A foam drainage gas recovery system and method based on a multi-gas well platform

Abstract

The present application relates to a kind of foam drainage gas recovery system and method based on multi-gas well gas platform, which includes the following steps: S1: automatically obtaining the state parameters of multiple gas well wellheads;S2: the state parameters of multiple gas well wellheads are all transmitted to control center, to determine whether the corresponding gas well needs to carry out foam drainage gas recovery process;S3: for the gas well that needs to start foam drainage gas recovery process, according to the state parameters of the corresponding gas well obtained, the concentration and capacity of foam drainage agent solution are determined, and the corresponding foam drainage agent solution is configured by controlling foam drainage agent solution preparation system;S4: the corresponding foam drainage agent solution is injected into the gas well, and the implementation of the process is completed, based on the automatic acquisition and processing of data, the implementation of the foam drainage gas recovery process of multiple gas wells is realized, the purpose of timely automatic implementation of foam drainage gas recovery of gas well of gas platform is achieved, and the timeliness of the process is ensured, while reducing the labor intensity of workers, the operating cost can be effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of oil and gas production engineering in the petroleum industry, and more specifically, to a foam drainage gas production system and method based on a multi-well gas production platform. Background Technology

[0002] Foam drainage gas production technology is an injection and drainage process that involves adding surfactants to the well. By adding surfactants, the surface tension between natural gas and the liquid in the wellbore is reduced. Under the combined action of the liquid and natural gas at the bottom of the well, a large amount of foam is generated. Compared with the density of the liquid at the bottom of the well, the density of the foam is much lower, making it easier for the gas to be carried to the surface. This eliminates the impact of the liquid at the bottom of the well on the normal production of the gas well. Therefore, foam drainage gas production technology is one of the effective measures to extend the normal water-bearing production time of water-producing gas wells and improve the gas well recovery rate. It is a drainage gas production technology that is currently widely used in gas fields in China.

[0003] Currently, my country is vigorously developing shale gas extraction. A single gas extraction platform has multiple shale gas wells, each with different operating conditions and varying degrees of fluid accumulation in the wellbore.

[0004] The traditional manual foaming method has problems such as untimely implementation of the process, high labor intensity, and the inability to maintain stable gas well production due to the frequency of manual foaming. At the same time, frequent vehicle use and manual operation increase operating costs and safety risks, reduce the effectiveness of the foaming process, and restrict the improvement of shale gas recovery rate.

[0005] In view of the above, this application is hereby submitted. Summary of the Invention

[0006] To address the problems of untimely implementation, high labor intensity, high operating costs, and high safety risks associated with foam drainage technology on multi-well gas production platforms in existing technologies, this invention provides a foam drainage gas production method based on a multi-well gas production platform. By acquiring the state parameters of multiple gas wellheads and determining and configuring the foam drainage agent solution based on the corresponding parameters, the implementation of the foam drainage gas production process can be facilitated, achieving timely implementation of the corresponding process, reducing operating costs, and reducing manual labor intensity. Furthermore, this invention also provides a foam drainage gas production system based on a multi-well gas production platform. Through the system's structural design, based on the aforementioned foam drainage gas production method, the implementation of the foam drainage gas production process can be facilitated, ensuring the timeliness of the implementation.

[0007] This invention is achieved through the following technical solution:

[0008] First aspect

[0009] This invention discloses a foam drainage gas extraction method based on a multi-well gas production platform, comprising the following steps:

[0010] S1: Automatically acquires status parameters of multiple gas wellheads;

[0011] S2: Transmit the status parameters of multiple gas wellheads to the control center to determine whether the corresponding gas wells need to carry out foam drainage gas production process.

[0012] S3: For gas wells that require the activation of foam drainage gas production technology, determine the concentration and volume of the foam drainage agent solution based on the state parameters of the corresponding gas well obtained in step S1, and control the foam drainage agent preparation system to configure the corresponding foam drainage agent solution.

[0013] S4: Inject the corresponding foaming agent solution into the gas well to complete the implementation of the foam drainage gas production process.

