Downward drilling drainage device
By designing a downhole drainage device that combines a T-junction pipe and a compressed air system, automated timed drainage is achieved, solving the problem of water accumulation during underground gas extraction, improving efficiency and reducing labor costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LONGDING IND & TRADE CO LTD HONGGUO DEV ZONE LIUPANSHUI CITY
- Filing Date
- 2025-08-30
- Publication Date
- 2026-07-10
AI Technical Summary
The existing underground gas drainage boreholes suffer from severe water accumulation, leading to borehole collapse and affecting gas drainage efficiency. Furthermore, relying on manual drainage is inefficient and costly.
Design a downhole drainage device that combines a T-pipe, a compressed air system, and a PLC control box. By integrating timed drainage and the compressed air system, it can achieve automated drainage and reduce the frequency of manual inspection.
It improved drainage efficiency, reduced labor intensity, ensured gas extraction effectiveness, and reduced labor costs.
Smart Images
Figure CN224478951U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of gas extraction technology, and more specifically, to a downhole drainage device. Background Technology
[0002] The existing downhole gas drainage boreholes suffer from severe water accumulation, which can cause borehole collapse and seriously affect gas drainage efficiency. Therefore, active drainage measures must be taken for the downholes to ensure drainage effectiveness. Currently, water drainage in downholes mainly relies on manual labor or simple machinery. In actual operation, many boreholes have a large amount of water accumulation. Relying on manual drainage not only increases labor costs but also fails to remove the water in the borehole in a timely manner, affecting the gas drainage effect. Summary of the Invention
[0003] The purpose of this application is to provide a downhole drilling drainage device that can solve the technical problem of low efficiency in manual drainage operations.
[0004] This application provides a downhole drilling drainage device, including a tee pipe and a compressed air system. The tee pipe is connected to a drain pipe, an exhaust pipe, and a extraction pipe. A drain valve is installed on the drain pipe, an exhaust valve is installed on the exhaust pipe, and a water blowing pipe is installed inside the extraction pipe. The compressed air system includes an air supply pipe, a pneumatic angle seat valve, a compressed air pipe, and a flexible hose. A solenoid valve is installed on the air supply pipe, the pneumatic angle seat valve is located between the air supply pipe and the compressed air pipe, and the flexible hose is located between the compressed air pipe and the water blowing pipe.
[0005] Preferably, the compressed air system further includes an oil mist lubricator, which is installed on the air supply pipe.
[0006] Preferably, the compressed air system further includes a steam-water separator, which is installed on the air supply pipe.
[0007] Preferably, the solenoid valve is an intrinsically safe pneumatic solenoid valve for mining applications.
[0008] Preferably, each of the compressed air pipes is provided with multiple flexible hoses, and multiple extraction pipes are provided, with the number of extraction pipes being the same as the number of flexible hoses and arranged in a one-to-one correspondence.
[0009] Preferably, the compressed air pipe is connected to the flange of the pneumatic angle seat valve.
[0010] The beneficial effects of this utility model are:
[0011] The down-drilling drainage device provided by this utility model integrates the extraction system and the drainage system, so that drainage and gas extraction do not affect each other. Furthermore, the working time and cycle of the compressed air system can be set through the PLC control box, so that the compressed air system can work on a timed basis and achieve timed drainage, thereby reducing the labor intensity of frequent inspections and improving work efficiency. Attached Figure Description
[0012] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the structure of the medium-pressure air system of this utility model;
[0014] Figure 2 This is a schematic diagram of the drainage principle of this utility model.
[0015] The reference numerals in the attached figures are as follows:
[0016] 1. Tee pipe; 2. Compressed air system; 3. Drain pipe; 4. Exhaust pipe; 5. Extraction pipe; 6. Drain valve; 7. Exhaust valve; 8. Water blowing pipe; 9. Air supply pipe; 10. Pneumatic angle seat valve; 11. Compressed air pipe; 12. Hose; 13. Solenoid valve; 14. Oil mist lubricator; 15. Steam-water separator; 16. PLC control box; 17. Coal seam. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0018] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0020] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0021] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0022] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 application based on the specific circumstances.
