Single-well water invasion rule analysis method and system based on gas field water invasion

Abstract

The invention discloses a single-well water invasion rule analysis method and system based on gas field water invasion, and belongs to the field of conventional oil and gas reservoir evaluation technology and application. Compared with a traditional method in the past, the method has the advantages that a single-well water invasion rule is determined according to seismic data and development and production data, a single-well water outlet rule is found out according to different water breakthrough types of a single well, the water breakthrough scale and the water body size are evaluated in a partitioned mode, and different water control measures are provided for different areas; the influence of water invasion on the gas reservoir development effect is reduced, and stable production is assisted. In practical application, the remarkable effect is achieved, the technology suitable for the conventional water invasion partition evaluation of the water-containing gas reservoir is explored and formed, and the method is good in practical effect and suitable for being popularized in similar gas reservoirs. A water breakthrough early warning mechanism of the water breakthrough well is formulated, the water breakthrough risk of the single well can be judged according to the strike-slip fracture development condition in the early stage, the water breakthrough delaying technology is formulated in advance, and therefore the problems existing in the prior art can be solved through the method.

Description

Technical Field

[0001] The present invention belongs to the field of conventional oil and gas reservoir evaluation technology and application, and relates to a method and system for analyzing the water invasion law of a single well based on the water invasion of a gas field. Background Art

[0002] With the continuous development of gas reservoirs, single-well water breakthrough is bound to occur in gas fields. When edge-bottom water breaks into the bottom hole along the high-permeability zone or large fractures in the formation, water invasion is formed. Water invasion can form gas-liquid two-phase seepage in the formation. For gas-producing reservoirs with severe heterogeneity, edge-bottom water invasion will seriously weaken the productivity of the gas reservoir and have a great impact on reserves and production.

[0003] The number of water breakthrough wells increases, the productivity of water breakthrough wells decreases, the reserves controlled by a single well decrease, and the flooded wells stop flowing. This is not conducive to the stable production of the gas field. The treatment of water has become the most urgent problem to be solved to maintain the stable production of the gas field. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art and provide a method and system for analyzing the water invasion law of a single well based on the water invasion of a gas field.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A method for analyzing the water invasion law of a single well based on the water invasion of a gas field proposed by the present invention includes the following steps:

[0007] Obtain the situation of single-well water production wells in the gas reservoir and the change of the measured formation pressure of a single well over the years;

[0008] Compare the situation of single-well water production wells in the gas reservoir with the distribution degree of strike-slip faults to obtain the planar distribution law;

[0009] Based on the change of the measured formation pressure of a single well over the years, obtain the gas reservoir pressure and connectivity before the single well sees water;

[0010] Based on the planar distribution law, the gas reservoir pressure and connectivity before the single well sees water, obtain the water invasion law of the single well.

[0011] Preferably, based on the production situation of a single well and the dynamic monitoring of chloride ions, obtain the situation of single-well water production wells in the gas reservoir.

[0012] Preferably, for single-well water production wells, carry out a comparison with the distribution degree of strike-slip faults. The single-well water production wells are positively correlated with the distribution degree of strike-slip faults.

[0013] Preferably, the water invasion law of a single well is divided into long-term water production type, no water breakthrough type, flooded at production type, and rapid water breakthrough type.

[0014] Preferably, the long-term water production type is that faults and fractures are not developed and the water body energy is low;

[0015] For long-term water production types, obtain multi-method water control tests.

[0016] Preferably, for the types of immediate water flooding at production and rapid water breakthrough: fractures and cracks are developed, and bottom water vertically channels and horizontally invades along fractures and cracks, with high water body energy;

[0017] For the types of immediate water flooding at production and rapid water breakthrough, extend the single well life by adjusting production and water plugging, and deploy inspection wells or adjustment wells simultaneously.

[0018] Preferably, for the water-free type: fractures and cracks are not developed, and water body energy is low;

[0019] For the water-free type, control the production pressure difference to maintain stable production for a long time.

[0020] A single well water invasion law analysis system based on gas field water invasion proposed by the present invention includes:

[0021] A single well status information acquisition module, which is used to acquire the situation of a single well producing water in the gas reservoir and the change of the measured formation pressure of the single well over the years;

[0022] A planar distribution law acquisition module, which is used to compare the situation of a single well producing water in the gas reservoir with the distribution degree of strike-slip fractures to obtain the planar distribution law;

[0023] A single well pre-water breakthrough status information acquisition module, which is used to obtain the gas reservoir pressure and connectivity before water breakthrough of the single well based on the change of the measured formation pressure of the single well over the years;

[0024] A single well water invasion law acquisition module, which is used to obtain the single well water invasion law based on the planar distribution law, the gas reservoir pressure and connectivity before water breakthrough of the single well.

