Natural hydrogen interception mining method and system based on fault channel

Abstract

The invention provides a natural hydrogen interception mining method and system based on a fault channel, and belongs to the technical field of natural hydrogen resource exploration and development, and the method comprises the steps: constructing a fault geometric structure model, and recognizing a high-flux migration section and a shallow easy-to-escape section of a fault; taking maximization of well pattern capturing efficiency and minimization of construction risk as targets, and obtaining an optimal well pattern combination through optimization calculation; hydrogen migration and diffusion characteristics under different plugging agent viscosities, injection pressures and flow guide channel layouts are simulated based on the optimal well pattern combination, and hydrogen exploitation dynamic simulation data are obtained; collecting hydrogen dynamic monitoring data in real time; and dynamically comparing the hydrogen dynamic monitoring data with the hydrogen exploitation dynamic simulation data, and correcting the model precision based on the deviation between the hydrogen dynamic monitoring data and the hydrogen exploitation dynamic simulation data. The hydrogen flow interception efficiency, the yield stability and the safety boundary control are remarkably improved, and a systematic engineering path is provided for large-scale and sustainable development of natural hydrogen.

Description

Technical Field

[0001] This invention belongs to the field of natural hydrogen resource exploration and development technology, specifically relating to a method and system for intercepting and mining natural hydrogen based on fault channels. Background Technology

[0002] As a zero-carbon primary energy source, natural hydrogen has been observed to accumulate in stable or semi-stable geological flows and shallow layers in many locations. However, its accumulation-migration-enrichment patterns differ significantly from those of conventional natural gas: natural hydrogen exhibits a dynamic characteristic of "rapid generation-rapid migration-rapid loss." Fault-fracture systems often serve as both efficient migration channels and rapid dissipation channels, resulting in a significant "dislocation" between deep enrichment and surface anomalies. Therefore, large-scale development of natural hydrogen should employ a comprehensive development technology that combines faults as the primary controlling factor with multi-source collaborative identification and integrated forward and inverse modeling methods.

[0003] In terms of migration pathways, the fault-fracture system is the primary controlling factor for natural hydrogen migration. Fault cores and fracture zones can form high-flux channels across scales, driving hydrogen to rise rapidly along tectonic zones; however, this system can also act as a "rapid pressure relief valve" in shallow areas, causing a "dislocation" phenomenon where natural hydrogen is significantly anomalously concentrated at the surface but difficult to concentrate and enrich at depth. Furthermore, due to the significant time-varying nature of natural hydrogen (stress state, pore structure, and fluid chemistry evolve over time), and because fault systems in complex tectonic regions (such as the Northwest Basin Group with its overlapping strike-slip, thrust, and extensional faults) often connect across strata and merge with aquifer systems, a dynamic pattern of "continuous deep recharge – rapid shallow escape" is more likely to emerge. Relying solely on static evaluations is insufficient to form a reliable assessment of hydrogen production capacity.

[0004] Therefore, engineering practice has gradually formed a customized approach with faults as the main control target: first, identify the deep main channel and the shallow easily escaped section, then implement synergistic processes at suitable fault-caprock combinations, and adjust parameters with the help of online monitoring. However, existing adjustment methods lack synergistic adjustment schemes, making it difficult to meet the needs of large-scale, sustainable, and safety-boundary-controlled development of natural hydrogen. Summary of the Invention

[0005] To address the shortcomings of existing technologies in the interception and extraction of natural hydrogen under fault channels, this invention provides a method and system for the interception and extraction of natural hydrogen based on fault channels.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A method for intercepting and extracting natural hydrogen based on fault channels includes the following steps: A basic numerical model for hydrogen migration in the fault zone of the target area is constructed; multi-source data on geological exploration and gas flux in the target area are obtained and input into the basic numerical model to calculate the spatial distribution of hydrogen in the fault zone; based on the spatial distribution of hydrogen in the fault zone, the high-flux main channel segment and shallow easily dissipated segment controlling hydrogen migration in the fault are identified. Based on the high-throughput main channel section and shallow easily escaped section, fault geometric parameters and hydrogen migration path distribution are extracted. An objective function is constructed to maximize well network capture efficiency and minimize construction risk. Well location, well type and well spacing are optimized and calculated to obtain the optimal well network combination parameters. A numerical model for natural hydrogen interception mining is constructed based on the optimal well pattern combination parameters, high-throughput main channel section and fault geometry parameters. In the numerical model for natural hydrogen interception mining, the viscosity of the plugging agent, the injection pressure and the layout of the diversion channel are set to simulate the hydrogen migration and diffusion process in the fault zone and obtain dynamic simulation data of natural hydrogen interception mining. Real-time dynamic monitoring data of hydrogen is collected, and the dynamic monitoring data of hydrogen is dynamically compared with the dynamic simulation data of hydrogen extraction. Based on the deviation between the dynamic monitoring data of hydrogen and the dynamic simulation data of hydrogen extraction, the model parameters of the numerical model of natural hydrogen interception and extraction are corrected, and the control of the natural hydrogen interception and extraction process is dynamically optimized.

