Intelligent formulated anti-foaming agent system for well site

Abstract

The utility model belongs to and oil and gas exploitation technical field, especially relates to a kind of for well station's intelligent preparation defoaming agent system. Including foaming agent mixed medicine subassembly, defoaming agent mixed medicine subassembly, water supplement component and controller;The foaming agent mixed medicine subassembly includes and foaming agent mixed solution tank that foaming agent stock solution tank is connected in proper order by first pipeline;The defoaming agent mixed medicine subassembly includes and defoaming agent mixed solution tank that defoaming agent stock solution tank is connected in proper order by second pipeline;The water supplement component includes water storage tank, the water storage tank with the foaming agent mixed solution tank is communicated by third pipeline, the water storage tank with the defoaming agent mixed solution tank is communicated by fourth pipeline;In working condition, the controller controls the foaming agent stock solution tank to the foaming agent mixed solution tank and supplement liquid;Control the defoaming agent stock solution tank to the defoaming agent mixed solution tank and supplement liquid, control the water storage tank water storage, respectively control the foaming agent mixed solution tank and the defoaming agent mixed solution tank's liquid dilution.

Description

Technical Field

[0001] This utility model belongs to the field of oil and gas extraction technology, and specifically relates to an intelligent anti-foaming agent preparation system for well sites. Background Technology

[0002] To ensure stable production in older shale gas wells, a foaming and injection process is often employed to maintain normal production. This requires the regular and quantitative injection of defoaming agents in large quantities. Each barrel of defoaming agent weighs 25 kg. The main component of the foaming agent is a surfactant, while the main component of the defoamer is polyether. Both are quite viscous, and skin contact with either agent is not recommended. Currently, well sites primarily use manual extraction and preparation methods. Operators manually extract the concentrate from the container and pour it into a mixing tank. Then, water is injected to dilute the concentrate according to a specific ratio, completing the defoaming agent preparation. However, this manual preparation method has several problems. For example, transporting the concentrate is laborious and time-consuming. Some well sites lack water sources or have low water flow, leading to prolonged dilution times. The agent is prone to spillage during pouring, and the labor intensity is high, making it difficult for a single well site worker to complete. Furthermore, manual extraction and preparation makes it difficult to accurately control the dosage and water injection volume, resulting in inaccurate dilution and affecting the process effectiveness. Therefore, how to effectively solve the problems of long preparation time and low efficiency in the preparation of defoaming agents at well sites is a technical problem that urgently needs to be solved.

[0003] To address the issue of preparing anti-foaming agents for well sites, several alternative preparation methods have been proposed and applied, such as using pumps to extract the concentrate for preparation. However, these methods have several drawbacks, including difficulty in accurately controlling the dosage of the concentrate and the amount of water injected, inaccurate dilution affecting process effectiveness, low preparation efficiency, high labor intensity, and high labor costs, making them unsuitable for large-scale applications.

[0004] These shortcomings and deficiencies mean that existing defoaming agent preparation methods are not fully applicable to shale gas wells employing foam drainage injection processes, and are unsuitable for large-scale application and promotion at similar well sites. Currently, no relevant systems, devices, or methods have been developed to address the issue of how to quickly, efficiently, and cost-effectively prepare defoaming agents. Utility Model Content

[0005] The purpose of this invention is to overcome the technical defects of existing technologies, such as low efficiency in preparing defoaming agents for well sites and high labor costs due to low preparation efficiency, and to provide an intelligent defoaming agent preparation system for well sites.

[0006] This utility model provides an intelligent defoaming agent preparation system for well stations, including a foaming agent mixing component, an antifoaming agent mixing component, a water replenishment component, and a controller;

[0007] The foaming agent mixing assembly includes a foaming agent concentrate tank and a foaming agent mixture tank connected in sequence via a first pipeline;

[0008] The defoamer mixing assembly includes a defoamer concentrate tank and a defoamer mixture tank connected in sequence via a second pipeline;

[0009] The water replenishment component includes a water storage tank, which is connected to the foaming agent mixture tank via a third pipeline, and the water storage tank is connected to the defoamer mixture tank via a fourth pipeline;

[0010] In operation, the controller controls the foaming agent concentrate tank to replenish the foaming agent mixture tank; controls the defoamer concentrate tank to replenish the defoamer mixture tank; controls the water storage tank to store water; and controls the dilution of the chemical solutions in the foaming agent mixture tank and the defoamer mixture tank, respectively.

