A method and system for identifying dominant channels for different reservoir types in air drive

Abstract

The application discloses an air drive different reservoir type advantage channel identification method and system, relates to the air drive channeling control technical field and comprises the following steps: determining injection-production relations by plane analysis, longitudinal analysis and production dynamic analysis; initially determining an advantage layer and a flow direction by connectivity analysis; obtaining different layer corresponding advantage well directions by connectivity analysis and monitoring analysis based on the advantage layer and the flow direction; determining a regulation and control mode by combining pressure drop analysis and test analysis, screening a foam medicament system according to different regulation and control requirements, carrying out profile control parameter design, regulation and control method design and foam parameter design, and guiding field air drive channeling control of different advantage channel types based on injection-production relations and advantage well directions. The application can comprehensively and deeply analyze the advantage channel under different reservoir conditions, accurately determine the specific type of the advantage channel, clearly distinguish a main target layer from a secondary target layer, and accurately identify well positions that need to be monitored.

Description

Technical Field

[0001] This invention relates to the field of air-driven channel control technology, specifically to a method and system for identifying advantageous channels for different reservoir types in air-driven systems. Background Technology

[0002] Air drive technology is prone to gas channeling issues in practical applications, and if this problem is not properly addressed, it will adversely affect the overall oil and gas field development. To effectively avoid the negative impacts of gas channeling and to meet the technical support requirements of air drive injection and production projects, we face a challenge: how to accurately identify the dominant permeability channel of the target well throughout the entire gas drive process. Traditional methods typically rely on the permeability parameters of neighboring wells around the target well to infer its permeability dominance, as shown in patent application CN116591646A. However, this method often fails to achieve the expected accuracy in practice. Therefore, it is necessary to optimize existing identification methods to more accurately identify and evaluate the dominant permeability channel of the target well during the gas drive process, thereby ensuring the effective implementation of air drive technology and improving overall development results. Summary of the Invention

[0003] The purpose of this invention is to propose a method and system for identifying advantageous channels in air drive for different reservoir types, addressing the characteristics of gas channeling in air drive technology and the regulation and energy replenishment requirements of low-permeability reservoirs during the air drive process. This method can comprehensively meet the needs of in-depth analysis of planar and vertical differences, thereby providing precise guidance for the optimized design of injection parameters.

[0004] According to a first aspect of the present disclosure, a method for identifying dominant channels for different air-driven reservoir types is provided, comprising the following steps:

[0005] Determine the injection-production relationship through planar analysis, vertical analysis, and production dynamic analysis;

[0006] Connectivity analysis was used to preliminarily determine the dominant strata and flow direction;

[0007] Based on the dominant strata and flow direction, the dominant well directions corresponding to different strata are obtained through connectivity analysis and monitoring analysis.

[0008] By combining pressure drop analysis and test analysis to determine the control method, foam agent system is screened for different control needs, profile control parameter design, control method design and foam parameter design are carried out, and gas drive channel control is guided on site based on injection-production relationship and dominant well direction for different dominant channel types.

[0009] In one embodiment, the planar analysis involves: using production dynamic analysis data and monitoring analysis data to initially identify advantageous channels, clarify the directions of primary and secondary advantageous channels, and determine advantageous directional wells and key monitoring wells;

[0010] The monitoring and analysis involves combining tracer test results, the new generation monitoring system Seismiscontroller4DVolume visualization method for water drive front analysis, and production dynamic analysis results to determine the direction of advantageous wells.

[0011] The production dynamic analysis involves assessing the impact of changes in water injection volume at the injection end on the production and water content at the output end, determining the sensitivity of the injection-production relationship and the corresponding wells, and, in conjunction with the current production status map, initially identifying the direction of advantageous wells and key monitoring wells.

[0012] The connectivity analysis involves identifying the main water-absorbing layer connectivity wells by analyzing the water absorption profile and the connectivity of sub-layers. This is then combined with the production dynamic analysis results and test analysis results to determine the dominant direction and key monitoring wells, thus obtaining the dominant wells corresponding to different layers.

[0013] The pressure drop analysis involves analyzing the results of well test interpretation using the Saphir and Topaze well test interpretation software modules to clarify the fracture development, permeability, and skin factor of the target layer, as well as the reservoir boundary, skin factor, and reservoir type. It also determines the fracture half-length and the control method.

[0014] The longitudinal analysis: through pressure drop analysis, water absorption profile analysis and test analysis results, the crack type and the primary and secondary dominant layers are identified, and the primary and secondary control target layers are determined.

