A hydrogen source rock in-situ catalytic circulation hydrogen generation method and system based on multi-field coupling regulation

Abstract

This invention relates to the fields of hydrogen energy development, in-situ geological hydrogen production, and multi-field coupled intelligent control technology. Specifically, it relates to a method and system for in-situ catalytic recycling of hydrogen from source rocks based on multi-field coupled control. This method first delineates suitable hydrogen source rock target areas based on geological exploration data, deploys injection and production wells, and constructs a network of interconnected fracturing fractures, while simultaneously collecting formation and operational parameters. A four-field coupled benchmark system is established, and a highly active catalytic fluid is prepared. The synergistic effect of temperature, pressure, chemical, and flow fields is utilized to enhance the in-situ serpentinization hydrogen production reaction of ferrous minerals. The produced hydrogen-rich fluid is separated and purified, and hydrogen gas is used for liquid-phase fluid reflux to form a closed-loop cycle. Simultaneously, operating parameters are adaptively adjusted based on monitoring data. This scheme effectively improves hydrogen production efficiency, avoids abnormal operating conditions, ensures long-term stable system operation, and achieves long-term, in-situ, cyclical hydrogen production from source rocks.

Description

Technical Field

[0001] This invention relates to the fields of hydrogen energy development, in-situ geological hydrogen production, and multi-field coupling intelligent control technology. Specifically, it relates to a method and system for in-situ catalytic recycling of hydrogen from hydrogen source rocks based on multi-field coupling control. Background Technology

[0002] With the advancement of the dual-carbon strategy, low-cost, zero-pollution green hydrogen technology has become a research focus in the new energy field. In-situ serpentine-based hydrogen production from hydrogen source rocks relies on the natural reaction of underground iron-rich minerals to produce hydrogen. It has the advantages of large resource reserves, low carbon emissions, environmental friendliness, and low energy consumption. It can avoid the drawbacks of high energy consumption and high cost of traditional water electrolysis for hydrogen production. It is a new type of hydrogen production technology with great industrialization potential and is gradually attracting widespread attention from the industry.

[0003] Currently, most mainstream in-situ hydrogen generation technologies from source rocks adopt a single-parameter control mode, relying solely on fixed process parameters to carry out hydrogen generation operations. They fail to consider the synergistic effects of multiple underground fields such as temperature, pressure, chemistry, and fluids, and lack a comprehensive system for identifying and adaptively controlling different operating conditions. Faced with dynamic conditions such as changes in formation fractures and the attenuation of mineral reactions, they cannot achieve dynamic parameter matching and are ill-suited to the complex underground in-situ hydrogen generation environment.

[0004] The core technical problem of the existing technology is that it cannot achieve precise coupling and coordinated control of the four fields of temperature field, pressure field, chemical field and flow field, and adaptive parameter tuning under all working conditions. This can easily lead to problems such as mineral passivation, cracked network seepage blockage and unbalanced production capacity in different areas, resulting in continuous decline in hydrogen production efficiency, poor system operation stability and inability to achieve long-term closed-loop stable hydrogen production. Summary of the Invention

[0005] In view of this, the present invention proposes an in-situ catalytic recycling method and system for hydrogen source rock based on multi-field coupling control. It aims to solve the problems in the existing technology that cannot achieve precise coupling and coordinated control of the four fields of temperature field, pressure field, chemical field and flow field and adaptive parameter tuning under all working conditions. These problems easily lead to mineral passivation, crack network seepage blockage and regional production imbalance, resulting in continuous decline in hydrogen generation efficiency, poor system operation stability and inability to achieve long-term closed-loop stable hydrogen generation.

[0006] In a first aspect, the present invention provides an in-situ catalytic cyclic hydrogen generation method based on multi-field coupling regulation of hydrogen source rocks, comprising the following steps: By integrating multi-source geological exploration data, hydrogen source rock target areas with adequate ferrous mineral content and fracture development were delineated. Raw data on mineral distribution, fracture development, formation permeability, and primary temperature and pressure properties of the formation were collected. Injection wells and extraction wells with horizontal parallel projection overlap were deployed in the target area. A connected underground fracturing network was constructed through directional fracturing, and data on temperature, pressure, fluid physicochemical parameters, seepage flow rate, and hydrogen generation rate were collected in real time. Based on the original physical property data, a baseline parameter standard is established, and a four-field coupled benchmark parameter system of temperature field, pressure field, chemical field and flow field is constructed. The circulating fluid after gas-liquid separation is adjusted by reagent ratio, acid-base adjustment, high temperature heating and high pressure boosting to be adjusted to the optimal process range. The injection flow rate is differentiated according to the target area fracture development characteristics to prepare a multi-field coupled high-activity catalytic fluid. The prepared highly active catalytic fluid is pumped into the underground fracturing network. The temperature field accelerates the reaction kinetics, the pressure field drives the fluid seepage contact, the chemical field reduces the reaction activation energy, and the flow field balances the fluid distribution in the network. The four fields work together to enhance the in-situ serpentine hydrogen generation reaction of ferrous minerals, and continuously generate gas-liquid mixed hydrogen-rich fluid. The underground hydrogen-rich fluid is extracted to the surface for gas-liquid separation. The crude hydrogen is purified and stored for use. The liquid phase fluid is refluxed and activated to form a closed loop. The operating parameters are adaptively tuned by comparing real-time monitoring data with the four-field coupling benchmark threshold.

[0007] In some embodiments, when the hydrogen source rock target area is delineated based on the ferrous mineral content and fracture development meeting the standards by integrating multi-source geological exploration data, and raw data on mineral distribution, fracture development, formation permeability, and primary temperature and pressure formation properties are collected in the target area, injection wells and extraction wells with overlapping horizontal projections are deployed in the target area, a connected underground fracturing network is constructed through directional fracturing, and data on temperature, pressure, fluid physicochemical parameters, seepage flow rate, and hydrogen generation rate are collected in real time, the process includes: Configure a multi-layered progressive logic judgment mechanism. This mechanism adopts a three-layered logic architecture for hierarchical constraints and operating condition judgments, including bottom-level general constraint judgments, middle-level operating condition layered judgments, and top-level specific operating condition judgments. Define the underlying general constraint judgment as the basic judgment rule applicable to the whole domain. The basic judgment rule includes multi-parameter joint judgment, parameter sudden change and gradual change identification, working condition priority interlock, and parameter gradual fine-tuning criterion. The definition of the middle layer working condition stratification is a standardized judgment based on four common core working conditions: hydrogen generation rate decay, mineral surface passivation, flow field seepage blockage, and multi-field parameter mismatch. The upper-level special working condition judgment is defined as a customized judgment for four special edge working conditions: regional production capacity imbalance, parameter safety exceeding limits, fluid composition abnormality, and dual-well injection-production pressure difference imbalance. It controls the top-down hierarchical linkage and step-by-step constraints of the bottom, middle and top layers, fully covering all operating conditions and completing logic recognition and autonomous control triggering.

[0008] In some embodiments, the step of establishing baseline parameter standards based on the original physical property data, constructing a four-field coupled reference parameter system of temperature field, pressure field, chemical field, and flow field, and adjusting the circulating fluid after gas-liquid separation by reagent ratio, acid-base adjustment, high-temperature heating, and high-pressure boosting to achieve the optimal process range, and differentially allocating the injection flow rate based on the target area fracture development characteristics to prepare a multi-field coupled highly active catalytic fluid includes: Determine whether the deviation of a single operating parameter from the baseline threshold is less than the preset deviation threshold; When the deviation of a single operating parameter from the baseline threshold is less than the preset deviation threshold, only data is recorded, the real-time control command is discarded, and the existing operating state is maintained. When the deviation of a single operating parameter from the benchmark threshold is greater than or equal to the preset deviation threshold, proceed to the next step of joint verification. Determine whether there are two or more parameters that deviate from the baseline threshold simultaneously within the same field, or whether there are multiple field parameters that deteriorate simultaneously across temperature, pressure, chemical, and flow fields; When two or more parameters within the same field do not deviate synchronously and parameters across different fields do not deteriorate synchronously, the operating condition is considered normal, and the existing parameters are maintained. When two or more parameters within the same field deviate synchronously or when parameters across different fields deteriorate synchronously, it is determined to be an abnormal actual operating condition.

[0009] In some embodiments, when establishing baseline parameter standards based on the original physical property data, constructing a four-field coupled reference parameter system of temperature field, pressure field, chemical field, and flow field, adjusting the reagent ratio, acid-base regulation, high-temperature heating, and high-pressure boosting of the circulating fluid after gas-liquid separation to the optimal process range, and differentiating the injection flow rate based on the target area fracture development characteristics to prepare a multi-field coupled highly active catalytic fluid, the process further includes: Determine whether real-time operating parameters change instantaneously beyond a preset abrupt change threshold; When the real-time operating parameters change instantaneously beyond the preset sudden change judgment threshold, it is judged as an equipment abnormality, well leakage or sudden blockage of formation fissures, and the condition type is locked for logical control to be called. If the real-time operating parameters do not change instantaneously beyond the preset sudden change judgment threshold, then proceed to the next step of gradual change verification. Determine whether the decay time of the operating parameters has reached the preset slow change period threshold and whether the parameters have not gradually converged to the reference range; When the decay time of the operating parameters does not reach the preset slow change period threshold or the parameters gradually converge to the reference range, the operating condition is determined to be stable and no parameter tuning is required. When the decay time of the operating parameters reaches the preset slow change period threshold and the parameters do not gradually converge to the benchmark range, it is determined to be a condition of weakened hydrogen generation reaction, passivation of mineral surface or gradual blockage of crack network, and the condition type is locked for logical control and call.