[0011] This invention provides an intelligent drug preparation system that, under specific conditions, enables the preparation of anti-foaming agents locally or remotely. This achieves a more intelligent, information-based, and precise method of anti-foaming agent preparation, effectively reducing labor costs and significantly improving preparation efficiency. The system is more intelligent, information-based, and precise, suitable for various shale gas well stations employing foam drainage and injection processes, and allows for centralized management; it also boasts low labor costs and significantly improved preparation efficiency.

[0012] As a preferred embodiment of this utility model, a first level gauge is provided in the foaming agent mixture tank; and a second level gauge is provided in the defoamer mixture tank.

[0013] Preferably, both the first level gauge and the second level gauge are magnetic float level gauges, and the magnetic float level gauge converts the level signal into an electrical signal and transmits it to the controller via a transmitter.

[0014] In this solution, the first and second level gauges can detect the liquid level in the foaming agent mixture tank or the defoamer mixture tank in real time. When the liquid level in the foaming agent mixture tank drops to the initially set reference value, the controller will issue a command to replenish the foaming agent mixture tank with the liquid from the foaming agent concentrate tank. Similarly, when the liquid level in the defoamer mixture tank drops to the initially set reference value, the controller will issue a command to replenish the defoamer mixture tank with the liquid from the defoamer concentrate tank.

[0015] More preferably, a first self-priming centrifugal pump is provided between the foaming agent concentrate tank and the foaming agent mixture tank, and a second self-priming centrifugal pump is provided between the defoamer concentrate tank and the defoamer mixture tank; the controller is used to control the opening and closing of the first self-priming centrifugal pump and the second self-priming centrifugal pump.

[0016] When the liquid level in the foaming agent mixture tank drops to the reference value, the controller receives an electrical signal from the first level gauge and sends a start signal to the first self-priming centrifugal pump to replenish the solution. When the amount of solution added to the foaming agent mixture tank reaches the set value, the first self-priming centrifugal pump automatically stops.

[0017] When the liquid level in the defoamer mixture tank drops to the reference value, the controller receives an electrical signal from the output of the second level gauge and sends a start signal to the second self-priming centrifugal pump to replenish the liquid. When the amount of defoamer added to the tank reaches the set value, the second self-priming centrifugal pump automatically stops.

[0018] More preferably, the first pipeline is equipped with a first solenoid valve, and the second pipeline is equipped with a second solenoid valve; the controller is used to control the opening and closing of the first solenoid valve and the second solenoid valve.

[0019] After the foaming agent mixture tank and the defoamer mixture tank are filled with their respective solutions, the controller sends a start signal to the first and second solenoid valves to dilute the foaming agent and defoamer with water. When the liquid level reaches the corresponding injection volume, the system automatically closes the first and second solenoid valves.

[0020] Preferably, a float switch is installed at the water inlet of the water storage tank, and a water valve is installed on the water pipe connected to the water inlet of the water storage tank. The controller is electrically connected to the water valve. When the water level in the water storage tank drops, the water valve opens to store water into the water storage tank. By adding a water storage tank to store sufficient water, the dilution time is reduced, and the addition of a float switch at the water inlet of the water storage tank realizes the automatic water storage function.

[0021] Preferably, the water storage tank is positioned above the foaming agent mixing assembly and the defoaming agent mixing assembly. By optimizing their spatial relationship, the water dilution function is achieved using the principle of liquid level difference.

[0022] Preferably, the controller is an RTU telemetry terminal.