[0023] Example
[0024] like Figure 1 and Figure 2 As shown in the figure, this application embodiment provides a downhole drainage device, including a three-way pipe 1 and a compressed air system 2. The compressed air system 2 is connected to a PLC control box 16, and the PLC control box 16 is connected to and controls the multi-channel compressed air system 2. The three-way pipe 1 is connected to a drain pipe 3, an exhaust pipe 4 and an extraction pipe 5. A drain valve 6 is provided on the drain pipe 3, an exhaust valve 7 is provided on the exhaust pipe 4, and a water blowing pipe 8 is provided in the extraction pipe 5. The compressed air system 2 includes an air supply pipe 9, a pneumatic angle seat valve 10, a compressed air pipe 11 and a hose 12. A solenoid valve 13 is provided on the air supply pipe 9, the pneumatic angle seat valve 10 is located between the air supply pipe 9 and the compressed air pipe 11, and the hose 12 is located between the compressed air pipe 11 and the water blowing pipe 8.
[0025] During drainage, close the exhaust valve 7, open the drain valve 6 and the solenoid valve 13, and the air supply pipe sends compressed air from the air compressor into the pneumatic angle seat valve 10. Under the action of the compressed air, the pneumatic angle seat valve 10 opens and connects the compressed air pipe 11. The compressed air enters the water blowing pipe 8 in the extraction pipe 5 through the hose 12 and enters the gas borehole through the water blowing pipe 8. The water accumulated in the gas borehole is discharged through the drain pipe 3 under the action of the compressed air. After the drainage is completed, close the drain valve 6 and the solenoid valve 13, and open the exhaust valve 7 to start gas extraction.
[0026] In this embodiment, the compressed air system 2 also includes an oil mist lubricator 14, which is installed on the air supply pipe 9. The oil mist lubricator 14 is used to provide controllable oil mist lubrication for the pneumatic angle seat valve 10 and the solenoid valve 13, so as to reduce friction, prevent wear and extend the service life of the pneumatic angle seat valve 10 and the solenoid valve 13.
[0027] In this embodiment, the compressed air system 2 also includes a steam-water separator 15, which is installed on the air supply pipe 9. The steam-water separator 15 is used to remove moisture, oil mist and other liquid contaminants from the compressed air, ensuring a dry and clean air supply, thereby protecting the pneumatic angle seat valve 10, extending the service life of the pneumatic angle seat valve 10 and improving the system reliability.
[0028] In this embodiment, the solenoid valve 13 is an intrinsically safe pneumatic solenoid valve for mining.
[0029] In this embodiment, each compressed air pipe 11 is provided with multiple flexible hoses 12, and multiple extraction pipes 5 are provided. The number of extraction pipes 5 is the same as the number of flexible hoses 12 and they are arranged in a one-to-one correspondence.
[0030] In this embodiment, the compressed air pipe 11 is connected to the flange of the pneumatic angle seat valve 10.
[0031] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A drainage device for downhole drilling, characterized in that: The system includes a T-junction and a compressed air system. The T-junction is connected to a drain pipe, an exhaust pipe, and an extraction pipe. A drain valve is installed on the drain pipe, an exhaust valve is installed on the exhaust pipe, and a water blowing pipe is installed inside the extraction pipe. The compressed air system includes an air supply pipe, a pneumatic angle seat valve, a compressed air pipe, and a flexible hose. A solenoid valve is installed on the air supply pipe, the pneumatic angle seat valve is located between the air supply pipe and the compressed air pipe, and the flexible hose is located between the compressed air pipe and the water blowing pipe.
2. The downhole drainage device according to claim 1, characterized in that: The compressed air system also includes an oil mist lubricator, which is installed on the air supply pipe.
3. A downhole drainage device according to claim 2, characterized in that: The compressed air system also includes a steam-water separator, which is installed on the air supply pipe.
4. A downhole drainage device according to claim 1, characterized in that: The solenoid valve is an intrinsically safe pneumatic solenoid valve for mining applications.
5. A downhole drainage device according to claim 1, characterized in that: Each of the compressed air pipes is provided with multiple flexible hoses, and multiple extraction pipes are provided. The number of extraction pipes is the same as the number of flexible hoses and they are arranged in a one-to-one correspondence.
6. A downhole drainage device according to claim 1, characterized in that: The compressed air pipe is connected to the flange of the pneumatic angle seat valve.