Method and apparatus for analyzing a natural hydrogen reservoir sweet spot

Abstract

The present application relates to the technical field of seismic exploration, and particularly relates to a method and device for analyzing a favorable area of a natural hydrogen reservoir. The method comprises determining a surface H2 overflow coefficient of each natural hydrogen reservoir candidate zone, a hydrogen source coefficient of the target natural hydrogen reservoir candidate zone, and a gas reservoir sealing coefficient of the target natural hydrogen reservoir candidate zone according to seismic data, well logging data, and test analysis data of a target analysis area; and determining a favorable area of the target natural hydrogen reservoir candidate zone according to the surface H2 overflow coefficient, the hydrogen source coefficient, and the gas reservoir sealing coefficient of the target natural hydrogen reservoir candidate zone. The present application quantitatively evaluates each natural hydrogen reservoir candidate zone from the surface overflow hydrogen content, the underground hydrogen generation capacity, and the trapping and storage capacity based on the natural hydrogen reservoir accumulation elements, thereby improving the accuracy and effectiveness of the natural hydrogen reservoir exploration potential evaluation.

Description

Technical Field

[0001] This invention relates to the field of seismic exploration technology, and in particular to an analytical method and apparatus for a favorable area of ​​natural hydrogen reservoirs. Background Technology

[0002] Hydrogen is a colorless, odorless, highly flammable, and sparingly soluble gas at room temperature and pressure. It is a widely available, clean, low-carbon, safe, and efficient fuel, holding a significant strategic position in clean energy alternatives. Natural hydrogen, also known as "golden hydrogen" or "white hydrogen," is generated during underground geological processes and is currently the most economical way to obtain hydrogen gas on a large scale worldwide. However, natural hydrogen is not currently considered a potential energy mineral, and no related research or exploration has been conducted. Conducting a comprehensive survey of natural hydrogen to ascertain its resource potential and development prospects is urgently needed.

[0003] In natural hydrogen exploration, there are two main methods for identifying favorable zones: The first is surface detection, where underground hydrogen escapes to the surface, forming geological formations like "fairy rings." Natural hydrogen concentration is detected using surface and shallow subsurface detection equipment to determine underground hydrogen richness. While this method quickly and easily determines the approximate extent of hydrogen-bearing areas, the complex underground geological conditions mean the specific location of natural hydrogen reservoir traps remains unclear. The second method qualitatively identifies favorable zones based on key geological conditions of natural hydrogen accumulation. This involves identifying areas with well-developed Fe-rich basic and ultrabasic rock masses, deep fault zones, or large faults in rift basins. While this method accurately delineates the area of ​​favorable zones, it cannot quantitatively evaluate the location of natural hydrogen reservoir traps.

[0004] To avoid the blind pursuit of natural hydrogen exploration, after determining that an exploration area possesses the potential for natural hydrogen reservoirs, the natural hydrogen reservoir zones within that area are typically evaluated and optimized to identify favorable zones. However, there is currently no systematic method for quantitatively evaluating favorable zones for natural hydrogen reservoirs.

[0005] Therefore, developing a technical method that can quantitatively evaluate the favorable zones of natural hydrogen reservoirs is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides an analytical method and apparatus for favorable areas of natural hydrogen reservoirs. It primarily quantifies and evaluates favorable zones within natural hydrogen reservoirs, resolving the issue of selecting the optimal favorable zones. This provides a reliable basis for zone selection and target deployment in subsequent exploration and development of natural hydrogen reservoirs. The invention offers the following technical solution:

[0007] In a first aspect of the invention, an analytical method for a favorable area of ​​a natural hydrogen reservoir is provided, the method comprising:

[0008] Based on the seismic data, well logging data and laboratory analysis data of the target analysis area, determine the number of candidate zones for natural hydrogen reservoirs in the target analysis area, the surface H2 spillover coefficient of each candidate zone, the total area of ​​each candidate zone, the area of ​​the iron-rich rock mass distribution area, the iron content, the thickness of the formation water distribution and the thickness of the overlying layer.