[0023] In this invention, the foaming agent magnetic float level gauge and the defoaming agent magnetic float level gauge are used to monitor the liquid level in the foaming agent mixing tank and the defoaming agent mixing tank in real time, respectively, and feed the liquid level value back to the RTU telemetry terminal via an electrical signal. When the liquid level in the foaming agent mixing tank or the defoaming agent mixing tank is lower than the reference value set by the RTU telemetry terminal, the RTU telemetry terminal will control the foaming agent explosion-proof self-priming centrifugal pump or the defoaming agent explosion-proof self-priming centrifugal pump to start. When the liquid level in the foaming agent mixing tank or the defoaming agent mixing tank reaches the set value, the RTU telemetry terminal will control the foaming agent explosion-proof self-priming centrifugal pump or the defoaming agent explosion-proof self-priming centrifugal pump to shut down. After the agent concentrate is added, the system automatically opens the solenoid valve to inject water from the tap water tank to the mixing tank according to the set dilution ratio. When the liquid level reaches the set water injection volume, the system automatically closes the solenoid valve, and the intelligent defoaming agent preparation operation is completed. The system features remote and on-site automatic preparation of pharmaceuticals, is highly versatile, and has three main functions: automatic water storage, real-time liquid level monitoring, and intelligent preparation of pharmaceuticals. It effectively solves the technical problems of long preparation time and low efficiency of antifoaming agents.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] This invention provides an intelligent drug preparation system that, under specific conditions, enables the preparation of anti-foaming agents locally or remotely. This achieves a more intelligent, information-based, and precise method of anti-foaming agent preparation, effectively reducing labor costs and significantly improving preparation efficiency. The system is more intelligent, information-based, and precise, suitable for various shale gas well stations employing foam drainage and injection processes, and allows for centralized management; it also boasts low labor costs and significantly improved preparation efficiency. Attached Figure Description

[0026] Fig. 1 This is a schematic diagram of the intelligent antifoaming agent preparation system for well stations according to this utility model.

[0027] Fig. 2 This is a schematic diagram of the intelligent antifoaming agent preparation system for well stations according to this utility model.

[0028] Fig. 3 This is a schematic diagram of the intelligent antifoaming agent preparation system for well stations according to this utility model.

[0029] Marked in the image:

[0030] 100: Foaming agent mixing component; 200: Defoaming agent mixing component; 300: Water replenishment component; 400: Controller.

[0031] 1: Foaming agent concentrate tank; 2: Defoaming agent concentrate tank; 3: First self-priming centrifugal pump; 4: Second self-priming centrifugal pump; 5: Foaming agent mixture tank; 6: Defoaming agent mixture tank; 7: First level gauge; 8: Second level gauge; 9: Float switch; 10: Water storage tank; 11: First solenoid valve; 12: Second solenoid valve; 13: Water valve; 14: First pipeline; 15: Second pipeline; 16: Third pipeline; 17: Fourth pipeline. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0033] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0035] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0036] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0037] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0038] Example 1

[0039] This embodiment provides an intelligent anti-foaming agent preparation system for well sites, combined with... Figs. 1-3 As shown, the system includes a foaming agent mixing assembly 100, an antifoaming agent mixing assembly 200, a water replenishment assembly 300, and a controller 400. The foaming agent mixing assembly 100 includes a foaming agent concentrate tank 1 and a foaming agent mixture tank 5 connected in sequence via a first pipeline 14. The antifoaming agent mixing assembly 200 includes an antifoaming agent concentrate tank 2 and an antifoaming agent mixture tank 6 connected in sequence via a second pipeline 15.

[0040] Specifically, the foaming agent mixture tank 5 is equipped with a first level gauge 7; the defoamer mixture tank 6 is equipped with a second level gauge 8. Both the first level gauge 7 and the second level gauge 8 are magnetic float level gauges, which convert the level signal into an electrical signal via a transmitter and transmit it to the controller 400. The first level gauge 7 and the second level gauge 8 can detect the liquid level in the foaming agent mixture tank 5 or the defoamer mixture tank 6 in real time. When the liquid level in the foaming agent mixture tank 5 drops to the initially set reference value, the controller 400 will issue a command to replenish the foaming agent mixture tank 5 with the solution from the foaming agent concentrate tank 1; similarly, when the liquid level in the defoamer mixture tank 6 drops to the initially set reference value, the controller 400 will issue a command to replenish the defoamer mixture tank 6 with the solution from the defoamer concentrate tank 2.

