Hydraulic unclamping packer

Abstract

The utility model discloses a hydraulic unblocking packer, which relates to the technical field of oil and gas exploitation equipment, and comprises a packing component, an outer sheath, a transportation component and a pipeline transportation component, the inner wall of the outer sheath is fixedly provided with a hydraulic sealing piece, the surface of the outer sheath is provided with a storage groove, and the pipeline transportation piece is arranged in the packing component. A feeding piece is fixed to the top of the pipeline conveying piece, and a fracturing jetting piece is fixed to the surface of the pipeline conveying piece. The device has the advantages that through cooperation of the second feeding pipe, the hollow pipe, the oil and gas conveying pipe, the annular spraying pipe and the pressurizing spraying head, the fluid conveying purity and the working efficiency are remarkably improved, the problems of cross contamination and conveying disorder are effectively solved, the chemical stability of different media is guaranteed, and the working efficiency is improved. And meanwhile, efficient flow dividing control in a limited space is achieved, and the safety of oil and gas exploitation and the process reliability are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas extraction equipment technology, and in particular to a hydraulic release packer. Background Technology

[0002] In the daily work of oil and gas well packing operations, hydraulic release packers are required to ensure reliable sealing and prevent packing failure from affecting downhole operation safety or causing production delays to oil and gas extraction efficiency.

[0003] Existing hydraulic packers have significant drawbacks in fluid delivery. They use a single internal pipeline structure to transport oil, gas, and fracturing fluid, posing a risk of cross-contamination and failing to achieve effective isolation. They cannot achieve independent delivery of different media through multi-channel separation design, and lack a diversion control system, making it difficult to guarantee the purity of various fluids within a limited space. These dual structural defects not only affect extraction efficiency but may also lead to chemical reactions due to fluid mixing or affect fracturing effects due to chaotic delivery, ultimately reducing the safety and operational efficiency of oil and gas extraction. Utility Model Content

[0004] In view of the problems existing in the above-mentioned hydraulic release packer, this utility model is proposed.

[0005] Therefore, the problem that this invention aims to solve is the cross-contamination of fracturing fluid and oil and gas caused by sharing the same transportation pipeline.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a hydraulic release packer, comprising a packer assembly including an outer sheath, wherein a hydraulic seal is fixed to the inner wall of the outer sheath, and a receiving groove is formed on the surface of the outer sheath; and,

[0007] A transport component, disposed inside the containment component, includes a pipeline transport member, a feed member fixed to the top of the pipeline transport member, a fracturing injection member fixed to the surface of the pipeline transport member, and an elastic limiting member disposed inside the pipeline transport member.

[0008] As a preferred embodiment of the hydraulic release packer of this utility model, the hydraulic seal includes a housing fixed to the inner wall of the outer sheath, a piston plate movably connected to the inner wall of the housing, a hydraulic cylinder provided on one side of the housing, and a fixing ring fixed on one side of the hydraulic cylinder.

[0009] As a preferred embodiment of the hydraulic release packer of this utility model, the surface of the housing is connected to a connecting pipe, and a sealing rubber ring is fixed to one side of the connecting pipe, the sealing rubber ring being fixed to the inner wall of the receiving groove.

[0010] In a preferred embodiment of the hydraulic release packer of this utility model, the hydraulic cylinder is fixed to one side of the piston plate.

[0011] As a preferred embodiment of the hydraulic release packer of this utility model, the pipeline transport component includes a hollow tube fixed to the inner wall of the fixing ring, and an oil and gas transport pipe is fixed inside the hollow tube.

[0012] In a preferred embodiment of the hydraulic release packer of this utility model, the fixing ring is fixed to the surface of the hollow tube.

[0013] In a preferred embodiment of the hydraulic release packer of this utility model, the elastic limiting member includes a movable shell movably connected to the inner wall of the hollow tube, and a rubber spring post is fixed to the bottom of the movable shell, the rubber spring post being fixed to the inner wall of the hollow tube.

