Underground drainage device facilitating drainage of gas well
By designing a liquid filling and preventing residue from being prevented, the PLC controller and motor drive winch is used to realize the quantitative and timely filling of the foaming agent and the automatic scraping of the pipe wall residue, the problem of foaming agent residue in the gas well drainage is solved and the drainage efficiency is improved.
Patent Information
- Application Number
- CN202421124074.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-05-22
AI Technical Summary
During the drainage process of gas wells, liquid will remain in the pipe wall when adding foaming agent, making it difficult to reduce the residual amount.
A liquid filling preventing device is designed, including a hinge block, a telescopic cylinder, a rotating component, a sealing component and a residual preventing component. The winch is driven by a PLC controller and a motor to realize the quantitative and timed replenishment of the foaming agent and the automatic scraping of the pipe wall residual agent.
It effectively reduces the residual amount in the pipe wall when filling the foaming agent liquid, and improves the efficiency and convenience of gas well drainage.
Smart Images
Figure CN222936720U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas well drainage, and particularly relates to a downhole drainage device convenient for gas well drainage. Background Technique
[0002] With the continuous improvement of the country's economic strength, the social demand for natural gas is increasing day by day. During the exploitation of natural gas, as the gas pressure of natural gas continuously decreases, the groundwater in the gas storage layer will continuously deposit at the bottom of the well to form liquid accumulation, thus causing huge water pressure on the gas storage layer. If the accumulated water at the bottom of the well cannot be drained in time, it will eventually lead to the complete shutdown of the gas production well over time, causing a huge obstacle to the exploitation of the gas field.
[0003] The foam drainage gas production process technology mainly adds a foaming agent at the bottom of the gas well, so that the accumulated water in the well can react with the foaming agent to produce sufficient foam, thereby reducing the surface tension of the liquid accumulation. At the same time, under the action of the gas pressure of natural gas, these foams leave the well.
[0004] The above-mentioned foam drainage gas production process technology mainly adds a foaming agent at the bottom of the gas well, so that the accumulated water in the well can react with the foaming agent to produce sufficient foam and make these foams leave the well. However, when adding the foaming agent, liquid residue will remain in the pipe wall, so it is not convenient to reduce the residual foaming agent liquid in the pipe wall. Content of the Utility Model
[0005] The utility model mainly provides a downhole drainage device convenient for gas well drainage to solve the technical problems mentioned in the above background technique.
[0006] The technical solution adopted by the utility model to solve the above technical problems is: a downhole drainage device convenient for gas well drainage, including a pipe body and a feed inlet provided on one side of the pipe body, and a liquid filling anti-residue device is provided in the pipe body;
[0007] The liquid filling anti-residue device includes a hinge block provided in the pipe body, a telescopic cylinder connected by hinge on one side of the hinge block, a rotating part provided at the execution end of the telescopic cylinder, a sealing part provided on the rotating part, and an anti-residue part provided on the outer wall of the pipe body.
[0008] Preferably, the rotating part includes a rotating block with one end provided at the execution end of the telescopic cylinder and connected by hinge, and the other end of the rotating block is provided with a connecting shaft, and the connecting shaft penetrates through a first fixing block in the pipe body.
[0009] Preferably, the sealing part includes a connecting rod provided on the connecting shaft, a circular cover is provided at one end of the connecting rod, and a rubber pad is provided on one side of the circular cover.
[0010] Preferably, the anti-residue component includes second fixing blocks symmetrically arranged on the outer wall of the pipe body. A winch is arranged between the symmetrically arranged second fixing blocks. A connecting rope is arranged on the winch. One end of the connecting rope penetrates through the pipe body and is provided with a gravity block. A motor is arranged on one side of the second fixing block, and the execution end of the motor is connected to one end of the winch.
[0011] Preferably, a PVC plus polyurethane anti-adhesion layer is arranged on the inner wall of one side of the pipe body.
[0012] Preferably, an ultrasonic sensor is arranged at the bottom of the inner wall on one side of the pipe body
[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0014] The present utility model is a device for facilitating the reduction of residues remaining in the pipe wall when adding foaming agent liquid.
[0015] In the present utility model, a foaming agent is injected into the pipe body through a liquid filling anti-residue device, which facilitates the sealing or opening of the feed port, so that the foaming agent is automatically filled quantitatively and regularly according to the liquid level in the well, in order to scrape off the agent liquid remaining on the inner wall when filling the foaming agent, thereby reducing the residual agent on the pipe wall.
