Sealing cabin for intelligent plunger of gas well

Abstract

The invention belongs to the technical field of water drainage and gas recovery of intelligent self-adaptive plungers of gas wells, particularly relates to a sealed cabin for an intelligent plunger of a gas well, and aims to solve the problem that a sealed cabin for mounting components such as an electronic module of the intelligent plunger of the gas well is lacked in the prior art. The device comprises a driving cabin, an acquisition control cabin, a battery cabin and the like, the acquisition control cabin is fixedly connected with the battery cabin, the driving cabin is fixedly connected with the acquisition control cabin, a driving mechanism is arranged in the driving cabin, a driving mounting seat is coaxially mounted on the driving cabin, a reducing plug is connected with the driving cabin, and a reducing plug inner support is arranged in the reducing plug. The variable-diameter plug inner support is coaxially mounted on the driving mounting seat, the driving cabin, the acquisition control cabin, the battery cabin and other components are mounted and connected to form a sealed cabin body, and the sealed cabin body plays a role in protecting the detection sensor, the variable-diameter plug variable-diameter adjustment driving mechanism, the intelligent control electronic module and the battery, so that the detection sensor, the variable-diameter plug variable-diameter adjustment driving mechanism, the intelligent control electronic module and the battery are prevented from being eroded by high pressure and environmental dirt.

Description

Technical Field

[0001] This invention belongs to the field of intelligent adaptive plunger drainage and gas production technology for gas wells, and specifically relates to a sealed chamber for intelligent plungers in gas wells. Background Technology

[0002] As some older wells in gas fields enter the later stages of production, they commonly experience problems such as pressure drop, reduced gas production, and difficulty in carrying liquid, leading to frequent water flooding and production stoppages. For wells with moderate to severe liquid accumulation in gas fields, mainstream gas production technologies such as pressure reduction with liquid carrying, continuous gas lift, plunger pumps, velocity tubing, and bubble drainage face significant challenges in resuming production, have short stabilization periods, and high investment costs, failing to effectively solve the technical problem of frequent water flooding. Considering the above production status and processes, high water-cut wells urgently require a highly efficient and stable liquid drainage technology.

[0003] The intelligent adaptive plunger drainage technology for gas wells integrates high-precision sensors with high-speed matrix transmission calculations through adaptive control algorithms. It is based on the main identification and control motion mechanism, which has low operating costs, high level of intelligence, and can realize unattended continuous production without shutting down the well. It can also record and store the tool's own movements and wellbore data in real time.

[0004] Compared to traditional plungers that are mainly based on mechanical structures, smart plungers add detection sensors and variable-diameter plugs for fine adjustment of variable-diameter dimensions, as well as electronic modules and power batteries for intelligent control. However, existing technologies lack a sealed chamber for installing these components, which can simultaneously bear pressure and provide a seal to ensure the smart plunger works stably in harsh downhole environments and facilitate maintenance, inspection, or battery replacement. Summary of the Invention

[0005] To address the lack of a sealed enclosure for installing electronic modules and other components of a gas well smart plunger in existing technologies, this invention provides a sealed enclosure for a gas well smart plunger, comprising:

[0006] The battery compartment has a cylindrical structure with a sealed bottom;

[0007] The data acquisition and control compartment has one end fixedly connected to the battery compartment.

[0008] A drive compartment, one end of which is fixedly connected to the acquisition and control compartment, and a drive mechanism is provided inside the drive compartment;

[0009] A drive mounting bracket is coaxially mounted on the drive compartment.

[0010] A variable diameter plug is connected to the drive compartment. An internal support for the variable diameter plug is provided inside the variable diameter plug. The internal support for the variable diameter plug is coaxially mounted on the drive mounting base.

[0011] The battery compartment, data acquisition and control compartment, drive compartment, and variable diameter plug internal support are interconnected and form a sealed compartment.