[0010] In some embodiments, the process of extracting underground hydrogen-rich fluid to the surface for gas-liquid separation, purifying and storing the crude hydrogen, recirculating the liquid phase fluid to activate and form a closed-loop cycle, and comparing real-time monitoring data with four-field coupling benchmark thresholds to adaptively adjust operating parameters includes: The preset operating conditions are prioritized as follows: parameter safety exceeding limits, pressure difference imbalance between injection and production in two wells, abnormal fluid composition, mineral passivation, flow field blockage, hydrogen generation rate decay, multi-field parameter mismatch, and regional production capacity imbalance. Among them, the highest priority condition is the parameter safety limit exceeding the limit, and the next lowest priority conditions are the pressure difference imbalance between injection and production in dual wells, abnormal fluid composition, mineral passivation, flow field blockage, hydrogen generation rate decay, multi-field parameter mismatch, and regional production capacity imbalance. Determine whether the highest priority condition has been triggered. When the highest priority condition judgment is triggered, the control execution logic of all low priority conditions is automatically locked, and multiple control commands are prohibited from taking effect in parallel. If the highest priority operating condition judgment is not triggered at present, the corresponding level of control instruction will be matched according to the real-time operating condition, and the parameter tuning will be executed in an orderly manner.

[0011] In some embodiments, the process of pumping the prepared highly active catalytic fluid into an underground hydraulic fracturing network, relying on a temperature field to accelerate reaction kinetics, a pressure field to drive fluid seepage contact, a chemical field to reduce reaction activation energy, and a flow field to balance fluid distribution within the fracturing network, synergistically enhances the in-situ serpentinization and hydrogen generation reaction of ferrous minerals, continuously generating a gas-liquid mixed hydrogen-rich fluid, includes: Independently collect hydrogen generation rate, rock permeability, and fracture network temperature and pressure distribution parameters for each sub-block of the target area; Determine whether the difference in hydrogen production rate between any two sub-blocks exceeds a preset proportional threshold. When the difference in hydrogen production rate between any two sub-blocks does not exceed the preset ratio threshold, the partition capacity is determined to be balanced, and the existing flow field distribution state is maintained. When the difference in hydrogen production rate between any two sub-blocks exceeds the preset ratio threshold, it is determined whether the duration of the rate deviation has reached the preset monitoring cycle threshold and whether the difference in hydrogen production rate has not gradually converged to the baseline interval. When the duration of the rate deviation does not reach the preset monitoring cycle threshold, or when the difference in hydrogen production rate gradually converges to the baseline range, the control will not be implemented for the time being, and the parameter changes will be continuously monitored. When the rate deviation lasts for a period of time that reaches the preset monitoring cycle threshold, and the difference in hydrogen production rate does not gradually converge toward the baseline range, it is determined to be an imbalance in the flow field distribution, triggering segmented flow rate differentiation and fine-tuning of the chemical parameters in the low-production area within the process range.

[0012] In some embodiments, when establishing baseline parameter standards based on the original physical property data, constructing a four-field coupled reference parameter system of temperature field, pressure field, chemical field, and flow field, adjusting the reagent ratio, acid-base regulation, high-temperature heating, and high-pressure boosting of the circulating fluid after gas-liquid separation to the optimal process range, and differentiating the injection flow rate based on the target area fracture development characteristics to prepare a multi-field coupled highly active catalytic fluid, the process further includes: Preset process boundary thresholds corresponding to temperature, injection pressure, fluid pH, and catalyst concentration; Determine whether the real-time operating parameters exceed the corresponding preset process boundary threshold; When the real-time operating parameters do not exceed the preset process boundary threshold, the parameter operation is deemed compliant, and normal control and fluid injection operations are maintained. When the real-time operating parameters exceed the preset process boundary threshold, the safety self-locking judgment logic is immediately triggered, and the parameter adjustment and fluid injection execution actions are automatically suspended. The system synchronously locks the user's permission to modify parameters until the operating parameters return to the baseline compliance range. The self-locking constraint is then automatically released and normal operation resumes.

[0013] In some embodiments, when establishing baseline parameter standards based on the original physical property data, constructing a four-field coupled reference parameter system of temperature field, pressure field, chemical field, and flow field, adjusting the reagent ratio, acid-base regulation, high-temperature heating, and high-pressure boosting of the circulating fluid after gas-liquid separation to the optimal process range, and differentiating the injection flow rate based on the target area fracture development characteristics to prepare a multi-field coupled highly active catalytic fluid, the process further includes: Simultaneously collect three types of indicators in the circulating fluid: ferrous dissolution concentration, carbonate impurity content, and fluid pH fluctuation range. Determine whether the decrease in ferrous leaching reaches the preset concentration warning threshold, whether the carbonate impurity content exceeds the preset impurity threshold, or whether the pH fluctuation exceeds the preset fluctuation threshold. When none of the three indicators trigger the corresponding preset threshold, the chemical field steady state is determined to be normal, and the existing reagent ratio and fluid circulation state are maintained. When any preset threshold condition is triggered, it is determined that the chemical field is out of balance and the mineral reactivity is reduced, triggering the automatic replenishment of alkaline agents to stabilize the acid-base environment; Further determine whether the circulating fluid level and the remaining amount of catalyst are below their respective preset reserve thresholds; When the fluid level or remaining drug quantity is lower than the preset reserve threshold, the fluid and drug replenishment operation will be completed automatically.

[0014] In some embodiments, when the prepared highly active catalytic fluid is pumped into an underground hydraulic fracturing network, relying on the temperature field to accelerate reaction kinetics, the pressure field to drive fluid seepage contact, the chemical field to reduce reaction activation energy, and the flow field to balance the fluid distribution in the fracturing network, the four fields synergistically enhance the in-situ serpentinization hydrogen generation reaction of ferrous minerals, continuously generating a gas-liquid mixed hydrogen-rich fluid, the process further includes: Collect parameters such as injection wellhead pressure, extraction well production pressure, inter-well pressure difference, and fluid extraction flow rate. Determine whether the inter-well pressure difference exceeds the preset pressure difference threshold; When the pressure difference between wells does not exceed the preset pressure difference threshold, the injection and production pressure fields are determined to be in balance, and the existing injection and production conditions are maintained. When the inter-well pressure difference exceeds the preset pressure difference threshold, it is determined whether the decrease in fluid extraction flow rate reaches the preset flow rate attenuation threshold. When the inter-well pressure difference exceeds the limit but the flow rate decrease does not reach the preset flow rate attenuation threshold, it is determined to be an instantaneous pressure fluctuation, and continuous monitoring is performed without implementing control measures. When the inter-well pressure difference exceeds the limit and the flow rate decrease reaches the preset flow rate attenuation threshold, it is determined that the fracture network seepage channel is deviated or the local fracture is closed, triggering the linkage logic of reconstructing the formation pressure gradient and appropriately increasing the temperature to reduce the fluid viscosity, and working together to clear the seepage channel and restore the injection-production balance. Simultaneously collect data on changes in hydrogen generation rate, ferrous dissolution amount, and fluctuations in fluid physicochemical parameters; Determine whether the decrease in hydrogen generation rate reaches the preset rate decay threshold, whether the decrease in ferrous leaching reaches the preset leaching warning threshold, and whether the fluctuation of fluid physicochemical parameters does not exceed the allowable fluctuation range; If both threshold trigger conditions are not met simultaneously, it is determined that there is no passivation on the mineral surface, and the normal circulating hydrogen generation condition is maintained. When two threshold triggering conditions are met simultaneously, the mineral surface is determined to be passivated, and an acidic solution of a limited concentration is automatically pumped in to perform etching and passivation removal treatment. After etching is completed, determine the degree of recovery of hydrogen generation rate and whether the ferrous dissolution stability reaches the preset working condition stability judgment threshold. If the preset stability threshold is not reached, the monitoring period will be extended and observation will continue. When the preset stable operating condition threshold is reached, instantaneous parameter jumps and resets are prohibited, and a phased step-by-phase parameter callback is executed to gradually return to the standard hydrogen production operating condition.

[0015] Secondly, the present invention provides an in-situ catalytic cyclic hydrogen generation system based on multi-field coupling regulation of hydrogen source rocks, comprising: The acquisition module is configured to integrate multi-source geological exploration data to delineate hydrogen source rock target areas with adequate ferrous mineral content and fracture development. It collects raw data on mineral distribution, fracture development, formation permeability, and primary temperature and pressure formation properties in the target area. It deploys injection wells and extraction wells with horizontally overlapping projections in the target area, constructs a connected underground fracturing network through directional fracturing, and collects data on temperature, pressure, fluid physicochemical parameters, seepage flow rate, and hydrogen generation rate in real time. The preparation module is configured to establish baseline parameter standards based on the original physical property data, construct a four-field coupled reference parameter system of temperature field, pressure field, chemical field and flow field, and adjust the reagent ratio, acid and base adjustment, high temperature heating and high pressure boosting of the circulating fluid after gas-liquid separation to the optimal process range, and differentiate the injection flow rate based on the target area fracture development characteristics to prepare a multi-field coupled high-activity catalytic fluid. The reaction module is configured to pump the prepared highly active catalytic fluid into the underground fracturing network. It relies on the temperature field to accelerate the reaction kinetics, the pressure field to drive the fluid seepage contact, the chemical field to reduce the reaction activation energy, and the flow field to balance the fluid distribution in the network. The four fields work together to enhance the in-situ serpentinization hydrogen generation reaction of ferrous minerals and continuously generate gas-liquid mixed hydrogen-rich fluid. The control module is configured to extract underground hydrogen-rich fluid to the surface to complete gas-liquid separation, purify crude hydrogen for storage and utilization, recirculate liquid fluid to activate and form a closed-loop cycle, and compare real-time monitoring data with four-field coupling benchmark thresholds to adaptively adjust operating parameters.