[0025] A computer device includes a memory and a processor. When the processor executes the computer program, it realizes the steps of the single well water invasion law analysis method based on gas field water invasion.

[0026] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it realizes the steps of the single well water invasion law analysis method based on gas field water invasion.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] A method for analyzing the water invasion law of a single well based on gas field water invasion proposed by the present invention is suitable for the analysis of water invasion zoning in conventional water-bearing gas reservoirs. Compared with the past traditional methods, the present invention determines the water invasion law of a single well based on seismic data and development production data, focuses on finding the water production law of a single well according to different water breakthrough types of the single well, evaluates the water breakthrough scale and water body size in different zones, and proposes different water control countermeasures for different regions to reduce the impact of water invasion on the gas reservoir development effect and help maintain stable production. In practical applications, remarkable results have been achieved, and a technology suitable for water invasion zoning evaluation of conventional water-bearing gas reservoirs has been explored and formed. The present invention has good practical effects and is suitable for popularization in similar gas reservoirs. A water breakthrough warning mechanism for water breakthrough wells is formulated. In the early stage, the water breakthrough risk of a single well can be judged according to the development of strike-slip faults, and technologies for delaying water breakthrough can be formulated in advance. Therefore, the analysis method proposed by the present invention can solve the problems existing in the prior art to reduce the impact of water invasion on the gas reservoir development effect and help maintain stable production.

[0029] A system for analyzing the water invasion law of a single well based on gas field water invasion proposed by the present invention realizes the analysis of the water invasion law of a single well by dividing the system into a single well state information acquisition module, a planar distribution law acquisition module, a state information acquisition module before water breakthrough of a single well, and a water invasion law acquisition module of a single well. The modular idea is adopted to make each module independent of each other, which is convenient for unified management of each module. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 It is a flowchart of the method for analyzing the water invasion law of a single well based on gas field water invasion of the present invention.

[0032] Figure 2 It is a system diagram of the system for analyzing the water invasion law of a single well based on gas field water invasion of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Accordingly, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0035] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0036] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "horizontal", "inner", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is usually placed during use, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0037] In addition, if the term "horizontal" appears, it does not mean that the component is required to be absolutely horizontal, but it can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but it can be slightly inclined.

[0038] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "connected to" are understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The following further describes the present invention in detail with reference to the drawings:

[0040] In order to reasonably control the activity of formation water and reduce its impact on development, key research is carried out on fine reservoir characteristics, the main geological factors controlling the activity of formation water, and the prediction of water breakthrough time. For porous edge and bottom water gas reservoirs, the main analysis focuses on the water body storage degree, fault sealing property, distribution of interlayers, and their inhibitory effects on the activity of formation water, etc. For fractured gas reservoirs, the key research focuses on the distribution law of fractures, the distribution and sealing property of faults, reservoir heterogeneity, the distribution of formation water, and its production capacity, etc.

[0041] For the analysis of the overall characteristics of water invasion in gas fields, three different water invasion pattern regions in the north, southeast, and west are determined. For the water breakthrough wells in different regions, the correlation between the fracture development degree, high-permeability zones and interbedded layers, and the distribution of strike-slip faults near the wells, as well as the distance from the edge and bottom water, are analyzed respectively to clarify the main controlling factors of water invasion, determine the main water influx directions, and in combination with the production dynamic characteristics and well testing, the water invasion patterns are implemented. For different water invasion characteristics, specific water control and water treatment development policies are proposed. Practice shows that the productivity of water-flooded wells can be effectively restored, good application results are achieved, and it also has a reference role for the development of other similar gas fields.

[0042] Therefore, a method for analyzing the water invasion law of a single well based on gas field water invasion proposed by the present invention, as Figure 1 shown, includes the following steps:

[0043] S1. Obtain the situation of single-well water production in the gas reservoir and the change of the measured formation pressure of the single well over the years;

[0044] Based on the single-well production situation and the dynamic monitoring of chloride ions, obtain the situation of single-well water production in the gas reservoir.