[0014] As a preferred embodiment of the hydraulic release packer of this utility model, the fracturing injection component includes a hook fixed to the inner wall of the outer sheath, an annular plate is sleeved on the surface of the hook, an annular nozzle is fixed at the bottom of the annular plate, and a pressure boosting nozzle is fixed on the surface of the annular nozzle.

[0015] As a preferred embodiment of the hydraulic release packer of this utility model, a connecting hose is fixed to the inner side of the annular nozzle, and the connecting hose is fixed to the surface of the hollow tube.

[0016] As a preferred embodiment of the hydraulic release packer of this utility model, the feeding component includes a second feeding pipe fixed to the top of the hollow tube, the inner wall of the second feeding pipe is fixed with an elastic sealing plate, and the feeding component also includes a first feeding pipe fixed to one side of the hollow tube.

[0017] The beneficial effects of this utility model are as follows: through the coordinated operation of the second feeding pipe, hollow pipe, oil and gas transport pipe, annular nozzle and booster nozzle, the purity of fluid transportation and operation efficiency are significantly improved, the problems of cross-contamination and chaotic transportation are effectively solved, the chemical stability of different media is guaranteed, the fracturing effect is avoided due to fluid mixing, and efficient diversion control in a limited space is achieved, which greatly improves the safety and process reliability of oil and gas extraction. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural diagram of a hydraulically release packer.

[0020] Figure 2 This is a structural diagram of the pipeline transport component for a hydraulically release packer.

[0021] Figure 3 This is a structural diagram of the packer assembly for a hydraulically release packer.

[0022] Figure 4 This is a structural diagram of the hydraulic seal of a hydraulic release packer.

[0023] Figure 5 This is a structural diagram of the elastic limiting component of a hydraulic release packer.

[0024] Figure 6 Another perspective view of the elastic limiting component of a hydraulically released packer.

[0025] In the diagram: 1. Seal assembly; 11. Outer sleeve; 12. Hydraulic seal; 12-1. Piston plate; 12-2. Housing; 12-3. Sealing rubber ring; 12-4. Hydraulic cylinder; 12-5. Fixing ring; 12-6. Connecting pipe; 13. Receiving groove; 2. Transport assembly; 21. Pipeline transport component; 21-1. Hollow pipe; 21-2. Oil and gas transport pipe; 22. Fracturing injection component; 22-1. Annular nozzle; 22-2. Annular clamping plate; 22-3. Hanging hook; 22-4. Pressure boosting nozzle; 22-5. Connecting hose; 23. Feed component; 23-1. Second feed pipe; 23-2. Elastic sealing plate; 23-3. First feed pipe; 24. Elastic limiting component; 24-1. Movable shell; 24-2. Rubber spring column. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0029] Example 1

[0030] Reference Figure 1 and Figure 2 This is the first embodiment of the present invention, which provides a hydraulic release packer, which includes a packer assembly 1 and a transport assembly 2.

[0031] Specifically, the sealing component 1 includes an outer sheath 11, the inner wall of which is fixed with a hydraulic seal 12, and the surface of the outer sheath 11 is provided with a receiving groove 13.

[0032] Specifically, the transport component 2 is located inside the enclosure component 1 and includes a pipeline transport component 21. A feed component 23 is fixed to the top of the pipeline transport component 21, a fracturing injection component 22 is fixed to the surface of the pipeline transport component 21, and an elastic limiting component 24 is provided inside the pipeline transport component 21.

[0033] Example 2

[0034] Reference Figures 2-6 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0035] Specifically, the hydraulic seal 12 includes a housing 12-2 fixed to the inner wall of the outer sheath 11, a piston plate 12-1 movably connected to the inner wall of the housing 12-2, a hydraulic cylinder 12-4 provided on one side of the housing 12-2, and a fixing ring 12-5 fixed on one side of the hydraulic cylinder 12-4.

[0036] The retaining ring 12-5 facilitates the connection between the hydraulic cylinder 12-4 and the hollow tube 21-1, thereby providing balanced support for the hollow tube 21-1.

[0037] Specifically, a connecting pipe 12-6 is connected to the surface of the housing 12-2, and a sealing rubber ring 12-3 is fixed to one side of the connecting pipe 12-6. The sealing rubber ring 12-3 is fixed to the inner wall of the storage groove 13.