[0016] Compared with existing technologies, the beneficial effects of this invention are as follows: This application accurately delineates high-quality hydrogen-generating target areas through multi-source geological data, and constructs a connected fracture network through directional fracturing, providing stable formation seepage and reaction space for in-situ hydrogen generation reactions. Simultaneously, it constructs a four-field coupled benchmark system of temperature, pressure, chemistry, and fluid, and differentiates and allocates highly active catalytic fluids. Through the synergistic effect of these four fields, it reduces the reaction activation energy, accelerates reaction kinetics, and balances fluid distribution, effectively enhancing the hydrogen generation efficiency of serpentine-rich iron minerals. Furthermore, this application achieves a closed-loop circulation mode of surface gas-liquid separation of hydrogen-rich fluids, hydrogen purification and utilization, and liquid-phase fluid reflux activation. Combined with real-time data monitoring and adaptive tuning of operating parameters, it can effectively avoid problems such as mineral passivation, seepage blockage, and production imbalance, significantly improving the operational stability and sustainability of the hydrogen generation system, reducing hydrogen production costs, and achieving long-term stable in-situ hydrogen generation.

[0017] The above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0018] Other features and aspects of the present invention will become clearer from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a flowchart of an in-situ catalytic cyclic hydrogen generation method based on multi-field coupling regulation provided in an embodiment of the present invention. Figure 2 A functional block diagram of an in-situ catalytic recycling hydrogen generation system based on multi-field coupling regulation provided in an embodiment of the present invention. Detailed Implementation

[0021] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] See Figures 1-2 As shown in the first embodiment, a method for in-situ catalytic recycling of hydrogen from hydrogen source rocks based on multi-field coupling regulation according to an embodiment of this application includes the following steps: By integrating multi-source geological exploration data, hydrogen source rock target areas with adequate ferrous mineral content and fracture development were delineated. Raw data on mineral distribution, fracture development, formation permeability, and primary temperature and pressure properties of the formation were collected. Injection wells and extraction wells with horizontal parallel projection overlap were deployed in the target area. A connected underground fracturing network was constructed through directional fracturing, and data on temperature, pressure, fluid physicochemical parameters, seepage flow rate, and hydrogen generation rate were collected in real time. Based on the original physical property data, a baseline parameter standard is established, and a four-field coupled benchmark parameter system of temperature field, pressure field, chemical field and flow field is constructed. The circulating fluid after gas-liquid separation is adjusted by reagent ratio, acid-base adjustment, high temperature heating and high pressure boosting to be adjusted to the optimal process range. The injection flow rate is differentiated according to the target area fracture development characteristics to prepare a multi-field coupled high-activity catalytic fluid. The prepared highly active catalytic fluid is pumped into the underground fracturing network. The temperature field accelerates the reaction kinetics, the pressure field drives the fluid seepage contact, the chemical field reduces the reaction activation energy, and the flow field balances the fluid distribution in the network. The four fields work together to enhance the in-situ serpentine hydrogen generation reaction of ferrous minerals, and continuously generate gas-liquid mixed hydrogen-rich fluid. The underground hydrogen-rich fluid is extracted to the surface for gas-liquid separation. The crude hydrogen is purified and stored for use. The liquid phase fluid is refluxed and activated to form a closed loop. The operating parameters are adaptively tuned by comparing real-time monitoring data with the four-field coupling benchmark threshold.

[0023] It should be understood that, firstly, multi-source geological exploration data are integrated to select areas with adequate ferrous mineral content and fracture development as hydrogen source rock target areas. Simultaneously, raw data on formation properties such as mineral distribution, fracture morphology, formation permeability, and primary temperature and pressure are collected. Injection and extraction wells are deployed within the target area, ensuring that the horizontal projections of the two wells overlap. A network of interconnected fractures is constructed underground using directional fracturing technology. Throughout the operation, real-time data on formation temperature, fluid pressure, fluid physicochemical properties, seepage flow rate, and hydrogen generation rate are collected. Based on the collected raw formation property data, a unified baseline parameter standard is established, and a four-field coupled benchmark parameter system (temperature field, pressure field, chemical field, and flow field) is constructed. The circulating fluid after surface gas-liquid separation undergoes reagent ratio adjustments, acid-base regulation, high-temperature heating, and high-pressure boosting to adjust fluid parameters to the preset optimal process range. The injection flow rate is differentiated based on the varying fracture development in different regions to produce a multi-field coupled, highly active catalytic fluid. The prepared catalytic fluid is pumped into an underground interconnected fracture network. Leveraging the synergistic effects of four fields: a temperature field increases molecular motion and accelerates hydrogen generation kinetics; a pressure field provides the driving force to propel the fluid through the fracture network and ensure full contact with minerals; a chemical field lowers the activation energy of the serpentinization reaction; and a flow field balances the fluid distribution throughout the fracture network. This four-field linkage enhances the in-situ serpentinization reaction of ferrous minerals, continuously producing a gas-liquid mixed hydrogen-rich fluid. The underground hydrogen-rich fluid is extracted to the surface for gas-liquid separation. The crude hydrogen is purified, stored, and utilized externally. The separated liquid phase is recirculated for reactivation, forming a closed-loop circulation system. Simultaneously, real-time monitoring data is continuously compared with the four-field coupled benchmark thresholds to adaptively adjust the system's operating parameters.

[0024] The core principle of this method is to rely on underground natural iron- and hydrogen-rich source rocks as the reaction matrix, and an artificially constructed interconnected fracture network as the reaction and seepage channels. Through four-field coupling technology, the formation reaction environment is artificially controlled to enhance the efficiency of in-situ serpentinization hydrogen generation. This is combined with surface fluid recirculation to achieve cyclical operation, and dynamic parameter adjustment is achieved through data monitoring. This scheme can accurately select high-quality hydrogen generation target areas, ensuring the basic conditions for reaction from the source; the interconnected fracture network significantly expands the contact area between fluids and minerals, improving the utilization rate of the reaction space; the four-field synergistic control completely changes the traditional single-parameter control mode, comprehensively optimizing the reaction environment and significantly improving the hydrogen generation reaction rate and reaction sufficiency; the closed-loop circulation design enables the reuse of liquid phase fluids, significantly reducing the consumption of reagents and water resources; and the adaptive parameter tuning can dynamically adapt to changes in underground formation conditions, effectively avoiding the negative impacts of abnormal conditions. The overall method has advantages such as high hydrogen production efficiency, excellent resource utilization, strong operational continuity, low comprehensive energy consumption, and wide adaptability to operating conditions. It can realize in-situ long-term, stable, and cyclical hydrogen production from hydrogen source rocks, significantly reduce the cost of green hydrogen production, and enhance the value of industrial application.

[0025] In some specific embodiments, the process of delineating hydrogen source rock target areas with adequate ferrous mineral content and fracture development by integrating multi-source geological exploration data, collecting raw data on mineral distribution, fracture development, formation permeability, and primary temperature and pressure stratigraphic properties in the target area, deploying injection and extraction wells with overlapping horizontal projections in the target area, constructing a connected underground fracturing network through directional fracturing, and collecting real-time data on temperature, pressure, fluid physicochemical parameters, seepage flow rate, and hydrogen generation rate includes: Configure a multi-layered progressive logic judgment mechanism. This mechanism adopts a three-layered logic architecture for hierarchical constraints and operating condition judgments, including bottom-level general constraint judgments, middle-level operating condition layered judgments, and top-level specific operating condition judgments. Define the underlying general constraint judgment as the basic judgment rule applicable to the whole domain. The basic judgment rule includes multi-parameter joint judgment, parameter sudden change and gradual change identification, working condition priority interlock, and parameter gradual fine-tuning criterion. The definition of the middle layer working condition stratification is a standardized judgment based on four common core working conditions: hydrogen generation rate decay, mineral surface passivation, flow field seepage blockage, and multi-field parameter mismatch. The upper-level special working condition judgment is defined as a customized judgment for four special edge working conditions: regional production capacity imbalance, parameter safety exceeding limits, fluid composition abnormality, and dual-well injection-production pressure difference imbalance. It controls the top-down hierarchical linkage and step-by-step constraints of the bottom, middle and top layers, fully covering all operating conditions and completing logic recognition and autonomous control triggering.

[0026] It should be understood that during the process of target area exploration, well network deployment, fracture network construction, and real-time acquisition of various parameters, a multi-layered progressive logical judgment mechanism is configured. This mechanism adopts a three-layer logical architecture of bottom, middle, and top layers to achieve full-level constraints and intelligent judgment of operating conditions. The bottom layer is a universal constraint judgment for the entire domain, which sets four basic judgment rules: joint judgment of multiple parameters, identification of parameter mutation and gradual change characteristics, priority interlocking of different operating conditions, and gradual fine-tuning of parameters, serving as universal constraints for all operating conditions. The middle layer is a layered judgment of operating conditions, which specifically conducts standardized logical identification for four types of high-frequency conventional operating conditions in the field: hydrogen generation rate decay, mineral surface passivation, flow field seepage blockage, and multi-field parameter mismatch. The top layer is a special operating condition judgment, which sets customized judgment logic for four special edge operating conditions with low occurrence and wide impact: regional production capacity imbalance, parameter safety exceeding limits, fluid composition abnormality, and pressure difference imbalance between injection and production wells. The entire logic mechanism follows a top-down operating rule, with the bottom, middle and top layers linked and constrained at each level to achieve full coverage identification of all operating conditions of the system, and automatically trigger autonomous control commands after determining that the operating condition is abnormal.