[0015] In one embodiment, the autonomous system in the foam agent system includes particulate plugging agents, gel plugging agents, and gel plugging agents, which are suitable for different types of reservoirs;

[0016] The particulate plugging agent includes fly ash, rubber particles, and high-elasticity expanding particles. Fly ash and rubber particles are suitable for near-wellbore fractured and large-pore reservoirs, and are not limited by reservoir temperature. High-elasticity expanding particles are suitable for artificially fractured reservoirs, and the reservoir temperature is less than 90°C.

[0017] The gel-type plugging agent includes water glass gel and medium-low temperature rapid-setting gel. Water glass gel is suitable for microfractured and large-pore reservoirs with reservoir temperatures below 60°C. Medium-low temperature rapid-setting gel is suitable for fractured channels with reservoir temperatures below 60°C.

[0018] The gel-type plugging agents include low-temperature rapid-setting gels, phenolic gel series I-IV, and interpenetrating network gels. Among them, low-temperature rapid-setting gels are suitable for high-permeability reservoirs and microfractured reservoirs with reservoir temperatures below 60°C; phenolic gel series I-IV are suitable for high-permeability reservoirs, high-permeability strips, and fractured reservoirs with reservoir temperatures below 70°C; and interpenetrating network gels are suitable for high-permeability strips and high-permeability reservoirs with reservoir temperatures below 60°C.

[0019] In one embodiment, the foam agent system is suitable for gas-driven channel control under different temperatures and gas media where the dominant channel is well-developed, and is always ready for production; the all-liquid plugging foam agent system is suitable for gas-driven channel control under different temperatures, gas media and operating conditions where the dominant channel is moderate, and is always ready for production; the oil-washing foam agent system is suitable for oxygen-reduced air and nitrogen to drive weak dominant channels and reservoirs with high residual oil.

[0020] In one embodiment, the control method, combined with the control requirements of different reservoir conditions, is designed as "profile control + process control", "pre-control + process control", "process control" and "gas injection + process control", which forms a foam agent injection method of gas-liquid co-injection, which ensures that the foam is fully foamed while the injection pressure is lower than the simple gas injection pressure.

[0021] In one embodiment, the profile adjustment parameters are designed as follows:

[0022] Q=πABHΦ(1-Swi)×n

[0023] In the formula, A is the length of the major semi-axis of the ellipse, B is the length of the minor semi-axis of the ellipse; H is the thickness of 1 / 3 of the profile section (m); Φ is the porosity; Swi is the bound water saturation; and n is the strong direction.

[0024] In one embodiment, the foam parameters are designed such that the control radius is consistent with that of the gas drive, and the control amount of the secondary dominant layer is half that of the primary dominant layer.

[0025]

[0026] In the formula, Q 主 The main advantage layer controls the amount of data transfer; Q 次 For secondary dominant layer control of crosstalk; Q 地下 R is the underground control volume; h is the gas drive radius; N is the effective thickness; K is the connection direction; and K is the ratio of the underground foam volume to the surface volume under reservoir conditions.

[0027] According to a second aspect of the present disclosure, a dominant channel identification system for different air-driven reservoir types is provided, comprising:

[0028] The interpretation module determines the injection-production relationship through planar analysis, vertical analysis, and production dynamic analysis.

[0029] The modules were initially identified, and the dominant strata and flow direction were preliminarily determined through connectivity analysis.

[0030] The advantage acquisition module, based on the advantageous strata and flow direction, obtains the direction of the advantageous wells corresponding to different strata through connectivity analysis and monitoring analysis.

[0031] The design module combines pressure drop analysis and test analysis to determine the control method. For different control needs, it selects foam agent systems, conducts profile control parameter design, control method design, and foam parameter design, and guides gas drive channel control for different advantageous channel types on site based on injection-production relationship and advantageous well direction.

[0032] According to a third aspect of the present disclosure, an electronic device is provided, including a memory, a processor, and a computer program stored in the memory and running on the memory, wherein the processor executes the program to implement the aforementioned method for identifying advantageous channels for different air-driven reservoir types.

[0033] According to a fourth aspect of the present disclosure, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements the aforementioned method for identifying advantageous channels for different air-driven reservoir types.