[0045] S2. Compare the situation of single-well water production in the gas reservoir with the distribution degree of strike-slip faults to obtain the planar distribution law;

[0046] For the single-well water production well, carry out a comparison with the distribution degree of strike-slip faults, and there is a positive correlation between the single-well water production well and the distribution degree of strike-slip faults.

[0047] S3. Based on the change of the measured formation pressure of the single well over the years, obtain the gas reservoir pressure and connectivity before the single well sees water;

[0048] S4. Based on the planar distribution law, the gas reservoir pressure and connectivity before the single well sees water, obtain the water invasion law of the single well.

[0049] The water invasion laws of single wells are divided into long-term water production type, non-water breakthrough type, flooded at production type, and rapid water breakthrough type.

[0050] Among them, for the long-term water production type, fractures and fissures are not developed and the water body energy is low; for the long-term water production type, obtain multi-means water treatment tests.

[0051] For the flooded at production type and rapid water breakthrough type: fractures and fissures are developed, and the bottom water vertically and horizontally invades along the fractures and fissures, and the water body energy is high; for the flooded at production type and rapid water breakthrough type, extend the single-well life by adjusting the production rate and water plugging, and at the same time deploy inspection wells or adjustment wells.

[0052] For the non-water breakthrough type: fractures and fissures are not developed and the water body energy is low; for the non-water breakthrough type, control the production pressure difference and maintain long-term stable production.

[0053] The following is a detailed description of this method:

[0054] 1) Determine water breakthrough wells: Conduct dynamic analysis of single wells in the gas reservoir. Based on the production conditions of single wells, carry out dynamic monitoring of chloride ions; summarize the changes in the measured formation pressure of single wells over the years. Before water breakthrough of a single well, the gas reservoir pressure is overall consistent and the connectivity is good. After water breakthrough, affected by water invasion, the internal pressure difference in the gas reservoir increases, showing an overall characteristic of "high in the east and low in the west, high in the south and low in the north". The energy supply of the water body in the south is obvious, and the southern part of the watered-out area is higher than the northern part. Identify the situation of single wells with water production in the gas reservoir;

[0055] 2) Use multiple methods to find the laws of water breakthrough wells and summarize the types of water invasion: For water breakthrough wells, conduct a comparison with the distribution degree of strike-slip faults. There is a positive correlation between the water breakthrough wells in the gas reservoir and the distribution degree of strike-slip faults; production logging data confirm that most of the water breakthrough wells in this area are characterized by bottom water flowing up along fault fractures for water flooding, while there is still a relatively long section of pure gas layer developed below the watered-out layer of vertical wells, and the horizontal wells have local water production in the horizontal section. This indicates that there is still potential for tapping in the eastern and northern parts of the structure with relatively serious water flooding; summarize that water invasion is divided into 3 types: In the north: long-term water production type, with relatively undeveloped faults and fractures, mainly edge water advancing, and weak water body energy; In the southeast: flooded at the time of production start-up, rapid water breakthrough type, with developed faults and fractures, bottom water vertically and horizontally invading along faults and fractures, and strong water body energy; In the west: no water breakthrough type, with undeveloped faults and fractures, and weak water body energy.

[0056] 3) Develop development technical countermeasures by region and category:

[0057] For wells with different types of water invasion, adopt different production measures to reduce the impact of water invasion on the development effect of the gas reservoir and help with stable production. For the water-free area in the west of the structure, it is necessary to adhere to reasonable production allocation, control the production pressure difference, and maintain long-term stable production; there are relatively few fractures developed in the north wing of the structure. By adjusting production and water plugging, extend the life of single wells, and at the same time deploy inspection wells or adjustment wells; for the severely water-flooded area in the southern wing of the eastern part of the structure, explore multi-measure water control tests to clarify the next production increase direction.

[0058] 4) According to the results of this study, establish a water breakthrough warning mechanism for water breakthrough wells. In the early stage, based on the development of strike-slip faults, judge the water breakthrough risk of single wells. When deploying new wells, the strike-slip faults should be taken as an important consideration; in addition, for production conditions, such as the change of oil pressure, the decline trend, the gas production per unit pressure drop, and chloride ion tracking, predict the water breakthrough time of single wells in advance and formulate technical policies to delay water breakthrough in advance.