[0027] The operating principle of this technology is based on a layered architecture to decompose different operating condition types, screening step by step from general rules to regular operating conditions, and then to special operating conditions. This avoids the vulnerabilities of single logical judgments. Among them, parameter mutation / gradual change identification is used to distinguish the type of operating condition fluctuation, operating condition priority interlocking is used to avoid control conflicts caused by multiple operating conditions being triggered simultaneously, and gradual fine-tuning criteria are used to prevent drastic parameter changes from impacting the response system. In this embodiment, parameter mutation judgment and multi-parameter joint judgment are set as the underlying mandatory rules, the response delay of the four types of regular operating conditions is controlled within 10 seconds, and the four types of special operating conditions are set with dedicated identification logic.

[0028] This design brings several technical benefits: the three-layer architecture enables comprehensive identification of all operating conditions, completely solving the problems of missed or incorrect identification in traditional technologies; the hierarchical linkage mode simplifies logical operations, improving the speed of operating condition identification and system response efficiency; universal constraint rules unify the overall judgment standard, ensuring consistency in judgment across different blocks and different operating stages; operating condition classification identification can accurately distinguish fault types, providing a basis for subsequent differentiated control; the autonomous trigger control mode reduces manual monitoring and intervention, improving the system's intelligence level, while effectively reducing problems such as decreased hydrogen production efficiency and equipment malfunctions caused by untimely operating condition identification.

[0029] In some specific embodiments, the process of establishing baseline parameter standards based on the original physical property data, constructing a four-field coupled reference parameter system of temperature field, pressure field, chemical field, and flow field, and adjusting the circulating fluid after gas-liquid separation by reagent ratio, acid-base adjustment, high-temperature heating, and high-pressure boosting to achieve the optimal process range, and differentiating the injection flow rate based on the target area fracture development characteristics to prepare a multi-field coupled highly active catalytic fluid, includes: Determine whether the deviation of a single operating parameter from the baseline threshold is less than the preset deviation threshold; When the deviation of a single operating parameter from the baseline threshold is less than the preset deviation threshold, only data is recorded, the real-time control command is discarded, and the existing operating state is maintained. When the deviation of a single operating parameter from the benchmark threshold is greater than or equal to the preset deviation threshold, proceed to the next step of joint verification. Determine whether there are two or more parameters that deviate from the baseline threshold simultaneously within the same field, or whether there are multiple field parameters that deteriorate simultaneously across temperature, pressure, chemical, and flow fields; When two or more parameters within the same field do not deviate synchronously and parameters across different fields do not deteriorate synchronously, the operating condition is considered normal, and the existing parameters are maintained. When two or more parameters within the same field deviate synchronously or when parameters across different fields deteriorate synchronously, it is determined to be an abnormal actual operating condition.

[0030] It should be understood that during the process of establishing a four-field coupled reference parameter system and adjusting the circulating fluid, the deviation of a single operating parameter from the reference threshold is first determined, and a unified deviation threshold is preset (in this embodiment, the deviation threshold is set to ±5% of the reference value). If the deviation of a single parameter is less than this threshold, it is determined to be a normal small fluctuation, and the system only completes data archiving and records, discards real-time control commands, and maintains the current equipment operating state unchanged; if the deviation of a single parameter is greater than or equal to the preset deviation threshold, the joint verification stage is entered. The joint verification is divided into two judgment dimensions: first, judging whether there are two or more parameters simultaneously deviating from the reference threshold within the same temperature field, pressure field, chemical field, and flow field; second, judging whether there is a phenomenon of simultaneous degradation of multiple field parameters across different fields. If there is no simultaneous deviation of multiple parameters within the same field and no parameter degradation across fields, it is determined to be an occasional fluctuation of a single parameter, the overall operating condition is normal, and the existing parameter operation continues; if there is simultaneous deviation of multiple parameters within the same field or simultaneous degradation of parameters across fields, it is determined that the system has an abnormal actual operating condition, and the subsequent control process is initiated.

[0031] The core principle of this process is to grade and eliminate invalid fluctuations, distinguishing between "small fluctuations in a single parameter" and "anomalies in a group of parameters." Small deviations in a single parameter are mostly due to sensor errors or instantaneous environmental interference, requiring no adjustment; however, simultaneous deviations in multiple parameters indicate a substantial change in the field environment, representing a real fault condition. In this embodiment, fluid temperature, injection pressure, pH, and catalyst concentration are assigned to their respective field areas. When a single parameter deviates by 3%, only data is recorded; when both temperature and pressure deviate by 7% simultaneously, it is determined to be an abnormal operating condition.

[0032] The technical solution offers significant advantages: Firstly, it filters out numerous invalid small-scale parameter fluctuations, preventing the system from frequently issuing control commands and reducing mechanical wear and energy consumption caused by repeated equipment adjustments; secondly, the hierarchical verification logic is simple and fast, without increasing the operating load of the control system; thirdly, it accurately distinguishes between accidental fluctuations and actual operating anomalies, significantly reducing the probability of false triggering of controls and ensuring stable operation of the catalytic fluid preparation process; and fourthly, it extends the service life of supporting components such as regulating valves, heating devices, and pressurizing equipment under long-term operation, while ensuring that the activity of the catalytic fluid remains within a stable range, indirectly guaranteeing the continuous and stable underground hydrogen generation reaction.

[0033] In some specific embodiments, the step of establishing baseline parameter standards based on the original physical property data, constructing a four-field coupled reference parameter system of temperature field, pressure field, chemical field, and flow field, adjusting the reagent ratio, acid-base adjustment, high-temperature heating, and high-pressure boosting of the circulating fluid after gas-liquid separation to the optimal process range, and differentially allocating the injection flow rate based on the target area fracture development characteristics to prepare a multi-field coupled highly active catalytic fluid further includes: Determine whether real-time operating parameters change instantaneously beyond a preset abrupt change threshold; When the real-time operating parameters change instantaneously beyond the preset sudden change judgment threshold, it is judged as an equipment abnormality, well leakage or sudden blockage of formation fissures, and the condition type is locked for logical control to be called. If the real-time operating parameters do not change instantaneously beyond the preset sudden change judgment threshold, then proceed to the next step of gradual change verification. Determine whether the decay time of the operating parameters has reached the preset slow change period threshold and whether the parameters have not gradually converged to the reference range; When the decay time of the operating parameters does not reach the preset slow change period threshold or the parameters gradually converge to the reference range, the operating condition is determined to be stable and no parameter tuning is required. When the decay time of the operating parameters reaches the preset slow change period threshold and the parameters do not gradually converge to the benchmark range, it is determined to be a condition of weakened hydrogen generation reaction, passivation of mineral surface or gradual blockage of crack network, and the condition type is locked for logical control and call.

[0034] It should be understood that the first step is to determine whether real-time operating parameters have experienced a sudden change. The preset threshold for sudden change judgment is that the instantaneous change of parameters is ≥10% of the benchmark value. If the instantaneous change of parameters exceeds this threshold, it is directly judged as one of the three types of sudden operating conditions: equipment failure, well leakage, or sudden blockage of formation fissures. The system automatically locks the operating condition type and waits for subsequent logic control unit calls for handling. If the parameters do not experience a sudden change exceeding the threshold, it enters the gradual change state verification. The preset gradual change period threshold in the gradual change verification stage is 24 consecutive hours. It continuously monitors the attenuation trend of operating parameters and judges whether the parameter attenuation time has reached the preset gradual change period and whether the parameter value has gradually converged back to the benchmark range. If the attenuation time does not reach the standard, or the parameters autonomously return to the benchmark range, the operating condition is judged to be in a stable state, and no parameter tuning operation is required. If the attenuation time reaches the gradual change period threshold and the parameters continue to deviate and cannot autonomously recover, it is judged as one of the three types of progressive deterioration conditions: weakening of underground hydrogen generation reaction, passivation of mineral surface, and gradual blockage of fracture network. The operating condition type is simultaneously locked for control calls.

[0035] The principle of this technical approach is to classify operating conditions according to the rate of change. Instantaneous jumps correspond to sudden hard faults, mostly caused by abrupt changes in equipment, wellbore, or fracture structures; slow decay corresponds to gradual deterioration of operating conditions, which are problems that gradually appear in the formation reaction system over long-term operation. The causes and treatment methods of the two are completely different, and classification and identification can achieve precise fault location. In this embodiment, a sudden drop of 12% in wellhead pressure within 1 second is identified as wellbore leakage; a continuous slow decrease in hydrogen generation rate over 26 hours without any upward trend is identified as mineral passivation.

[0036] The technical benefits of this solution include: accurate differentiation between sudden failures and progressively deteriorating chemical conditions, significantly improving fault location accuracy; rapid identification of the type of sudden operating conditions, shortening fault investigation time and reducing safety hazards and production losses caused by leaks and crack sealing; early identification of progressively deteriorating chemical conditions, enabling early warning of faults and preventing small problems from gradually evolving into large-scale operating failures; fully automated monitoring and judgment, eliminating the need for continuous manual monitoring of parameter changes and reducing manual operation and maintenance costs; and targeted identification of operating condition types, providing precise basis for subsequent differentiated control and ensuring long-term stable operation of catalytic fluid preparation and underground hydrogen generation reaction.

[0037] In some specific embodiments, the process of extracting underground hydrogen-rich fluid to the surface for gas-liquid separation, purifying and storing the crude hydrogen, and then recirculating the liquid phase fluid to activate and form a closed-loop cycle, and comparing real-time monitoring data with four-field coupling benchmark thresholds to adaptively adjust operating parameters, includes: The preset operating conditions are prioritized as follows: parameter safety exceeding limits, pressure difference imbalance between injection and production in two wells, abnormal fluid composition, mineral passivation, flow field blockage, hydrogen generation rate decay, multi-field parameter mismatch, and regional production capacity imbalance. Among them, the highest priority condition is the parameter safety limit exceeding the limit, and the next lowest priority conditions are the pressure difference imbalance between injection and production in dual wells, abnormal fluid composition, mineral passivation, flow field blockage, hydrogen generation rate decay, multi-field parameter mismatch, and regional production capacity imbalance. Determine whether the highest priority condition has been triggered. When the highest priority condition judgment is triggered, the control execution logic of all low priority conditions is automatically locked, and multiple control commands are prohibited from taking effect in parallel. If the highest priority operating condition judgment is not triggered at present, the corresponding level of control instruction will be matched according to the real-time operating condition, and the parameter tuning will be executed in an orderly manner.

