Wellbore complex well geological potential evaluation method, electronic device and storage medium

Abstract

The present application provides a method for evaluating the geological potential of complex wellbores in a wellbore, an electronic device, and a storage medium, relating to the technical field of energy extraction. The method includes: obtaining static geological data and dynamic production data of an exploitation area; obtaining the remaining reserve distribution and the analysis result of the influence of production dynamics in the exploitation area according to the static geological data and the dynamic production data, and the analysis result of the influence of production dynamics reflects the influence on the production dynamics of surrounding wells during the repair and fracturing of complex wellbores in the exploitation area; predicting the recovery factor after the repair of complex wellbores in the exploitation area according to the remaining reserve distribution and the analysis result of the influence of production dynamics, and obtaining the expected ultimate recovery factor EUR corresponding to the complex wellbores in the wellbore, and the EUR reflects the geological potential of the complex wellbores in the wellbore. This method can accurately and efficiently evaluate the geological potential of complex wellbores in a wellbore, so as to achieve the effect of optimizing wells with geological potential and improving the overall development efficiency of the block.

Description

Technical Field

[0001] The present application relates to the technical field of energy extraction, and particularly relates to a method for evaluating the geological potential of complex wellbores, an electronic device, and a storage medium. Background Art

[0002] For areas where shale gas reservoirs are buried deep and the geological conditions are complex, the horizontal section of shale gas wells is relatively long, and large-scale fracturing construction is required to achieve economic development, so the engineering construction difficulty is relatively large. With the large-scale development of shale gas, due to geological and engineering reasons, some gas wells have problems such as casing deformation, wellbore debris falling, and blockage. These complex wellbores that have not been fractured and put into production result in low single-well productivity, seriously restricting the development effect of the block. Therefore, evaluating the geological potential to obtain the amount of oil and gas resources that may exist in a region or formation and its development prospects is crucial for the development of shale gas reservoirs.

[0003] Therefore, there is an urgent need to provide a geological potential evaluation scheme for complex wellbores to select potential geological wells for wellbore repair and fracturing transformation, so as to improve the overall development effect of the block. Summary of the Invention

[0004] The present application provides a method for evaluating the geological potential of complex wellbores, an electronic device, and a storage medium, which can accurately and efficiently evaluate the geological potential of complex wellbores, select potential geological wells, and improve the overall development efficiency of the block.

[0005] In a first aspect, the present application provides a method for evaluating the geological potential of complex wellbores, including:

[0006] Obtaining static geological data and dynamic production data of the mining area;

[0007] Based on the static geological data and dynamic production data, obtaining the remaining reserve distribution and the production dynamic impact analysis result of the mining area, and the production dynamic impact analysis result reflects the impact on the production dynamics of surrounding wells during the repair and fracturing of complex wellbores in the mining area;

[0008] Based on the remaining reserve distribution and the production dynamic impact analysis result, predicting the recovery rate after the repair of complex wellbores in the mining area to obtain the corresponding Estimated Ultimate Recovery (EUR) of complex wellbores, and the EUR reflects the geological potential of complex wellbores.

[0009] In a possible implementation manner, the static geological data includes seismic data, drilling, logging, and coring data, and fracturing construction data; the obtaining of the remaining reserve distribution and the production dynamic impact analysis result of the mining area based on the static geological data and dynamic production data includes:

[0010] Conduct actual drilling trajectory analysis based on seismic data, drilling, logging, and coring data to obtain the actual drilling trajectory analysis results;

[0011] Conduct geological modeling based on seismic data, drilling, logging, coring data, and core data to obtain a three-dimensional geological model;

[0012] Conduct production effect analysis based on fracturing construction data and dynamic production data to obtain the production effect analysis results;

[0013] Based on the actual drilling trajectory analysis results, three-dimensional geological model, and production effect analysis results, obtain the remaining reserve distribution in the production area and the production dynamic impact analysis results.

[0014] In a possible implementation, based on the actual drilling trajectory analysis results, three-dimensional geological model, and production effect analysis results, obtaining the remaining reserve distribution in the production area and the production dynamic impact analysis results includes:

[0015] Based on the actual drilling trajectory analysis results and three-dimensional geological model, obtain the reservoir geological characteristics around the complex well in the wellbore;

[0016] Conduct numerical simulation based on the three-dimensional geological model and production effect analysis results to obtain the flow capacity of oil and gas in the formation;

[0017] Conduct fracturing simulation based on the three-dimensional geological model and production effect analysis results to obtain the generation and propagation directions of fractures generated by different fracturing schemes in the formation;

[0018] Based on the reservoir geological characteristics, the flow capacity of oil and gas in the formation, and the generation and propagation directions of fractures generated by different fracturing schemes in the formation, predict the remaining reserve distribution in the production area;

[0019] Conduct production dynamic impact analysis based on the reservoir geological characteristics, the flow capacity of oil and gas in the formation, and the generation and propagation directions of fractures generated by different fracturing schemes in the formation to obtain the production dynamic impact analysis results.

[0020] In a possible implementation, after determining the geological potential of the complex well in the wellbore according to EUR, it further includes:

[0021] Based on the EUR corresponding to each repair, determine that the complex well in the wellbore involved in the repair with the maximum EUR is the geological potential well.

[0022] In a possible implementation, after determining the geological potential of the complex well in the wellbore according to EUR, it further includes:

[0023] Obtain the evaluation criteria for the geological potential of complex wellbores corresponding to the mining area. The evaluation criteria for the geological potential of complex wellbores are established based on static geological data, dynamic production data, and the geological potential of complex wellbores;

[0024] Determine the geological potential wells in the mining area according to the evaluation criteria for the geological potential of complex wellbores.

[0025] In a second aspect, the present application provides an evaluation device for the geological potential of complex wellbores, including:

[0026] An acquisition module for acquiring the static geological data and dynamic production data of the mining area;

[0027] A processing module for obtaining the remaining reserve distribution and production dynamic impact analysis results of the mining area according to the static geological data and dynamic production data. The production dynamic impact analysis results reflect the impact on the production dynamics of surrounding wells during the repair and fracturing processes of complex wellbores in the mining area;

[0028] A prediction module for predicting the recovery rate after the repair of complex wellbores in the mining area according to the remaining reserve distribution and production dynamic impact analysis results, and obtaining the EUR corresponding to the complex wellbores. The EUR reflects the geological potential of the complex wellbores.

