member 203 is cut off, and the guide sleeve 202 moves away from the first sealing tube 3, so that the first sealing tube 3 is restored from the operating state to the initial state, thereby achieving the release of the blockage.

[0100] Corresponding, reference Figure 4 and Fig.12 The second compression kit 700 includes a secondary hydraulic cylinder 8, a secondary piston 9, an upper slip lock ring 10, and an upper cone 11 which are sequentially sleeved on the outer wall of the inner tube 1;

[0101] The inner wall of the head end of the secondary hydraulic cylinder 8 is sealed and sleeved with the outer wall of the upper locking tube 103, the head end of the secondary hydraulic cylinder 8 is connected to the tail end of the first compression kit 600, the inner wall of the tail end of the secondary hydraulic cylinder 8 is sealed and sleeved with the outer wall of the head end of the secondary piston 9, the inner wall of the head end of the secondary piston 9 is sealed and sleeved with the outer wall of the upper locking tube 103, and the head end of the secondary piston 9 is spaced apart from the tail end of the secondary hydraulic cylinder 8, the inner wall of the tail end of the secondary hydraulic cylinder 8, the end wall of the head end of the secondary piston 9, and the outer wall of the upper locking tube 103 jointly form the compression inner cavity of the second compression kit 700, and a second through hole 30 connected to the compression inner cavity of the second compression kit 700 is opened on the side wall of the inner tube 1;

[0102] The inner wall of the front end of the secondary piston 9 is sleeved with the outer wall of the upper locking tube 103, the inner wall of the rear end of the secondary piston 9 is threadedly sleeved with the outer wall of the front end of the upper cone 11, the inner wall of the upper cone 11 is sleeved with the outer wall of the upper locking tube 103, and the rear end of the upper cone 11 and the front end of the slip 12 form an inner cone surface against each other;

[0103] The second non-return component is an upper cava locking ring 10. The inner wall of the rear end of the secondary piston 9 is also connected to the outer wall of the upper cava locking ring 10 through a one-way serrated thread. The inner wall of the upper cava locking ring 10 is connected to the outer wall of the upper locking tube 103 through a one-way serrated thread. The outer wall of the upper cava locking ring 10 is connected to the inner wall of the rear end of the secondary piston 9 through a one-way serrated thread and is spaced apart from the head end of the upper cone 11.

[0104] When a liquid medium with a certain pressure is poured into the inner cavity of the inner tube 1, the liquid medium enters the compression inner cavity of the second compression kit 700 through the second through hole 30, and acts on the end wall of the front end of the secondary piston 9, driving the secondary piston 9, the upper cava locking ring 10, and the upper cone 11 to move synchronously toward the side of the cava 12 to squeeze the cava 12; and under the action of the upper cava locking ring 10, the secondary piston 9, the upper cava locking ring 10, and the upper cone 11 can only move toward the side of the cava 12 and cannot move away from the cava 12, thereby realizing continuous squeezing of the cava 12.

[0105] It should be noted that in Fig.12 In the example shown, the inner and outer walls of the upper cava locking ring 10 are provided with one-way serrations in the same direction, wherein the outer wall of the upper locking tube 103 and the secondary piston 9 are also adapted to be provided with one-way serrations, so that the upper cava locking ring 10 can only move to the right relative to the upper locking tube 103, and the first non-return component, the third non-return component, and the fourth non-return component in the present application are all consistent with the structure of the upper cava locking ring 10, and the serrations of the upper cava locking ring 10 and the fourth non-return component are in the same direction, and the serrations of the first non-return component and the third non-return component are in the same direction.

[0106] Corresponding, reference Figure 5 , Figure 6 and Fig.11 , the inner diameter and outer diameter of the upper locking tube 103 and the lower locking tube 104 are consistent, and the middle annular block is a connecting sleeve 14, the inner diameter of the connecting sleeve 14 is consistent with the outer diameter of the upper locking tube 103 and the lower locking tube 104, and the inner walls of the head and tail ends of the connecting sleeve 14 are respectively connected with the outer wall of the tail end of the upper locking tube 103 and the outer wall of the head end of the lower locking tube 104 to form a threaded sealing sleeve;

[0107] The third compression kit 800 comprises a lower cone 13, a third-stage piston 15, a lower slip ring 16, and a third-stage hydraulic cylinder 17 which are sequentially sleeved on the outer wall of the inner tube 1, wherein the third non-return component is a slip ring 35;

[0108] The lower cone 13 is sleeved on the outer wall of the upper locking tube 103, and the head end of the lower cone 13 and the tail end of the slip 12 form an inner cone surface against each other, the outer wall of the tail end of the lower cone 13 is sleeved with the inner wall of the head end of the three-stage piston 15 by thread, and the inner wall of the head end of the three-stage piston 15 is provided with an annular groove 28 for accommodating the connecting sleeve 14 and the lower slip locking ring 16, the lower slip locking ring 16 and the lower cone 13 are respectively located on both sides of the connecting sleeve 14 and are spaced by a predetermined distance, the inner wall of the lower slip locking ring 16 is sleeved with the outer wall of the lower locking tube 104 by a one-way sawtooth thread, and the outer wall of the lower slip locking ring 16 is sleeved with the inner wall of the annular groove 28 of the three-stage piston 15 by a one-way sawtooth thread;

