Annular pressure relief device

Abstract

The utility model relates to the technical field of constant pressure relief, in particular to an annulus pressure relief device which comprises a base plate, a damping mechanism is fixedly arranged at the top end of the base plate, and the damping mechanism comprises a first connecting block, a buffer spring, a damper, a second connecting block and a top plate. Data recorded by the pressure reading and recording equipment can be compared with flowing bottomhole pressure, oil well parameters can be adjusted easily, a plurality of pipelines are connected together through the positioning screws and the OD buckles, a worker starts the push rod motor in an existing line connection mode, and the oil well flow pressure is controlled. An electric telescopic push rod at the bottom end of a push rod motor is movably connected with a sliding groove to move up and down, pressure release adjustment is controlled through contact of a control plug and a circulation groove, according to the device, amplitude is inevitably generated during operation of the motor, and a good damping effect can be achieved on the motor through elastic buffering of a compression spring in cooperation with a damper; errors are reduced to the maximum extent, and the overall stability of the device during operation is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of constant pressure relief technology, specifically an annular pressure relief device. Background Technology

[0002] Currently, with the increasing demand for oil and gas resources year by year, the exploration of oil and gas from shallow to deep and ultra-deep waters has become an inevitable trend globally. Deep water areas contain enormous oil and gas resources and play a crucial role in the development of oil and gas energy. Each deep water oil and gas well requires a huge investment, so the integrity of the wellbore throughout its entire life cycle is crucial to the efficient development of deep water oil and gas fields. Therefore, a new wellbore integrity control method and device is of great importance to the entire deep water drilling and completion project and even the petroleum industry.

[0003] As disclosed in announcement number CN 108412458 B, a bidirectional controllable deepwater annulus closed pressure relief device and method includes a device body with four ribs spaced apart on the device body; it also includes an inward pressure relief valve mechanism, an outward pressure relief valve mechanism, a flow channel filter screen, and a flow channel protective sheet disposed on the ribs of the device body; on the device body, the motor of the device inevitably generates amplitude during operation, and without the setting of a vibration damping structure, the amplitude generated by the motor may cause errors in the measurement results. Conventional devices do not have adjustable pressure relief valves and cannot compare the data recorded by the data recording device with the bottom hole flowing pressure, which is helpful for adjusting oil well parameters. Utility Model Content

[0004] The purpose of this invention is to provide an annular pressure relief device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An annular pressure relief device includes a base plate. A shock-absorbing mechanism is fixedly installed at the top of the base plate. The shock-absorbing mechanism includes a first connecting block, a buffer spring, a damper, a second connecting block, and a top plate. A plurality of first connecting blocks are fixedly installed at the top of the base plate. A buffer spring is fixedly installed at the top of each first connecting block. A damper is fixedly installed inside each buffer spring. A second connecting block is fixedly installed at the top of each buffer spring. The other side of the damper is fixedly connected to the second connecting block. A top plate is fixedly installed on the other side of the second connecting block. An electric telescopic push rod is movably installed inside the top plate. A sliding groove is formed in the center of the base plate. The sliding groove is movably connected to the electric telescopic push rod. A control plug is movably installed at the bottom end of the electric telescopic push rod.

[0007] Preferably, a push rod motor is fixedly installed at the center of the top of the top plate. One end of the push rod motor is movably connected to the top of the electric telescopic push rod. The push rod motor is started through the existing wiring connection to cooperate with the electric telescopic push rod to make the control plug complete the displacement.

[0008] Preferably, a fixed tube is fixedly provided at the bottom end of the base plate, and a flow groove is opened inside the fixed tube. The control plug is movably connected to the flow groove. The fixed tube serves as a carrier, and the pressure is controlled by changing the contact area between the control plug and the flow groove.

[0009] Preferably, a pressure reading and recording device is fixedly installed on one side of the fixed pipe. The data recorded by the pressure reading and recording device can be compared with the bottom hole flowing pressure, which helps to adjust the oil well parameters. The pressure reading and recording device can read data using an existing SD card.