[0029] In a possible implementation manner, the static geological data includes seismic data, drilling, logging, and coring data, and fracturing construction data. Correspondingly, the processing module is specifically used for:

[0030] Perform actual drilling trajectory analysis based on seismic data and drilling, logging, and coring data to obtain the actual drilling trajectory analysis results;

[0031] Perform geological modeling based on seismic data, drilling, logging, and coring data, and coring data to obtain a three-dimensional geological model;

[0032] Perform production effect analysis based on fracturing construction data and dynamic production data to obtain the production effect analysis results;

[0033] The processing module obtains the remaining reserve distribution and production dynamic impact analysis results of the mining area according to the actual drilling trajectory analysis results, the three-dimensional geological model, and the production effect analysis results.

[0034] In a possible implementation manner, the processing module is further used for:

[0035] Obtain the reservoir geological characteristics around the complex wellbores according to the actual drilling trajectory analysis results and the three-dimensional geological model;

[0036] Perform numerical simulation according to the three-dimensional geological model and the production effect analysis results to obtain the flow capacity of oil and gas in the formation;

[0037] Conduct fracturing simulation based on the 3D geological model and production effect analysis results to obtain the generation and propagation directions of fractures generated by different fracturing schemes in the formation.

[0038] Predict the remaining reserve distribution in the production area based on the reservoir geological characteristics, the flow capacity of oil and gas in the formation, and the generation and propagation directions of fractures generated by different fracturing schemes in the formation.

[0039] Conduct production performance impact analysis based on the reservoir geological characteristics, the flow capacity of oil and gas in the formation, and the generation and propagation directions of fractures generated by different fracturing schemes in the formation to obtain the production performance impact analysis results.

[0040] In one possible implementation, the prediction module is further configured to: after determining the geological potential of the complex wellbore according to EUR, determine the complex wellbore involved in the repair corresponding to the maximum EUR as the geological potential well based on the EUR corresponding to each repair.

[0041] In one possible implementation, the prediction module is further configured to: after determining the geological potential of the complex wellbore according to EUR, obtain the geological potential evaluation criteria for the complex wellbore corresponding to the production area, where the geological potential evaluation criteria for the complex wellbore are established based on static geological data, dynamic production data, and the geological potential of the complex wellbore; determine the geological potential wells in the production area according to the geological potential evaluation criteria for the complex wellbore.

[0042] In a third aspect, the present application provides an electronic device, including: a memory, a processor;

[0043] The memory stores computer-executable instructions;

[0044] The processor executes the computer-executable instructions, enabling the processor to execute the above first aspect and / or various possible implementations of the first aspect.

[0045] In a fourth aspect, the present application provides a geological potential evaluation system for complex wellbores, including: a monitoring system and a computing device as described in the third aspect, where the monitoring system is configured to collect dynamic production data during the production process in real time.

[0046] In a fifth aspect, the present application provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed, they are used to implement the above first aspect and / or various possible implementations of the first aspect.

[0047] In a sixth aspect, the present application provides a computer program product, including a computer program, and when the computer program is executed, it implements the above first aspect and / or various possible implementations of the first aspect.

[0048] The wellbore complex well geological potential evaluation method, electronic device and storage medium provided by this application collect and analyze the static geological data and dynamic production data of the mining area to obtain the remaining reserve distribution and the analysis results of the dynamic influence of production. The relative position and development potential of the reservoir are obtained through the remaining reserve distribution, and the dynamic influence of mining, repair and fracturing on the surrounding wells is obtained through the analysis results of the dynamic influence of production, so as to realize the prediction of EUR after the repair of the wellbore complex wells in the mining area, and obtain the EUR corresponding to the wellbore complex wells. This EUR reflects the geological potential of the wellbore complex wells. This application comprehensively evaluates the geological potential of wellbore complex wells based on static geological data and dynamic production data, so as to accurately and efficiently select potential wells, and then carry out wellbore repair and / or fracturing transformation of wellbore complex wells, thereby releasing the potential production capacity of these wellbore complex wells and improving the overall development efficiency of the block. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application.

[0050] Figure 1 It is a schematic diagram of the scenario of the wellbore complex well geological potential evaluation method provided by an embodiment of this application;

[0051] Figure 2 It is a schematic flow chart of the wellbore complex well geological potential evaluation method provided by an embodiment of this application Figure 1 ;

[0052] Figure 3 It is a schematic flow chart of the wellbore complex well geological potential evaluation method provided by an embodiment of this application Figure 2 ;

[0053] Figure 4 It is an information flow chart of the wellbore complex well geological potential evaluation method provided by an embodiment of this application;

[0054] Figure 5 It is a schematic structural diagram of the wellbore complex well geological potential evaluation device provided by an embodiment of this application;

[0055] Figure 6 It is a schematic structural diagram of the electronic device provided by an embodiment of this application.

[0056] Through the above-mentioned accompanying drawings, the clear embodiments of this application have been shown, and there will be more detailed descriptions later. These accompanying drawings and written descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0057] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0058] First, the terms involved in this application are explained:

[0059] EUR forecast refers to estimating the total amount of oil and gas that can ultimately be recovered from an oil and gas field or a single oil well during its entire production life cycle by analyzing data and using mathematical models and simulation techniques.

[0060] Complex wells refer to oil and gas wells that have high technical difficulty and challenges in the drilling and production process, usually including horizontal wells, directional wells, multi-branch wells, high-pressure and high-temperature wells, etc. These complex wells require advanced drilling technology and equipment to cope with complex geological conditions and production requirements.

[0061] Geological potential assessment refers to the evaluation of the resource potential and economic feasibility of a region or oil and gas field through comprehensive analysis of data information to guide exploration and development decisions.

[0062] A high-quality geological potential well refers to an oil and gas well with exploration and development potential obtained by evaluating comprehensive indicators such as the well's oil and gas resource potential and economic exploitability.