[0109] The inner wall of the rear end of the tertiary piston 15 is sealingly sleeved with the outer wall of the lower locking tube 104, the outer wall of the rear end of the tertiary piston 15 is sealingly sleeved with the inner wall of the head end of the tertiary hydraulic cylinder 17, the inner wall of the rear end of the tertiary hydraulic cylinder 17 is sealingly sleeved with the outer wall of the lower locking tube 104, and the rear end of the tertiary piston 15 and the rear end of the tertiary hydraulic cylinder 17 are arranged at intervals, the rear end of the tertiary hydraulic cylinder 17 is connected to the head end of the third compression kit 800, the inner wall of the head end of the tertiary hydraulic cylinder 17, the end wall of the rear end of the tertiary piston 15, and the outer wall of the lower locking tube 104 jointly form the compression inner cavity of the third compression kit 800, and a third through hole 31 connected to the compression inner cavity of the third compression kit 800 is opened on the side wall of the inner tube 1.

[0110] When a liquid medium with a certain pressure is poured into the inner cavity of the inner tube 1, the liquid medium enters the compression inner cavity of the third compression kit 800 through the third through hole 31, and acts on the end wall of the tail end of the tertiary piston 15, driving the tertiary piston 15, the lower cava locking ring 16, and the lower cone 13 to move synchronously toward the side of the cava 12 to squeeze the cava 12; and under the action of the lower cava locking ring 16, the tertiary piston 15, the lower cava locking ring 16, and the lower cone 13 can only move toward the side of the cava 12 and cannot move away from the cava 12, thereby realizing continuous squeezing of the cava 12.

[0111] A second chute 18 extending axially is provided on the side wall of the head end of the three-stage hydraulic cylinder 17, and a second convex block 19 inserted into and slidably connected to the second chute 18 is provided on the outer wall of the tail end of the three-stage piston 15, and a predetermined distance is set between the second convex block 19 and the inner wall of the second chute 18 near the slip 12;

[0112] A third slide groove 33 extending axially is provided on the side wall of the tail end of the third-stage hydraulic cylinder 17, and a third protrusion 34 slidably connected to the third slide groove 33 is provided on the outer wall of the tail end of the lower locking tube 104. A predetermined distance is set between the third protrusion 34 and the inner wall of the third slide groove 33 close to the cava 12.

[0113] During the device recovery operation, the coupling 101 is connected by using ground hoisting equipment to apply a lifting force to the inner tube 1 as a whole. After the side wall of the lower locking tube 104 between the lower slip lock ring 16 and the connecting sleeve 14 is cut, the lower locking tube 104 is divided into an upper half of the lower locking tube 104 and a lower half of the lower locking tube 104 with the cutting line as the boundary. The upper half of the lower locking tube 104 is threadedly connected with the connecting sleeve 14 to obtain the lifting force applied by the ground hoisting equipment. The lower half of the lower locking tube 104 cannot directly obtain the lifting force applied by the ground hoisting equipment from the upper half of the lower locking tube 104 because it is separated from the upper half of the lower locking tube 104.

[0114] Under the action of gravity, the cava 12, the lower cone 13, the three-stage piston 15, the lower cava locking ring 16, the lower half of the lower locking tube 104, and the three-stage hydraulic cylinder 17 will all move downward until the second protrusion 19 and the inner wall of the second slide groove 18 close to the cava 12 form abutment, and the position of the lower cava locking ring 16 changes, so that the lower cone 13 removes the squeeze on the cava 12, so that the cava 12 returns to the initial state from the operating state, and releases the expansion anchoring to the inner wall of the wellbore. At the same time, the third protrusion 34 forms an abutment with the inner wall of the third slide groove 33 on the side close to the cava 12, and the front end of the connecting sleeve 14 also forms an abutment with the rear end of the lower cone 13, and on the basis of the threaded connection between the outer wall of the rear end of the lower cone 13 and the inner wall of the front end of the three-stage piston 15, the connecting sleeve 14 provides an upward force for the lower cone 13, the three-stage piston 15, the three-stage hydraulic cylinder 17, the lower half of the lower locking tube 104, the lower center tube 105 and the lower center tube 105.