[0014] In this solution, the status parameters of multiple gas wellheads are automatically acquired and transmitted to the control center via a signal transmission network. The control center then assesses the real-time status of the gas wells to determine whether foam drainage technology is required. Based on the requirements of the foam drainage technology, the concentration and volume of the foam drainage agent solution to be prepared are determined. The control center then controls the foam drainage agent preparation system to prepare the corresponding foam drainage agent solution and delivers it to the gas well to complete the implementation of the foam drainage gas production process. This solution, based on automatic data acquisition and processing, and providing corresponding control signals, enables the implementation of foam drainage gas production technology for multiple gas wells. It achieves the goal of timely and automatic implementation of foam drainage gas production on the gas production platform, thereby ensuring the timeliness of the process, reducing the labor intensity of staff, and effectively reducing operating costs.

[0015] Furthermore, between steps S1 and S2, a process commencement timing determination step is included, which includes:

[0016] The critical fluid-carrying flow rate is calculated based on the real-time data of the acquired wellhead condition parameters;

[0017] A safety threshold is preset based on the critical liquid carrying flow rate, wherein the safety threshold should be greater than the critical liquid carrying flow rate;

[0018] The real-time data of the acquired wellhead status parameters are compared with the preset safety threshold. When the acquired real-time data is less than the preset safety threshold, the foam drainage gas production process is started.

[0019] Furthermore, multiple gas wells are connected in parallel to inject the foaming agent solution.

[0020] Furthermore, in step S3, the concentration and volume of the foaming agent solution are determined, and the preparation of the foaming agent solution is completed, specifically including the following steps:

[0021] S31: Based on the collected state parameters of multiple gas wellheads, determine the concentration of the foam drainage agent solution for multiple gas wells that require foam drainage gas production technology;

[0022] S32: Compare the concentrations of multiple foaming agent solutions and prepare the foaming agent solution with the highest concentration in the mixing tank according to the maximum value among them;

[0023] S33: Based on the actual required concentration and maximum concentration of the foaming agent solution for different gas wells, calculate the amount of clean water that needs to be added to different gas wells, and connect a clean water injection port to each parallel liquid supply branch to achieve dilution of the foaming agent solution.

[0024] Second aspect

[0025] This invention also relates to a foam drainage gas production system based on a multi-well gas production platform, used to implement the above-mentioned foam drainage gas production method, comprising:

[0026] A data acquisition device for collecting wellhead data, wherein each data acquisition device corresponds to a gas well;

[0027] A foaming agent preparation system is used to prepare a foaming agent solution for foam drainage gas production in gas wells. The outlet of the foaming agent preparation system is connected to the gas well through multiple parallel supply branches, wherein each supply branch corresponds to a gas well.

[0028] A control center connected to the data acquisition device is used to control the foaming agent preparation system to prepare the foaming agent solution based on the wellhead data acquired by the data acquisition device.

[0029] Furthermore, the data acquisition device includes pressure sensors for acquiring wellhead oil pressure and casing pressure, and flow sensors for acquiring wellhead gas production and fluid production.

[0030] Furthermore, the foaming agent preparation system includes a storage tank for storing the foaming agent, a water storage tank for storing clean water, and a preparation tank for mixing the foaming agent and clean water. The control center controls the storage tank and the water storage tank to inject the foaming agent and clean water into the preparation tank to complete the preparation of the foaming agent solution. The preparation tank is connected to the gas well through multiple liquid supply branches, and the multiple liquid supply branches are arranged in parallel.

[0031] Furthermore, the control center includes a calculation module, which is used to calculate the concentration and volume of the foam drainage agent solution required for implementing the foam drainage gas production process based on the wellhead parameters of a single gas well.

[0032] Furthermore, the control center also includes a comparison module, which is used to receive the foam drainage agent solution concentration of multiple gas wells that need to implement the foam drainage gas production process, and output the maximum concentration to the foam drainage agent preparation system to assist in controlling the foam drainage agent preparation system to prepare the foam drainage agent solution with the maximum concentration.

[0033] Furthermore, the liquid supply branch is also equipped with a mixing chamber, which is connected to a water storage tank via a clean water pipeline. The clean water pipeline is equipped with a solenoid valve and a flow meter. The control center also includes a processing module, which is used to calculate the clean water volume based on the maximum concentration and the concentration of the foaming agent solution in the gas well that requires foam drainage gas extraction. The processing module is connected to the solenoid valve and the flow meter for signal control of the clean water volume.