[0063] Based on the importance of evaluating the geological potential of complex wells in the wellbore, the present application provides a solution for evaluating the geological potential of complex wells in the wellbore. By collecting and analyzing the static geological data and dynamic production data of complex wells in the mining area for comprehensive evaluation, the geological potential of complex wells in the wellbore is determined, and then the technical means to address potential wells are obtained, thereby improving the production capacity of single wells in the wellbore mining and the overall development efficiency of the block.

[0064] Optionally, the wellbore complex well geological potential assessment scheme provided by the present application can be applied to the unconventional and new energy fields. For example, when there are multiple wellbore complex wells in shale gas production wells, the geological potential wells can be accurately selected from these wellbore complex wells, and then the wellbore repair and / or fracturing transformation can be carried out to release the potential production capacity of these wellbore complex wells.

[0065] Here, first pass Figure 1 The application scenarios of this application are illustrated with examples. Figure 1 A schematic diagram of a scenario of a method for evaluating the geological potential of a complex well in a wellbore provided in an embodiment of the present application. Figure 1As shown in the figure, the specific application scenarios of the present application include a monitoring device 11, a storage device 12, and a terminal 13. Among them, the storage device 12 stores the static geological data used in the present application; the monitoring device 11 is used to obtain the dynamic production data used in the present application; data transmission can be carried out between the monitoring device 11 and the terminal 13, and between the storage device 12 and the terminal 13 through various connection methods, including network connection and wired connection, and the embodiments of the present application do not limit this.

[0066] Exemplarily, the monitoring device 11 may include, but is not limited to, a pressure sensor, a production logging tool, an oil-water separator monitoring device, a chemical analysis device, a vibration sensor, an acoustic monitor, etc. These monitoring devices are used to obtain or analyze the dynamic data generated during the production process and transmit this data to the terminal 13; the storage device 12 is used to store various materials, and these materials include, but are not limited to, static geological materials and dynamic production data. The terminal 13 obtains the static geological materials of the mining area from the monitoring device 11, and obtains the dynamic production data of the mining area from the monitoring device 11 and / or the storage device 12. Then, the terminal 13 analyzes and processes the obtained static geological materials and dynamic production data to evaluate the EUR corresponding to the complex well in the mining area.

[0067] In the embodiments of the present application, the user can view the dynamic production data transmitted by the monitoring device 11 in the terminal 13, and can also view the static geological data and dynamic production data stored in the storage device 12.

[0068] The following uses specific embodiments to detail the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems. These several specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The following will describe the embodiments of the present application with reference to the accompanying drawings.

[0069] Figure 2 Schematic flow of the geological potential evaluation method for complex wells in a wellbore provided by an embodiment of the present application Figure 1 . The embodiments of the present application provide a geological potential evaluation method for complex wells in a wellbore, which can be executed by the terminal 13 as shown in Figure 1 . As shown in Figure 2 , the geological potential evaluation method for complex wells in a wellbore includes:

[0070] S201. Obtain the static geological materials and dynamic production data of the mining area.

[0071] Among them, static geological data includes geological information collected at a specific time point or time period, which is relatively stable and does not change with time. The static geological data used in the embodiments of the present application may include seismic data, drilling, logging, and well logging data, core data, fracturing construction data, etc., which can reflect the geological conditions and oil and gas reservoir characteristics of the mining area, and determine the oil and gas reservoir reserves and development potential. Through static geological data, not only can potential geological risks be identified and evaluated to ensure the safety of the development process, but also geological risk areas can be avoided to improve the drilling success rate and efficiency. Optionally, the static geological data may also be geological data obtained through networks, archives, books, materials, or other means for describing underground geological structures, rock properties, reservoir characteristics, and other geological features.

[0072] Dynamic production data includes various data collected in real time or periodically during the oil and gas production process, which can reflect the state and performance of the production system and the dynamic changes and trends during the production process. The acquisition of dynamic production data can be related data monitored by monitoring equipment in real time, including but not limited to pressure, temperature, flow rate, composition, etc. The embodiments of the present application do not limit the acquisition methods of static geological data and dynamic production data.

[0073] S202. According to the static geological data and dynamic production data, obtain the remaining reserve distribution in the mining area and the analysis result of the production dynamic impact. The analysis result of the production dynamic impact reflects the impact on the production dynamics of surrounding wells during the repair and fracturing of complex wells in the wellbore in the mining area.

[0074] Among them, the remaining reserve distribution is the spatial distribution of unmined minerals or oil and gas resources. Analyzing the remaining reserve distribution can help formulate more effective mining plans and further improve the recovery rate. The remaining reserves are affected by various factors such as geological conditions, mining history, mining methods, and fracturing methods.

[0075] The analysis result of the production dynamic impact is the study of the changes in various factors during the oil and gas mining process and their impact on the mining results. Through the analysis of the production dynamic impact, the changes in various influencing factors during oil and gas mining can be continuously monitored, and the impact of different fracturing plans on EUR can be explored, so as to reflect the geological potential of complex wells in the wellbore.

[0076] In this step, a data analysis object combining dynamic and static is formed based on the static geological data and dynamic production data, and various data analysis, simulation, and other technical means are applied to obtain the remaining reserve distribution in the mining area and the analysis result of the production dynamic impact.

[0077] S203. According to the remaining reserve distribution and the analysis result of the production dynamic impact, predict the recovery rate after repairing complex wells in the wellbore in the mining area to obtain the EUR corresponding to the complex wells in the wellbore. The EUR reflects the geological potential of the complex wells in the wellbore.

[0078] EUR is an indicator for evaluating the potentially developable resources of oil and gas wells. Through EUR, more effective exploitation plans can be formulated. Additionally, high-potential areas and inefficient areas can be identified through EUR, making the development plan more targeted and thus improving the overall recovery rate.

[0079] In this step, based on the results of production dynamic impact analysis and the remaining reserve distribution, predict the change trend of production rate over time and the distribution and storage of remaining reserves in the formation under different scenarios. Considering the production output under different production, workover, and fracturing scenarios comprehensively, predict the EUR corresponding to the complex wellbore. According to the EUR corresponding to the complex wellbore, establish the geological potential evaluation criteria for the regional complex wellbore, and optimize the selection of high-quality geological potential wells.