[0016] The following will explain the present utility model in detail in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 Is an axonometric view of the overall structure of the present utility model.
[0018] Figure 2 Is a cross-sectional view of the overall structure of the present utility model.
[0019] Figure 3 Is an enlarged view of the liquid filling anti-residue device of the present utility model.
[0020] Figure 4 Is an enlarged view of the anti-residue component of the present utility model.
[0021] BRIEF DESCRIPTION OF THE DRAWINGS: 10. Pipe body; 101. PVC plus polyurethane anti-adhesion layer; 102. Ultrasonic sensor; 11. Feed port; 20. Liquid filling anti-residue device; 21. Hinge block; 22. Telescopic cylinder; 23. Rotating component; 231. Rotating block; 232. Connecting shaft; 233. First fixing block; 24. Sealing component; 241. Connecting rod; 242. Circular cover; 243. Rubber pad; 25. Anti-residue component; 251. Second fixing block; 252. Winch; 253. Connecting rope; 254. Gravity block; 255. Motor. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] Please refer to the attached Figure 1 , 2 As shown in FIGS. Figure 1 and 2 and FIG. 3, a downhole drainage device for facilitating gas well drainage in the present utility model includes a pipe body 10, and a feed inlet 11 provided on one side of the pipe body 10. A liquid filling anti-residue device 20 is provided inside the pipe body 10. The liquid filling anti-residue device 20 includes a hinge block 21 provided inside the pipe body 10. A telescopic cylinder 22 is provided on one side of the hinge block 21 through hinge connection. A rotating member 23 is provided at the execution end of the telescopic cylinder 22. A sealing member 24 is provided on the rotating member 23. The rotating member 23 includes a rotating block 231 with one end provided at the execution end of the telescopic cylinder 22 through hinge connection. The other end of the rotating block 231 is provided with a connecting shaft 232. The connecting shaft 232 penetrates through a first fixing block 233 inside the pipe body 10. The sealing member 24 includes a connecting rod 241 provided on the connecting shaft 232. One end of the connecting rod 241 is provided with a circular cover 242. A rubber pad 243 is provided on one side of the circular cover 242. An ultrasonic sensor 102 is provided at the bottom of the inner wall on one side of the pipe body 10.
[0023] In this embodiment, when it is necessary to drain water in the gas well, when the ultrasonic sensor 102 senses a certain water level, it sends a signal to the PLC controller. The PLC controller triggers the telescopic cylinder 22 to drive the connecting shaft 232 connected to the rotating block 231 to contract. At this time, the rotating block 231 drives the circular cover 242 on the connecting shaft 232 to rotate upward, thereby opening the circular cover 242 in the sealing feed inlet 11. The PLC controller triggers the pneumatic pump to transport the foaming agent from the feed inlet 11 to the inside of one side of the pipe body 10. Among them, when it is necessary to close the circular cover 242, the PLC controller triggers the telescopic cylinder 22 to drive the connecting shaft 232 connected to the rotating block 231 to extend. At this time, the rotating block 231 drives the circular cover 242 on the connecting shaft 232 to rotate downward until the feed inlet 11 is sealed.
[0024] Please refer to the attached Figure 1 , 2 As shown in FIGS. Figure 1 and 2 and FIG. 3, in a preferred embodiment of the present utility model, an anti-residue component 25 is provided on the outer wall of the pipe body 10. The anti-residue component 25 includes second fixing blocks 251 symmetrically provided on the outer wall of the pipe body 10. A winch 252 is provided between the symmetrically provided second fixing blocks 251. A connecting rope 253 is provided on the winch. One end of the connecting rope 253 penetrates through the pipe body 10 and is provided with a gravity block 254. A motor 255 is provided on one side of the second fixing block 251. The execution end of the motor 255 is connected to one end of the winch 252. A PVC plus polyurethane anti-adhesion layer 101 is provided on the inner wall of one side of the pipe body 10.
[0025] In this embodiment, when the foaming agent is injected into one side of the pipe body 10, the liquid slides down along the PVC plus polyurethane anti-adhesion layer 101, reducing the liquid remaining in the pipe wall. After adding a certain amount of bubble liquid, the PLC controller triggers the motor 255 to drive the winch 252 to rotate clockwise. At this time, the connecting rope 253 on the winch 252 drives the gravity block 254 to extend downward along the pipe wall, which serves to scrape off the residual agent on the pipe wall and reduce the residual agent liquid on the pipe wall. The PLC controller triggers the motor 255 to drive the winch 252 to rotate counterclockwise, driving the gravity block 254 on the connecting rope 253 to retract. The dosage of the injected foaming agent can be set as needed, so as to facilitate the automatic timing and quantitative injection of the foaming agent, and to continue the production work after the bubbles are discharged.