[0115] Corresponding, reference Figure 7 The outer wall of the head end of the lower center tube 105 is provided with a thread, and the lower locking tube 104 includes a tube body portion and a ring sleeve portion connected at the head and tail ends. The inner diameter and outer diameter of the tube body portion are consistent with the inner diameter and outer diameter of the lower center tube 105, and the inner diameter of the ring sleeve portion is consistent with the outer diameter of the lower center tube 105. The inner wall of the ring sleeve portion is provided with a thread adapted to the head end of the lower center tube 105, so as to realize the threaded sealing connection between the inner wall of the tail end of the lower locking tube 104 and the outer wall of the head end of the lower center tube 105.

[0116] The fourth compression kit 900 includes a four-stage piston 20, a four-stage hydraulic cylinder 21, a lower rubber cylinder lock ring 22, and a lower thrust ring 23 which are sequentially sleeved on the outer wall of the inner tube 1;

[0117] The inner wall of the head end of the four-stage hydraulic cylinder 21 is sealed and sleeved with the outer wall of the tail end of the lower locking tube 104, and the inner wall of the head end of the four-stage hydraulic cylinder 21 is also sealed and sleeved with the outer wall of the four-stage piston 20. The outer wall of the four-stage piston 20 is sealed and sleeved with the inner wall of the head end of the four-stage hydraulic cylinder 21 and is arranged at intervals with the tail end of the lower locking tube 104. The inner wall of the four-stage piston 20 is sealed and sleeved with the outer wall of the lower center tube 105. The end wall of the head end of the four-stage piston 20, the outer wall of the lower center tube 105, the end wall of the tail end of the lower locking tube 104 and the inner wall of the head end of the four-stage hydraulic cylinder 21 together form a compression inner cavity of the fourth compression kit 900, and a fourth through hole 32 connected to the compression inner cavity of the fourth compression kit 900 is opened on the side wall of the inner tube 1;

[0118] The outer wall of the tail end of the four-stage hydraulic cylinder 21 is threadedly sleeved with the inner wall of the head end of the lower thrust ring 23, and the inner wall of the tail end of the lower thrust ring 23 is sleeved with the outer wall of the lower center tube 105, and the tail end of the lower thrust ring 23 is in contact with the head end of the second sealing tube 24;

[0119] The fourth anti-return component is the lower rubber cylinder locking ring 22, the inner wall of the lower rubber cylinder locking ring 22 is connected to the outer wall of the center tube 53 through a one-way serrated thread, the outer wall of the lower rubber cylinder locking ring 22 is connected to the inner wall of the head end of the lower thrust ring 23 through a one-way serrated thread, and the lower rubber cylinder locking ring 22 is spaced apart from the tail end of the fourth-stage hydraulic cylinder 21.

[0120] When a liquid medium with a certain pressure is poured into the inner cavity of the inner tube 1, the liquid medium enters the compression inner cavity of the fourth compression kit 900 through the fourth through hole 32, and acts on the end wall of the front end of the fourth-stage piston 20, driving the fourth-stage piston 20, the fourth-stage hydraulic cylinder 21, the lower rubber cylinder locking ring 22, and the lower thrust ring 23 to move synchronously toward the second rubber sealing cylinder 24 to squeeze the second rubber sealing cylinder 24; and under the action of the lower rubber cylinder locking ring 22, the lower rubber cylinder locking ring 22 and the lower thrust ring 23 can only move toward the second rubber sealing cylinder 24, and cannot move away from the second rubber sealing cylinder 24, thereby realizing continuous squeezing of the second rubber sealing cylinder 24.

[0121] During the device recovery operation, the device of the present application is lifted up, and the upward force transmitted to the lower center tube 105 by the ground lifting equipment will be further transmitted to the second latch member 27 and the unsealing tube 25. At this time, there is a downward friction force between the deformed second sealing tube 24 and the inner wall of the wellbore. With the increase of the lifting force, the force acting on the second latch member 27 by the unsealing tube 25 and the lower center tube 105 gradually increases. When the lifting force is greater than the sum of the shear force required for the second latch member 27 to be cut off and the overall gravity of the device, and is less than the friction force between the deformed second sealing tube 24 and the inner wall of the wellbore, the second latch member 27 is cut off, and the unsealing tube 25 moves away from the second sealing tube 24, so that the second sealing tube 24 is restored to the initial state from the operating state, thereby realizing the unblocking.

[0122] In the present embodiment, an annular cavity is provided between the inner wall of the upper end of the secondary hydraulic cylinder 8 and the outer wall of the upper locking tube 103, and between the inner wall of the lower end of the tertiary hydraulic cylinder 17 and the outer wall of the lower locking tube 104. Gas pre-storage is achieved by providing the cavity. When the position of the secondary hydraulic cylinder 8 and the tertiary hydraulic cylinder 17 changes, the liquid in the gap can be discharged easily to prevent the formation of liquid lock, which in turn hinders the operation of the components.