[0041] A first self-priming centrifugal pump 3 is provided between the foaming agent concentrate tank 1 and the foaming agent mixture tank 5, and a second self-priming centrifugal pump 4 is provided between the defoamer concentrate tank 2 and the defoamer mixture tank 6; the controller 400 is electrically connected to the first self-priming centrifugal pump 3 and the second self-priming centrifugal pump 4 respectively.

[0042] When the liquid level in the foaming agent mixture tank 5 drops to the reference value, the controller 400 receives the electrical signal output from the first level gauge 7 and sends a start signal to the first self-priming centrifugal pump 3 to replenish the liquid. When the amount of liquid added to the foaming agent mixture tank 5 reaches the first set value, the first self-priming centrifugal pump 3 automatically stops pumping.

[0043] When the liquid level in the defoamer mixture tank 6 drops to the reference value, the controller 400 receives the electrical signal output from the second level gauge 8 and sends a start signal to the second self-priming centrifugal pump 4 to replenish the liquid. When the amount of liquid added to the defoamer mixture tank 6 reaches the second set value, the second self-priming centrifugal pump 4 automatically stops pumping.

[0044] The first pipeline 14 is equipped with a first solenoid valve 11, and the second pipeline 15 is equipped with a second solenoid valve 12; the controller 400 is electrically connected to the first solenoid valve 11 and the second solenoid valve 12 respectively.

[0045] After the foaming agent mixture tank 5 and the defoamer mixture tank 6 have been filled with their respective solutions, the controller 400 sends a start signal to the first solenoid valve 11 and the second solenoid valve 12 to dilute the foaming agent and defoamer with water. When the liquid level reaches the corresponding injection volume, the system automatically closes the first solenoid valve 11 and the second solenoid valve 12.

[0046] The water replenishment component 300 includes a water storage tank 10, which is connected to the foaming agent mixture tank 5 via a third pipeline 16, and to the defoamer mixture tank 6 via a fourth pipeline 17. A float switch 9 is installed at the water inlet of the water storage tank 10, and a water valve 13 is installed on the water pipe connected to the water inlet of the water storage tank 10. When the water level in the water storage tank 10 drops, the water valve 13 opens to fill the water storage tank 10 with water. By adding a water storage tank 10 to store sufficient water, the dilution time is reduced, and the float switch 9 at the water inlet of the water storage tank 10 enables automatic water storage.

[0047] Preferably, the water storage tank 10 is positioned above the foaming agent mixing assembly 100 and the defoaming agent mixing assembly 200. By optimizing their spatial relationship, the water dilution function is achieved using the principle of liquid level difference.

[0048] In operation, the controller 400 controls the foaming agent concentrate tank 1 to replenish the foaming agent mixture tank 5; controls the defoamer concentrate tank 2 to replenish the defoamer mixture tank 6; controls the water storage tank 10 to store water; and controls the dilution of the solutions in the foaming agent mixture tank 5 and the defoamer mixture tank 6, respectively. The controller 400 includes an RTU telemetry terminal.

[0049] In this embodiment of the system, all pipelines involved are PE pipelines.

[0050] The specific steps for preparing the intelligent defoaming agent are as follows:

[0051] (1) The magnetic float level gauge detects the liquid level of the mixing tank in real time. When the liquid level of the mixing tank drops to the set reference value, the centrifugal pump automatically starts to add the original drug solution from the original drug solution tank to the mixing tank.

[0052] (2) When the liquid level in the mixing tank reaches the set dosage, the original drug solution is automatically added and the centrifugal pump stops automatically.