[0012] According to some embodiments of this application, a sealed chamber for a smart plunger in a gas well is provided, wherein the inner support of the variable diameter plunger and the drive mounting seat are both provided with central holes along the axial direction and are interconnected, and the push rod of the drive mechanism can pass through the central hole of the drive mounting seat and enter the central hole of the inner support of the variable diameter plunger.

[0013] According to some embodiments of this application, a sealing chamber for a smart plunger in a gas well further includes a first sealing ring and a second sealing ring. The first sealing ring is disposed between the inner support of the variable diameter plunger and the push rod, and the second sealing ring is disposed at the connection between the drive mounting base and the inner support of the variable diameter plunger.

[0014] According to some embodiments of this application, a sealed chamber for a smart plunger in a gas well is provided, which further includes a first chamber connecting seat, the first chamber connecting seat being coaxially disposed between the drive chamber and the acquisition and control chamber.

[0015] According to some embodiments of this application, a sealing chamber for a smart plunger in a gas well further includes a fourth sealing ring and a fifth sealing ring. The fourth sealing ring is disposed at the connection between the first chamber connecting seat and the drive chamber, and the fifth sealing ring is disposed at the connection between the first chamber connecting seat and the acquisition and control chamber.

[0016] According to some embodiments of this application, a sealed chamber for a smart plunger in a gas well further includes a second chamber connecting seat, which is coaxially mounted between the acquisition and control chamber and the battery chamber.

[0017] According to some embodiments of this application, a sealing chamber for a smart plunger in a gas well further includes a seventh sealing ring and an eighth sealing ring. The seventh sealing ring is disposed at the connection between the second chamber connecting seat and the acquisition and control chamber, and the eighth sealing ring is disposed at the connection between the second chamber connecting seat and the battery compartment.

[0018] According to some embodiments of this application, a sealed chamber for a smart plunger in a gas well is provided, which further includes a control module and a pressure sensor. The control module is connected to a first chamber connecting seat, the pressure sensor is disposed on a second chamber connecting seat, and a sixth sealing ring is disposed between the pressure sensor and the second chamber connecting seat.

[0019] The second cabin connecting seat has a hole for connecting the sensing port of the pressure sensor to the outside.

[0020] A sealing chamber for a smart plunger in a gas well, provided according to some embodiments of this application, further includes a third sealing ring disposed at the connection between the drive mounting base and the drive chamber.

[0021] According to some embodiments of this application, a sealed chamber for a smart plunger in a gas well further includes a guide head and a battery, the battery being disposed within the battery compartment, the bottom of the battery compartment being connected to the guide head.

[0022] The beneficial effects of this invention are:

[0023] By connecting the drive compartment, acquisition and control compartment, battery compartment, drive mounting base, variable diameter plug internal support and drive mechanism, a sealed compartment is formed. The sealed compartment protects the detection sensor, variable diameter plug variable diameter adjustment drive mechanism, intelligent control electronic module and power supply battery from high pressure and environmental pollution.

[0024] The compartmentalized structural design facilitates battery maintenance and replacement, while also improving the overall pressure resistance of the sealed compartment and reducing processing difficulty and cost.

[0025] The drive mounting base integrates the installation of the drive mechanism inside the sealed chamber and the connection of the variable diameter plug outside the sealed chamber, and realizes the sealing of the chamber, making the overall structure compact and miniaturized. Attached Figure Description

[0026] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of the external structure of the smart plunger provided in some embodiments of this application;

[0028] Figure 2 This is a schematic diagram of the intelligent plunger sealing chamber structure provided in some embodiments of this application.