[0123] Among them, Figure 8 In the embodiment, the cava 12 adopts a cylindrical cage structure, and the outer walls at both ends of the cava 12 are arranged with a plurality of annular teeth in an axial array, and both ends of the cava 12 are provided with a plurality of dividing grooves arranged in a circumferential array and extending axially, and the dividing grooves at both ends of the cava 12 are staggered. In this embodiment, the cava 12 is made of elastic metal material, and alloy steel is used for support, and the cava 12 adopts a petal structure, which has certain elastic properties after heat treatment and production. The dividing grooves on both sides facilitate the outward extension of the two ends of the cava 12, and under the action of the annular teeth, it forms a tight anchor with the inner wall of the wellbore, ensuring the stability and firmness of the device placed in the wellbore.

[0124] In addition, in this embodiment, the outer walls of the front and rear ends of the slip 12 are detachably connected to the outer wall of the inner tube 1 by cutting pins, so as to preliminarily fix the installation position of the slip 12. Furthermore, the specifications of the cutting pins installed on the outer walls of the front and rear ends of the slip 12 are different, and the specifications of the cutting pins installed on the outer wall of the front end of the slip 12 are larger than the specifications of the cutting pins installed on the outer wall of the rear end of the slip 12, so that the cutting pins at the rear end of the slip 12 are cut first, and the cutting pins at the front end of the slip 12 are cut first, further limiting the movement sequence of the two ends of the slip 12 expanding outward.

[0125] In addition, three expansion cones are provided inside both ends of the cava 12, namely the first expansion cone 1201, the second expansion cone 1202 and the third expansion cone 1203. During the expansion process of the cava 12, the third expansion cone 1203 first contacts the upper cone 11 and the lower cone 13, and then contacts the second expansion cone 1202, and finally contacts the first expansion cone 1201. The order of contact ensures that the cava 12 can expand outward better to achieve sealing and thus improve the anchoring effect.

[0126] During actual use, liquid medium is injected into the inner cavity of the inner tube 1, so that the liquid medium enters the compression inner cavity of the second compression kit 700, the second compression kit 700, the third compression kit 800 and the fourth compression kit 900 respectively through the first through hole 29, the second through hole 30, the third through hole 31 and the fourth through hole 32, and drives the first compression kit 600 and the inner liner assembly 2 to compress the first sealing tube 3 to achieve expansion sealing, drives the second compression kit 700 and the third compression kit 800 to compress the cava 12 to achieve expansion anchoring, and drives the fourth compression kit 900 and the lower unsealing assembly to compress the second sealing tube 24 to achieve expansion sealing; completes the operation requirements of the packer to seal the inner wall of the wellbore.

[0127] During the device recovery operation, the coupling 101 is connected by using ground hoisting equipment to apply a lifting force to the inner tube 1 as a whole, and the side wall of the lower locking tube 104 between the lower slip lock ring 16 and the connecting sleeve 14 is cut, so that the lower locking tube 104 is divided into an upper half of the lower locking tube 104 and a lower half of the lower locking tube 104 with the cutting line as the boundary. The upper half of the lower locking tube 104 is threadedly connected with the connecting sleeve 14 to obtain the lifting force applied by the ground hoisting equipment, while the lower half of the lower locking tube 104 cannot directly obtain the lifting force applied by the ground hoisting equipment from the upper half of the lower locking tube 104 because it is separated from the upper half of the lower locking tube 104;

[0128] Under the action of gravity, the cava 12, the lower cone 13, the third-stage piston 15, the lower cava locking ring 16, the lower half of the lower locking tube 104, and the third-stage hydraulic cylinder 17 will all move downward until the second protrusion 19 abuts against the inner wall of the second slide groove 18 close to the cava 12 side, so that the cava 12 returns to the initial state from the operating state, releasing the expansion anchoring to the inner wall of the wellbore.

[0129] At the same time, under the action of gravity, the third protrusion 34 and the inner wall of the third slide groove 33 close to the cava 12 form abutment, and the front end of the connecting sleeve 14 will also form abutment with the rear end of the lower cone 13, and on the basis of the threaded connection between the outer wall of the rear end of the lower cone 13 and the inner wall of the front end of the three-stage piston 15, the connecting sleeve 14 provides an upward force for the lower cone 13, the three-stage piston 15, the three-stage hydraulic cylinder 17, the lower half of the lower locking tube 104, the lower center tube 105 and the lower center tube 105.

[0130] When the device of the present application is lifted using a ground lifting device, the upward force transmitted to the lower center tube 105 by the ground lifting device will be further transmitted to the second latch member 27 and the unsealing tube 25. At this time, there is a downward friction force between the deformed second sealing tube 24 and the inner wall of the wellbore. With the increase of the upward force, the force acting on the second latch member 27 by the unsealing tube 25 and the lower center tube 105 gradually increases. When the upward force is greater than the shear force required to cut off the second latch member 27 and less than the friction force between the deformed second sealing tube 24 and the inner wall of the wellbore, the second latch member 27 is cut off, and the unsealing tube 25 moves away from the second sealing tube 24, so that the second sealing tube 24 is restored to the initial state from the operating state, thereby realizing the unblocking.