[0038] Specifically, the hydraulic cylinder 12-4 is fixed to one side of the piston plate 12-1.

[0039] The output end of the hydraulic cylinder 12-4 is fixedly connected to the piston plate 12-1 to drive it.

[0040] Specifically, the pipeline transport component 21 includes a hollow tube 21-1 fixed to the inner wall of the fixing ring 12-5, and an oil and gas transport pipe 21-2 is fixed inside the hollow tube 21-1.

[0041] The oil and gas transport pipe 21-2 can transport the released oil and gas, and can separate the transport to avoid cross-contamination.

[0042] Specifically, the retaining ring 12-5 is fixed to the surface of the hollow tube 21-1.

[0043] The fixing ring 12-5 can fix the hollow tube 21-1, and play a good role in balancing support.

[0044] Specifically, the elastic limiting member 24 includes a movable shell 24-1 movably connected to the inner wall of the hollow tube 21-1, and a rubber spring post 24-2 fixed to the bottom of the movable shell 24-1. The rubber spring post 24-2 is fixed to the inner wall of the hollow tube 21-1.

[0045] After the fracturing fluid has been drained and the surrounding oil wells have been fracturing, the rubber spring column 24-2 can drive the movable shell 24-1 to reset under the elastic force generated by the recovery deformation, so as to avoid cross-contamination caused by oil and gas seepage when fracturing is not required.

[0046] Specifically, the fracturing injection component 22 includes a hook 22-3 fixed to the inner wall of the outer sheath 11, an annular plate 22-2 is sleeved on the surface of the hook 22-3, an annular nozzle 22-1 is fixed at the bottom of the annular plate 22-2, and a pressure boosting nozzle 22-4 is fixed on the surface of the annular nozzle 22-1.

[0047] The pressurization nozzle 22-4 can effectively pressurize the fracturing fluid passing through it, thereby ensuring the fracturing effect of the fracturing fluid.

[0048] Specifically, a connecting hose 22-5 is fixed to the inner side of the annular nozzle 22-1, and the connecting hose 22-5 is fixed to the surface of the hollow tube 21-1.

[0049] The connecting hose 22-5 can provide a certain degree of bending toughness while ensuring the flow of materials.

[0050] Specifically, the feeding component 23 includes a second feeding pipe 23-1 fixed to the top of the hollow tube 21-1, and an elastic sealing plate 23-2 fixed to the inner wall of the second feeding pipe 23-1. The feeding component 23 also includes a first feeding pipe 23-3 fixed to one side of the hollow tube 21-1.

[0051] Through the coordinated operation of multi-channel independent conveying mechanisms and controllable diversion structures, the purity and efficiency of fluid conveying are significantly improved, effectively solving the problems of cross-contamination and chaotic conveying.

[0052] The multi-channel independent conveying mechanism consists of a second feeding pipe 23-1, a hollow pipe 21-1, and an oil and gas transport pipe 21-2.

[0053] The flow splitting structure consists of an annular nozzle 22-1 and a booster nozzle 22-4.

[0054] It not only ensures the chemical stability of different media, but also avoids the decline in fracturing effect caused by fluid mixing, while achieving efficient diversion control in a limited space, greatly improving the safety and process reliability of oil and gas extraction.

[0055] In use, the user first places the sealing assembly 1 at the required sealing depth, and then starts the hydraulic cylinder 12-4 through the external controller, so that it squeezes the piston plate 12-1 by hydraulic drive. This causes the internally filled gel-like material to flow into the inner cavity of the sealing rubber ring 12-3 under pressure, thereby causing the sealing rubber ring 12-3 to expand and tighten the main body of the sealing assembly 1, so as to ensure the sealing effect of the main body and complete the overall fixed installation of the sealing assembly 1.