[0080] The method for evaluating the geological potential of complex wellbores provided by the embodiments of the present application includes obtaining static geological data and dynamic production data of the exploitation area; analyzing the remaining reserve distribution and production dynamic impact of the exploitation area, quantitatively representing the geological distribution, quantity of the remaining reserves, and the impact of the current exploitation plan on the exploitation area. This process refines the reservoir characteristics of complex wells, enables balanced development of the reservoir, and improves the utilization rate of oil and gas resources. Then, obtain the EUR after the repair of the complex wellbore according to the remaining reserve distribution and production dynamic impact. Conduct a comprehensive evaluation of the geological potential of the complex wellbore by combining static and dynamic data based on the static geological data and dynamic production data, so as to accurately and efficiently optimize the selection of geological potential wells, quantitatively represent the geological potential through this process, and then perform wellbore repair and / or fracturing transformation on the complex wellbore, thereby releasing the potential production capacity of these complex wellbores, design the block exploitation plan from an overall perspective, and further improve the overall development effect of the block.

[0081] Figure 3 Schematic flow of the method for evaluating the geological potential of complex wellbores provided by an embodiment of the present application Figure 2 As Figure 3 shown, on the basis of the Figure 2 embodiment, the method for evaluating the geological potential of complex wellbores is described in detail. The method includes:

[0082] S301. Obtain static geological data and dynamic production data of the exploitation area.

[0083] In this step, obtain static geological data and dynamic production data of the exploitation area for subsequent processing and analysis. Among them, the static geological data includes seismic data, drilling, logging, coring data, and fracturing construction data. The specific description of this step can refer to S201 and will not be elaborated here.

[0084] For Figure 2Step S202 may further include: S302 to S304, and obtaining the remaining reserve distribution in the production area and the analysis result of the production dynamic influence according to the actual drilling trajectory analysis result, the 3D geological model, and the production effect analysis result.

[0085] Optionally, obtaining the remaining reserve distribution in the production area and the analysis result of the production dynamic influence according to the actual drilling trajectory analysis result, the 3D geological model, and the production effect analysis result may include: S305 to S309.

[0086] S302. Conduct actual drilling trajectory analysis based on seismic data, drilling, logging, and well logging data to obtain the actual drilling trajectory analysis result.

[0087] By conducting actual drilling trajectory analysis on seismic data, drilling, logging, and well logging data. Among them, seismic data can help infer the underground geological structure, provide the spatial distribution and shape of oil and gas reservoirs; provide detailed underground structures, including faults, folds, and salt domes; identify the positions and depths of different strata; predict the pressure distribution of formation pores to help design reasonable drilling fluid and fracturing fluid concentrations; help identify and locate faults and fractures. Drilling data helps analyze drilling efficiency and wellbore stability, and drilling data records key parameters during the drilling process, such as weight on bit, rotary speed, pump pressure, and drilling fluid density. Logging data reveals oil and gas shows and formation pressure in the formation. Well logging data is the data of oil and gas wells measured by various physical measurement techniques, which describes the resistivity, porosity, density, permeability, oil and gas content, and fluid properties of the formation. The actual drilling trajectory refers to the actual drilling path and direction during the drilling process. It includes all position and angle changes during the entire drilling process from the surface to the target formation. Analyzing the actual drilling trajectory helps optimize drilling parameters, avoid complex underground geological structures, and at the same time, combined with seismic data, it also helps understand the formation changes and update geological information.

[0088] In this step, by integrating logging data, drilling data, and seismic data, verify the coincidence degree between the actual drilled situation and the seismic data; compare the results of well logging and seismic data to verify the formation physical properties; comprehensively analyze the seismic data, drilling, logging, and well logging data to obtain the actual drilling trajectory analysis result. Through this step, the differences between the current formation and seismic data can be identified, the drilling trajectory can be evaluated, the safety and efficiency of the drilling project can be improved, and at the same time, detailed geological information of the formation can be obtained, which is convenient for later research on reservoir geological characteristics.

[0089] S303. Conduct geological modeling based on seismic data, drilling, logging, well logging data, and core data to obtain a 3D geological model.

[0090] Core data refers to the columnar rock samples and their related data obtained from underground formations through drilling technology. Core data provides direct geological information and is an important means for studying underground formations and lithology. A 3D geological model is a model that uses computer technology to visually and digitally represent the underground geological structure and characteristics in 3D form. The 3D geological model provides detailed 3D images of the formation, lithology, and resource distribution.

[0091] In this step, first, by integrating seismic data, drilling, logging, and core data, information such as the overall shape of the underground structure, formation information, fluid distribution, and porosity is determined; then, geological modeling software is used for geological modeling to construct a 3D geological model. Through the 3D geological model, the underground structure and resource distribution can be accurately understood, the spatial distribution, property changes, and structural characteristics of underground formations can be visualized; the shale gas reservoir can be determined, drilling risks can be reduced, the collection rate of oil and gas can be increased, and the production cost can be reduced.

[0092] S304. Analyze the production effect based on the fracturing construction data and dynamic production data to obtain the production effect analysis result.

[0093] Fracturing construction data is an important basis for evaluating the fracturing effect and optimizing construction parameters, including pumping pressure, type and dosage of fracturing fluid, sand ratio, fracture extension, etc. Through production effect analysis, problems in production, such as reservoir plugging, wellbore damage, or pressure drop, can be identified, and corresponding production enhancement measures can be formulated; it can also be used to adjust the production strategy, optimize the water injection or fracturing plan.

[0094] In this step, first, by analyzing the fracturing construction data, judge the generation and extension process of the fracture; determine whether the distribution of proppant in the fracture is uniform; calculate the fracture conductivity and evaluate the fluid transportation efficiency of the fracture during production. Determine the effectiveness of the fracturing construction, identify potential problems, and guide subsequent production work. Then, combine the fracturing construction data with the results of dynamic production data to evaluate the impact of the fracturing construction on the production effect, and thus obtain the production effect analysis result. Optionally, the production effect analysis result can include the daily average production of a single well, oil-gas-water ratio, bottom-hole pressure, single-well productivity, and well group productivity, etc.