[0038] It should be understood that the priority of the entire system's operating conditions is first pre-set, from highest to lowest: parameter safety exceeding limits, pressure difference imbalance between injection and production in dual wells, abnormal fluid composition, mineral passivation, flow field blockage, hydrogen generation rate decline, multi-field parameter mismatch, and zoned production capacity imbalance. Among these, parameter safety exceeding limits is the highest priority operating condition, and the priority of the other operating conditions decreases sequentially. During system operation, the system first determines whether the highest priority parameter safety exceeding limit operating condition has been triggered. Once the highest priority operating condition is determined to be triggered, the system immediately and automatically locks the control execution logic corresponding to all lower priority operating conditions, strictly prohibiting multiple control commands from taking effect in parallel to prevent command conflicts. If the highest priority operating condition has not been triggered, the corresponding level of control command is matched according to the actual operating conditions on site, and parameter tuning and operating condition repair operations are executed in an orderly manner according to priority.

[0039] The core principle of this operating logic is safety priority and hierarchical control. Parameter exceeding safety limits directly threatens the safety of equipment, wellbore, and formation; therefore, it assigns the highest handling authority and uses an interlocking mechanism to prevent secondary accidents caused by multiple overlapping commands. Low-priority operating conditions are executed sequentially to ensure orderly and controllable control actions. In this embodiment, when the fluid temperature exceeds the safety threshold (≥120℃), the system directly locks all low-priority control actions such as flow regulation and reagent preparation, prioritizing safety measures.

[0040] The solution offers significant technical advantages: it adheres to the bottom line of safe operation, prioritizing the handling of parameter exceedances to fundamentally prevent safety accidents such as equipment damage, formation disruption, and fluid leakage caused by excessive operating conditions like high temperature and high pressure; the operating condition priority interlocking mechanism completely eliminates the problem of multiple parallel control commands conflicting, avoiding system logic chaos; the orderly execution of control commands ensures a smooth and controllable parameter tuning process, preventing sudden parameter changes; the tiered handling mode simplifies the management difficulty under complex operating conditions and improves system operational reliability; and it reduces fluctuations in hydrogen production efficiency caused by chaotic control logic, ensuring the safe, orderly, and long-term operation of the entire circulating hydrogen production system.

[0041] In some specific embodiments, the process of pumping the prepared highly active catalytic fluid into the underground hydraulic fracturing network, relying on the temperature field to accelerate reaction kinetics, the pressure field to drive fluid seepage contact, the chemical field to reduce the reaction activation energy, and the flow field to balance the fluid distribution in the fracturing network, synergistically enhances the in-situ serpentinization hydrogen generation reaction of ferrous minerals, continuously generating a gas-liquid mixed hydrogen-rich fluid, includes: Independently collect hydrogen generation rate, rock permeability, and fracture network temperature and pressure distribution parameters for each sub-block of the target area; Determine whether the difference in hydrogen production rate between any two sub-blocks exceeds a preset proportional threshold. When the difference in hydrogen production rate between any two sub-blocks does not exceed the preset ratio threshold, the partition capacity is determined to be balanced, and the existing flow field distribution state is maintained. When the difference in hydrogen production rate between any two sub-blocks exceeds the preset ratio threshold, it is determined whether the duration of the rate deviation has reached the preset monitoring cycle threshold and whether the difference in hydrogen production rate has not gradually converged to the baseline interval. When the duration of the rate deviation does not reach the preset monitoring cycle threshold, or when the difference in hydrogen production rate gradually converges to the baseline range, the control will not be implemented for the time being, and the parameter changes will be continuously monitored. When the rate deviation lasts for a period of time that reaches the preset monitoring cycle threshold, and the difference in hydrogen production rate does not gradually converge toward the baseline range, it is determined to be an imbalance in the flow field distribution, triggering segmented flow rate differentiation and fine-tuning of the chemical parameters in the low-production area within the process range.

[0042] It should be understood that during the operation, the hydrogen source rock target area is divided into multiple independent sub-blocks, and parameters such as hydrogen generation rate, rock permeability, and internal temperature and pressure distribution of the fracture network are collected independently for each sub-block. A preset hydrogen generation rate threshold of 20% is used. First, two sub-blocks are randomly selected for comparison to determine if the difference in their hydrogen generation rates exceeds this threshold. If the rate difference does not exceed the threshold, the overall regional production capacity is considered to be in equilibrium, and the current flow field distribution scheme and injection flow rate are maintained unchanged. If the rate difference exceeds the threshold, a duration verification is further initiated, with a preset monitoring period threshold of 12 hours. The duration of the rate deviation is determined to be within the monitoring period, while simultaneously observing whether the hydrogen generation rate difference gradually converges towards the baseline range. If the deviation duration does not meet the standard, or the rate difference recovers on its own, it is determined to be a short-term local fluctuation, and no control action is taken for the time being, while the parameter changes continue to be monitored. If the deviation duration reaches the monitoring cycle, and the rate difference remains large and cannot recover on its own, it is determined to be an imbalance in the flow field distribution, and segmented flow rate differentiation is immediately triggered. At the same time, the fluid chemical parameters of the low-yield block are slightly reduced within the process allowable range to optimize the local reaction environment.

[0043] The principle of this technology is to use the difference in production capacity between blocks to reverse the flow field distribution. Different sub-blocks have natural differences in fracture development and mineral content, and uneven flow field distribution will exacerbate the differentiation in production capacity. By using both production capacity difference and duration as dual judgments, short-term fluctuations can be eliminated, and permanent flow field imbalance problems can be accurately identified. In this embodiment, the difference in hydrogen production rate between blocks A and B reached 22% and did not recover for 14 consecutive hours. Subsequently, the injection flow rate of the low-producing block was increased, and the fluid pH was fine-tuned.

[0044] The technical effects of this solution are: effectively balancing the production capacity of the entire target area, eliminating local inefficient and unproductive areas, and increasing the overall total hydrogen production; dynamically optimizing the flow field distribution to adapt the catalytic fluid to the formation conditions of different blocks, thereby improving fluid utilization; dual threshold determination to avoid blind adjustment due to instantaneous production capacity fluctuations and reduce repeated disturbances to operating conditions; synchronously optimizing chemical parameters for low-yield areas to improve the local reaction environment and further activate the hydrogen production reaction; and narrowing the production capacity gap between blocks under long-term operation, making the entire target area reaction system more balanced and stable, and extending the overall high-efficiency operation cycle.

[0045] In some specific embodiments, the step of establishing baseline parameter standards based on the original physical property data, constructing a four-field coupled reference parameter system of temperature field, pressure field, chemical field, and flow field, adjusting the reagent ratio, acid-base adjustment, high-temperature heating, and high-pressure boosting of the circulating fluid after gas-liquid separation to the optimal process range, and differentially allocating the injection flow rate based on the target area fracture development characteristics to prepare a multi-field coupled highly active catalytic fluid further includes: Preset process boundary thresholds corresponding to temperature, injection pressure, fluid pH, and catalyst concentration; Determine whether the real-time operating parameters exceed the corresponding preset process boundary threshold; When the real-time operating parameters do not exceed the preset process boundary threshold, the parameter operation is deemed compliant, and normal control and fluid injection operations are maintained. When the real-time operating parameters exceed the preset process boundary threshold, the safety self-locking judgment logic is immediately triggered, and the parameter adjustment and fluid injection execution actions are automatically suspended. The system synchronously locks the user's permission to modify parameters until the operating parameters return to the baseline compliance range. The self-locking constraint is then automatically released and normal operation resumes.

[0046] It should be understood that corresponding process boundary thresholds are pre-set for each parameter, with the temperature process boundary being 40℃~110℃, the injection pressure boundary being 2MPa~6MPa, the pH value boundary being 8~12, and the catalyst concentration boundary being 0.5%~2%. The operating parameters are compared with their corresponding process boundary thresholds in real time. If all real-time parameters do not exceed the preset boundary range, the parameters are deemed to be operating compliantly, and the system maintains normal parameter adjustment and fluid injection operations. Once any real-time operating parameter exceeds its corresponding process boundary threshold, the system immediately triggers a safety self-locking logic, automatically suspending all parameter adjustment actions and fluid injection execution actions; simultaneously, it locks on-site manual parameter modification permissions, prohibiting forced manual parameter adjustments, until all operating parameters gradually return to the baseline compliant range, at which point the system automatically releases the self-locking constraint and restores normal operating conditions and workflow.

[0047] The principle behind this solution is to set rigid process safety boundaries. Exceeding the thresholds for four key parameters will damage the activity of the catalytic fluid, harm the underground formation structure, and corrode well equipment. Therefore, a dual self-locking mechanism combining hardware and software is employed to forcibly terminate unauthorized operations and prevent human error. In this embodiment, when the injection pressure rises to 6.3 MPa, exceeding the upper limit threshold, the system immediately stops pressurization and fluid pumping, and simultaneously locks the manual control panel. It automatically unlocks when the pressure drops back to 5.8 MPa.

[0048] The advantages of this technology include: a rigid process boundary that strengthens the safety defenses throughout the entire process, eliminating problems such as catalytic fluid failure, formation fracture collapse, and wellbore corrosion caused by parameter exceeding limits; a fast automatic self-locking function that can terminate dangerous operations instantly when parameters exceed limits, reducing the probability of accidents; locking manual access to prevent on-site personnel from operating illegally or forcibly with faulty equipment, thus standardizing operating procedures; automatic unlocking and resumption of operation after parameter return, achieving unmanned safety management; and ensuring that the catalytic fluid is always in the optimal activity range, preventing interruptions in hydrogen generation reactions due to parameter anomalies, and maintaining process continuity and stability.