[0034] Compared with existing technologies, the technical solutions adopted in this invention have the following advantages: This invention can conduct a comprehensive and in-depth analysis of dominant channels under different reservoir conditions, thereby accurately determining the specific type of dominant channels, clearly distinguishing between primary and secondary target layers, and precisely identifying well locations that require key monitoring. Based on this, this invention can provide targeted guidance for the optimization design process of injection parameters, ensuring that parameter settings are both efficient and accurate, thereby effectively implementing gas-driven channel control strategies. This not only improves operational smoothness but also greatly expands the feasibility and effectiveness of reservoir management and optimization adjustments. Attached Figure Description

[0035] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0036] Figure 1 This is a map showing the current state of mining operations.

[0037] Figure 2 This is a crack monitoring diagram;

[0038] Figure 3 This is a diagram illustrating the interpretation results of the well test. Detailed Implementation

[0039] The present disclosure will be further described below with reference to the accompanying drawings and embodiments.

[0040] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0041] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0042] It should be noted that the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of methods and systems according to various embodiments of this disclosure. It should be noted that each block in a flowchart or block diagram may represent a module, segment, or portion of code, which may include one or more executable instructions for implementing the logical functions specified in the various embodiments. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutively represented blocks may actually be executed substantially in parallel, or they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the flowcharts and / or block diagrams, and combinations of blocks in the flowcharts and / or block diagrams, may be implemented using a dedicated hardware-based system that performs the specified functions or operations, or using a combination of dedicated hardware and computer instructions.

[0043] Example 1:

[0044] This embodiment provides a method for identifying the dominant channels for different reservoir types in air-driven systems, including the following steps:

[0045] S1. Determine the injection-production relationship through planar analysis, vertical analysis, and production dynamic analysis;

[0046] Specifically, the planar analysis involves identifying dominant channels using production dynamics analysis data and monitoring analysis data, clarifying the directions of primary and secondary dominant channels, and determining dominant wells and key monitoring wells. The vertical analysis involves identifying fracture types and primary and secondary dominant strata using pressure drop analysis, water absorption profile analysis, and test analysis results, and determining primary and secondary control target strata. The production dynamics analysis involves assessing the impact of changes in injection volume at the injection end on production and water cut at the production end, determining the sensitivity of the injection-production relationship and corresponding wells, and, in conjunction with the current production status map, preliminarily determining the direction of dominant wells and key monitoring wells.

[0047] S2. Dominant strata and flow direction are preliminarily determined through connectivity analysis;

[0048] Specifically, the connectivity analysis involves identifying the main water-absorbing layer connectivity wells through water absorption profiles and sub-layer connectivity, and combining this with production dynamic analysis results and test analysis results to determine the dominant direction and key monitoring wells, thereby obtaining the dominant wells corresponding to different layers.

[0049] S3. Based on the dominant strata and flow direction, the dominant well directions corresponding to different strata are obtained through connectivity analysis and monitoring analysis;

[0050] Specifically, the monitoring and analysis involves combining tracer test results, the Seismiscontroller 4DVolume visualization method for water drive front analysis, and production dynamic analysis results to determine the direction of advantageous wells.

[0051] S4. Combine pressure drop analysis and test analysis to determine the control method, screen foam agent system for different control needs, carry out profile control parameter design, control method design and foam parameter design, and guide gas drive channel control for different advantageous channel types on site based on injection-production relationship and advantageous well direction.

[0052] Specifically, the pressure drop analysis involves analyzing the results of the well test interpretation using the Saphir and Topaze well test interpretation software modules to clarify the fracture development, permeability, and skin factor of the target layer, identify the reservoir boundary, skin factor, and reservoir type, determine the fracture half-length, and determine the control method.

[0053] Based on the analysis results, the primary and secondary target layers and key monitoring wells can be accurately identified, guiding the targeted design of channeling control parameters and ensuring the effectiveness of field tests. Various foam reagent systems have been developed to meet different channeling control needs under varying permeability and fracture conditions.

[0054] This invention combines planar and vertical perspectives, analyzing six angles and interpreting well test results to guide the selection and control methods of foam agent systems.

[0055] As a preferred embodiment provided in this example, the autonomous system in the foam agent system includes particulate plugging agents, gel plugging agents, and gel plugging agents, which are suitable for different types of reservoirs;

[0056]

[0057] In the above, large pores refer to pores with larger diameters and stronger seepage capacity; high permeability usually refers to permeability greater than 500 mD; and microcracks refer to microcracks ranging from a few micrometers to tens of micrometers in size.