[0095] S305. Obtain the reservoir geological characteristics around the complex wellbore of the well according to the actual drilling trajectory analysis result and the 3D geological model.

[0096] Reservoir geological characteristics research refers to comprehensively analyzing data information to describe and evaluate in detail the characteristics such as the location, lithology, porosity, permeability, bedding structure, and fluid distribution of the underground reservoir of an oil and gas well to support oil and gas development and production optimization.

[0097] Obtain detailed geological information of the formation through the analysis results of the actual drilling trajectory. Determine the location of the shale gas reservoir through the three-dimensional geological model data. Integrate the geological information and the location of the shale gas reservoir to identify the detailed geological information of the shale gas reservoir, and then finely depict and identify the reservoir geological characteristics around the complex wellbore.

[0098] Optionally, obtain the lithology changes, horizon information, porosity, and permeability in the formation through the analysis results of the actual drilling trajectory. Among them, the lithology changes provide the rock types and their physical properties of each rock layer in the formation; the horizon information includes the thickness, relative position, and interlayer relationship of the rock layers; the porosity can evaluate the overall quality and exploitation potential of the reservoir; the permeability can illustrate the fluid flow ability in the rock. Then, combine the three-dimensional geological model data to identify the thickness, depth, and relative position of the shale gas reservoir.

[0099] S306. Conduct numerical simulation based on the three-dimensional geological model and the production effect analysis results to obtain the fluid flow ability of oil and gas in the formation.

[0100] Numerical simulation refers to using mathematical models and computer algorithms to simulate and calculate the underground reservoir and fluid flow process, predict the production behavior and performance of oil and gas wells under different development schemes, so as to optimize the development strategy and improve the recovery rate.

[0101] First, obtain the detailed information of the shale gas reservoir in the three-dimensional geological model, and combine the production effect analysis results to understand the fluid behavior and reservoir dynamic characteristics in actual production. Then, establish a numerical simulation model using the detailed information of the shale gas reservoir and fluid properties, and calibrate the model using the production effect analysis results to ensure that the simulation results accurately reflect the actual situation. Subsequently, run the numerical simulation to calculate the fluid flow ability of oil and gas in the reservoir, analyze the fluid flow rate, pressure distribution, and production prediction, and identify possible flow bottlenecks or optimization spaces.

[0102] S307. Conduct fracturing simulation based on the three-dimensional geological model and the production effect analysis results to obtain the generation and propagation directions of fractures in the formation under different fracturing schemes.

[0103] Fracturing simulation refers to using computer models and numerical methods to simulate and analyze the fracture generation, propagation, and fluid flow during the hydraulic fracturing process to optimize the fracturing design, improve the reservoir permeability, and maximize the oil and gas production.

[0104] First, integrate the detailed information of the shale gas reservoir in the three-dimensional geological model, and at the same time use the production effect analysis results to understand the fluid behavior in actual production and the reservoir geological characteristics around the complex wellbore. Then, establish a fracturing simulation model including fracture generation and propagation based on these data, and set the corresponding simulation parameters. Run the numerical simulations of different fracturing schemes to observe the generation and propagation of fractures and their effects on the reservoir.

[0105] Through numerical simulation, the flow capacity of the reservoir can be accurately predicted, the development strategy can be optimized, production efficiency can be improved, development risks can be reduced, and thus more efficient and economic oil and gas production can be achieved. Through fracturing simulation, the effects of various fracturing plans can be evaluated, a suitable fracturing design plan for a single well can be selected, and the fracturing parameters can be adjusted to optimize the generation and propagation directions of fractures, thereby improving the recovery efficiency and production effect of the reservoir.

[0106] S308. Predict the distribution of remaining reserves in the production area based on the reservoir geological characteristics, the flow capacity of oil and gas in the formation, and the generation and propagation directions of fractures generated by different fracturing plans in the formation.

[0107] The distribution of remaining reserves refers to the distribution of oil and gas reserves that have not been exploited or cannot be exploited economically in the geological body during the development process of an oil and gas field. As the development of the oil and gas field progresses, the recoverable resources in the reservoir gradually decrease, and the distribution of remaining reserves becomes uneven and more complex. Understanding the distribution of remaining reserves helps to optimize the subsequent development strategy, reasonably arrange well positions and fracturing plans, and improve the recovery rate. Through three-dimensional geological modeling and reservoir simulation, the spatial distribution of remaining reserves can be accurately described, providing an important basis for formulating production enhancement measures and improving development efficiency.

[0108] In this step, the reserve distribution in the production area is determined by analyzing the actual drilling trajectory results and the three-dimensional geological model. By analyzing the distribution of remaining reserves, high-potential areas that have not been exploited can be identified, which helps to optimize well position selection; it helps to improve the production efficiency of each well, reduce well interference and production losses. This process can provide a comprehensive understanding of oil and gas resources and a basis for optimizing the development strategy, thereby improving resource utilization efficiency and production efficiency.

[0109] S309. Conduct a production dynamic impact analysis based on the reservoir geological characteristics, the flow capacity of oil and gas in the formation, and the generation and propagation directions of fractures generated by different fracturing plans in the formation, and obtain the production dynamic impact analysis results.

[0110] The production dynamic impact analysis results refer to the evaluation of the mutual influence between a single well or multiple wells by analyzing the production dynamics of oil and gas wells and combining the dynamic production data of surrounding wells. This analysis usually involves the impact of changes in single-well production, pressure response, injection of water or gas, or geological and reservoir characteristic changes caused by fracturing on surrounding wells, such as production capacity fluctuations, fluid migration, or pressure intensification.

[0111] Combined with the relative position and development potential of the reservoir in the reservoir geological feature study, the shale gas flow capacity and fluid velocity information in the reservoir obtained by numerical simulation, and the fracture generation and propagation directions obtained by fracturing simulation, analyze the dynamic impacts of production, workover, and fracturing on the surrounding wells, especially analyze the situation where the fractures in workover and fracturing may extend to the surrounding wells. Combining the above information, analyze the changes in the fluid flow paths of the surrounding wells and the impacts on the downhole pressure distribution caused by these fractures. Evaluate the degree of dynamic interference of production, workover, and fracturing operations on the surrounding wells to obtain the analysis results of production dynamic impacts.