[0034] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0035] This invention relates to a foam drainage gas extraction method based on a multi-well gas extraction platform. Based on automatic data acquisition and processing, and providing corresponding control signals, the method enables the implementation of foam drainage gas extraction technology for multiple gas wells. This achieves the goal of timely and automatic foam drainage gas extraction for gas wells on the gas extraction platform, thereby ensuring the timeliness of the process. While reducing the labor intensity of workers, it can also effectively reduce operating costs.

[0036] The present invention also relates to a foam drainage gas production system based on a multi-well gas production platform. Through the structural design of the system, based on the above-mentioned foam drainage gas production method, the implementation of the foam drainage gas production process can be facilitated, thereby ensuring the timely implementation of the process. Attached Figure Description

[0037] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0038] Figure 1 A flowchart of the foam drainage gas extraction method provided in an embodiment of the present invention;

[0039] Figure 2 A flowchart illustrating the preparation of the foaming agent solution provided in an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of the structure of the foam drainage gas extraction system provided in an embodiment of the present invention;

[0041] Figure 4 This is a schematic diagram of the structure at the wellhead of the foam drainage gas production system provided in an embodiment of the present invention.

[0042] The reference numerals in the figure are as follows:

[0043] 100-Gas well, 110-Data acquisition device, 210-Drug storage tank, 220-Water storage tank, 230-Liquid mixing tank, 310-Solenoid valve, 320-Flow meter, 400-Control center, 500-Defoaming device. Detailed Implementation

[0044] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0045] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to practice the invention. In other instances, well-known structures, circuits, materials, or methods have not been specifically described in order to avoid obscuring the invention.

[0046] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0047] In the description of this invention, it should be understood that the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0048] Example

[0049] like Figure 1 As shown, the present invention discloses a foam drainage gas production method based on a multi-well 100 gas production platform, comprising the following steps:

[0050] S1: Automatically acquires status parameters of multiple gas wellheads at 100 wellheads;

[0051] S2: Transmit the status parameters of multiple gas wells 100 to the control center 400 to determine whether the corresponding gas well 100 needs to carry out foam drainage gas production process.

[0052] S3: For gas well 100 that needs to be activated for foam drainage gas production process, determine the concentration and volume of foam drainage agent solution based on the state parameters of the corresponding gas well 100 obtained in step S1, and control the foam drainage agent preparation system to prepare the corresponding foam drainage agent solution.

[0053] S4: Inject the corresponding foaming agent solution into gas well 100 to complete the implementation of the foam drainage gas production process.

[0054] Specifically, the wellhead status parameters include oil pressure, casing pressure, water production, and gas production.

[0055] Specifically, the status parameters of multiple gas wells 100 are transmitted to the control center 400 through a signal transmission network. The signal transmission network includes, but is not limited to, wired data transmission networks and wireless data transmission networks. The wireless data transmission networks include, but are not limited to, 2G networks, 3G networks, 4G networks, 5G networks, and NB-IoT networks based on mobile communication networks.

[0056] It should be noted that determining the concentration and volume of the foaming agent solution based on wellhead parameters is a conventional technique used in this field. As those skilled in the art should know, the concentration and volume of the foaming agent solution can be calculated using corresponding calculation methods based on the real-time wellhead oil-casing pressure difference, gas production, and water production.

[0057] Specifically, the concentration and volume of the foaming agent solution can be controlled by a flow meter 320 and a solenoid valve 310.

[0058] It should be noted that in step S4 of this scheme, the corresponding foaming agent solution is injected into the gas well 100 through the liquid supply branch to complete the implementation of the foam drainage gas production process. For cases where multiple gas wells 100 need to be carried out, the process can be implemented one by one in sequence, or by configuring various foaming agent solutions of different concentrations and capacities to implement the corresponding process.

[0059] In this solution, the status parameters of multiple gas wells 100 are automatically acquired and transmitted to the control center 400 via a signal transmission network. The control center 400 then assesses the real-time status of the multiple gas wells 100, determining whether the corresponding gas well 100 requires foam drainage technology. Based on the requirements of the foam drainage technology for the gas well 100, the concentration and volume of the foam drainage agent solution to be prepared are determined. The control center then controls the foam drainage agent preparation system to prepare the corresponding foam drainage agent solution and deliver it to the gas well 100 to complete the implementation of the foam drainage gas production process. This solution, based on automatic data acquisition and processing, and providing corresponding control signals, enables the implementation of foam drainage gas production technology for multiple gas wells 100. It achieves the goal of timely and automatic implementation of foam drainage gas production for the gas wells 100 on the gas production platform, thereby ensuring the timeliness of the process. While reducing the labor intensity of the staff, it can also effectively reduce operating costs.