[0049] In some specific embodiments, the step of establishing baseline parameter standards based on the original physical property data, constructing a four-field coupled reference parameter system of temperature field, pressure field, chemical field, and flow field, adjusting the reagent ratio, acid-base adjustment, high-temperature heating, and high-pressure boosting of the circulating fluid after gas-liquid separation to the optimal process range, and differentially allocating the injection flow rate based on the target area fracture development characteristics to prepare a multi-field coupled highly active catalytic fluid further includes: Simultaneously collect three types of indicators in the circulating fluid: ferrous dissolution concentration, carbonate impurity content, and fluid pH fluctuation range. Determine whether the decrease in ferrous leaching reaches the preset concentration warning threshold, whether the carbonate impurity content exceeds the preset impurity threshold, or whether the pH fluctuation exceeds the preset fluctuation threshold. When none of the three indicators trigger the corresponding preset threshold, the chemical field steady state is determined to be normal, and the existing reagent ratio and fluid circulation state are maintained. When any preset threshold condition is triggered, it is determined that the chemical field is out of balance and the mineral reactivity is reduced, triggering the automatic replenishment of alkaline agents to stabilize the acid-base environment; Further determine whether the circulating fluid level and the remaining amount of catalyst are below their respective preset reserve thresholds; When the fluid level or remaining drug quantity is lower than the preset reserve threshold, the fluid and drug replenishment operation will be completed automatically.

[0050] It should be understood that during the circulating fluid preparation process, three core indicators are collected simultaneously: the concentration of ferrous dissolution in the circulating fluid, the content of carbonate impurities, and the fluctuation range of fluid pH. Corresponding warning thresholds are set for each: the warning threshold for the decrease in ferrous dissolution is 30%, the threshold for carbonate impurity content is 800 mg / L, and the threshold for pH fluctuation range is ±1.0 pH. The status of each of the three indicators is judged one by one. If the decrease in ferrous dissolution, impurity content, and pH fluctuation do not trigger the corresponding thresholds, the chemical field is determined to be in a steady-state normal state, and the existing reagent ratio and fluid circulation mode are maintained unchanged. If any of the three indicators triggers the preset threshold, the chemical field is determined to be out of balance, the reactivity of the hydrogen source rock minerals is reduced, and the system automatically replenishes alkaline reagents to quickly stabilize the fluid pH environment and restore the chemical field status. After completing the acid-base adjustment, the total liquid level of the circulating fluid and the remaining amount of catalyst are further monitored. Liquid level reserve thresholds and catalyst balance thresholds are set respectively. When the fluid level or catalyst balance is lower than the corresponding reserve threshold, the system automatically starts the liquid replenishment and catalyst replenishment device to complete the material replenishment operation.

[0051] The operating principle is to inversely judge the mineral reaction state and chemical field stability by observing changes in fluid composition. A decrease in ferrous leaching indicates reduced mineral reactivity; carbonate impurities can interfere with the catalytic reaction; large fluctuations in acidity and alkalinity can disrupt the reaction environment; and replenishing alkaline reagents can restore a stable chemical field. Automated liquid and reagent replenishment ensures a continuous supply of materials. In this embodiment, a 32% decrease in ferrous leaching triggers an alarm, and the system automatically adds alkaline reagents; when the fluid level is below 20% of the total volume, clean water is automatically added.

[0052] The technical benefits of this solution include: real-time monitoring of core chemical field indicators, early prediction of mineral activity decay, timely repair of the reaction environment, and slowing down the failure rate of hydrogen source rock minerals; automatic replenishment of alkaline reagents to maintain optimal acid-base conditions for the fluid, ensuring continuous and efficient catalytic reaction; automated liquid and reagent replenishment functions to achieve unmanned material replenishment, significantly reducing the frequency of manual feeding and water addition, and lowering maintenance workload; effective control of fluid impurity content to prevent impurity accumulation and blockage of crack networks and pipelines; and long-term maintenance of a stable chemical field to ensure high activity of the catalytic fluid, guaranteeing the long-term and stable operation of in-situ hydrogen generation reaction from a chemical perspective, and reducing reagent and fluid consumption costs.

[0053] In some specific embodiments, when the prepared highly active catalytic fluid is pumped into the underground hydraulic fracturing network, relying on the temperature field to accelerate reaction kinetics, the pressure field to drive fluid seepage contact, the chemical field to reduce the reaction activation energy, and the flow field to balance the fluid distribution in the fracturing network, the four fields synergistically enhance the in-situ serpentinization hydrogen generation reaction of ferrous minerals, continuously generating a gas-liquid mixed hydrogen-rich fluid, the process further includes: Collect parameters such as injection wellhead pressure, extraction well production pressure, inter-well pressure difference, and fluid extraction flow rate. Determine whether the inter-well pressure difference exceeds the preset pressure difference threshold; When the pressure difference between wells does not exceed the preset pressure difference threshold, the injection and production pressure fields are determined to be in balance, and the existing injection and production conditions are maintained. When the inter-well pressure difference exceeds the preset pressure difference threshold, it is determined whether the decrease in fluid extraction flow rate reaches the preset flow rate attenuation threshold. When the inter-well pressure difference exceeds the limit but the flow rate decrease does not reach the preset flow rate attenuation threshold, it is determined to be an instantaneous pressure fluctuation, and continuous monitoring is performed without implementing control measures. When the inter-well pressure difference exceeds the limit and the flow rate decrease reaches the preset flow rate attenuation threshold, it is determined that the fracture network seepage channel is deviated or the local fracture is closed, triggering the linkage logic of reconstructing the formation pressure gradient and appropriately increasing the temperature to reduce the fluid viscosity, and working together to clear the seepage channel and restore the injection-production balance. Simultaneously collect data on changes in hydrogen generation rate, ferrous dissolution amount, and fluctuations in fluid physicochemical parameters; Determine whether the decrease in hydrogen generation rate reaches the preset rate decay threshold, whether the decrease in ferrous leaching reaches the preset leaching warning threshold, and whether the fluctuation of fluid physicochemical parameters does not exceed the allowable fluctuation range; If both threshold trigger conditions are not met simultaneously, it is determined that there is no passivation on the mineral surface, and the normal circulating hydrogen generation condition is maintained. When two threshold triggering conditions are met simultaneously, the mineral surface is determined to be passivated, and an acidic solution of a limited concentration is automatically pumped in to perform etching and passivation removal treatment. After etching is completed, determine the degree of recovery of hydrogen generation rate and whether the ferrous dissolution stability reaches the preset working condition stability judgment threshold. If the preset stability threshold is not reached, the monitoring period will be extended and observation will continue. When the preset stable operating condition threshold is reached, instantaneous parameter jumps and resets are prohibited, and a phased step-by-phase parameter callback is executed to gradually return to the standard hydrogen production operating condition.

[0054] It should be understood that, firstly, the wellhead pressure of the injection well, the produced pressure of the extraction well, the pressure difference between wells, and the fluid extraction flow rate are collected. The preset threshold for the pressure difference between wells is 1.0 MPa. First, it is determined whether the pressure difference between wells exceeds the threshold. If the pressure difference does not exceed the limit, it is determined that the injection and production pressure fields are in balance, and the existing injection and production conditions are maintained. If the pressure difference exceeds the threshold, it is further determined whether the decrease in the fluid extraction flow rate reaches the preset flow rate attenuation threshold (25%). If the pressure difference exceeds the limit but the flow rate attenuation does not meet the standard, it is determined to be an instantaneous pressure fluctuation, and only continuous monitoring is performed without any control measures. If the pressure difference exceeds the limit and the flow rate decreases significantly at the same time, it is determined that the fracture network seepage channels are deviated or local fractures are closed. The system then performs two operations in a coordinated manner: reconstructing the formation pressure gradient and appropriately increasing the fluid temperature to reduce viscosity, thereby facilitating the unblocking of seepage channels and restoring the injection and production balance. After pressure regulation is completed, the hydrogen generation rate, ferrous dissolution, and fluid physicochemical parameters are collected simultaneously. A preset threshold of 20% for hydrogen generation rate decay and 25% for ferrous dissolution reduction are established. When both the hydrogen generation rate and ferrous dissolution reduction reach their respective thresholds, and there are no abnormal fluctuations in fluid parameters, a passivation layer is determined to have formed on the mineral surface. The system automatically pumps in a limited concentration of acidic solution to etch the mineral surface and remove the passivation layer. After etching, the hydrogen generation rate and ferrous dissolution stability are continuously monitored. The preset stability threshold is when the parameters recover to more than 90% of the baseline value. If this threshold is not met, the monitoring time is extended. If the stability threshold is reached, the system prohibits instantaneous parameter reset and adopts a phased, stepped callback mode, gradually adjusting the parameters back to the standard hydrogen generation condition over 3-5 cycles.

[0055] The principle of this technology is as follows: The inter-well pressure differential and flow rate are linked to determine the state of the seepage channels; heating and viscosity reduction utilize the physical properties of fluids to unclog blocked channels; acidic solution etching can remove passivating substances from the mineral surface, restoring the mineral's reactivity; and step-by-step parameter adjustment avoids sudden parameter changes that could impact the formation and reaction system. In this embodiment, the inter-well pressure differential is 1.2 MPa, the flow rate decreases by 28%, the system temperature is increased by 5°C, and the pressure gradient is adjusted to unclog the channels; after mineral passivation is completed, the temperature and pressure parameters are gradually adjusted back in four cycles.