[0059] The following is a description with examples:

[0060] The specific steps and implementation details in the study on the evaluation method of water invasion law in Gas Field A are as follows:

[0061] Step 1: Compare the fracture characterization results with the mud loss degree of single wells and the production water breakthrough time to find the planar correlation between water breakthrough wells and the distribution of strike-slip faults.

[0062] Using the artificial intelligence interpretation method, the longitudinal and transverse distribution characteristics of fractures are clearly reflected, the characterization results are more objective, with more fracture numbers, stronger regularity, and higher coincidence with wells. By comparing the newly characterized fracture results with the mud loss degree of single wells and the water breakthrough time of production, it is found that there is a positive correlation between the water breakthrough wells in the gas reservoir and the distribution degree of strike-slip fractures.

[0063] Step 2: Find the pressure change trend in the plane by analyzing the pressure change trend before and after water breakthrough in a single well.

[0064] Judging from the historical measured formation pressure changes of single wells, before the water breakthrough of single wells in 2015, the pressure in the gas reservoir was overall consistent and the connectivity was good. Since 2019, affected by water invasion, the internal pressure difference in the gas reservoir has increased, showing the characteristics of "higher in the east and lower in the west, higher in the south and lower in the north" as a whole. The energy replenishment of the water body in the south is obvious, and the water flooded area in the south is 2.3 - 3.5 MPa higher than that in the north, which is consistent with the current strike-slip fracture distribution law.

[0065] Step 3: Distinguish the water breakthrough laws of vertical wells and horizontal wells.

[0066] Production logging data confirms that most of the water breakthrough wells in this area show the characteristics of bottom water flowing upward along fault fractures to flood, and there is still a relatively long section of pure gas layer developed below the flooded interval. For horizontal wells, there is local water production in the horizontal section.

[0067] Production logging data confirms that most of the water breakthrough wells in this area show the characteristics of bottom water flowing upward along fault fractures to flood, and there is still a relatively long section of pure gas layer developed below the flooded interval. For horizontal wells, there is local water production in the horizontal section. In Well *101, the measured gas production profile shows that 3270 - 3283 is the main water production interval, and below 3283 m is the pure gas layer. The saturation test of Well AK1 - H5 also confirms that only some intervals of this well are flooded, and the two sides of the horizontal section are still gas layers. This indicates that there is still potential for tapping in the eastern and northern parts of the structure with relatively serious water flooding.

[0068] Step 4: Develop development technical countermeasures by region and by category.

[0069] For the non - water - flooded area in the western part of the structure, it is necessary to adhere to reasonable production allocation, control the production pressure difference, and maintain long - term stable production; in the northern wing of the eastern part of the structure where fewer fractures are developed, adjust the production rate and plug water to extend the life of single wells, and at the same time deploy inspection wells or adjustment wells; for the severely water - flooded southern wing of the eastern part of the structure, it is necessary to explore multi - means water control tests to clarify the next production increase direction.

[0070] A single - well water invasion law analysis system based on gas field water invasion proposed by the present invention, as Figure 2 shown, includes a single - well status information acquisition module, a planar distribution law acquisition module, a single - well pre - water - breakthrough status information acquisition module, and a single - well water invasion law acquisition module;

[0071] The single-well status information acquisition module is used to obtain the situation of single-well water-producing wells in the gas reservoir and the change of the measured formation pressure of each single well over the years;

[0072] The planar distribution law acquisition module is used to compare the situation of single-well water-producing wells in the gas reservoir with the distribution degree of strike-slip faults to obtain the planar distribution law;

[0073] The status information acquisition module before a single well encounters water is used to obtain the gas reservoir pressure and connectivity before a single well encounters water based on the change of the measured formation pressure of each single well over the years;

[0074] The single-well water invasion law acquisition module is used to obtain the single-well water invasion law based on the planar distribution law, the gas reservoir pressure and connectivity before a single well encounters water.

[0075] The terminal device provided by the embodiment of the present invention includes: a processor, a memory, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps in the above-mentioned method embodiments are implemented. Alternatively, when the processor executes the computer program, the functions of each module / unit in the above-mentioned device embodiments are implemented.

[0076] The computer program can be divided into one or more modules / units, and the one or more modules / units are stored in the memory and executed by the processor to complete the present invention.

[0077] The terminal device can be a computing device such as a desktop computer, a notebook, a palm computer, and a cloud server. The terminal device may include, but is not limited to, a processor and a memory.