[0007] Preferably, the objective function is: ; in, To improve well network capture efficiency; Comprehensive construction risk index.

[0008] Preferably, the well location, well type, and well spacing are optimized to obtain the optimal well pattern combination parameters. Specifically, this involves updating the parameters based on the flux distribution output by the numerical simulation in each iteration using a multi-objective iterative strategy. And calculate the corresponding risk function. By adjusting the well pattern combination parameters, the objective function is made more efficient. The process continues until the solution converges to the optimal solution, yielding the optimal well pattern combination parameters.

[0009] Preferably, a basic numerical model of hydrogen migration in the fault zone is constructed by combining a three-dimensional geological model, a fault network, and a hydrogen migration field; then, the spatial distribution of hydrogen in the fault zone is calculated using finite element numerical simulation and flux inversion algorithms.

[0010] Preferably, the construction of the three-dimensional geological model is based on the characteristics of multi-source data of the target area, dividing the model into three core units according to function and geological attributes, including fault core, fracture zone and surrounding rock; different porosity and permeability parameters and stress response characteristics are assigned to the fault core, fracture zone and surrounding rock respectively, and geological attribute inversion and geometric fitting are performed to obtain the three-dimensional geological model.

[0011] Preferably, when collecting real-time dynamic monitoring data of hydrogen, if the pressure gradient or flow rate change of hydrogen is detected to exceed a preset safety threshold, the abnormal area is marked and a diagnosis is triggered. The historical trend and flow field distribution are compared to identify possible plugging agent failure or hydrogen bypass paths. If the flow field deviates from the normal distribution or the gas composition changes abruptly, it is determined to be an escape risk.

[0012] Preferably, when simulating hydrogen migration and diffusion characteristics under different plugging agent viscosities, injection pressures, and diversion channel layouts based on the optimal well pattern combination to obtain dynamic simulation data of hydrogen extraction, a collaborative extraction process is adopted. By injecting in stages through downhole packers, a collaborative structure of top narrow-band plugging and bottom diversion wells is formed. The collaborative work is achieved through staged packing and multi-valve injection and production systems, so that hydrogen converges into the wellbore along the pressure gradient to form a stable production flow.

[0013] This invention also provides a natural hydrogen interception and extraction system based on fault channels, specifically comprising: The geological modeling and main channel identification module is used to construct a basic numerical model of hydrogen migration in the fault zone of the target area; it acquires multi-source data of geological exploration and gas flux in the target area and inputs them into the basic numerical model to calculate the spatial distribution of hydrogen in the fault zone; and based on the spatial distribution of hydrogen in the fault zone, it identifies the high-flux main channel segment and shallow easily dissipated segment that control hydrogen migration in the fault.

[0014] The well pattern and well type design unit is used to extract fault geometric parameters and hydrogen migration path distribution based on the high-throughput main channel section and shallow easily escaped section. It constructs an objective function to maximize well pattern capture efficiency and minimize construction risk, and optimizes well location, well type and well spacing to obtain the optimal well pattern combination parameters.

[0015] The plugging-drainage coordinated construction unit is used to construct a numerical model for natural hydrogen interception and exploitation based on the optimal well pattern combination parameters, high-throughput main channel section, and fault geometry parameters. In the numerical model for natural hydrogen interception and exploitation, the viscosity of the plugging agent, the injection pressure, and the layout of the diversion channel are set to simulate the hydrogen migration and diffusion process within the fault zone and obtain dynamic simulation data for natural hydrogen interception and exploitation.

[0016] The wellhead and downhole monitoring units are used to collect real-time dynamic monitoring data of hydrogen.