[0056] The technical benefits of this solution include: accurately identifying and quickly clearing underground seepage blockages, restoring injection-production balance, and ensuring smooth fluid circulation; efficiently resolving mineral surface passivation issues, reactivating mineral reactivity, and significantly extending the effective service life of hydrogen source rocks; a stepped parameter callback mode to avoid drastic fluctuations in operating conditions, protecting the stability of underground strata and the reaction system; multi-parameter linkage monitoring to comprehensively understand the reaction status, and thorough fault handling; and automated completion of the entire control process with fast response speed, which can promptly curb the decline in hydrogen production efficiency, ensuring the system is always in a state of high-efficiency hydrogen production, while reducing the risk of damage to strata and pipelines caused by sudden changes in operating conditions.

[0057] A second embodiment of the present application provides an in-situ catalytic recycling hydrogen generation system based on multi-field coupling control of hydrogen source rocks, comprising: The acquisition module is configured to integrate multi-source geological exploration data to delineate hydrogen source rock target areas with adequate ferrous mineral content and fracture development. It collects raw data on mineral distribution, fracture development, formation permeability, and primary temperature and pressure formation properties in the target area. It deploys injection wells and extraction wells with horizontally overlapping projections in the target area, constructs a connected underground fracturing network through directional fracturing, and collects data on temperature, pressure, fluid physicochemical parameters, seepage flow rate, and hydrogen generation rate in real time. The preparation module is configured to establish baseline parameter standards based on the original physical property data, construct a four-field coupled reference parameter system of temperature field, pressure field, chemical field and flow field, and adjust the reagent ratio, acid and base adjustment, high temperature heating and high pressure boosting of the circulating fluid after gas-liquid separation to the optimal process range, and differentiate the injection flow rate based on the target area fracture development characteristics to prepare a multi-field coupled high-activity catalytic fluid. The reaction module is configured to pump the prepared highly active catalytic fluid into the underground fracturing network. It relies on the temperature field to accelerate the reaction kinetics, the pressure field to drive the fluid seepage contact, the chemical field to reduce the reaction activation energy, and the flow field to balance the fluid distribution in the network. The four fields work together to enhance the in-situ serpentinization hydrogen generation reaction of ferrous minerals and continuously generate gas-liquid mixed hydrogen-rich fluid. The control module is configured to extract underground hydrogen-rich fluid to the surface to complete gas-liquid separation, purify crude hydrogen for storage and utilization, recirculate liquid fluid to activate and form a closed-loop cycle, and compare real-time monitoring data with four-field coupling benchmark thresholds to adaptively adjust operating parameters.

[0058] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program goods. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program goods 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.

[0059] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program goods according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and 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.

[0060] 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.

[0061] 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.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for in-situ catalytic cyclic hydrogen generation from hydrogen source rocks based on multi-field coupling regulation, characterized in that, Includes the following steps: By integrating multi-source geological exploration data, hydrogen source rock target areas with adequate ferrous mineral content and fracture development were delineated. Raw data on mineral distribution, fracture development, formation permeability, and primary temperature and pressure properties of the formation were collected. Injection wells and extraction wells with horizontal parallel projection overlap were deployed in the target area. A connected underground fracturing network was constructed through directional fracturing, and data on temperature, pressure, fluid physicochemical parameters, seepage flow rate, and hydrogen generation rate were collected in real time. Based on the original physical property data, a baseline parameter standard is established, and a four-field coupled benchmark parameter system of temperature field, pressure field, chemical field and flow field is constructed. The circulating fluid after gas-liquid separation is adjusted by reagent ratio, acid-base adjustment, high temperature heating and high pressure boosting to be adjusted to the optimal process range. The injection flow rate is differentiated according to the target area fracture development characteristics to prepare a multi-field coupled high-activity catalytic fluid. The prepared highly active catalytic fluid is pumped into the underground fracturing network. The temperature field accelerates the reaction kinetics, the pressure field drives the fluid seepage contact, the chemical field reduces the reaction activation energy, and the flow field balances the fluid distribution in the network. The four fields work together to enhance the in-situ serpentine hydrogen generation reaction of ferrous minerals, and continuously generate gas-liquid mixed hydrogen-rich fluid. The underground hydrogen-rich fluid is extracted to the surface for gas-liquid separation. The crude hydrogen is purified and stored for use. The liquid phase fluid is refluxed and activated to form a closed loop. The operating parameters are adaptively tuned by comparing real-time monitoring data with the four-field coupling benchmark threshold.

2. The in-situ catalytic recycling method for hydrogen generation from hydrogen source rocks based on multi-field coupling control as described in claim 1, characterized in that, The process involves integrating multi-source geological exploration data to delineate hydrogen source rock target areas with adequate ferrous mineral content and fracture development. Raw data on mineral distribution, fracture development, formation permeability, and primary temperature and pressure properties of the formation are collected. Injection and extraction wells with overlapping horizontal projections are deployed within the target area. A connected underground fracturing network is constructed through directional fracturing. Real-time data collection of temperature, pressure, fluid physicochemical parameters, seepage flow rate, and hydrogen generation rate includes: Configure a multi-layered progressive logic judgment mechanism. This mechanism adopts a three-layered logic architecture for hierarchical constraints and operating condition judgments, including bottom-level general constraint judgments, middle-level operating condition layered judgments, and top-level specific operating condition judgments. Define the underlying general constraint judgment as the basic judgment rule applicable to the whole domain. The basic judgment rule includes multi-parameter joint judgment, parameter sudden change and gradual change identification, working condition priority interlock, and parameter gradual fine-tuning criterion. The definition of the middle layer working condition stratification is a standardized judgment based on four common core working conditions: hydrogen generation rate decay, mineral surface passivation, flow field seepage blockage, and multi-field parameter mismatch. The upper-level special working condition judgment is defined as a customized judgment for four special edge working conditions: regional production capacity imbalance, parameter safety exceeding limits, fluid composition abnormality, and dual-well injection-production pressure difference imbalance. It controls the top-down hierarchical linkage and step-by-step constraints of the bottom, middle and top layers, fully covering all operating conditions and completing logic recognition and autonomous control triggering.

3. The in-situ catalytic recycling method for hydrogen source rock based on multi-field coupling control according to claim 2, characterized in that, The process of establishing baseline parameter standards based on the original physical property data, constructing a four-field coupled benchmark parameter system of temperature field, pressure field, chemical field, and flow field, and adjusting the reagent ratio, acid-base adjustment, high-temperature heating, and high-pressure boosting of the circulating fluid after gas-liquid separation to achieve the optimal process range, and differentiating the injection flow rate based on the target area fracture development characteristics to prepare a multi-field coupled highly active catalytic fluid includes: Determine whether the deviation of a single operating parameter from the baseline threshold is less than the preset deviation threshold; When the deviation of a single operating parameter from the baseline threshold is less than the preset deviation threshold, only data is recorded, the real-time control command is discarded, and the existing operating state is maintained. When the deviation of a single operating parameter from the benchmark threshold is greater than or equal to the preset deviation threshold, proceed to the next step of joint verification. Determine whether there are two or more parameters that deviate from the baseline threshold simultaneously within the same field, or whether there are multiple field parameters that deteriorate simultaneously across temperature, pressure, chemical, and flow fields; When two or more parameters within the same field do not deviate synchronously and parameters across different fields do not deteriorate synchronously, the operating condition is considered normal, and the existing parameters are maintained. When two or more parameters within the same field deviate synchronously or when parameters across different fields deteriorate synchronously, it is determined to be an abnormal actual operating condition.

4. The in-situ catalytic recycling method for hydrogen generation from hydrogen source rocks based on multi-field coupling control according to claim 3, characterized in that, The process of establishing baseline parameter standards based on the original physical property data, constructing a four-field coupled benchmark parameter system of temperature field, pressure field, chemical field, and flow field, and adjusting the circulating fluid after gas-liquid separation by reagent ratio, acid-base adjustment, high-temperature heating, and high-pressure boosting to achieve the optimal process range, and differentiating the injection flow rate based on the target area fracture development characteristics to prepare a multi-field coupled highly active catalytic fluid, further includes: Determine whether real-time operating parameters change instantaneously beyond a preset threshold for sudden change detection; When the real-time operating parameters change instantaneously beyond the preset sudden change judgment threshold, it is judged as an equipment abnormality, well leakage or sudden blockage of formation fissures, and the condition type is locked for logical control to be called. If the real-time operating parameters do not change instantaneously beyond the preset sudden change judgment threshold, then proceed to the next step of gradual change verification. Determine whether the decay time of the operating parameters has reached the preset slow change period threshold and whether the parameters have not gradually converged to the reference range; When the decay time of the operating parameters does not reach the preset slow change period threshold or the parameters gradually converge to the reference range, the operating condition is determined to be stable and no parameter tuning is required. When the decay time of the operating parameters reaches the preset slow change period threshold and the parameters do not gradually converge to the benchmark range, it is determined to be a condition of weakened hydrogen generation reaction, passivation of mineral surface or gradual blockage of crack network, and the condition type is locked for logical control and call.

5. The in-situ catalytic recycling method for hydrogen generation from hydrogen source rocks based on multi-field coupling control according to claim 4, characterized in that, The process of extracting underground hydrogen-rich fluid to the surface for gas-liquid separation, purifying and storing the crude hydrogen, and then recirculating and activating the liquid phase fluid to form a closed-loop cycle, along with comparing real-time monitoring data with four-field coupling benchmark thresholds to adaptively adjust operating parameters, includes: The preset operating conditions are prioritized as follows: parameter safety exceeding limits, pressure difference imbalance between injection and production in two wells, abnormal fluid composition, mineral passivation, flow field blockage, hydrogen generation rate decay, multi-field parameter mismatch, and regional production capacity imbalance. Among them, the highest priority condition is the parameter safety limit exceeding the limit, and the next lowest priority conditions are the pressure difference imbalance between injection and production in dual wells, abnormal fluid composition, mineral passivation, flow field blockage, hydrogen generation rate decay, multi-field parameter mismatch, and regional production capacity imbalance. Determine whether the highest priority condition has been triggered. When the highest priority condition judgment is triggered, the control execution logic of all low priority conditions is automatically locked, and multiple control commands are prohibited from taking effect in parallel. If the highest priority operating condition judgment is not triggered at present, the corresponding level of control instruction will be matched according to the real-time operating condition, and the parameter tuning will be executed in an orderly manner.