[0058] As a preferred embodiment provided in this example, three major categories of foam agent systems have been developed to meet the needs of gas-driven channel control and field testing: high-sealing, all-liquid, and strong oil-washing. These systems can meet the application needs of multiple regions and all seasons. Among them, the sealing foam agent system has achieved full coverage of potential blocks. The sealing foam agent system (solid foam stabilizer) is suitable for gas-driven channel control under different temperatures and gas media in reservoirs with relatively developed dominant channels (usually referring to conventional reservoirs with permeability greater than 1000mD or fractured reservoirs with permeability of tens or close to 100). It has the characteristics of high foaming and strong foam stabilization and is ready for production at any time. The all-liquid sealing foam agent system is suitable for gas-driven channel control under different temperatures, gas media, and operating conditions in reservoirs with moderate dominant channels (usually referring to reservoirs with neither strong nor weak dominant channels). It has the characteristics of moderate foaming and foam stabilization and is ready for production at any time. The oil-washing foam agent system is suitable for oxygen-reduced air / nitrogen-driven reservoirs with weak dominant channels and high residual oil. It has low interfacial tension and high oil washing rate.

[0059] As a preferred embodiment provided in this example, the control method is designed in combination with the control requirements of different reservoir conditions. There are four control methods: "profile adjustment + process control", "pre-control + process control", "process control" and "gas injection first + process control", forming a foam injection method of gas-liquid co-injection. While ensuring that the foam is fully foamed, the injection pressure is lower than the simple gas injection pressure.

[0060] Specifically, for reservoir conditions where permeability is greater than 10 mD, fractures are well-developed, and dominant channels are well-developed, a profile control + process control approach is suitable; for permeability less than 10 mD, fractures are not well-developed, but dominant channels are well-developed, a pre-control + process control approach is suitable; for permeability less than 10 mD, no fractures are well-developed, and dominant channels are not well-developed, a process control approach is suitable; and for permeability less than 10 mD, no fractures are well-developed, and no dominant channels are suitable, a gas injection + process control approach is suitable.

[0061] As a preferred embodiment provided in this example, the profile adjustment parameter design adopts a plum blossom diagram method, and the shape of the plum blossom diagram is approximately elliptical:

[0062] Q=πABHΦ(1-Swi)×n

[0063] In the formula, A is the length of the major semi-axis of the ellipse, B is the length of the minor semi-axis of the ellipse; H is the thickness of 1 / 3 of the profile section (m); Φ is the porosity; Swi is the bound water saturation; and n is the strong direction.

[0064] As a preferred embodiment provided in this example, the foam parameter design is as follows: through indoor experiments and data research, and by fully considering the characteristics of foam, a foam channeling control parameter design formula is established. Sufficient foaming can further increase the Jamin effect; therefore, the channeling control radius is designed to be consistent with that of the gas drive. To ensure the sealing effect of the primary and secondary dominant layers, the channeling control amount of the secondary dominant layer is designed to be 1 / 2 of that of the primary dominant layer.

[0065] Q 主 =Q 地下 / K=πR 2 hφ(1-Swi)×n / N

[0066]

[0067] In the formula, Q 主 The main advantage layer controls the amount of data transfer; Q 次 For secondary dominant layer control of crosstalk; Q 地下 R is the underground control volume; h is the gas drive radius; N is the effective thickness; K is the connection direction; and K is the ratio of the underground foam volume to the surface volume under reservoir conditions.

[0068] As a preferred embodiment provided in this example, the gas drive channel control method based on injection-production relationship and dominant well direction guides different dominant channel types in the field as follows:

[0069]

[0070]

[0071] from Figure 1-2 It can be seen that natural and artificial fractures are well-developed and have a significant impact on water injection development; tracer, current mining status and production dynamics determine the advantageous direction wells;

[0072] like Figure 3 As shown, based on the well test interpretation results, it was determined to be a radial composite fracture with a permeability of 5.04 mD (between 5-10 mD) and a skin factor of 0.113 (>0). Furthermore, the design determined the control method to be early control to plug the fracture, and it is recommended that the channeling control system be a gas-liquid co-injection of a large dose of foam slug to adjust the advantage, and a mild gas injection method.

[0073] Example 2:

[0074] This embodiment provides a system for identifying advantageous channels for different reservoir types in air-driven systems, including:

[0075] The interpretation module determines the injection-production relationship through planar analysis, vertical analysis, and production dynamic analysis.

[0076] The modules were initially identified, and the dominant strata and flow direction were preliminarily determined through connectivity analysis.

[0077] The advantage acquisition module, based on the advantageous strata and flow direction, obtains the direction of the advantageous wells corresponding to different strata through connectivity analysis and monitoring analysis.