[0029] In the diagram: 1. Fishing head; 2. Variable diameter plug; 3. Drive chamber; 4. Collection and control chamber; 5. Battery compartment; 6. Guide head; 7. Internal support of variable diameter plug; 8. Push rod; 9. First sealing ring; 10. Second sealing ring; 11. Third sealing ring; 12. Drive mounting seat; 13. Drive mechanism; 14. Fourth sealing ring; 15. First chamber connecting seat; 16. Fifth sealing ring; 17. Control module; 18. Pressure sensor; 19. Sixth sealing ring; 20. Seventh sealing ring; 21. Second chamber connecting seat; 22. Eighth sealing ring; 23. Battery. Detailed Implementation

[0030] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] like Figure 1-2 As shown, the present invention provides a sealed chamber for a smart plunger in a gas well, comprising: a drive chamber 3, a data acquisition and control chamber 4, a battery chamber 5, a drive mounting base 12, a variable diameter plunger 2, and a variable diameter plunger internal support 7;

[0033] The battery compartment 5 is a cylindrical structure with a sealed bottom. One end of the acquisition and control compartment 4 is fixedly connected to the battery compartment 5, and one end of the drive compartment 3 is fixedly connected to the acquisition and control compartment 4. The drive compartment 3 is equipped with a drive mechanism 13. The drive mounting base 12 is coaxially mounted on the drive compartment 3. The variable diameter plug 2 is connected to the drive compartment 3. The variable diameter plug 2 is equipped with a variable diameter plug internal support 7. The variable diameter plug internal support 7 is coaxially mounted on the drive mounting base 12.

[0034] Among them, the battery compartment 5, the acquisition and control compartment 4, the drive compartment 3, and the variable diameter plug internal support 7 are interconnected and form a sealed compartment.

[0035] In practice, the drive compartment, data acquisition and control compartment, and battery compartment are connected from top to bottom. The three compartments are connected internally. The battery compartment 5 is a cylindrical shape with the bottom closed. The drive compartment 3 and data acquisition and control compartment 4 are approximately cylindrical. The upper port of the drive compartment 3 is connected to the drive mounting base 12. The drive mounting base 12 is also coaxially connected to the variable diameter plug internal support 7. The drive mechanism 13 is located inside the drive compartment 3 and is installed on the drive mounting base 12.

[0036] Specifically, the drive compartment 3, data acquisition and control compartment 4, and battery compartment 5 can all be opened separately. The compartmentalized structure design facilitates maintenance and battery replacement, while improving the overall pressure resistance of the sealed compartment and reducing processing difficulty and cost.

[0037] In some embodiments, the inner support 7 of the variable diameter plug and the drive mounting base 12 are both provided with central holes along the axial direction and are interconnected. The push rod 8 of the drive mechanism 13 can pass through the central hole of the drive mounting base 12 and enter the central hole of the inner support 7 of the variable diameter plug.

[0038] In specific implementation, both the drive mounting base 12 and the inner support 7 of the variable diameter plug have through holes at their centers and are interconnected. The push rod 8 of the drive mechanism 13 passes through the central hole of the drive mounting base 12 and enters the central hole of the inner support 7 of the variable diameter plug. Under the drive of the drive mechanism 13, the push rod 8 can move vertically up and down in the central hole of the inner support 7 of the variable diameter plug. Within the range of movement, the sealing chamber can maintain a sealed state.

[0039] In some embodiments, the system further includes a first sealing ring 9 and a second sealing ring 10. The first sealing ring 9 is disposed between the inner support 7 of the variable diameter plug and the push rod 8, and the second sealing ring is disposed at the connection between the drive mounting base 12 and the inner support 7 of the variable diameter plug.

[0040] In specific implementation, the first sealing ring 9 can be fitted onto the push rod 8. By setting the first sealing ring 9, the sealing performance between the inner support 7 of the variable diameter plug and the push rod 8 is improved. The second sealing ring 10 can be fitted onto the inner support 7 of the variable diameter plug. By setting the second sealing ring 10, the sealing performance between the drive mounting seat 12 and the inner support 7 of the variable diameter plug is improved.

[0041] In some embodiments, a third sealing ring 11 is also included, which is disposed at the connection between the drive mounting base 12 and the drive compartment 3.

[0042] In practice, the sealing performance at the connection between the drive mounting base 12 and the drive compartment 3 is improved by setting a third sealing ring 11.