[0112] For S302 to S309, it can be understood as a further explanation of S202. That is to say, step S202 can be refined into the steps of S302 to S309.

[0113] S310. According to the remaining reserve distribution and the analysis results of production dynamic impacts, predict the recovery rate after the repair of the complex wells in the production area to obtain the EUR corresponding to the complex wells, and the EUR reflects the geological potential of the complex wells.

[0114] In this step, by integrating the remaining reserve distribution data and the analysis results of production dynamic impacts, accurately predict the EUR to provide a scientific basis for the development strategy of shale gas. First, by analyzing the remaining reserve distribution, simulate the fluid flow behavior and pressure distribution in the reservoir to predict the EUR of each well. Then, based on the production dynamic data and the EUR of each well, considering the dynamic impacts of production, workover, and fracturing on the surrounding wells, predict the EUR of all wells in the area to be exploited, and quantify the geological potential of the complex wells. Finally, according to the EUR, determine the geological potential of the complex wells and optimize the wells with geological potential.

[0115] Optionally, the above method for evaluating the geological potential of complex wells in the wellbore may further include: after determining the geological potential of the complex wells in the wellbore according to the EUR, based on the EUR corresponding to each repair, determine that the complex well involved in the repair corresponding to the maximum EUR is the well with geological potential.

[0116] Specifically, by comparing the EUR values of different wellbores, it is possible to identify which well shows the greatest production potential after repair or fracturing. The complex well in the wellbore corresponding to the maximum EUR value, that is, the well showing the highest recoverable reserves after repair and fracturing, is regarded as the well with significant development potential and geological potential.

[0117] Optionally, the above method for evaluating the geological potential of complex wellbores in a wellbore may further include: after determining the geological potential of the complex wellbore in the wellbore according to EUR, obtaining the evaluation criteria for the geological potential of the complex wellbore corresponding to the production area, where the evaluation criteria for the geological potential of the complex wellbore in the wellbore are established based on static geological data, dynamic production data, and the geological potential of the complex wellbore in the wellbore; and determining the geological potential wells in the production area according to the evaluation criteria for the geological potential of the complex wellbore in the wellbore.

[0118] Among them, the advantage of establishing the evaluation criteria for the geological potential of complex wellbores in the wellbore based on static geological data and dynamic production data is that it provides comprehensive and accurate evaluation results.

[0119] In application, according to the evaluation criteria for the geological potential of complex wellbores in the wellbore, wells showing high development potential among all wellbores are identified, and these wellbores are the geological potential wells. These geological potential wells usually have excellent reservoir conditions and good production performance. By developing the geological potential wells, the maximum development of oil and gas can be achieved.

[0120] The method for evaluating the geological potential of complex wellbores in the wellbore provided by the embodiments of the present application uses seismic data, logging, mud logging, logging data, core analysis and testing data, and static geological data and dynamic production data such as fracturing construction data in the production area, conducts research from aspects such as reservoir thickness, reservoir geological conditions, horizontal section reservoir drilling encounter, and fracturing transformation effect, predicts the oil and gas flow capacity and fracture propagation direction through technical means such as geological modeling, numerical simulation, and fracturing simulation, finely depicts the reservoir geological characteristics and remaining reserve distribution around each complex wellbore in the wellbore, and determines the analysis of the production dynamics of surrounding wells during the workover and fracturing process of the complex wellbore in the wellbore through technical means such as fracturing simulation and numerical simulation, and completes the EUR prediction after wellbore repair; then, considering factors such as geological conditions and wellbore dynamic influence, establishes the evaluation criteria for the geological potential of complex wellbores in the region, and determines the geological potential wells based on EUR. By developing the geological potential wells, the effect of maximizing oil and gas production, reducing development risks, optimizing resource allocation, and improving the overall development efficiency can be achieved.

[0121] In the embodiments of the present application, an interaction mechanism for various information data is designed. To facilitate the understanding of these interaction processes, the present application provides Figure 4 , Figure 4 which is the information flow diagram of the method for evaluating the geological potential of complex wellbores in the wellbore provided by an embodiment of the present application. The information flow diagram of the method for evaluating the geological potential of complex wellbores in the wellbore details the transfer paths and processing steps of information data between various modules. Through this diagram, the entire process of information data from input to output can be clearly understood, including the mutual relationships of each step. Specifically, the information flow diagram of the method for evaluating the geological potential of complex wellbores in the wellbore mainly includes:

[0122] First, obtain the actual drilling trajectory analysis through seismic data, drilling, logging, and coring data; conduct geological modeling through seismic data, drilling, logging, and coring data; and perform production effect analysis through fracturing construction and dynamic production data.

[0123] Secondly, process the actual drilling trajectory analysis, geological modeling, and production effect analysis obtained from the above analysis; conduct reservoir geological characteristic research through the actual drilling trajectory analysis and geological modeling; perform numerical simulation and fracturing simulation through geological modeling and production effect analysis. The purpose of numerical simulation is to obtain the flow capacity of oil and gas in the formation, and the purpose of fracturing simulation is to obtain the generation and propagation directions of fractures generated by different fracturing schemes in the formation.

[0124] Then, integrate the reservoir geological characteristic research, numerical simulation, and fracturing simulation obtained from the above analysis; respectively obtain the remaining reserve distribution and production dynamic impact analysis results through the integration of reservoir geological characteristic research, numerical simulation, and fracturing simulation. Among them, the remaining reserve distribution identifies unexploited high-potential areas; the production dynamic impact analysis results evaluate the mutual influence between single wells or multiple wells.

[0125] After that, further analyze the remaining reserve distribution and production dynamic impact analysis results, obtain the EUR corresponding to the complex well in the wellbore, establish a geological potential evaluation standard through EUR, and optimize the geological potential wells.