[0060] In some embodiments, a process commencement timing determination step is further included between steps S1 and S2, the process commencement timing determination step including:

[0061] The critical fluid-carrying flow rate is calculated based on the real-time data of the acquired wellhead condition parameters;

[0062] A safety threshold is preset based on the critical liquid carrying flow rate, wherein the safety threshold should be greater than the critical liquid carrying flow rate;

[0063] The real-time data of the acquired wellhead status parameters are compared with the preset safety threshold. When the acquired real-time data is less than the preset safety threshold, the foam drainage gas production process is started.

[0064] It should be noted that the specific preset safety threshold should be greater than the calculated critical liquid-carrying flow rate. Specifically, the value of the preset safety threshold is preset according to the condition of different gas wells. As those skilled in the art should know, the purpose of the preset safety threshold is to ensure the early implementation of the foam drainage gas production process and to ensure the effectiveness of the foam drainage gas production process.

[0065] In some embodiments, multiple gas wells 100 inject foaming agent solution through parallel supply branches.

[0066] By setting up parallel branches, it can be further ensured that the concentration of the foaming agent solution in each branch will not affect each other.

[0067] like Figure 2 As shown, in some embodiments, in step S3, the concentration and volume of the foaming agent solution are determined, and the preparation of the foaming agent solution is completed, specifically including the following steps:

[0068] S31: Based on the collected state parameters of multiple gas wells 100, determine the concentration of the foam drainage agent solution for multiple gas wells 100 that require foam drainage gas production technology;

[0069] S32: Compare the concentrations of multiple foaming agent solutions and prepare the foaming agent solution with the highest concentration in the mixing tank 230 according to the maximum value among them;

[0070] S33: Based on the actual required concentration and maximum concentration of the foaming agent solution for different gas wells 100, calculate the amount of clean water that needs to be added to different gas wells 100, and connect a clean water injection port to each parallel liquid supply branch to achieve dilution of the foaming agent solution.

[0071] In this scheme, those skilled in the art should know that the specific wellhead parameters of multiple gas wells 100 differ to some extent, and the conditions for implementing the foam drainage process for different gas wells 100 should also differ to some extent. To implement the foam drainage process for multiple gas wells 100 using this scheme, firstly, the concentration of the foam drainage agent solution required for the gas well 100 with the highest concentration is determined, and the solution is prepared according to this concentration. An excess of this concentration of solution is prepared in a single mixing tank 230, and the mixing tank 230 is connected to different gas wells 100 through multiple supply branches, with corresponding supply lines... Each branch line corresponds one-to-one with a gas well 100. The required amount of clean water for dilution is determined by combining the concentration required by other gas wells 100 with the maximum concentration. The corresponding amount of clean water is then injected into the corresponding supply branch line to achieve concentration dilution. This ensures that the corresponding concentration can meet the requirements of the foam drainage process of the gas well 100 connected to it. In this embodiment, the design of the liquid preparation tank 230 and subsequent supply branch lines can effectively reduce the number of liquid preparation tanks 230. While ensuring the simplicity of the overall system architecture and reducing the installation cost, it meets the needs of multiple gas wells 100 processes.

[0072] It should be noted that the maximum concentration of the foaming agent solution prepared in the mixing tank 230 can be directly connected to the corresponding gas well 100 through the corresponding liquid supply branch without the need for dilution.

[0073] As those skilled in the art should know, for the implementation of the foam drainage process, it is necessary to ensure both the concentration and volume of the drainage solution. Therefore, the volume of the maximum concentration foam drainage agent solution configured in the mixing tank 230 should be excessive and meet the dilution requirements of multiple gas wells 100.

[0074] This invention also relates to a foam drainage gas production system based on a multi-well 100 gas production platform, used to implement the above-mentioned foam drainage gas production method, comprising:

[0075] A data acquisition device 110 is used to collect wellhead data, and the data acquisition device 110 corresponds one-to-one with the gas well 100;

[0076] A foaming agent preparation system is used to prepare a foaming agent solution for the gas well 100 to carry out foam drainage gas production process. The outlet of the foaming agent preparation system is connected to the gas well 100 through multiple parallel supply branches, wherein each supply branch corresponds to a gas well 100.