[0043] In some embodiments, a first cabin connecting seat 15 is also included, which is coaxially disposed between the drive cabin 3 and the acquisition and control cabin 4.

[0044] In specific implementation, threaded interfaces are provided at both ends of the first cabin connecting seat 15, and the drive cabin 3 and the acquisition and control cabin 4 are threadedly connected by setting the first cabin connecting seat 15.

[0045] In some embodiments, a fourth sealing ring 14 and a fifth sealing ring 16 are also included. The fourth sealing ring 14 is disposed at the connection between the first cabin connecting seat 15 and the drive cabin 3, and the fifth sealing ring 16 is disposed at the connection between the first cabin connecting seat 15 and the acquisition and control cabin 4.

[0046] In practice, in order to improve the sealing performance of the threaded connection of the first hull connecting seat 15, a fourth sealing ring 14 and a fifth sealing ring 16 are set to improve the sealing effect of the threaded connection.

[0047] In some embodiments, a second cabin connecting seat 21 is also included, which is coaxially mounted between the acquisition and control cabin 4 and the battery cabin 5.

[0048] In specific implementation, threaded interfaces are also provided at both ends of the second cabin connecting seat 21. The acquisition and control cabin 4 and the battery cabin 5 are threadedly connected through the second cabin connecting seat 21. Furthermore, through holes are provided inside the first cabin connecting seat 15 and the second cabin connecting seat 21 along the axial direction for cables to pass through. After the three cabins, namely the drive cabin 3, the acquisition and control cabin 4 and the battery cabin 5, are connected in sequence through the first cabin connecting seat 15 and the second cabin connecting seat 21, their interiors are interconnected.

[0049] In some embodiments, a seventh sealing ring 20 and an eighth sealing ring 22 are also included. The seventh sealing ring 20 is disposed at the connection between the second cabin connecting seat 21 and the acquisition and control cabin 4, and the eighth sealing ring 22 is disposed at the connection between the second cabin connecting seat 21 and the battery cabin 5.

[0050] In practice, to improve the sealing performance of the threaded connection of the second hull connecting seat 21, a seventh sealing ring 20 and an eighth sealing ring 22 are set to enhance the sealing effect.

[0051] In some embodiments, the system further includes a control module 17 and a pressure sensor 18. The control module 17 is connected to the first cabin connecting seat 15, and the pressure sensor 18 is disposed on the second cabin connecting seat 21. A sixth sealing ring 19 is disposed between the pressure sensor 18 and the second cabin connecting seat 21. The second cabin connecting seat 21 has a hole for communicating the sensing port of the pressure sensor 18 with the outside.

[0052] In specific implementation, the acquisition and control cabin 4 is equipped with a pressure sensor 18 and a control module 17. The control module 17 is connected and fixed to the first cabin connecting seat 15. The pressure sensor 18 is installed on the second cabin connecting seat 21. The second cabin connecting seat 21 has a hole for installing the pressure sensor 18 for communication with the outside. After the pressure sensor 18 is installed, its sensing port is connected to the outside. The pressure sensor 18 is equipped with a sixth sealing ring 19 for sealing between itself and the second cabin connecting seat 21.

[0053] According to some embodiments of this application, a sealed chamber for a smart plunger in a gas well also includes a guide head 6 and a battery 23, wherein the battery 23 is disposed in a battery compartment 5 and the bottom of the battery compartment 5 is connected to the guide head 6.

[0054] In practice, the battery compartment 5 contains a battery 23. The bottom of the battery compartment 5 is connected to the guide head 6 of the intelligent plunger. The sealed compartment protects the detection sensor, the variable diameter plug adjustment drive mechanism, the intelligent control electronic module and the power supply battery from high pressure and environmental pollution. The drive mounting base 12 integrates the installation of the drive mechanism 13 inside the sealed compartment and the connection of the variable diameter plug 2 outside the sealed compartment, and realizes the sealing of the compartment. The overall structure is compact and miniaturized. In addition, the top of the variable diameter plug 2 can be equipped with a fishing head 1 for fishing in the sealed compartment during use.