[0078] The design module combines pressure drop analysis and test analysis to determine the control method. For different control needs, it selects foam agent systems, conducts profile control parameter design, control method design, and foam parameter design, and guides gas drive channel control for different advantageous channel types on site based on injection-production relationship and advantageous well direction.

[0079] Example 3:

[0080] An electronic device includes a memory, a processor, and a computer program stored in the memory and running thereon. When the processor executes the program, it implements the aforementioned method for identifying dominant channels in different air-driven reservoir types, comprising:

[0081] Determine the injection-production relationship through planar analysis, vertical analysis, and production dynamic analysis;

[0082] Connectivity analysis was used to preliminarily determine the dominant strata and flow direction;

[0083] Based on the dominant strata and flow direction, the dominant well directions corresponding to different strata are obtained through connectivity analysis and monitoring analysis.

[0084] By combining pressure drop analysis and test analysis to determine the control method, foam agent system is screened for different control needs, profile control parameter design, control method design and foam parameter design are carried out, and gas drive channel control is guided on site based on injection-production relationship and dominant well direction for different dominant channel types.

[0085] Example 4:

[0086] A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the aforementioned method for identifying dominant channels for different reservoir types in air-driven systems, comprising:

[0087] Determine the injection-production relationship through planar analysis, vertical analysis, and production dynamic analysis;

[0088] Connectivity analysis was used to preliminarily determine the dominant strata and flow direction;

[0089] Based on the dominant strata and flow direction, the dominant well directions corresponding to different strata are obtained through connectivity analysis and monitoring analysis.

[0090] By combining pressure drop analysis and test analysis to determine the control method, foam agent system is screened for different control needs, profile control parameter design, control method design and foam parameter design are carried out, and gas drive channel control is guided on site based on injection-production relationship and dominant well direction for different dominant channel types.

[0091] Those skilled in the art will understand that the modules or steps described above can be implemented using general-purpose computer devices. Optionally, they can be implemented using computer-executable program code, which can then be stored in a storage device for execution by a computer device. Alternatively, they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. This disclosure is not limited to any particular combination of hardware and software.

[0092] The above description is merely a preferred embodiment of this application and is 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.

[0093] While the specific embodiments of this disclosure have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of this disclosure. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of this disclosure are still within the scope of protection of this disclosure.

Claims

1. A method for identifying dominant channels in different reservoir types for air-driven applications, characterized in that, Includes the following steps: Determine the injection-production relationship through planar analysis, vertical analysis, and production dynamic analysis; Connectivity analysis was used to preliminarily determine the dominant strata and flow direction; Based on the dominant strata and flow direction, the dominant well directions corresponding to different strata are obtained through connectivity analysis and monitoring analysis. By combining pressure drop analysis and test analysis to determine the control method, foam agent system is screened for different control needs, profile control parameter design, control method design and foam parameter design are carried out, and gas drive channel control is guided on site based on injection-production relationship and dominant well direction for different dominant channel types.

2. The method for identifying dominant channels in different air-driven reservoir types according to claim 1, characterized in that, The planar analysis involves: using production dynamic analysis data and monitoring analysis data to initially identify advantageous channels, clarify the directions of primary and secondary advantageous channels, and determine advantageous directional wells and key monitoring wells; The monitoring and analysis involves combining tracer test results, the Seismis controller 4D Volume visualization method of the monitoring system with water drive front analysis, and production dynamic analysis results to determine the direction of advantageous wells. The production dynamic analysis involves assessing the impact of changes in water injection volume at the injection end on the production and water content at the output end, determining the sensitivity of the injection-production relationship and the corresponding wells, and, in conjunction with the current production status map, initially identifying the direction of advantageous wells and key monitoring wells. The connectivity analysis involves identifying the main water-absorbing layer connectivity wells by analyzing the water absorption profile and the connectivity of sub-layers. This is then combined with the production dynamic analysis results and test analysis results to determine the dominant direction and key monitoring wells, thus obtaining the dominant wells corresponding to different layers. The pressure drop analysis involves analyzing the well test results using the Saphir and Topaze well test interpretation software modules to clarify the fracture development, permeability, and skin factor of the target layer, identify the reservoir boundary, skin factor, and reservoir type, determine the fracture half-length, and determine the control method. The longitudinal analysis: through pressure drop analysis, water absorption profile analysis and test analysis results, the crack type and the primary and secondary dominant layers are identified, and the primary and secondary control target layers are determined.