[0126] Applying the geological potential evaluation method for complex wells in the wellbore provided by the embodiments of the present application, 9 geological potential wells were successfully optimized from 37 complex wells in the wellbore of shale gas in a certain place. At present, 2 wells have been implemented and both have achieved good results. The annual production increments are 9.5 million cubic meters and 2.7 million cubic meters respectively, and the predicted EUR increases by 50 million cubic meters and 20 million cubic meters respectively.

[0127] The following is an embodiment of the device of the present application, which can be used to execute the method embodiment of the present application. For the details not disclosed in the embodiment of the device of the present application, please refer to the method embodiment of the present application.

[0128] Figure 5 It is a schematic structural diagram of a geological potential evaluation device for complex wells in the wellbore provided by an embodiment of the present application. As Figure 5 shown, the geological potential evaluation device 50 for complex wells in the wellbore provided by the embodiment of the present application includes:

[0129] An acquisition module 501, configured to acquire static geological data and dynamic production data of the mining area;

[0130] A processing module 502, configured to obtain the remaining reserve distribution and production dynamic impact analysis results of the mining area according to the static geological data and dynamic production data, and the production dynamic impact analysis results reflect the impact on the production dynamics of surrounding wells during the repair and fracturing of complex wells in the wellbore in the mining area;

[0131] A prediction module 503 is configured to predict the recovery factor after the repair of complex wells in the production area based on the remaining reserve distribution and the analysis results of the production dynamics impact, so as to obtain the EUR corresponding to the complex wells in the production area, and the EUR reflects the geological potential of the complex wells in the production area.

[0132] Optionally, the static geological data includes seismic data, drilling, logging, and coring data, and fracturing operation data. Correspondingly, the processing module 502 is specifically configured to:

[0133] Perform real drilling trajectory analysis based on the seismic data, drilling, logging, and coring data to obtain the real drilling trajectory analysis results;

[0134] Perform geological modeling based on the seismic data, drilling, logging, coring data to obtain a three-dimensional geological model;

[0135] Perform production effect analysis based on the fracturing operation data and the dynamic production data to obtain the production effect analysis results;

[0136] Obtain the remaining reserve distribution and the analysis results of the production dynamics impact in the production area based on the real drilling trajectory analysis results, the three-dimensional geological model, and the production effect analysis results.

[0137] In a possible implementation manner, the processing module 502 is further configured to:

[0138] Obtain the reservoir geological characteristics around the complex wells in the production area based on the real drilling trajectory analysis results and the three-dimensional geological model;

[0139] Perform numerical simulation based on the three-dimensional geological model and the production effect analysis results to obtain the flow capacity of oil and gas in the formation;

[0140] Perform fracturing simulation based on the three-dimensional geological model and the production effect analysis results to obtain the generation and propagation directions of the fractures generated by different fracturing schemes in the formation;

[0141] Predict the remaining reserve distribution in the production area based on the reservoir geological characteristics, the flow capacity of oil and gas in the formation, and the generation and propagation directions of the fractures generated by different fracturing schemes in the formation; perform production dynamics impact analysis based on the reservoir geological characteristics, the flow capacity of oil and gas in the formation, and the generation and propagation directions of the fractures generated by different fracturing schemes in the formation to obtain the production dynamics impact analysis results.

[0142] In a possible implementation manner, the prediction module 503 is further configured to: after determining the geological potential of the complex wells in the production area according to the EUR, determine the complex wells in the production area involved in the repair corresponding to the maximum EUR as the wells with geological potential based on the EUR corresponding to each repair.

[0143] In a possible implementation, the prediction module 503 is further configured to: after determining the geological potential of the complex well in the wellbore according to the EUR, obtain the evaluation criteria for the geological potential of the complex well in the wellbore corresponding to the exploitation area, where the evaluation criteria for the geological potential of the complex well in the wellbore are established based on static geological data, dynamic production data, and the geological potential of the complex well in the wellbore; determine the wells with geological potential in the exploitation area according to the evaluation criteria for the geological potential of the complex well in the wellbore.

[0144] The electronic device provided in the embodiment of the present application can execute the method provided in the above method embodiment, and its implementation principle and technical effect are similar, which will not be elaborated here in the embodiment of the present application.

[0145] Figure 6 It is a schematic structural diagram of an electronic device provided in an embodiment of the present application. As Figure 6 shown, the electronic device 60 provided in the embodiment of the present application includes: at least one processor 601 and a memory 602. Optionally, the device 60 further includes a communication component 603. Among them, the processor 601, the memory 602, and the communication component 603 are connected through a bus 606.

[0146] In a specific implementation process, at least one processor 601 executes the computer-executable instructions stored in the memory 602, so that at least one processor 601 executes the above method.

[0147] For the specific implementation process of the processor 601, reference can be made to the above method embodiment, and its implementation principle and technical effect are similar, which will not be elaborated here in this embodiment.

[0148] In the above embodiment, it should be understood that 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), etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in combination with the invention can be directly implemented by a hardware processor or implemented by a combination of hardware and software modules in the processor.

[0149] The memory may include a random access memory (RAM), and may also include a non-volatile memory (NVM), such as at least one disk memory.

[0150] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the buses in the drawings of the present application are not limited to only one bus or one type of bus.

[0151] An embodiment of the present application further provides a wellbore complex well geological potential evaluation system, including: a monitoring system and the computing device described above, wherein the monitoring system is used to collect dynamic production data during the mining process in real time.

[0152] An embodiment of the present application further provides a computer program product, including a computer program, and when the computer program is executed by a processor or the like, the above-described method is implemented.

[0153] An embodiment of the present application further provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed, the above-described method is implemented.

[0154] The above-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as a static random access memory (SRAM), an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a programmable read-only memory (PROM), a read-only memory (ROM), a magnetic memory, a flash memory, a magnetic disk, or an optical disk. The readable storage medium can be any available medium accessible by a general-purpose or special-purpose computer.

[0155] An exemplary readable storage medium is coupled to a processor, so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an ASIC. Of course, the processor and the readable storage medium can also exist as discrete components in a device.

[0156] The division of units is only a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection to each other can be through some interfaces, and the indirect coupling or communication connection of devices or units can be in an electrical, mechanical, or other form.