[0077] The control center 400 is connected to the data acquisition device 110 by signal. The control center 400 is used to control the foaming agent preparation system to prepare the foaming agent solution based on the wellhead data acquired by the data acquisition device 110.

[0078] In some embodiments, the data acquisition device 110 includes pressure sensors for acquiring wellhead oil pressure and casing pressure, and flow sensors for acquiring wellhead gas production and fluid production.

[0079] In some embodiments, the foaming agent preparation system includes a storage tank 210 for storing the foaming agent, a water storage tank 220 for storing clean water, and a preparation tank 230 for mixing the foaming agent and clean water. The control center 400 is used to control the storage tank 210 and the water storage tank 220 to inject the foaming agent and clean water into the preparation tank 230 to complete the preparation of the foaming agent solution. The preparation tank 230 is connected to the gas well 100 through multiple liquid supply branches, and the multiple liquid supply branches are arranged in parallel.

[0080] In some embodiments, the control center 400 includes a calculation module for calculating the concentration and volume of the foam drainage agent solution required for implementing the foam drainage gas production process based on the wellhead parameters of a single gas well 100.

[0081] In some embodiments, the control center 400 further includes a comparison module, which is used to receive the foam drainage agent solution concentrations of multiple gas wells 100 that require foam drainage gas production technology, and output the maximum concentration to the foam drainage agent preparation system to assist in controlling the foam drainage agent preparation system to prepare the foam drainage agent solution with the maximum concentration.

[0082] In some embodiments, the liquid supply branch is further provided with a mixing chamber, which is connected to the water storage tank 220 through a clean water pipeline. The clean water pipeline is provided with a solenoid valve 310 and a flow meter 320. The control center 400 also includes a processing module, which is used to calculate the clean water volume based on the maximum concentration and the concentration of the foaming agent solution in the gas well 100 that requires foam drainage gas extraction. The processing module is signal-connected to the solenoid valve 310 and the flow meter 320 to control the clean water volume.

[0083] Specifically, by setting up a mixing chamber, the thoroughness of dilution can be further ensured, thereby guaranteeing the effectiveness of the process.

[0084] like Figure 3 As shown, in a specific implementation of the foam drainage gas production system, a data acquisition device 110 is installed at the wellhead of each gas well 100, and multiple data acquisition devices 110 are connected to the control center 400 via signal transmission. Flow meters 320 and solenoid valves 310, controlled by the control center 400, are installed on the chemical storage tank 210, the water storage tank 220, the liquid preparation tank 230, and on each liquid supply branch. This effectively achieves concentration and volume control. The liquid preparation pipe is connected to the wellhead of the gas well 100 through parallel liquid supply branches, with each liquid supply branch corresponding to a gas well 100 to facilitate chemical dosing. When preparing the liquid using this system, the data acquisition device 110 collects the wellhead status data of multiple gas wells 100. The system parameters are transmitted to the control center 400 via a signal transmission network. The control center 400 identifies the gas wells 100 that require foam drainage, calculates and compares the maximum concentration of foam drainage agent solution needed, and controls the flow meter 320 and solenoid valve 310 on the chemical storage tank 210 and water storage tank 220 to prepare the corresponding concentration of foam drainage agent solution in the liquid preparation tank 230. For gas wells 100 with this concentration, the agent is directly added through the corresponding liquid supply branch. For gas wells 100 with other concentrations, the control center 400 determines the amount of clean water needed to dilute to the corresponding concentration and injects the corresponding volume of clean water into the corresponding liquid supply branch to dilute the foam drainage agent solution, thereby implementing the foam drainage process.

[0085] This solution ensures the automatic implementation of foam drainage gas production technology while simultaneously enabling foam drainage gas production technology for multiple gas wells 100. Furthermore, by requiring only one liquid preparation tank 230, the system construction cost can be effectively reduced, and the number of devices on the gas well 100 platform can be reduced for easier maintenance.

[0086] It should be noted that in this solution, by using a pre-mixed concentration for dilution, the impact of the foaming agent raw material on the tank is avoided, thus reducing maintenance costs. On the other hand, direct water injection facilitates operation and pipeline design.