3. The method for identifying dominant channels in different air-driven reservoir types according to claim 1, characterized in that, The self-contained system in the foam agent system includes particulate plugging agents, gel plugging agents, and gel plugging agents, which are suitable for different types of reservoirs; The particulate plugging agent includes fly ash, rubber particles, and high-elasticity expanding particles. Fly ash and rubber particles are suitable for near-wellbore fractured and large-pore reservoirs, and are not limited by reservoir temperature. High-elasticity expanding particles are suitable for artificially fractured reservoirs, and the reservoir temperature is less than 90°C. The gel-type plugging agent includes water glass gel and medium-low temperature rapid-setting gel. Water glass gel is suitable for microfractured and large-pore reservoirs with reservoir temperatures below 60°C. Medium-low temperature rapid-setting gel is suitable for fractured channels with reservoir temperatures below 60°C. The gel-type plugging agents include low-temperature rapid-setting gels, phenolic gel series I-IV, and interpenetrating network gels. Among them, low-temperature rapid-setting gels are suitable for high-permeability reservoirs and microfractured reservoirs with reservoir temperatures below 60°C; phenolic gel series I-IV are suitable for high-permeability reservoirs, high-permeability strips, and fractured reservoirs with reservoir temperatures below 70°C; and interpenetrating network gels are suitable for high-permeability strips and high-permeability reservoirs with reservoir temperatures below 60°C.

4. The method for identifying dominant channels in different air-driven reservoir types according to claim 1, characterized in that, The plugging foam system in the foam agent system is suitable for gas-driven channel control under different temperatures and gas media with well-developed dominant channels, and is always ready for production; the all-liquid plugging foam system is suitable for gas-driven channel control under different temperatures, gas media and operating conditions with moderate dominant channels, and is always ready for production. Oil-washing foam systems are suitable for deoxygenated air and nitrogen to drive weak dominant channels in reservoirs with high residual oil levels.

5. The method for identifying dominant channels in different air-driven reservoir types according to claim 1, characterized in that, The aforementioned control method, combined with the control requirements of different reservoir conditions, is designed as "profile control + process control", "pre-control + process control", "process control" and "pre-gas injection + process control", forming a foam agent injection method of simultaneous gas and liquid injection, which ensures that the foam is fully foamed while the injection pressure is lower than the simple gas injection pressure.

6. The method for identifying dominant channels in different air-driven reservoir types according to claim 1, characterized in that, The method for designing the profile adjustment parameters is as follows: Q=πABHΦ(1-Swi)×n In the formula, A is the length of the major semi-axis of the ellipse, B is the length of the minor semi-axis of the ellipse; H is the thickness of 1 / 3 of the profile section (m); Φ is the porosity; Swi is the bound water saturation; and n is the strong direction.

7. The method for identifying dominant channels in different air-driven reservoir types according to claim 1, characterized in that, The foam parameter design method is as follows: the control radius is consistent with that of the gas drive, and the control amount of the secondary dominant layer is 1 / 2 of that of the primary dominant layer. Q 主 =Q 地下 / K=πR 2 hφ(1-Swi)×n / N In the formula, Q 主 The main advantage layer controls the amount of data transfer; Q 次 For secondary dominant layer control of crosstalk; Q 地下 R is the underground control volume; h is the gas drive radius; N is the effective thickness; K is the connection direction; and K is the ratio of the underground foam volume to the surface volume under reservoir conditions.

8. A system for identifying advantageous channels in different air-driven reservoir types, characterized in that, include: The interpretation module determines the injection-production relationship through planar analysis, vertical analysis, and production dynamic analysis. The modules were initially identified, and the dominant strata and flow direction were preliminarily determined through connectivity analysis. The advantage acquisition module, based on the advantageous strata and flow direction, obtains the direction of the advantageous wells corresponding to different strata through connectivity analysis and monitoring analysis. The design module combines pressure drop analysis and test analysis to determine the control method. For different control needs, it selects foam agent systems, conducts profile control parameter design, control method design, and foam parameter design, and guides gas drive channel control for different advantageous channel types on site based on injection-production relationship and advantageous well direction.

9. An electronic device, comprising a memory, a processor, and a computer program stored in the memory and running thereon, characterized in that, When the processor executes the program, it implements the method for identifying advantageous channels for different reservoir types in air-driven systems as described in any one of claims 1-7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by the processor, the program implements the method for identifying the dominant channels for different reservoir types in air-driven systems as described in any one of claims 1-7.

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