[0026] The specific process of the present utility model is as follows:
[0027] The model of the PLC controller is "AP-120BR", and the ultrasonic sensor is "SU18R-M1MN-F".
[0028] First, when it is necessary to drain water in the gas well, when the ultrasonic sensor 102 senses a certain water level, it sends a signal to the PLC controller. The PLC controller triggers the telescopic cylinder 22 to drive the connecting shaft 232 connected to the rotating block 231 to contract. At this time, the rotating block 231 drives the circular cover 242 on the connecting shaft 232 to rotate upward, thereby opening the circular cover 242 in the sealed feed port 11. The PLC controller triggers the pneumatic pump to transport the foaming agent from the feed port 11 to one side of the pipe body 10.
[0029] Second, when it is necessary to close the circular cover 242, the PLC controller triggers the telescopic cylinder 22 to drive the connecting shaft 232 connected to the rotating block 231 to extend. At this time, the rotating block 231 drives the circular cover 242 on the connecting shaft 232 to rotate downward until the feed port 11 is sealed.
[0030] Finally, when the foaming agent is injected into one side of the pipe body 10, the liquid slides down along the PVC plus polyurethane anti-adhesion layer 101, reducing the liquid remaining in the pipe wall. After adding a certain amount of bubble liquid, the PLC controller triggers the motor 255 to drive the winch 252 to rotate clockwise. At this time, the connecting rope 253 on the winch 252 drives the gravity block 254 to extend downward along the pipe wall, which serves to scrape off the residual agent on the pipe wall and reduce the residual agent liquid on the pipe wall. The PLC controller triggers the motor 255 to drive the winch 252 to rotate counterclockwise, driving the gravity block 254 on the connecting rope 253 to retract. The dosage of the injected foaming agent can be set as needed, so as to facilitate the automatic timing and quantitative injection of the foaming agent, and to continue the production work after the bubbles are discharged.
Claims
1. A downhole drainage device for facilitating drainage of a gas well, comprising a pipe body (10) and a feed port (11) arranged on one side of the pipe body (10), characterized in that , a liquid filling and residue prevention device (20) is provided in the tube body (10); The liquid filling residue prevention device (20) comprises a hinge block (21) arranged in the tube body (10), a telescopic cylinder (22) connected by hinge is provided on one side of the hinge block (21), a rotating component (23) is provided at the execution end of the telescopic cylinder (22), a sealing component (24) is provided on the rotating component (23), and a residue prevention component (25) is provided on the outer wall of the tube body (10).
2. A downhole drainage device for facilitating drainage of a gas well according to claim 1, characterized in that: The rotating component (23) comprises a rotating block (231) having one end arranged at the actuating end of the telescopic cylinder (22) and connected by hinge, and a connecting shaft (232) is provided at the other end of the rotating block (231), and the connecting shaft (232) passes through a first fixed block (233) in the tube body (10).
3. The downhole drainage device for facilitating gas well drainage according to claim 2, characterized in that: The sealing component (24) comprises a connecting rod (241) arranged on the connecting shaft (232), one end of the connecting rod (241) is provided with a circular sealing cover (242), and one side of the circular sealing cover (242) is provided with a rubber pad (243).
4. The downhole drainage device for facilitating gas well drainage according to claim 1, characterized in that: The anti-residue component (25) comprises a second fixing block (251) symmetrically arranged on the outer wall of the tube body (10), a winch (252) is passed through between the symmetrically arranged second fixing blocks (251), a connecting rope (253) is provided on the winch, one end of the connecting rope (253) passes through the tube body (10) and is provided with a gravity block (254), a motor (255) is provided on one side of the second fixing block (251), and an actuator end of the motor (255) is connected to one end of the winch (252).
5. The downhole drainage device for facilitating drainage of gas wells according to claim 1, characterized in that: A PVC plus polyurethane anti-adhesion layer (101) is provided on the inner wall of one side of the tube body (10).
6. The downhole drainage device for facilitating drainage of a gas well according to claim 1, characterized in that: An ultrasonic sensor (102) is provided at the bottom of the inner wall of one side of the tube body (10).