6. The in-situ catalytic recycling method for hydrogen source rock based on multi-field coupling control according to claim 5, characterized in that, The process of pumping the prepared highly active catalytic fluid into an underground hydraulic fracturing network, relying on the temperature field to accelerate reaction kinetics, the pressure field to drive fluid seepage contact, the chemical field to reduce the reaction activation energy, and the flow field to balance the fluid distribution in the fracturing network, synergistically enhances the in-situ serpentinization hydrogen generation reaction of ferrous minerals, continuously generating a gas-liquid mixed hydrogen-rich fluid, includes: Independently collect hydrogen generation rate, rock permeability, and fracture network temperature and pressure distribution parameters for each sub-block of the target area; Determine whether the difference in hydrogen production rate between any two sub-blocks exceeds a preset proportional threshold. When the difference in hydrogen production rate between any two sub-blocks does not exceed the preset ratio threshold, the partition capacity is determined to be balanced, and the existing flow field distribution state is maintained. When the difference in hydrogen production rate between any two sub-blocks exceeds the preset ratio threshold, it is determined whether the duration of the rate deviation has reached the preset monitoring cycle threshold and whether the difference in hydrogen production rate has not gradually converged to the baseline interval. When the duration of the rate deviation does not reach the preset monitoring cycle threshold, or when the difference in hydrogen production rate gradually converges to the reference range, the control will not be implemented for the time being, and the parameter changes will be continuously monitored. When the rate deviation lasts for a period of time that reaches the preset monitoring cycle threshold, and the difference in hydrogen production rate does not gradually converge toward the baseline range, it is determined to be an imbalance in the flow field distribution, triggering segmented flow rate differentiation and fine-tuning of the chemical parameters in the low-production area within the process range.

7. The in-situ catalytic recycling method for hydrogen generation from hydrogen source rocks based on multi-field coupling control according to claim 6, characterized in that, The process of establishing baseline parameter standards based on the original physical property data, constructing a four-field coupled benchmark parameter system of temperature field, pressure field, chemical field, and flow field, and adjusting the circulating fluid after gas-liquid separation by reagent ratio, acid-base adjustment, high-temperature heating, and high-pressure boosting to achieve the optimal process range, and differentiating the injection flow rate based on the target area fracture development characteristics to prepare a multi-field coupled highly active catalytic fluid, further includes: Preset process boundary thresholds corresponding to temperature, injection pressure, fluid pH, and catalyst concentration; Determine whether the real-time operating parameters exceed the corresponding preset process boundary threshold; When the real-time operating parameters do not exceed the preset process boundary threshold, the parameter operation is deemed compliant, and normal control and fluid injection operations are maintained. When the real-time operating parameters exceed the preset process boundary threshold, the safety self-locking judgment logic is immediately triggered, and the parameter adjustment and fluid injection execution actions are automatically suspended. The system synchronously locks the user's permission to modify parameters until the operating parameters return to the baseline compliance range. The self-locking constraint is then automatically released and normal operation resumes.

8. The in-situ catalytic recycling method for hydrogen generation from hydrogen source rocks based on multi-field coupling control according to claim 7, characterized in that, The process of establishing baseline parameter standards based on the original physical property data, constructing a four-field coupled benchmark parameter system of temperature field, pressure field, chemical field, and flow field, and adjusting the circulating fluid after gas-liquid separation by reagent ratio, acid-base adjustment, high-temperature heating, and high-pressure boosting to achieve the optimal process range, and differentiating the injection flow rate based on the target area fracture development characteristics to prepare a multi-field coupled highly active catalytic fluid, further includes: Simultaneously collect three types of indicators in the circulating fluid: ferrous dissolution concentration, carbonate impurity content, and fluid pH fluctuation range. Determine whether the decrease in ferrous leaching reaches the preset concentration warning threshold, whether the carbonate impurity content exceeds the preset impurity threshold, or whether the pH fluctuation exceeds the preset fluctuation threshold. When none of the three indicators trigger the corresponding preset threshold, the chemical field steady state is determined to be normal, and the existing reagent ratio and fluid circulation state are maintained. When any preset threshold condition is triggered, it is determined that the chemical field is out of balance and the mineral reactivity is reduced, triggering the automatic replenishment of alkaline agents to stabilize the acid-base environment; Further determine whether the circulating fluid level and the remaining amount of catalyst are below their respective preset reserve thresholds; When the fluid level or remaining drug quantity is lower than the preset reserve threshold, the fluid and drug replenishment operation will be completed automatically.

9. The in-situ catalytic recycling method for hydrogen generation from hydrogen source rocks based on multi-field coupling control according to claim 8, characterized in that, The process of pumping the prepared highly active catalytic fluid into the underground hydraulic fracturing network, relying on the temperature field to accelerate reaction kinetics, the pressure field to drive fluid seepage contact, the chemical field to reduce reaction activation energy, and the flow field to balance the fluid distribution in the fracturing network, synergistically enhances the in-situ serpentinization hydrogen generation reaction of ferrous minerals, continuously generating a gas-liquid mixed hydrogen-rich fluid, further includes: Collect parameters such as injection wellhead pressure, extraction well production pressure, inter-well pressure difference, and fluid extraction flow rate. Determine whether the inter-well pressure difference exceeds the preset pressure difference threshold; When the pressure difference between wells does not exceed the preset pressure difference threshold, the injection and production pressure fields are determined to be in balance, and the existing injection and production conditions are maintained. When the inter-well pressure difference exceeds the preset pressure difference threshold, it is determined whether the decrease in fluid extraction flow rate reaches the preset flow rate attenuation threshold. When the inter-well pressure difference exceeds the limit but the flow rate decrease does not reach the preset flow rate attenuation threshold, it is determined to be an instantaneous pressure fluctuation, and continuous monitoring is performed without implementing control measures. When the inter-well pressure difference exceeds the limit and the flow rate decrease reaches the preset flow rate attenuation threshold, it is determined that the fracture network seepage channel is deviated or the local fracture is closed, triggering the linkage logic of reconstructing the formation pressure gradient and appropriately increasing the temperature to reduce the fluid viscosity, and working together to clear the seepage channel and restore the injection-production balance. Simultaneously collect data on changes in hydrogen generation rate, ferrous dissolution amount, and fluctuations in fluid physicochemical parameters; Determine whether the decrease in hydrogen generation rate reaches the preset rate decay threshold, whether the decrease in ferrous leaching reaches the preset leaching warning threshold, and whether the fluctuation of fluid physicochemical parameters does not exceed the allowable fluctuation range; If both threshold trigger conditions are not met simultaneously, it is determined that there is no passivation on the mineral surface, and the normal circulating hydrogen generation condition is maintained. When two threshold triggering conditions are met simultaneously, the mineral surface is determined to be passivated, and an acidic solution of a limited concentration is automatically pumped in to perform etching and passivation removal treatment. After etching is completed, determine the degree of recovery of hydrogen generation rate and whether the ferrous dissolution stability reaches the preset working condition stability judgment threshold. If the preset stability threshold is not reached, the monitoring period will be extended and observation will continue. When the preset stable operating condition threshold is reached, instantaneous parameter jumps and resets are prohibited, and a phased step-by-phase parameter callback is executed to gradually return to the standard hydrogen production operating condition.

10. A hydrogen source rock in-situ catalytic recycling hydrogen generation system based on multi-field coupling regulation, characterized in that, The method for in-situ catalytic cyclic hydrogen generation from hydrogen source rocks based on multi-field coupling regulation, as described in any one of claims 1 to 9, comprises: The acquisition module is configured to integrate multi-source geological exploration data to delineate hydrogen source rock target areas with adequate ferrous mineral content and fracture development. It collects raw data on mineral distribution, fracture development, formation permeability, and primary temperature and pressure formation properties in the target area. It deploys injection wells and extraction wells with horizontally overlapping projections in the target area, constructs a connected underground fracturing network through directional fracturing, and collects data on temperature, pressure, fluid physicochemical parameters, seepage flow rate, and hydrogen generation rate in real time. The preparation module is configured to establish baseline parameter standards based on the original physical property data, construct a four-field coupled reference parameter system of temperature field, pressure field, chemical field and flow field, and adjust the reagent ratio, acid and base adjustment, high temperature heating and high pressure boosting of the circulating fluid after gas-liquid separation to the optimal process range, and differentiate the injection flow rate based on the target area fracture development characteristics to prepare a multi-field coupled high-activity catalytic fluid. The reaction module is configured to pump the prepared highly active catalytic fluid into the underground fracturing network. It relies on the temperature field to accelerate the reaction kinetics, the pressure field to drive the fluid seepage contact, the chemical field to reduce the reaction activation energy, and the flow field to balance the fluid distribution in the network. The four fields work together to enhance the in-situ serpentinization hydrogen generation reaction of ferrous minerals and continuously generate gas-liquid mixed hydrogen-rich fluid. The control module is configured to extract underground hydrogen-rich fluid to the surface to complete gas-liquid separation, purify crude hydrogen for storage and utilization, recirculate liquid fluid to activate and form a closed-loop cycle, and compare real-time monitoring data with four-field coupling benchmark thresholds to adaptively adjust operating parameters.

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