[0009] Based on the total area of ​​the candidate zone for the target natural hydrogen reservoir, the area of ​​the iron-rich rock mass distribution area, the iron content, and the thickness of the formation water distribution, the hydrogen source coefficient of the candidate zone for the target natural hydrogen reservoir is determined.

[0010] Based on the thickness of the overlying layer of the candidate zone for the target natural hydrogen reservoir, the gas capping coefficient of the candidate zone for the target natural hydrogen reservoir is determined.

[0011] Based on the surface H2 spillover coefficient, hydrogen source coefficient, and gas reservoir capping coefficient of the candidate natural hydrogen reservoir zone, the favorable areas for natural hydrogen reservoirs in the candidate natural hydrogen reservoir zone are determined.

[0012] Furthermore, the number of candidate natural hydrogen reservoirs in the target analysis area and the surface H2 spillover coefficient of each candidate natural hydrogen reservoir are determined, including:

[0013] Based on the interpretation results of seismic data in the target analysis area, the distribution of underground faults and the reservoir distribution range of the target gas reservoir in the target analysis area are determined.

[0014] Based on the distribution of underground faults in the target analysis area and the reservoir distribution range of the target gas reservoir, the number of candidate zones for natural hydrogen gas reservoirs is determined.

[0015] Based on laboratory analysis data, surface H2 content detection was carried out in each candidate zone of natural hydrogen reservoirs to determine the surface H2 spillover coefficient of the candidate zones.

[0016] Furthermore, the surface H2 spillover coefficient is the ratio of the surface H2 content detected in the target natural hydrogen candidate zone to the average of the sum of H2 contents in all natural hydrogen candidate zones in the target analysis area, where,

[0017] When the surface H2 content detected in the target natural hydrogen candidate zone is greater than or equal to the average sum of H2 contents of all natural hydrogen candidate zones in the target analysis area, the surface H2 spillover coefficient is 1.

[0018] When the surface H2 content detected in the target natural hydrogen candidate zone is less than the average of the sum of H2 contents of all natural hydrogen candidate zones in the target analysis area, the surface H2 spillover coefficient = surface H2 content detected in the target natural hydrogen candidate zone / average of the sum of H2 contents of all natural hydrogen candidate zones in the target analysis area.

[0019] Furthermore, based on the total area of ​​each candidate natural hydrogen reservoir zone, the area of ​​iron-rich rock mass distribution zone, iron content, and formation water distribution thickness, the hydrogen source coefficient of each candidate natural hydrogen reservoir zone is determined, including:

[0020] The hydrogen source rock presence coefficient of the target natural hydrogen reservoir candidate zone is obtained by using the ratio of the area of ​​the iron-rich rock mass distribution area of ​​the target natural hydrogen reservoir candidate zone to the total area of ​​the target natural hydrogen reservoir candidate zone.

[0021] The effective coefficient of the hydrogen source rock in the target natural hydrogen reservoir candidate zone is obtained based on the ratio of the iron content in the candidate zone to the total iron content in the target analysis area; wherein, the total iron content in the target analysis area is the sum of the iron contents of all the candidate natural hydrogen reservoir zones in the target analysis area.

[0022] Based on the ratio of the average thickness of groundwater layer in the candidate zone of the target natural hydrogen reservoir to the average thickness of formation water in the target analysis area, the effective coefficient of hydrogen source rock corresponding to the candidate zone of the target natural hydrogen reservoir is obtained; whereby the average thickness of formation water in the target analysis area is the average of the average thickness of formation water in all candidate zones of natural hydrogen reservoirs in the target analysis area.

[0023] The hydrogen source coefficient corresponding to each candidate zone of natural hydrogen reservoir is obtained by multiplying the hydrogen source rock existence coefficient, the effective hydrogen source rock coefficient, and the effective hydrogen source rock coefficient.

[0024] Furthermore, when the area of ​​the iron-rich rock mass distribution area of ​​the target natural hydrogen reservoir candidate zone is greater than or equal to the total area of ​​the target natural hydrogen reservoir candidate zone, the hydrogen source rock existence coefficient of the target natural hydrogen reservoir candidate zone is 1.