[0010] Preferably, a first fixing plate is fixedly provided at both ends of the fixing tube, and a second fixing plate is movably provided on the side of the first fixing plate. A connecting tube is fixedly provided inside the first fixing plate and the second fixing plate. The movable connection between the first fixing plate and the second fixing plate enables convenient disassembly and installation, saving time and effort.

[0011] Preferably, an OD buckle is fixedly provided at the other end of the connecting pipe, and positioning screws are movably provided around the first and second fixing plates. The positioning screws are used to fix the positions of the first and second fixing plates, and the OD buckle is used to connect the pipes.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This annular pressure relief device primarily functions to release constant pressure in the annulus of offshore oil wells, ensuring stable bottomhole flowing pressure. Simultaneously, data recorded by a pressure reading and recording device can be compared with the bottomhole flowing pressure, aiding in the adjustment of well parameters. The pressure reading and recording device uses existing SD card technology. Multiple pipes are connected together via positioning screws and OD clips. Operators activate the push rod motor using existing wiring connections. The electrically operated telescopic push rod at the bottom of the push rod motor moves vertically and vertically through a sliding groove. Pressure release and adjustment are controlled by the contact between a control plug and the flow channel.

[0014] 2. This annular pressure relief device is designed to reduce vibrations in the motor during operation. The elastic buffer of the compression spring, combined with the damper, effectively reduces the vibration of the motor, minimizes errors, and ensures the overall stability of the device during operation. The automated control of the drive motor does not require much intervention from staff, saving time and effort and significantly improving work efficiency. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall external structure of this utility model;

[0016] Figure 2 This is a partial structural installation diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the installation of the pressure regulating structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the installation of the shock-absorbing and buffering structure of this utility model;

[0019] Figure 5 This utility model Figure 3 Enlarged diagram of point A in the middle.

[0020] In the diagram: 1. Base plate; 2. First connecting block; 3. Buffer spring; 4. Damper; 5. Second connecting block; 6. Top plate; 7. Electric telescopic push rod; 8. Slide groove; 9. Control plug; 10. Push rod motor; 11. Fixed pipe; 12. Flow groove; 13. Pressure reading and recording device; 14. First fixed plate; 15. Second fixed plate; 16. Connecting pipe; 18. OD buckle; 19. Positioning screw. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5 As shown, this utility model provides a technical solution:

[0023] An annular pressure relief device includes a base plate 1. A shock-absorbing mechanism is fixedly installed at the top of the base plate 1. The shock-absorbing mechanism includes a first connecting block 2, a buffer spring 3, a damper 4, a second connecting block 5, and a top plate 6. Several first connecting blocks 2 are fixedly installed at the top of the base plate 1. A buffer spring 3 is fixedly installed at the top of the first connecting block 2. A damper 4 is fixedly installed inside the buffer spring 3. A second connecting block 5 is fixedly installed at the top of the buffer spring 3. The other side of the damper 4 is fixedly connected to the second connecting block 5. A top plate 6 is fixedly installed on the other side of the second connecting block 5. An electric telescopic push rod 7 is movably installed inside the top plate 6. A sliding groove 8 is opened in the center of the base plate 1. The sliding groove 8 is movably connected to the electric telescopic push rod 7. A control plug 9 is movably installed at the bottom end of the electric telescopic push rod 7.

[0024] In this embodiment, preferably, a push rod motor 10 is fixedly installed at the center of the top of the top plate 6. One end of the push rod motor 10 is movably connected to the top of the electric telescopic push rod 7. The push rod motor is started by means of existing wiring to cooperate with the electric telescopic push rod to make the control plug complete the displacement.

[0025] In this embodiment, preferably, a fixed tube 11 is fixedly provided at the bottom end of the base plate 1, and a flow groove 12 is provided inside the fixed tube 11. The control plug 9 is movably connected to the flow groove 12. The fixed tube serves as a carrier, and the pressure is controlled by changing the contact area between the control plug and the flow groove.