[0131] The packer is lowered using ground lifting equipment. Since the deformed first sealing tube 3 generates static friction with the inner wall of the wellbore, with the increase of the lowering force, combined with the overall gravity of the packer, the upper center pipe 102 applies a downward force to the bushing 201 and the guide sleeve 202 through the first latch member 203. However, the deformed first sealing tube 3 will apply an upward force to the first latch member 203 due to the friction with the inner wall of the wellbore. With the further increase of the lowering force, when the downward force applied by the upper center pipe 102 to the first latch member 203 is greater than the shear force required to cut the first latch member 203 and less than the friction between the deformed first sealing tube 3 and the inner wall of the wellbore, the first latch member 203 is cut off, and the guide sleeve 202 moves away from the first sealing tube 3, so that the first sealing tube 3 is restored from the operating state to the initial state, thereby achieving the release of the blockage.

[0132] On this basis, reference Fig.13 and Fig.14 The present application also proposes a method for using the energy storage injection and production packer based on the above, which also includes: an injection and production pipe 100, a landing joint pipe 300, a shear ball sleeve 400, and a guide pipe 500, wherein the shear ball sleeve 400 is internally sleeved with a sealing sleeve; the method for using includes the following steps:

[0133] The injection and production pipe 100, the packer 200, the landing joint pipe 300, the shear ball sleeve 400, and the guide pipe 500 are sealed and threaded at the head and tail ends to form an integrated device, and the integrated device is lowered into the inner cavity of the wellbore;

[0134] A steel ball matched with the sealing sleeve is put into the injection and production pipe 100 to seal the inner cavity of the shear ball sleeve 400, and a hydraulic medium is injected into the inner cavity of the whole device and pressure is applied, so that the hydraulic medium enters the compression inner cavity of the second compression kit 700 and the third compression kit 800, and drives the output end of the second compression kit 700 and the third compression kit 800 to squeeze the slip 12 until the anchoring operation is completed;

[0135] Continue to pressurize until the steel ball and the sealing sleeve built into the shear ball seat 44 fall down to the bottom of the well, completing the installation of the entire device in the wellbore cavity;

[0136] When the whole device needs to be recovered, the cutting tool is lowered to cut the side wall of the inner tube 1 between the tail end of the middle annular block and the anti-return component, and the anchoring operation of the slip 12 is released;

[0137] Lift up the entire device to complete the recovery operation.

[0138] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of multiple components or the interaction relationship of multiple components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0139] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An energy storage injection and production packer, used for wellbore plugging operations in a built-in wellbore cavity, characterized in that: include: An inner tube (1), and a first component, a second compression component set (700), a slip (12), a third compression component set (800), and a second component, which are sequentially sleeved on the outer wall of the inner tube (1) and butted at the end and the end; the first component and the second component are fixedly sleeved on the inner tube (1); The tail end of the third compression kit (800) is slidably sleeved with the head end of the second kit, the head end side wall of the second kit is provided with an axially extending second slide groove (18), the tail end side wall of the third compression kit (800) is provided with a second protrusion (19) slidably connected to the second slide groove (18), and the side wall of the inner tube (1) is provided with a through hole connected to the compression inner cavity of the second compression kit (700) and the third compression kit (800); Injecting hydraulic medium into the compression inner chambers of the second compression kit (700) and the third compression kit (800) to drive the output ends of the second compression kit (700) and the third compression kit (800) to squeeze the front and rear ends of the slips (12), so that the slips (12) are in an operating state with both ends expanding outwards, and the outer wall of the inner tube (1) is also sleeved with a second non-return component and a third non-return component for preventing the output ends of the second compression kit (700) and the third compression kit (800) from resetting; The inner wall of the third compression kit (800) is provided with an annular groove (28) for accommodating the third non-return component, and the outer wall of the inner tube (1) is provided with a middle annular block located in the inner cavity of the annular groove (28), the rear end of the middle annular block faces the third non-return component and retains a predetermined distance from the third non-return component. After the side wall of the inner tube (1) between the rear end of the middle annular block and the third non-return component is cut, the third compression kit (800), the lower half of the inner tube (1), and the second component move downward until the inner wall of the annular groove (28) and the head end of the middle annular block form abutment, so that the slip (12) is restored from the operating state to the initial state.

