Natural gas underground magnetofluid drainage device

Abstract

The utility model relates to the technical field of underground drainage, and discloses a natural gas underground magnetofluid drainage device which comprises underground energized polar plates, an underground conductive coil box and a cable box, and every four underground energized polar plates can form a section of drainage pipeline. The underground conductive coil boxes are fixedly connected to the outer sides of the underground energizing polar plates on the front side and the rear side of the drainage pipeline, the cable box is fixedly connected to the outer side of the underground energizing polar plate on one side of the drainage pipeline, an insulating plate is arranged on the periphery of the drainage pipeline, and a layer of underground protective outer cover is arranged on the outer side of the insulating plate. By arranging the underground energized polar plates, the underground conductive coil box, the cable box and other components, the device is energized through the cable, the two symmetrical underground energized polar plates generate an electric field, the conductive coil generates a magnetic field, formation water with high ion concentration moves upwards under Ampere force to be discharged, and the components are good in sealing performance and high in reliability. Safe and stable underground operation is guaranteed, operation is easy and convenient, and work is efficient.

Description

Technical Field

[0001] This utility model relates to the field of underground drainage technology, specifically a natural gas well downhole magnetohydrodynamic drainage device. Background Technology

[0002] During natural gas extraction, changes in the pressure and flow velocity of the natural gas within the well can lead to water accumulation, a condition known as "liquid accumulation in the gas well." This can reduce production efficiency and, in severe cases, even hinder extraction. Therefore, downhole drainage devices are necessary to assist in the process.

[0003] During the extraction process, there are natural gas wells with various degrees of liquid accumulation, especially complex well types such as deep wells, deviated wells, and horizontal wells, as well as gas wells with high formation water salinity and a large number of impurities. Existing drainage devices cannot be used for these complex situations at the same time. Moreover, their operation is mainly mechanical, resulting in high wear, short lifespan, and generally low drainage efficiency. Therefore, it is necessary to improve the existing devices. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a natural gas well downhole magnetohydrodynamic drainage device, which solves the problems mentioned in the background.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a natural gas well downhole magnetohydrodynamic drainage device, comprising a downhole electrode plate, a downhole conductive coil box, and a cable box, characterized in that: every four downhole electrode plates can form a drainage pipe section; the downhole conductive coil box is fixedly connected to the outer side of the downhole electrode plate on the front and rear sides of the drainage pipe; the cable box is fixedly connected to the outer side of the downhole electrode plate on one side of the drainage pipe; an insulating plate is provided around the drainage pipe; and a downhole protective cover is provided outside the insulating plate.

[0006] Preferably, the downhole electrode plate is a quarter-cylindrical shell structure with conductor grooves at both ends. A conductor rod is fixedly connected to one conductor groove of the downhole electrode plate, and the upper end of the conductor rod extends beyond the conductor groove at the lower end of the conductor rod by a length equal to the length of the conductor groove at the lower end of the conductor rod.

[0007] Preferably, a cable is fixedly connected to the top of the cable box, and there are wires inside the cable box leading to the downhole conductive coil box and the downhole electrode plate.

[0008] Preferably, the inner ring diameter of the annular connecting block is larger than that of the sliding column, and anti-slip sleeves are provided at both ends of the sliding column.

[0009] Preferably, the downhole protective cover is made of high-strength material, and the insulating plate is made of excellent insulating material.

[0010] This utility model provides a natural gas well downhole magnetohydrodynamic drainage device, which has the following beneficial effects:

[0011] (1) By setting up components such as downhole electrode plates, downhole conductive coil boxes and cable boxes, this utility model realizes that the device is energized by cables, so that the two symmetrical downhole electrode plates generate an electric field and the conductive coil generates a magnetic field, so that the formation water with high ion concentration moves upward under the Ampere force and is discharged, thereby improving the production efficiency of gas wells.

[0012] (2) The components of this utility model have a compact structure, which can adapt to the complex high temperature and high pressure environment downhole. Each component has good sealing performance, ensuring safe and stable operation downhole. The whole has good electromagnetic conversion efficiency and fluid dynamic performance, strong adaptability, simple operation and high efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the internal structure of this utility model;

[0014] Figure 2 This is a three-dimensional structural diagram of the entire utility model;

[0015] Figure 3 This is a three-dimensional structural diagram of the downhole electrode plate of this practical application;

[0016] Figure 4 This is a cross-sectional three-dimensional structural diagram of the downhole conductive coil box of this utility model;

[0017] In the diagram: 1. Downhole electrode plate; 2. Downhole conductive coil box; 3. Cable box; 4. Drainage pipe; 5. Insulating plate; 6. Protective cover; 7. Conductor groove; 8. Conductor rod; 9. Cable. Detailed Implementation

[0018] 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.