[0157] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed over multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0158] In addition, each functional unit in various embodiments of the present invention may be integrated into a processing unit, may exist physically separately for each unit, or two or more units may be integrated into one unit.

[0159] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in various embodiments of the present invention. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, ROM, RAM, magnetic disks, or optical discs that can store program codes.

[0160] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When this program is executed, it executes the steps including the above method embodiments; and the aforementioned storage medium includes: various media such as ROM, RAM, magnetic disks, or optical discs that can store program codes.

[0161] Finally, it should be noted that: After considering the specification and practicing the invention disclosed herein, those skilled in the art will easily think of other implementation schemes of the present invention. The present invention aims to cover any variations, uses, or adaptive changes of the present invention. These variations, uses, or adaptive changes follow the general principles of the present invention and include the common general knowledge or conventional technical means in the technical field of the present invention that is not disclosed in the present invention. It is not limited to the exact structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A method for evaluating the geological potential of complex wells in a wellbore, characterized in that, Including: Obtain static geological data and dynamic production data of the mining area, where the static geological data includes seismic data, drilling, logging, and well logging data, core data, and fracturing construction data; Conduct actual drilling trajectory analysis based on the seismic data and the drilling, logging, and well logging data to obtain the actual drilling trajectory analysis result; conduct geological modeling based on the seismic data, the drilling, logging, and well logging data, and the core data to obtain a three-dimensional geological model; Conduct production effect analysis based on the fracturing construction data and the dynamic production data to obtain the production effect analysis result; Obtain the geological information of the formation through the actual drilling trajectory analysis result, determine the shale gas reservoir location through the three-dimensional geological model data, and obtain the reservoir geological characteristics around the complex well in the wellbore according to the geological information and the shale gas reservoir location; Conduct numerical simulation based on the three-dimensional geological model and the production effect analysis result to obtain the flow capacity of oil and gas in the formation; Conduct fracturing simulation based on the three-dimensional geological model and the production effect analysis result to obtain the generation and propagation directions of fractures generated by different fracturing schemes in the formation; Predict the remaining reserve distribution of the mining area according to the reservoir geological characteristics, the flow capacity of oil and gas in the formation, and the generation and propagation directions of fractures generated by different fracturing schemes in the formation; Conduct production dynamic impact analysis according to the reservoir geological characteristics, the flow capacity of oil and gas in the formation, and the generation and propagation directions of fractures generated by different fracturing schemes in the formation to obtain the production dynamic impact analysis result, and the production dynamic impact analysis result reflects the impact on the production dynamics of surrounding wells during the repair and fracturing of complex wells in the wellbore in the mining area; Predict the recovery rate after the repair of the complex well in the wellbore in the mining area according to the remaining reserve distribution and the production dynamic impact analysis result to obtain the expected ultimate recovery rate EUR corresponding to the complex well in the wellbore, and the EUR reflects the geological potential of the complex well in the wellbore.

2. The method according to claim 1, wherein After determining the geological potential of the complex well in the wellbore according to the EUR, it further includes: Based on the EUR corresponding to each repair, determine that the complex well in the wellbore involved in the repair with the maximum EUR is the well with geological potential.

3. The method according to claim 1, wherein After determining the geological potential of the complex well in the wellbore according to the EUR, it further includes: Obtain the geological potential evaluation standard for the complex well in the wellbore corresponding to the mining area, and the geological potential evaluation standard for the complex well in the wellbore is established based on the static geological data, the dynamic production data, and the geological potential of the complex well in the wellbore; Determine the well with geological potential in the mining area according to the geological potential evaluation standard for the complex well in the wellbore.

4. A geological potential evaluation device for complex wells in a wellbore, characterized in that Including: An acquisition module for acquiring static geological data and dynamic production data of the mining area, where the static geological data includes seismic data, drilling, logging, and well logging data, core data, and fracturing construction data; A processing module, configured to perform actual drilling trajectory analysis based on the seismic data, the drilling, logging, and well logging data to obtain an actual drilling trajectory analysis result; perform geological modeling based on the seismic data, the drilling, logging, and well logging data, and the core data to obtain a three-dimensional geological model; perform production effect analysis based on the fracturing construction data and the dynamic production data to obtain a production effect analysis result. Obtain geological information of the formation through the actual drilling trajectory analysis result, determine the shale gas reservoir location through the three-dimensional geological model data, and obtain the reservoir geological characteristics around the complex well in the wellbore based on the geological information and the shale gas reservoir location. Perform numerical simulation based on the three-dimensional geological model and the production effect analysis result to obtain the flow capacity of oil and gas in the formation; perform fracturing simulation based on the three-dimensional geological model and the production effect analysis result to obtain the generation and propagation directions of fractures generated by different fracturing schemes in the formation; predict the remaining reserve distribution in the mining area based on the reservoir geological characteristics, the flow capacity of oil and gas in the formation, and the generation and propagation directions of fractures generated by different fracturing schemes in the formation; perform production dynamic impact analysis based on the reservoir geological characteristics, the flow capacity of oil and gas in the formation, and the generation and propagation directions of fractures generated by different fracturing schemes in the formation to obtain the production dynamic impact analysis result, and the production dynamic impact analysis result reflects the impact on the production dynamics of surrounding wells during the repair and fracturing processes of complex wells in the mining area. A prediction module, configured to predict the recovery rate after the repair of the complex well in the mining area based on the remaining reserve distribution and the production dynamic impact analysis result, to obtain the expected ultimate recovery rate EUR corresponding to the complex well in the wellbore, and the EUR reflects the geological potential of the complex well in the wellbore.

5. A computing device, characterized in that, Comprising: A memory and a processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions, so that the processor executes the method according to any one of claims 1 to 3.

6. A geological potential evaluation system for complex wells in a wellbore, characterized in that, Comprising: A monitoring system and the computing device according to claim 5, wherein the monitoring system is configured to collect dynamic production data during the mining process in real time.

7. A computer-readable storage medium, characterized in that, Computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed, they are used to implement the method according to any one of claims 1 to 3.

8. A computer program product, characterized in that, Comprising a computer program, and when the computer program is executed, it implements the method according to any one of claims 1 to 3.

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