2. The energy storage injection and production packer according to claim 1, characterized in that: The first component comprises an inner sleeve component (2) which is sequentially sleeved on the outer wall of the inner tube (1) and butted at the head and tail ends, a first sealing tube (3), and a first compression component (600), wherein the tail end of the first compression component (600) is butted with the head end of the second compression component (700); The output end of the first compression kit (600) is driven to squeeze the first sealing tube (3) to move toward the side of the inner sleeve assembly (2), so that the first sealing tube (3) is deformed to an operating state, and the outer wall of the inner tube (1) is sleeved with a first non-return component for preventing the output end of the first compression kit (600) from resetting; The second component comprises a fourth compression component (900) which is sequentially sleeved on the outer wall of the inner tube (1) and butted at the head and tail ends, a second sealing tube (24), and a lower unsealing component, wherein the head end of the fourth compression component (900) is butted at the tail end of the third compression component (800); The output end of the fourth compression kit (900) is driven to squeeze the second sealing tube (24) and move it downward toward the side of the unsealing assembly, so that the second sealing tube (24) is deformed to an operating state, and the outer wall of the inner tube (1) is sleeved with a fourth anti-return component for preventing the output end of the fourth compression kit (900) from resetting.

3. The energy storage injection and production packer according to claim 2, characterized in that: The lower unsealing component comprises an unsealing cylinder (25), an annular outer protrusion (26) on the outer wall of the inner tube (1), the inner wall of the tail end of the unsealing cylinder (25) is sleeved with the outer wall of the annular outer protrusion (26) and a cut-off pin connection is formed through a second latch (27), an annular inner protrusion is arranged at a distance from the annular outer protrusion (26) on the inner wall of the head end of the unsealing cylinder (25), the inner wall of the annular inner protrusion is slidably sleeved with the outer wall of the inner tube (1), and the head end of the unsealing cylinder (25) is butt-jointed with the tail end of the second sealing cylinder (24); The shear force required to cut off the second latch member (27) is greater than the deformation force of the second sealing tube (24) in the operating state.

4. The energy storage injection and production packer according to claim 3, characterized in that: The inner bushing assembly (2) comprises a bushing (201) and a guide sleeve (202); The inner wall of the bushing (201) is fixedly sleeved with the outer wall of the inner tube (1), the outer wall of the bushing (201) is slidably sleeved with the inner wall of the guide sleeve (202), and a cut-off pin connection is formed between the guide sleeve (202) and the bushing (201) via a first latch member (203), a first slide groove (204) extending in the axial direction is provided on the side wall of the guide sleeve (202), a first protrusion (205) slidably sleeved with the first slide groove (204) is provided on the outer wall of the bushing (201), a predetermined spacing is maintained between the inner wall of the first slide groove (204) away from the first sealing tube (3), and the tail end of the guide sleeve (202) abuts against the head end of the first sealing tube (3); The shear force required to cut off the first latch member (203) is greater than the deformation force of the first sealing tube (3) in the operating state.

5. The energy storage injection and production packer according to claim 4, characterized in that: The inner tube (1) comprises a coupling (101), an upper center tube (102), an upper locking tube (103), a lower locking tube (104), and a lower center tube (105) which are sleeved in sequence at the head and tail ends; The outer wall of the upper central tube (102) is sleeved with the inner liner assembly (2), the first sealing tube (3), and the first compression assembly (600); The outer wall of the upper locking tube (103) is sleeved with the second compression kit (700) and the slips (12); The outer wall of the lower locking tube (104) is sleeved with the third compression kit (800); The outer wall of the lower central tube (105) is sleeved with the fourth compression kit (900), the second sealing rubber cylinder (24), and the lower unsealing component.

6. The energy storage injection and production packer according to claim 5, characterized in that: The outer wall of the tail end of the upper center tube (102) is threadedly sleeved with the inner wall of the head end of the upper locking tube (103), and the first compression kit (600) comprises an upper thrust ring (4), an upper rubber tube locking ring (5), a first-stage hydraulic cylinder (6), and a first-stage piston (7) which are sequentially sleeved on the outer wall of the inner tube (1); The head end of the upper thrust ring (4) is sleeved on the outer wall of the upper center tube (102), the head end of the upper thrust ring (4) is in contact with the first-level composite sealing rubber tube (07), the inner wall of the tail end of the upper thrust ring (4) is threadedly sleeved on the outer wall of the head end of the first-level hydraulic cylinder (6), and the inner wall of the tail end of the first-level hydraulic cylinder (6) is sealed and sleeved with the outer wall of the head end of the upper locking tube (103); The inner wall of the tail end of the first hydraulic cylinder (6) is also sealed with a first piston (7) spaced apart from the head end of the upper locking tube (103); the inner wall of the first piston (7) is sealed with the outer wall of the upper center tube (102); the end wall of the tail end of the first piston (7), the end wall of the head end of the upper locking tube (103), the inner wall of the tail end of the first hydraulic cylinder (6) and the outer wall of the upper center tube (102) form a compression inner cavity of the first compression kit (600); and a first through hole (29) communicating with the compression inner cavity of the first compression kit (600) is provided on the side wall of the inner tube (1); The first anti-return component is an upper rubber tube locking ring (5), the inner wall of the upper rubber tube locking ring (5) is sleeved with the outer wall of the upper center tube (102) via a one-way sawtooth thread, and the outer wall of the upper rubber tube locking ring (5) is sleeved with the inner wall of the tail end of the upper thrust ring (4) via a one-way sawtooth thread.