[0017] The data inversion and optimization control unit is used to dynamically compare the hydrogen dynamic monitoring data with the hydrogen extraction dynamic simulation data, correct the model parameters of the natural hydrogen interception extraction numerical model based on the deviation between the hydrogen dynamic monitoring data and the hydrogen extraction dynamic simulation data, and dynamically optimize the control of the natural hydrogen interception extraction process.

[0018] The present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps described in the method for intercepting and mining natural hydrogen based on fault channels.

[0019] The present invention also provides a computer-readable storage medium storing a computer program that, when loaded by a processor, is capable of executing the steps described in the method for intercepting and mining natural hydrogen based on fault channels.

[0020] The natural hydrogen interception and extraction method based on fault channels provided by this invention has the following beneficial effects: This invention constructs a three-dimensional geological model and fault network of the target area containing faults to determine the combination of high-flux fault segments and effective caprocks, achieving precise identification and zonal control of fault transport flux. It identifies high-flux main channel segments and shallow, easily escaped segments controlling hydrogen migration within the faults, clearly defining priority interception targets. The abstract hydrogen migration patterns are transformed into quantified interception area data, directly providing target input for subsequent well network design, avoiding blind well network layout. With the goal of maximizing well network capture efficiency and minimizing construction risks, the optimal well network combination is obtained through optimization calculations, simulating dynamic hydrogen extraction data to provide a basis for parameter optimization and stable production control. Real-time acquisition of dynamic hydrogen monitoring data, based on a deviation correction model between the dynamic monitoring data and the dynamic hydrogen extraction simulation data, realizes a closed-loop system of online component monitoring, model prediction, and parameter optimization. This system can promptly identify flux migration and plugging failures, conduct collaborative dynamic optimization design, and achieve stable production and risk control. Attached Figure Description

[0021] To more clearly illustrate the embodiments and design schemes of the present invention, the accompanying drawings required for this embodiment will be briefly described below. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a flowchart of a natural hydrogen interception and extraction method based on fault channels according to the present invention.

[0023] Figure 2This is a schematic diagram of a natural hydrogen interception and extraction system unit based on a fault channel, according to an embodiment of the present invention. Detailed Implementation

[0024] To enable those skilled in the art to better understand and implement the technical solutions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0025] Example This invention provides a method for intercepting and extracting natural hydrogen based on fault channels, such as... Figure 2 As shown, the specific steps include: Step 1: Geological model construction and fault identification.

[0026] A three-dimensional geological structure model containing faults was constructed using multi-source data, including seismic, well logging, and surface hydrogen flux data. The model uses three domains—fault core, fracture zone, and surrounding rock—as units, assigning different porosity-permeability parameters and stress response characteristics to each. After attribute inversion and geometric fitting, a fault network framework with spatial continuity was obtained, providing the basic physical field for hydrogen flow and diffusion simulation and well network interception design.

[0027] Step 2: Identification of the main channel and the easily escaping section.

[0028] Based on the constructed geological model and fault network framework, finite element numerical simulation and flux inversion algorithms were used to calculate the spatial distribution of hydrogen within the fault zone. Combining the distribution of the geostress field and the integrity index of the caprock, high-flux main channels and shallow, easily escaped sections controlling hydrogen migration within the fault were identified, thus clarifying priority interception targets. These results directly serve as input for well pattern optimization design, providing a quantitative basis for determining priority interception zones. The aforementioned geological model, fault network, and spatial distribution of hydrogen within the fault zone together constitute the fundamental numerical model for hydrogen migration within the fault zone.

[0029] Step 3: Well pattern and well type optimization design.

[0030] Under fault geometry constraints, based on previously identified high-flux main channels and shallow, easily escaped sections, fault geometric parameters and hydrogen migration path distribution are extracted. Taking into account fault strike, dip angle, and hydrogen diffusion characteristics, the optimal intersection angle and well spacing between the wellbore and the fault are determined. The design includes multiple schemes such as horizontal wells along the strike, oblique interceptor wells, and confluence-type "fishbone wells." With the goal of maximizing well network capture efficiency and minimizing construction risk, a dual-objective optimization function for well network capture efficiency and construction risk is established. ,in Well pattern capture efficiency is calculated as the proportion of flux intercepted by the wellbore in the fault to the total flux. The comprehensive construction risk index includes factors such as well inclination complexity, inter-well disturbance, and caprock disturbance. The optimization algorithm employs a multi-objective iterative strategy, updating the flux distribution based on the numerical simulation output in each iteration. And calculate the corresponding risk function. The system continuously adjusts the well location, well type, and well spacing parameters to make the objective function... The process converges to the optimal solution, thereby achieving a dynamic balance between capture efficiency and engineering feasibility. The optimized well location and well spacing parameters will serve as the basis for subsequent plugging-drainage design, ensuring accurate connection between design and construction.