[0056] When fracturing is required on the rock wall around the bottom of the outer sheath 11, the user first injects an appropriate amount of fracturing fluid into the inner cavity of the hollow tube 21-1 through the second feed pipe 23-1, allowing the fracturing fluid to flow from top to bottom within the hollow tube 21-1 and fall down to the top of the movable shell 24-1. When the volume of fracturing fluid reaches a certain level, it will move the movable shell 24-1 downward under the action of gravity, exposing the joint of the connecting hose 22-5, allowing the fracturing fluid to enter the connecting hose 22-5 and then be sent to the annular nozzle 22. The inner cavity of the hollow tube 21-1 is pressurized by the booster nozzle 22-4 and then sprayed out, achieving a good soil and rock wall fracturing effect. After fracturing, the oil and gas released by the rock wall fracturing are extracted upward through the oil and gas transport pipe 21-2. The two materials are transported in opposite directions: one is transported downward through the cavity inside the hollow tube 21-1, and the other is transported upward through the oil and gas transport pipe 21-2 embedded inside the hollow tube 21-1. The fracturing fluid is transported downward and the oil and gas is transported upward, avoiding cross-contamination during transportation.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A hydraulic release packer, characterized in that: include, The sealing assembly (1) includes an outer sleeve (11), the inner wall of which is fixed with a hydraulic seal (12), and a receiving groove (13) is formed on the surface of the outer sleeve (11); and, The transport component (2) is located inside the enclosure component (1) and includes a pipeline transport component (21). A feed component (23) is fixed to the top of the pipeline transport component (21), a fracturing injection component (22) is fixed to the surface of the pipeline transport component (21), and an elastic limiting component (24) is provided inside the pipeline transport component (21).

2. The hydraulic unsetting packer of claim 1, wherein: The hydraulic seal (12) includes a housing (12-2) fixed to the inner wall of the outer sleeve (11), a piston plate (12-1) is movably connected to the inner wall of the housing (12-2), a hydraulic cylinder (12-4) is provided on one side of the housing (12-2), and a fixing ring (12-5) is fixed on one side of the hydraulic cylinder (12-4).

3. The hydraulic unsetting packer of claim 2, wherein: The surface of the housing (12-2) is connected to a connecting pipe (12-6), and a sealing rubber ring (12-3) is fixed on one side of the connecting pipe (12-6). The sealing rubber ring (12-3) is fixed to the inner wall of the receiving groove (13).

4. The hydraulic unsetting packer of claim 3, wherein: The hydraulic cylinder (12-4) is fixed to one side of the piston plate (12-1).

5. The hydraulic unsetting packer of claim 4, wherein: The pipeline transport component (21) includes a hollow tube (21-1) fixed to the inner wall of the fixing ring (12-5), and an oil and gas transport pipe (21-2) is fixed inside the hollow tube (21-1).

6. The hydraulic unsetting packer of claim 5, wherein: The fixing ring (12-5) is fixed to the surface of the hollow tube (21-1).

7. The hydraulic unsetting packer of claim 6, wherein: The elastic limiting member (24) includes a movable shell (24-1) movably connected to the inner wall of the hollow tube (21-1), and a rubber spring post (24-2) is fixed at the bottom of the movable shell (24-1). The rubber spring post (24-2) is fixed to the inner wall of the hollow tube (21-1).

8. The hydraulic unsetting packer of claim 7, wherein: The fracturing injection component (22) includes a hook (22-3) fixed to the inner wall of the outer sheath (11). The surface of the hook (22-3) is fitted with an annular plate (22-2). The bottom of the annular plate (22-2) is fixed with an annular nozzle (22-1). The surface of the annular nozzle (22-1) is fixed with a booster nozzle (22-4).

9. The hydraulic unsetting packer of claim 8, wherein: A connecting hose (22-5) is fixed to the inner side of the annular nozzle (22-1), and the connecting hose (22-5) is fixed to the surface of the hollow tube (21-1).

10. The hydraulic release packer as described in claim 9, characterized in that: The feeding component (23) includes a second feeding pipe (23-1) fixed to the top of the hollow tube (21-1), and an elastic sealing plate (23-2) is fixed to the inner wall of the second feeding pipe (23-1). The feeding component (23) also includes a first feeding pipe (23-3) fixed to one side of the hollow tube (21-1).

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