[0055] In the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0058] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A sealed chamber for a smart plunger in a gas well, characterized in that, include: The battery compartment (5) has a cylindrical structure with a sealed bottom; The acquisition and control compartment (4) has one end fixedly connected to the battery compartment (5); The drive compartment (3) has one end fixedly connected to the acquisition and control compartment (4), and the drive compartment (3) is equipped with a drive mechanism (13); The drive mounting base (12) is coaxially mounted on the drive compartment (3); A variable diameter plug (2) is connected to the drive compartment (3). A variable diameter plug internal support (7) is provided inside the variable diameter plug (2). The variable diameter plug internal support (7) is coaxially mounted on the drive mounting base (12). The battery compartment (5), the acquisition and control compartment (4), the drive compartment (3), and the variable diameter plug internal support (7) are interconnected and form a sealed compartment.

2. The sealed chamber for a smart plunger in a gas well according to claim 1, characterized in that, The variable diameter plug inner support (7) and the drive mounting base (12) both have central holes along the axial direction and are interconnected. The push rod (8) of the drive mechanism (13) can pass through the central hole of the drive mounting base (12) and enter the central hole of the variable diameter plug inner support (7).

3. A sealed chamber for a smart plunger in a gas well according to claim 2, characterized in that, It also includes a first sealing ring (9) and a second sealing ring (10). The first sealing ring (9) is disposed between the inner support (7) of the variable diameter plug and the push rod (8), and the second sealing ring is disposed at the connection between the drive mounting base (12) and the inner support (7) of the variable diameter plug.

4. A sealed chamber for a smart plunger in a gas well according to claim 1, characterized in that, It also includes a first cabin connecting seat (15), which is coaxially disposed between the drive cabin (3) and the acquisition and control cabin (4).

5. A sealed chamber for a smart plunger in a gas well according to claim 4, characterized in that, It also includes a fourth sealing ring (14) and a fifth sealing ring (16). The fourth sealing ring (14) is disposed at the connection between the first cabin connecting seat (15) and the drive cabin (3), and the fifth sealing ring (16) is disposed at the connection between the first cabin connecting seat (15) and the acquisition control cabin (4).

6. A sealed chamber for a smart plunger in a gas well according to claim 5, characterized in that, It also includes a second cabin connecting seat (21), which is coaxially installed between the acquisition and control cabin (4) and the battery cabin (5).

7. A sealed chamber for a smart plunger in a gas well according to claim 6, characterized in that, It also includes a seventh sealing ring (20) and an eighth sealing ring (22). The seventh sealing ring (20) is disposed at the connection between the second cabin connecting seat (21) and the acquisition control cabin (4), and the eighth sealing ring (22) is disposed at the connection between the second cabin connecting seat (21) and the battery compartment (5).

8. A sealed chamber for a smart plunger in a gas well according to claim 7, characterized in that, It also includes a control module (17) and a pressure sensor (18). The control module (17) is connected to the first cabin connecting seat (15), and the pressure sensor (18) is disposed on the second cabin connecting seat (21). A sixth sealing ring (19) is disposed between the pressure sensor (18) and the second cabin connecting seat (21). The second cabin connecting seat (21) has a hole for connecting the sensing port of the pressure sensor (18) to the outside.

9. A sealed chamber for a smart plunger in a gas well according to claim 1, characterized in that, It also includes a third sealing ring (11), which is disposed at the connection between the drive mounting base (12) and the drive compartment (3).

10. A sealed chamber for a smart plunger in a gas well according to claim 1, characterized in that, It also includes a guide head (6) and a battery (23), the battery (23) being disposed inside the battery compartment (5), the bottom of the battery compartment (5) being connected to the guide head (6).

Images