[0031] Step 4: Implement a coordinated approach of blocking and diverting traffic.

[0032] Based on the selected well pattern combination, and considering the fault geometry and high-flux zone distribution, a fault-seepage-reaction coupled numerical model for natural hydrogen interception and extraction is constructed on the basic numerical model obtained in step two. This model simulates hydrogen migration and diffusion characteristics under different plugging agent viscosities, injection pressures, and diversion channel layouts, analyzing the stress-permeability evolution patterns in the plugging and diversion zones. Based on the simulation results, a dual-process approach of "top narrow-band plugging + bottom diversion well" is implemented. Segmented injection via downhole packers forms a "controlled dispersion-convergence" synergistic structure. Both processes work collaboratively through segmented packing and a multi-valve injection-production system, allowing hydrogen to converge along the pressure gradient into the wellbore, forming a stable production flow. This provides data support and a calibration basis for subsequent dynamic monitoring models.

[0033] Step 5: Online monitoring and model prediction.

[0034] During the production phase, hydrogen composition is collected in real time using multi-parameter sensors at the wellhead and downhole. ,pressure ,flow Key data such as monitoring data are automatically imported into the fault-seepage-reaction coupled natural hydrogen interception and extraction numerical model, and dynamically compared with the simulation results. The system analyzes the deviation between observed values ​​and model predictions. Automatically adjust fault conductivity and penetration rate The system continuously refines model accuracy. Predictive analysis and identification are achieved through a combination of threshold judgment and pattern recognition. When a pressure gradient or flow rate change exceeds a preset safety threshold, the system automatically marks the abnormal area and triggers a diagnostic procedure to compare historical trends with the flow field distribution, identifying possible plugging agent failures or hydrogen bypass paths. If the flow field deviates from the normal distribution or gas composition changes abruptly, it is further determined to be an escape risk. The system dynamically displays these changes on the monitoring interface, enabling visualized prediction and early warning of plugging effectiveness, flow field evolution, and hydrogen migration status.

[0035] Step Six: Dynamic Optimization and Stable Production Control.

[0036] Based on dynamic monitoring and the monitoring and model prediction results from the previous step, an extraction control objective function is constructed to improve hydrogen production and well network capture efficiency within a given prediction time range, while ensuring that bottomhole pressure and caprock safety factor meet preset safety boundaries. ,in Well network capture efficiency represents the hydrogen capture capacity of a well network within a specified area; A comprehensive construction risk index is used to consider potential risks during well location selection, well spacing, well type design, and construction. α and β are weighting coefficients for well pattern capture efficiency and construction risk, respectively, used to adjust their importance. Based on the production control objective function, wellbore pressure and hydrogen flow distribution are predicted and analyzed. On this basis, injection pressure, plugging agent injection volume, and the opening and closing status of each well section are used as control variables. The natural hydrogen interception production numerical model from step five is called to predict and calculate the wellbore pressure and hydrogen flow distribution under different combinations of control parameters. An iterative optimization algorithm is used to solve for the optimal combination of control parameters to achieve the production control objective function, ultimately forming an integrated closed-loop management system from hydrogen capture to stable production control.

[0037] Based on the above method, a natural hydrogen interception and extraction system based on fault channels is constructed, such as... Figure 2 As shown, it mainly consists of the following seven functional units: (1) Geological modeling and main channel identification unit: The fault geometry model is constructed using multi-source data such as earthquake, gravity, magnetic and electric, well logging, remote sensing and soil gas. Combined with hydrogen flux distribution, the high flux migration segment and shallow easily dissipated segment of the fault are identified.

[0038] (2) Well network and well type design unit: Based on the fault strike, dip angle, conduction characteristics and geostress field, determine the quantitative layout rules for well location, well type and well spacing. Horizontal wells arranged along the strike, interception wells obliquely intersecting the fault, or converging fishbone wells can be used to effectively intercept the main hydrogen flow channel.

[0039] (3) Blocking-drainage coordinated construction unit: Injecting a plugging agent into the shallow high-permeability section to form a "top control zone", injecting a low-viscosity diverting agent into the fault core and wellbore adjacent area to form a "bottom diversion section", and controlling hydrogen extraction through segmented packers and injection-production switching valves.