[0026] In this embodiment, preferably, a pressure reading and recording device 13 is fixedly installed on one side of the fixed pipe 11. The data recorded by the pressure reading and recording device can be compared with the bottom hole flowing pressure, which helps to adjust the oil well parameters. The pressure reading and recording device can read data using an existing SD card.

[0027] In this embodiment, preferably, a first fixing plate 14 is fixedly provided at both ends of the fixing tube 11, a second fixing plate 15 is movably provided on the side of the first fixing plate 14, and a connecting tube 16 is fixedly provided inside the first fixing plate 14 and the second fixing plate 15. The movable connection between the first fixing plate and the second fixing plate enables convenient disassembly and installation, saving time and effort.

[0028] In this embodiment, preferably, an OD buckle 18 is fixedly provided at the other end of the connecting pipe 16, and positioning screws 19 are movably provided around the first fixing plate 14 and the second fixing plate 15. The positioning screws are used to fix the positions of the first fixing plate and the second fixing plate, and the OD buckle is used to connect the pipes.

[0029] In this embodiment, an annulus pressure relief device is used to release pressure in the annulus of offshore oil wells, ensuring stable bottom hole pressure. Simultaneously, data recorded by the pressure reading and recording device 13 can be compared with the bottom hole pressure, aiding in well parameter adjustments. The pressure reading and recording device 13 uses an existing SD card for reading. Multiple pipes are connected together via positioning screws 19 and OD clips 18. Operators start the push rod motor 10 using existing wiring connections. The electric telescopic push rod 7 at the bottom of the push rod motor 10 moves up and down via a sliding groove 8. Pressure release is controlled by the contact between the control plug 9 and the flow channel 12. The motor inevitably generates vibration during operation; the elastic buffer of the compression spring, combined with the damper 4, effectively reduces vibration, minimizing errors and ensuring overall stability during operation. The automated control of the drive motor requires minimal operator intervention, saving time and effort and significantly improving work efficiency.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An annulus pressure relief device, characterized by: The system includes a base plate (1), a shock-absorbing mechanism fixedly installed at the top of the base plate (1), the shock-absorbing mechanism including a first connecting block (2), a buffer spring (3), a damper (4), a second connecting block (5) and a top plate (6). Several first connecting blocks (2) are fixedly installed at the top of the base plate (1), a buffer spring (3) is fixedly installed at the top of the first connecting block (2), a damper (4) is fixedly installed inside the buffer spring (3), a second connecting block (5) is fixedly installed at the top of the buffer spring (3), the other side of the damper (4) is fixedly connected to the second connecting block (5), the other side of the second connecting block (5) is fixedly installed on the top plate (6), an electric telescopic push rod (7) is movably installed inside the top plate (6), a sliding groove (8) is opened in the center of the base plate (1), the sliding groove (8) is movably connected to the electric telescopic push rod (7), and a control plug (9) is movably installed at the bottom end of the electric telescopic push rod (7).

2. The annular pressure relief device according to claim 1, characterized in that: A push rod motor (10) is fixedly installed at the center of the top of the top plate (6), and one end of the push rod motor (10) is movably connected to the top of the electric telescopic push rod (7).

3. An annulus pressure relief device according to claim 1, wherein: A fixed tube (11) is fixedly installed at the bottom of the base plate (1), and a flow groove (12) is opened inside the fixed tube (11). The control plug (9) is movably connected to the flow groove (12).

4. An annulus pressure relief device according to claim 3, wherein: A pressure reading and recording device (13) is fixedly installed on one side of the outside of the fixed tube (11).

5. The annular pressure relief device according to claim 3, characterized in that: The fixed tube (11) is fixedly provided with a first fixed plate (14) at both ends, and a second fixed plate (15) is movably provided on the side of the first fixed plate (14). A connecting tube (16) is fixedly provided inside the first fixed plate (14) and the second fixed plate (15).

6. An annulus pressure relief device according to claim 5, wherein: The other end of the connecting pipe (16) is fixedly provided with an OD buckle (18), and the first fixing plate (14) and the second fixing plate (15) are circumferentially provided with positioning screws (19).

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