[0025] When the area of ​​the iron-rich rock mass distribution zone of the target natural hydrogen reservoir candidate zone is less than the total area of ​​the target natural hydrogen reservoir candidate zone, the hydrogen source rock existence coefficient of the target natural hydrogen reservoir candidate zone is equal to the area of ​​the iron-rich rock mass distribution zone of the target natural hydrogen reservoir candidate zone / the total area of ​​the target natural hydrogen reservoir candidate zone.

[0026] Furthermore, when the iron content in the candidate zone of the target natural hydrogen reservoir is greater than or equal to the total iron content in the target analysis area, the effective coefficient of the hydrogen source rock in the candidate zone of the target natural hydrogen reservoir is 1.

[0027] When the iron content in the candidate zone of the target natural hydrogen reservoir is greater than or equal to the total iron content in the target analysis area, the effective coefficient of the hydrogen source rock in the candidate zone of the target natural hydrogen reservoir is equal to the iron content in the candidate zone of the target natural hydrogen reservoir / the total iron content in the target analysis area.

[0028] Furthermore, when the average thickness of the groundwater layer in the candidate zone of the target natural hydrogen reservoir is greater than or equal to the average thickness of the formation water in the target analysis area, the effective coefficient of the hydrogen source rock corresponding to the candidate zone of the target natural hydrogen reservoir is 1.

[0029] When the average thickness of the groundwater layer in the candidate zone of the target natural hydrogen reservoir is less than the average thickness of the formation water in the target analysis area, the effective coefficient of the hydrogen source rock corresponding to the candidate zone of the target natural hydrogen reservoir is equal to the average thickness of the groundwater layer in the candidate zone of the target natural hydrogen reservoir / the average thickness of the formation water in the target analysis area.

[0030] Furthermore, the formula for the hydrogen source coefficient of the candidate zone for the target natural hydrogen reservoir is as follows:

[0031] R = R C ×R Xi ×R Si

[0032] In the formula, R represents the hydrogen source coefficient, R C To represent the hydrogen source presence coefficient, R Xi R represents the effective coefficient of the hydrogen source. Si The effective coefficient of the hydrogen source is represented by i, where i represents the number of the candidate zone for natural hydrogen reservoirs, i = 1, 2, ..., n.

[0033] Furthermore, based on the thickness of the overlying layer of the candidate natural hydrogen reservoir zone, the gas capping coefficient of the candidate natural hydrogen reservoir zone is determined, including:

[0034] Based on the correspondence between the overlying layer thickness and the total area of ​​the candidate natural hydrogen reservoir zone, the capping coefficient of the candidate natural hydrogen reservoir zone is determined.

[0035] Within the total area of ​​the candidate natural hydrogen gas reservoir, when the lithology of the overlying layer of the candidate natural hydrogen gas reservoir is a sealing lithology and the thickness of the overlying layer of the candidate natural hydrogen gas reservoir is greater than the thickness of the overlying layer of the target analysis area, the gas reservoir sealing coefficient Z = 1.

[0036] When the lithology of the overlying layer of the candidate zone for natural hydrogen gas reservoir is a sealing lithology, and the thickness of the overlying layer of the candidate zone for natural hydrogen gas reservoir is less than or equal to the thickness of the overlying layer of the target analysis area, the gas reservoir sealing coefficient Z = thickness of the overlying layer of the candidate zone for natural hydrogen gas reservoir / thickness of the overlying layer of the target analysis area.

[0037] Furthermore, based on the surface H2 spillover coefficient, hydrogen source coefficient, and gas reservoir capping coefficient of the target natural hydrogen reservoir candidate zone, favorable areas for natural hydrogen reservoirs within the target natural hydrogen reservoir candidate zone are determined, including:

[0038] Based on the surface H2 spillover coefficient, hydrogen source coefficient, and gas reservoir capping coefficient of the candidate natural hydrogen reservoir zone, the favorable areas for natural hydrogen reservoirs in the candidate natural hydrogen reservoir zone are determined.