[0040] (4) Dynamic calibration unit for fault conductivity: The permeability of fault rock samples under different normal stress, shear stress and time conditions is determined by high temperature and high pressure triaxial fracturing experiments. The time-varying function of conductivity coefficient is established and embedded into the numerical model to achieve dynamic correction in the field.

[0041] (5) Wellhead and downhole monitoring unit: gas phase component sensors and pressure and flow meters are installed inside the well to monitor the concentration and flow rate changes of H2, He, CH4 and N2 in real time; transient pressure well tests are conducted between wells to invert changes in conductivity and flux transfer.

[0042] (6) Data inversion and optimization control unit: The monitoring data is imported into the fault seepage numerical model in real time, and the parameters are dynamically corrected and the operation instructions are automatically optimized through inversion and predictive control algorithms.

[0043] (7) Safety control and gas-liquid separation unit: A gas-liquid separation device and an inert gas replacement system are set up at the wellhead. Production safety is ensured by LEL lower explosion limit alarm and automatic interlock valve.

[0044] Through the linkage of the above modules, this system can achieve closed-loop control of the entire process from fault identification to capacity regulation.

[0045] The modules in the aforementioned natural hydrogen interception and extraction system based on fault channels can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the memory of a computer device as software, so that the processor can call and execute the corresponding operations of each module.

[0046] The present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory. The processor executes the computer program to implement the steps in an embodiment of a method for intercepting and mining natural hydrogen based on fault channels. Specific implementation methods can be found in the method embodiments, and will not be repeated here.

[0047] Furthermore, the present invention also provides a non-transitory computer-readable storage medium containing instructions, on which a computer program is stored. For example, a memory containing instructions that can be executed by a processor of a computer device to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc. When the computer program is executed by the processor, it can implement the steps in an embodiment of a method for intercepting and mining natural hydrogen based on fault channels. Specific implementation methods can be found in the method embodiments, which will not be repeated here.

[0048] Those skilled in the art will understand that embodiments of the present invention can provide methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0049] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, as well as combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0050] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0051] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0052] It should be noted that the specific embodiments described above enable those skilled in the art to more fully understand the present invention, but do not limit the present invention in any way. Therefore, although the present invention has been described in detail in this specification and embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention; and all technical solutions and improvements that do not depart from the spirit and scope of the present invention are covered within the protection scope of the present invention patent. No reference numerals in the claims should be construed as limiting the scope of the claims. Any simple variations or equivalent substitutions of technical solutions that can be readily obtained by those skilled in the art within the scope of the technology disclosed in the present invention are within the protection scope of the present invention.

Claims

1. A method for intercepting and extracting natural hydrogen based on fault channels, characterized in that, Includes the following steps: Construct a basic numerical model for hydrogen transport in the fault zone of the target region; The multi-source data of geological exploration and gas flux in the target area are input into the basic numerical model to calculate the spatial distribution of hydrogen in the fault zone. Based on the spatial distribution of hydrogen in the fault zone, the high-flux main channel segment and shallow easily dissipated segment controlling hydrogen migration in the fault are identified. Based on the high-throughput main channel section and shallow easily escaped section, fault geometric parameters and hydrogen migration path distribution are extracted. An objective function is constructed to maximize well network capture efficiency and minimize construction risk. Well location, well type and well spacing are optimized and calculated to obtain the optimal well network combination parameters. A numerical model for natural hydrogen interception mining is constructed based on the optimal well pattern combination parameters, high-throughput main channel section and fault geometry parameters. In the numerical model for natural hydrogen interception mining, the viscosity of the plugging agent, the injection pressure and the layout of the diversion channel are set to simulate the hydrogen migration and diffusion process in the fault zone and obtain dynamic simulation data of natural hydrogen interception mining. Real-time dynamic monitoring data of hydrogen is collected, and the dynamic monitoring data of hydrogen is dynamically compared with the dynamic simulation data of hydrogen extraction. Based on the deviation between the dynamic monitoring data of hydrogen and the dynamic simulation data of hydrogen extraction, the model parameters of the numerical model of natural hydrogen interception and extraction are corrected, and the control of the natural hydrogen interception and extraction process is dynamically optimized.

2. The method for intercepting and extracting natural hydrogen based on fault channels according to claim 1, characterized in that, The objective function is specifically: ; in, To improve well network capture efficiency; Comprehensive construction risk index.