[0053] (3) After the original solution of the agent is added, the system automatically opens the solenoid valve to inject water from the tap water tank to the mixing tank according to the set dilution ratio. When the liquid level reaches the set injection volume, the system automatically closes the solenoid valve, and the preparation operation of the intelligent defoaming agent is completed. In step (3), a float switch 9 is added to the water inlet of the tap water tank to realize the water storage function. The tap water tank is set above the mixing tank, and the water injection dilution function is realized by the principle of liquid level difference.

[0054] The intelligent defoaming agent preparation system features remote and on-site automatic preparation of agents, strong versatility, and three major functions: automatic water storage, real-time liquid level monitoring, and intelligent agent preparation. It effectively solves the technical problems of long preparation time and low efficiency in defoaming agent preparation.

[0055] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A smart system for preparing anti-foaming agents for well sites, characterized in that, It includes a foaming agent mixing assembly (100), an antifoaming agent mixing assembly (200), a water replenishment assembly (300), and a controller (400); The foaming agent mixing assembly (100) includes a foaming agent stock solution tank (1) and a foaming agent mixture tank (5) connected in sequence via a first pipeline (14); The defoamer mixing assembly (200) includes a defoamer stock solution tank (2) and a defoamer mixing solution tank (6) connected in sequence via a second pipeline (15); The water replenishment component (300) includes a water storage tank (10), which is connected to the foaming agent mixture tank (5) via a third pipeline (16), and the water storage tank (10) is connected to the defoamer mixture tank (6) via a fourth pipeline (17). In operation, the controller (400) controls the foaming agent concentrate tank (1) to replenish the foaming agent mixture tank (5); controls the defoamer concentrate tank (2) to replenish the defoamer mixture tank (6); controls the water storage tank (10) to store water; and controls the dilution of the chemical solutions in the foaming agent mixture tank (5) and the defoamer mixture tank (6) respectively.

2. The intelligent anti-foaming agent preparation system for well sites according to claim 1, characterized in that, The foaming agent mixture tank (5) is equipped with a first level gauge (7); the defoamer mixture tank (6) is equipped with a second level gauge (8).

3. The intelligent anti-foaming agent preparation system for well sites according to claim 2, characterized in that, Both the first level gauge (7) and the second level gauge (8) are magnetic float level gauges. The magnetic float level gauge converts the level signal into an electrical signal and transmits it to the controller (400) through a transmitter.

4. The intelligent anti-foaming agent preparation system for well sites according to claim 2, characterized in that, The first pipeline (14) is equipped with a first self-priming centrifugal pump (3), and the second pipeline (15) is equipped with a second self-priming centrifugal pump (4); the controller (400) is used to control the opening and closing of the first self-priming centrifugal pump (3) and the second self-priming centrifugal pump (4).

5. The intelligent defoaming agent preparation system for well sites according to claim 4, characterized in that, Both the first self-priming centrifugal pump (3) and the second self-priming centrifugal pump (4) are explosion-proof self-priming centrifugal pumps.

6. The intelligent anti-foaming agent preparation system for well sites according to claim 1, characterized in that, The third pipeline (16) is equipped with a first solenoid valve (11), and the fourth pipeline (17) is equipped with a second solenoid valve (12); the controller (400) is used to control the opening and closing of the first solenoid valve (11) and the second solenoid valve (12).

7. The intelligent anti-foaming agent preparation system for well sites according to claim 1, characterized in that, A float switch (9) is installed at the inlet of the water storage tank (10).

8. The intelligent anti-foaming agent preparation system for well sites according to claim 7, characterized in that, A water valve (13) is installed on the water pipe connected to the inlet of the water storage tank (10), and the controller (400) is used to control the opening and closing of the water valve (13).

9. The intelligent anti-foaming agent preparation system for well sites according to claim 1, characterized in that, The water storage tank (10) is positioned above the foaming agent mixing assembly (100) and the defoaming agent mixing assembly (200).

10. The intelligent anti-foaming agent preparation system for well sites according to claim 1, characterized in that, The controller (400) is an RTU telemetry terminal.

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