[0087] like Figure 4 As shown in some embodiments, those skilled in the art should know that after carrying out the corresponding foam drainage gas extraction process, in order to ensure the quality of the collected products, a defoaming device 500 is usually installed at the gas well 100.

[0088] The above are preferred embodiments of the present invention. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. A foam drainage gas production method based on a multi-well gas production platform, characterized in that, Includes the following steps: S1: Automatically acquires status parameters of multiple gas wellheads; S2: Transmit the status parameters of multiple gas wellheads to the control center to determine whether the corresponding gas wells need to carry out foam drainage gas production process. S3: For gas wells that require the activation of foam drainage gas production technology, determine the concentration and volume of the foam drainage agent solution based on the state parameters of the corresponding gas well obtained in step S1, and control the foam drainage agent preparation system to configure the corresponding foam drainage agent solution. S4: Inject the corresponding foaming agent solution into the gas well to complete the implementation of the foam drainage gas production process; Between steps S1 and S2, there is also a process commencement timing determination step, which includes: The critical fluid-carrying flow rate is calculated based on the real-time data of the acquired wellhead condition parameters; A safety threshold is preset based on the critical liquid carrying flow rate, wherein the safety threshold should be greater than the critical liquid carrying flow rate; The real-time data of the acquired wellhead status parameters are compared with the safety threshold. When the corresponding real-time data is less than the preset safety threshold, the foam drainage gas production process is started. Multiple gas wells are injected with foaming agent solution through parallel supply branches; in step S3, the concentration and volume of the foaming agent solution are determined, and the preparation of the foaming agent solution is completed, specifically including the following steps: S31: Based on the collected state parameters of multiple gas wellheads, determine the concentration of the foam drainage agent solution for multiple gas wells that require foam drainage gas production technology; S32: Compare the concentrations of multiple foaming agent solutions and prepare the foaming agent solution with the highest concentration in the mixing tank according to the maximum value among them; S33: Based on the actual required concentration and maximum concentration of the foaming agent solution for different gas wells, calculate the amount of clean water that needs to be added to different gas wells, and connect a clean water injection port to each parallel liquid supply branch to achieve dilution of the foaming agent solution.

2. A foam drainage gas production system based on a multi-well gas production platform, characterized in that, The method for implementing the foam drainage gas extraction method according to claim 1 includes: A data acquisition device for collecting wellhead data, wherein each data acquisition device corresponds to a gas well; A foaming agent preparation system is used to prepare a foaming agent solution for foam drainage gas production in gas wells. The outlet of the foaming agent preparation system is connected to the gas well through multiple parallel supply branches, wherein each supply branch corresponds to a gas well. A control center connected to the data acquisition device is used to control the foaming agent preparation system to prepare the foaming agent solution based on the wellhead data acquired by the data acquisition device. The control center includes a calculation module, which is used to calculate the concentration and volume of the foam drainage agent solution required for implementing the foam drainage gas production process based on the wellhead parameters of a single gas well. The control center also includes a comparison module, which is used to receive the foam drainage agent solution concentration of multiple gas wells that need to implement the foam drainage gas production process, and output the maximum concentration to the foam drainage agent preparation system to assist in controlling the foam drainage agent preparation system to prepare the foam drainage agent solution with the maximum concentration. The liquid supply branch is also equipped with a mixing chamber, which is connected to a water storage tank via a clean water pipeline. The clean water pipeline is equipped with a solenoid valve and a flow meter. The control center also includes a processing module, which is used to calculate the clean water volume based on the maximum concentration and the concentration of the foaming agent solution in the gas well that requires foam drainage gas extraction. The processing module is connected to the solenoid valve and the flow meter to control the clean water volume.

3. A foam drainage gas production system based on a multi-well gas production platform according to claim 2, characterized in that, The data acquisition device includes pressure sensors for collecting wellhead oil pressure and casing pressure, and flow sensors for collecting wellhead gas production and fluid production.

4. A foam drainage gas production system based on a multi-well gas production platform according to claim 2, characterized in that, The foaming agent preparation system includes a storage tank for storing the foaming agent, a water storage tank for storing clean water, and a preparation tank for mixing the foaming agent and clean water. The control center controls the storage tank and the water storage tank to inject the foaming agent and clean water into the preparation tank to complete the preparation of the foaming agent solution. The preparation tank is connected to the gas well through multiple liquid supply branches, and the multiple liquid supply branches are set in parallel.

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