7. The energy storage injection and production packer according to claim 6, characterized in that: The second compression kit (700) comprises a secondary hydraulic cylinder (8), a secondary piston (9), an upper slip lock ring (10), and an upper cone (11) which are sequentially sleeved on the outer wall of the inner tube (1); The inner wall of the head end of the secondary hydraulic cylinder (8) is sealed and sleeved with the outer wall of the upper locking tube (103), the head end of the secondary hydraulic cylinder (8) is connected to the tail end of the first compression kit (600), the inner wall of the tail end of the secondary hydraulic cylinder (8) is sealed and sleeved with the outer wall of the head end of the secondary piston (9), the inner wall of the head end of the secondary piston (9) is sealed and sleeved with the outer wall of the upper locking tube (103), and the head end of the secondary piston (9) and the tail end of the secondary hydraulic cylinder (8) are arranged at a distance, the inner wall of the tail end of the secondary hydraulic cylinder (8), the end wall of the head end of the secondary piston (9) and the outer wall of the upper locking tube (103) together form the compression inner cavity of the second compression kit (700), and the side wall of the inner tube (1) is provided with a second through hole (30) connected to the compression inner cavity of the second compression kit (700); The inner wall of the front end of the secondary piston (9) is sleeved with the outer wall of the upper locking tube (103), the inner wall of the rear end of the secondary piston (9) is threadedly sleeved with the outer wall of the front end of the upper cone (11), the inner wall of the upper cone (11) is sleeved with the outer wall of the upper locking tube (103), and the rear end of the upper cone (11) and the front end of the slip (12) form an inner cone surface to abut against each other; The second non-return component is an upper cava lock ring (10); the inner wall of the rear end of the secondary piston (9) is also sleeved with the outer wall of the upper cava lock ring (10) via a one-way sawtooth thread; the inner wall of the upper cava lock ring (10) is sleeved with the outer wall of the upper locking tube (103) via a one-way sawtooth thread; the outer wall of the upper cava lock ring (10) is sleeved with the inner wall of the rear end of the secondary piston (9) via a one-way sawtooth thread and is spaced apart from the head end of the upper cone (11).

8. The energy storage injection and production packer according to claim 7, characterized in that: The middle annular block is a connecting sleeve (14), and the inner walls of the front and rear ends of the connecting sleeve (14) are respectively connected to the outer wall of the rear end of the upper locking tube (103) and the outer wall of the front end of the lower locking tube (104) to form a threaded sealing sleeve. The third compression kit (800) comprises a lower cone (13) which is sequentially sleeved on the outer wall of the inner tube (1), a three-stage piston (15), a lower slip lock ring (16), and a three-stage hydraulic cylinder (17). The lower slip lock ring (16) is a third non-return component. The lower cone (13) is sleeved on the outer wall of the upper locking tube (103), and the head end of the lower cone (13) and the tail end of the slip (12) form an inner cone surface to abut against each other, the outer wall of the tail end of the lower cone (13) is sleeved with the inner wall of the head end of the third-stage piston (15) by thread, and the inner wall of the head end of the third-stage piston (15) is provided with an annular groove (28) for accommodating a connecting sleeve (14) and a lower slip locking ring (16), the lower slip locking ring (16) and the lower cone (13) are respectively located on both sides of the connecting sleeve (14) and are spaced apart by a predetermined distance, the inner wall of the lower slip locking ring (16) is sleeved with the outer wall of the lower locking tube (104) by a one-way sawtooth thread, and the outer wall of the lower slip locking ring (16) is sleeved with the inner wall of the annular groove (28) of the third-stage piston (15) by a one-way sawtooth thread; The inner wall of the rear end of the three-stage piston (15) is sealedly sleeved with the outer wall of the lower locking tube (104), the outer wall of the rear end of the three-stage piston (15) is sealedly sleeved with the inner wall of the head end of the three-stage hydraulic cylinder (17), the inner wall of the rear end of the three-stage hydraulic cylinder (17) is sealedly sleeved with the outer wall of the lower locking tube (104), and the rear end of the three-stage piston (15) and the rear end of the three-stage hydraulic cylinder (17) are arranged at intervals, the rear end of the three-stage hydraulic cylinder (17) is butted with the head end of the third compression kit (800), the inner wall of the head end of the three-stage hydraulic cylinder (17), the end wall of the rear end of the three-stage piston (15), and the outer wall of the lower locking tube (104) together form the compression inner cavity of the third compression kit (800), and the side wall of the inner tube (1) is provided with a third through hole (31) connected with the compression inner cavity of the third compression kit (800); The side wall of the head end of the three-stage hydraulic cylinder (17) is provided with an axially extending second slide groove (18), and the outer wall of the tail end of the three-stage piston (15) is provided with a second protrusion (19) slidably connected to the second slide groove (18), and a predetermined distance is set between the second protrusion (19) and the inner wall of the second slide groove (18) close to the slip (12); The side wall of the tail end of the three-stage hydraulic cylinder (17) is provided with an axially extending third slide groove (33), and the outer wall of the tail end of the lower locking tube (104) is provided with a third protrusion (34) slidably connected to the third slide groove (33), and a predetermined distance is set between the third protrusion (34) and the inner wall of the third slide groove (33) on the side close to the slip (12).