3. The method for intercepting and extracting natural hydrogen based on fault channels according to claim 2, characterized in that, Optimization calculations are performed on well location, well type, and well spacing to obtain the optimal well pattern combination parameters. Specifically, a multi-objective iterative strategy is used to update the flux distribution based on the numerical simulation output in each iteration. And calculate the corresponding risk function. By adjusting the well pattern combination parameters, the objective function is made more efficient. The process continues until the solution converges to the optimal solution, yielding the optimal well pattern combination parameters.

4. The method for intercepting and extracting natural hydrogen based on fault channels according to claim 1, characterized in that, A basic numerical model of hydrogen migration in the fault zone is constructed by combining a three-dimensional geological model, a fault network, and a hydrogen migration field; then, the spatial distribution of hydrogen in the fault zone is calculated using finite element numerical simulation and flux inversion algorithm.

5. A method for intercepting and extracting natural hydrogen based on fault channels according to claim 4, characterized in that, The construction of the three-dimensional geological model is specifically based on the characteristics of multi-source data of the target area, dividing the model into three core units according to function and geological attributes, including fault core, fracture zone and surrounding rock; different porosity and permeability parameters and stress response characteristics are assigned to the fault core, fracture zone and surrounding rock respectively, and geological attribute inversion and geometric fitting are performed to obtain the three-dimensional geological model.

6. The method for intercepting and extracting natural hydrogen based on fault channels according to claim 1, characterized in that, It also includes marking abnormal areas and triggering diagnosis when hydrogen pressure gradient or flow rate changes exceed preset safety thresholds during real-time collection of hydrogen dynamic monitoring data. By comparing historical trends with flow field distribution, possible plugging agent failures or hydrogen bypass paths can be identified. If the flow field deviates from the normal distribution or gas composition changes abruptly, it is determined to be an escape risk.

7. The method for intercepting and extracting natural hydrogen based on fault channels according to claim 1, characterized in that, When simulating hydrogen migration and diffusion characteristics under different plugging agent viscosities, injection pressures, and diversion channel layouts based on the optimal well pattern combination, and obtaining dynamic simulation data of hydrogen extraction, a collaborative extraction process is adopted. By injecting in stages through downhole packers, a collaborative structure of top narrow-band plugging and bottom diversion wells is formed. The collaborative work of staged packing and multi-valve injection and production system is achieved, so that hydrogen converges into the wellbore along the pressure gradient to form a stable production flow.

8. A natural hydrogen interception and extraction system based on fault channels, characterized in that, include: The geological modeling and main channel identification module is used to construct a basic numerical model of hydrogen migration in the fault zone of the target area. The multi-source data of geological exploration and gas flux in the target area are input into the basic numerical model to calculate the spatial distribution of hydrogen in the fault zone. Based on the spatial distribution of hydrogen in the fault zone, the high-flux main channel segment and shallow easily dissipated segment controlling hydrogen migration in the fault are identified. The well pattern and well type design unit is used to extract fault geometric parameters and hydrogen migration path distribution based on the high-throughput main channel section and shallow easily escaped section. It constructs an objective function to maximize well pattern capture efficiency and minimize construction risk, and optimizes the well location, well type and well spacing to obtain the optimal well pattern combination parameters. The plugging-diversion coordinated construction unit is used to construct a numerical model for natural hydrogen interception and exploitation based on the optimal well pattern combination parameters, high-throughput main channel section and fault geometry parameters. In the numerical model for natural hydrogen interception and exploitation, the viscosity of the plugging agent, the injection pressure and the layout of the diversion channel are set to simulate the hydrogen migration and diffusion process in the fault zone and obtain dynamic simulation data of natural hydrogen interception and exploitation. Wellhead and downhole monitoring units are used to collect real-time dynamic monitoring data of hydrogen. The data inversion and optimization control unit is used to dynamically compare the hydrogen dynamic monitoring data with the hydrogen extraction dynamic simulation data, correct the model parameters of the natural hydrogen interception extraction numerical model based on the deviation between the hydrogen dynamic monitoring data and the hydrogen extraction dynamic simulation data, and dynamically optimize the control of the natural hydrogen interception extraction process.

9. A computer device, comprising a memory, a processor, and a computer program stored in the memory, characterized in that, The processor executes the computer program to implement the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is loaded by the processor, it is able to perform the steps of the method according to any one of claims 1 to 7.

Images