[0078] The processor may be a central processing unit (CPU), or may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0079] The memory can be used to store the computer program and / or module. The processor realizes various functions of the terminal device by running or executing the computer program and / or module stored in the memory, and by calling the data stored in the memory.

[0080] If the modules / units integrated in the terminal device are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, to implement all or part of the processes in the above-described embodiment methods of the present invention, it can also be completed by instructing relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of the above-described various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, executable file, or some intermediate form, etc. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium, etc. It should be noted that the content included in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electrical carrier signals and telecommunication signals.

[0081] The present invention is suitable for the evaluation of water invasion zoning in conventional water-bearing gas reservoirs. Compared with the traditional methods in the past, the core of this technology is to determine the water invasion law of individual wells based on seismic data and production data. Specifically, according to the different water breakthrough types of individual wells, the water production law of individual wells is found, and the water breakthrough scale and water body size are evaluated by zoning. Different water control countermeasures are proposed for different regions. In the actual application in a certain gas field, remarkable results have been achieved, and a technology suitable for the evaluation of water invasion zoning in conventional water-bearing gas reservoirs has been explored and formed. This technology has strong theoreticality and good practical effects, and is suitable for popularization in similar gas reservoirs.

[0082] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for analyzing the single-well water invasion law based on gas field water invasion, characterized in that, It includes the following steps: Obtain the situation of a single well with water production in the gas reservoir and the change of the measured formation pressure of the single well over the years; Compare the situation of a single well with water production in the gas reservoir with the distribution degree of strike-slip faults to obtain the plane distribution law; Based on the change of the measured formation pressure of the single well over the years, obtain the gas reservoir pressure and connectivity before water breakthrough of the single well; Based on the plane distribution law, the gas reservoir pressure and connectivity before water breakthrough of the single well, obtain the water invasion law of the single well.

2. The single-well water invasion law analysis method based on gas field water invasion according to claim 1, characterized in that, Based on the production situation of the single well and the dynamic monitoring of chloride ions, obtain the situation of a single well with water production in the gas reservoir.

3. The single-well water invasion law analysis method based on gas field water invasion according to claim 1, wherein For a single well with water production, conduct a comparison with the distribution degree of strike-slip faults. The distribution degree of a single well with water production is positively correlated with the distribution degree of strike-slip faults.

4. The single well water invasion law analysis method based on gas field water invasion according to claim 1, characterized in that The water invasion law of a single well is divided into long-term water-bearing production type, no water breakthrough type, flooded at production type, and rapid water breakthrough type.

5. The single-well water invasion law analysis method based on gas field water invasion according to claim 4, wherein, The long-term water-bearing production type is characterized by undeveloped faults and fractures and low water body energy; For the long-term water-bearing production type, obtain multi-method water control tests.

6. The method for analyzing the single-well water invasion law based on gas field water invasion according to claim 4, characterized in that, Flooded at production type and rapid water breakthrough type: faults and fractures are developed, and bottom water vertically and horizontally invades along faults and fractures, with high water body energy; For the flooded at production type and rapid water breakthrough type, extend the life of the single well by adjusting the production rate and water plugging, and at the same time deploy inspection wells or adjustment wells.

7. The method for analyzing the single-well water invasion law based on gas field water invasion according to claim 4, characterized in that, No water breakthrough type: faults and fractures are undeveloped and the water body energy is low; For the no water breakthrough type, control the production pressure difference to maintain stable production for a long time.

8. A single-well water invasion law analysis system based on gas field water invasion, characterized in that, It includes: A single well status information acquisition module, which is used to obtain the situation of a single well with water production in the gas reservoir and the change of the measured formation pressure of the single well over the years; A plane distribution law acquisition module, which is used to compare the situation of a single well with water production in the gas reservoir with the distribution degree of strike-slip faults to obtain the plane distribution law; A single well status information acquisition module before water breakthrough, which is used to obtain the gas reservoir pressure and connectivity before water breakthrough of the single well based on the change of the measured formation pressure of the single well over the years; A single well water invasion law acquisition module, which is used to obtain the water invasion law of the single well based on the plane distribution law, the gas reservoir pressure and connectivity before water breakthrough of the single well.

9. A computer device, comprising a memory and a processor, the memory storing a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the single well water invasion law analysis method based on gas field water invasion as described in any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the single well water invasion law analysis method based on gas field water invasion as described in any one of claims 1 to 7.

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