9. The energy storage injection and production packer according to claim 8, characterized in that: The inner wall of the tail end of the lower locking tube (104) is threadedly sealed with the outer wall of the head end of the lower center tube (105); the fourth compression kit (900) comprises a four-stage piston (20), a four-stage hydraulic cylinder (21), a lower rubber cylinder locking ring (22), and a lower thrust ring (23) which are sequentially sleeved on the outer wall of the inner tube (1); The inner wall of the head end of the four-stage hydraulic cylinder (21) is sealingly sleeved with the outer wall of the tail end of the lower locking tube (104), and the inner wall of the head end of the four-stage hydraulic cylinder (21) is also sealingly sleeved with the outer wall of the four-stage piston (20). The outer wall of the four-stage piston (20) is sealingly sleeved with the inner wall of the head end of the four-stage hydraulic cylinder (21) and is arranged at a distance from the tail end of the lower locking tube (104). The inner wall of the four-stage piston (20) is sealingly sleeved with the outer wall of the lower center tube (105). The end wall of the head end of the four-stage piston (20), the outer wall of the lower center tube (105), the end wall of the tail end of the lower locking tube (104) and the inner wall of the head end of the four-stage hydraulic cylinder (21) together form a compression inner cavity of the fourth compression kit (900). The side wall of the inner tube (1) is provided with a fourth through hole (32) connected to the compression inner cavity of the fourth compression kit (900); The outer wall of the tail end of the four-stage hydraulic cylinder (21) is threadedly sleeved with the inner wall of the head end of the lower thrust ring (23), the inner wall of the tail end of the lower thrust ring (23) is sleeved with the outer wall of the lower center tube (105), and the tail end of the lower thrust ring (23) is in contact with the head end of the second sealing tube (24); The fourth anti-return component is a lower rubber cylinder locking ring (22), the inner wall of the lower rubber cylinder locking ring (22) is sleeved with the outer wall of the central tube (53) through a one-way sawtooth thread, the outer wall of the lower rubber cylinder locking ring (22) is sleeved with the inner wall of the head end of the lower thrust ring (23) through a one-way sawtooth thread, and the lower rubber cylinder locking ring (22) is spaced apart from the tail end of the fourth-stage hydraulic cylinder (21).

10. The energy storage injection and production packer according to claim 9, characterized in that: An annular cavity is provided between the inner wall of the upper end of the secondary hydraulic cylinder (8) and the outer wall of the upper locking tube (103), and between the inner wall of the lower end of the tertiary hydraulic cylinder (17) and the outer wall of the lower locking tube (104).

11. The energy storage injection and production packer according to claim 1, characterized in that: The slip (12) adopts a cylindrical structure, and the outer walls at both ends of the slip (12) are axially arrayed with a plurality of annular teeth, and both ends of the slip (12) are provided with a plurality of dividing grooves arranged in a circumferential array and extending axially, and the dividing grooves at both ends of the slip (12) are staggered.

12. A method for using the energy storage injection and production packer according to any one of claims 1 to 11, characterized in that: Also includes: The injection and production pipe (100), the landing joint pipe (300), the shear ball sleeve (400), and the guide tube (500), wherein the shear ball sleeve (400) is internally provided with a sealing sleeve; the use method comprises the following steps: The injection and production pipe (100), the packer (200), the landing joint pipe (300), the shear ball casing (400), and the guide pipe (500) are sequentially threadedly connected at the head and tail ends to form an integrated device, and the integrated device is lowered into the inner cavity of the wellbore; A steel ball matched with the sealing sleeve is introduced from the injection and production pipe (100) to seal the inner cavity of the shear ball sleeve (400), and a hydraulic medium is injected into the inner cavity of the overall device and pressure is applied, so that the hydraulic medium enters the compression inner cavity of the second compression kit (700) and the third compression kit (800), and drives the output ends of the second compression kit (700) and the third compression kit (800) to squeeze the slips (12) until the anchoring operation is completed; Continue to pressurize until the steel ball and the sealing sleeve built into the shear ball seat (44) fall down to the bottom of the well, completing the installation of the entire device in the wellbore cavity; When the whole device needs to be recovered, the cutting tool is lowered to cut the side wall of the inner tube (1) between the tail end of the middle annular block and the anti-return component, and the anchoring operation of the slip (12) is released; Lift up the entire device to complete the recovery operation.

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