[0019] like Figure 1-4As shown, this utility model provides a technical solution: a natural gas well downhole magnetohydrodynamic drainage device, including a downhole electrode plate 1, a downhole conductive coil box 2, and a cable box 3. Every four downhole electrode plates 1 can form a drainage pipe 4. Downhole conductive coil boxes 2 are fixedly connected to the outer sides of the downhole electrode plates 1 on the front and rear sides of the drainage pipe 4. When the downhole electrode plates 1 and the downhole conductive coil boxes are energized, they generate electric and magnetic fields, thereby generating an upward Ampere force, which allows the downhole water to flow upward. A cable box 3 is fixedly connected to the outer side of the downhole electrode plate 1 on one side of the drainage pipe 4. An insulating plate 5 is provided around the drainage pipe 4 to reduce external interference and ensure the stability of the electric and magnetic fields inside the device. A downhole protective cover 6 is provided outside the insulating plate 5 to protect the device and prevent damage to components.

[0020] Furthermore, the downhole electrode plate 1 is a quarter-cylindrical shell structure with conductor grooves 7 at both ends. A conductor rod 8 is fixedly connected to one side of the conductor groove 7 of the downhole electrode plate 15, and the upper end of the conductor rod 8 extends beyond the conductor groove 7 at the lower end of the conductor rod 8 by a length equal to the length of the conductor groove 7 at the lower end of the conductor rod 8. The downhole electrode plates 1 can be tightly connected together, and the conductor rod 8 is hidden inside to avoid scratching and breakage. While providing safety protection, it also increases the contact area between the conductor rod 8 and the downhole electrode plate 1, and transmits current more effectively.

[0021] Furthermore, a cable 9 is fixedly connected to the top of the cable box 3, which facilitates the device being buried at a predetermined position at the bottom of the natural gas well. Inside the cable box 3, there are lines leading to the downhole conductive coil box 2 and the downhole electrode plate 1.

[0022] Furthermore, a wire is fixedly connected to one side of the downhole conductive coil box 2 and is connected to the coil inside the box. The coil inside the box is a tightly wound multi-layered spiral with a large radius. When energized, it can generate a strong magnetic field, thereby strengthening the Ampere force and improving the effect.

[0023] Furthermore, the downhole protective cover 6 is made of high-strength material, which can effectively protect the inside of the device and prevent damage and replacement from affecting the work process. The insulation plate 5 is made of excellent insulation material, which greatly reduces external interference and prevents the device from being significantly less effective.

[0024] In summary, the workflow of this utility model is as follows: First, the downhole electrode plates 1 are assembled into a section of pipe, and the conductor rod 8 is placed into the corresponding conductor groove 7 to ensure a tight connection. The downhole conductive coil box 2 is installed on the outer side in the front and rear directions, and the cable box 3 is installed on one side and the wires are connected. Then, the insulating plate 5 and the protective cover 6 are fixed on the outside of the drainage pipe 4 to form a series of devices. The magnetohydrodynamic drainage device is placed at the predetermined position at the bottom of the natural gas well, and the drainage pipe sections 4 are connected by the cable 9 to ensure that the connection between the downhole electrode plates 1 is tight. The sealing of the insulating plate 5 and the protective cover 6 is confirmed. Appropriate current, voltage and other parameters are set at the ground control center, and the power is turned on so that the coils inside the downhole electrode plates 1 and the downhole conductive coil box 2 are energized to generate an electromagnetic field. Due to the high ion concentration, the downhole water moves upward under the Ampere force and flows out through the drainage pipe 4 to the upper layer. The ground personnel adjust the parameters according to the real-time monitoring data to ensure that the device drains continuously and efficiently. Regular maintenance and inspection are carried out to ensure long-term stable operation.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A natural gas well downhole magnetohydrodynamic drainage device, comprising a downhole electrode plate (1), a downhole conductive coil box (2), and a cable box (3), characterized in that: The downhole electrode plate (1) can be composed of four pieces to form a drainage pipe (4). The downhole conductive coil box (2) is fixedly connected to the outside of the downhole electrode plate (1) on the front and rear sides of the drainage pipe (4). The cable box (3) is fixedly connected to the outside of the downhole electrode plate (1) on one side of the drainage pipe (4). An insulating plate (5) is provided around the drainage pipe (4). A layer of downhole protective cover (6) is provided outside the insulating plate (5).

2. The natural gas well downhole magnetohydrodynamic drainage device according to claim 1, characterized in that: The downhole electrode plate (1) is a quarter-cylindrical shell structure with conductor grooves (7) at both ends. A conductor rod (8) is fixedly connected to one side of the conductor groove (7) of the downhole electrode plate (1), and the upper end of the conductor rod (8) extends beyond the conductor groove (7) at the lower end of the conductor rod (8) by a length equal to the length of the conductor groove (7) at the lower end of the conductor rod (8).

3. The natural gas well downhole magnetohydrodynamic drainage device according to claim 1, characterized in that: The top of the cable box (3) is fixedly connected to a cable (9), and there are lines inside the cable box (3) leading to the downhole conductive coil box (2) and the downhole electrode plate (1).

4. A natural gas well downhole magnetohydrodynamic drainage device according to claim 1, characterized in that... The underground conductive coil box (2) has a wire fixedly connected to one side and connected to the coil inside the box. The coil inside the box is a tightly wound multi-layered spiral.

5. A natural gas well downhole magnetohydrodynamic drainage device according to claim 1, characterized in that: The downhole protective cover (6) is made of high-strength material, and the insulating plate (5) is made of excellent insulating material.

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