[0039] The surface H2 spillover coefficient, hydrogen source coefficient, and gas reservoir capping coefficient of the target natural hydrogen reservoir candidate zone are weighted and calculated to determine the hydrogen enrichment degree of the target natural hydrogen reservoir candidate zone.

[0040] Based on the hydrogen enrichment level of the target natural hydrogen reservoir candidate zone, the favorable areas for natural hydrogen reservoirs within the target natural hydrogen reservoir candidate zone are determined.

[0041] Furthermore, the formula for calculating the hydrogen enrichment level of the target natural hydrogen reservoir candidate zone is as follows:

[0042] Hydrogen enrichment level of candidate natural hydrogen reservoirs = a * surface H2 spillover coefficient + b * hydrogen source coefficient + c * reservoir capping coefficient

[0043] Where a represents the minimum contribution of surface H2 spillover, b represents the maximum contribution of hydrogen source to natural hydrogen accumulation, and c represents the next minimum contribution of reservoir capping conditions.

[0044] In a second aspect of the invention, an analytical apparatus for a favorable area of ​​a natural hydrogen reservoir is provided, the apparatus comprising:

[0045] The first determining unit is used to determine, based on seismic data, well logging data, and laboratory analysis data of the target analysis area, the number of candidate zones for natural hydrogen reservoirs in the target analysis area, the surface H2 spillover coefficient of each candidate zone, the total area of ​​each candidate zone, the area of ​​iron-rich rock mass distribution area, the iron content, the thickness of formation water distribution, and the thickness of the overlying layer.

[0046] The second determining unit is used to determine the hydrogen source coefficient of the candidate zone of the target natural hydrogen reservoir based on the total area of ​​the candidate zone of the target natural hydrogen reservoir, the area of ​​the distribution area of ​​the iron-rich rock mass, the iron content and the thickness of the formation water distribution.

[0047] The third determining unit is used to determine the gas cover coefficient of the candidate zone of the target natural hydrogen reservoir based on the thickness of the overlying layer.

[0048] The fourth determining unit is used to determine the favorable areas of natural hydrogen reservoirs in the candidate areas of the target natural hydrogen reservoir based on the surface H2 spillover coefficient, hydrogen source coefficient and gas reservoir capping coefficient.

[0049] In a third aspect of the invention, an electronic device is provided, the electronic device comprising at least one processor and at least one memory, the memory being data-connected to the processor, wherein...

[0050] The memory stores instructions that can be executed by the at least one processor, which, when executed by the at least one processor, enables the at least one processor to perform the method described above.

[0051] In a fourth aspect of the invention, a computer-storeable medium is provided, characterized in that the storage medium stores computer instructions, which, when executed by a processor, specifically perform the steps in the method described above.

[0052] In a fifth aspect of the invention, a computer program product is provided, comprising computer instructions, characterized in that, when the computer instructions are executed by a processor, they specifically perform the steps in the method described above.

[0053] The technical effects and advantages of this invention are as follows:

[0054] The technical solution of this invention is based on the reservoir-forming elements of natural hydrogen reservoirs. It quantitatively evaluates each candidate zone of natural hydrogen reservoirs from the aspects of surface hydrogen content, underground hydrogen generation capacity, and trap accumulation capacity, thereby improving the accuracy and effectiveness of natural hydrogen reservoir exploration potential assessment.

[0055] The technical solution of this invention is based on a comprehensive consideration of the factors contributing to the formation of natural hydrogen reservoirs and possesses certain advanced features. Firstly, surface H2 flux detection technology is used to quickly and preliminarily identify favorable candidate areas for underground natural hydrogen reservoirs. Then, through underground hydrogen source rock evaluation and prediction technology, candidate areas with high hydrogen generation resources are identified. Finally, the reservoir-seal condition evaluation technology for natural hydrogen reservoirs is used to further determine favorable target areas. Therefore, this technology integrates multiple geological factors contributing to the formation of natural hydrogen reservoirs, including surface hydrogen emission content, underground hydrogen generation capacity, and trap accumulation capacity, to quantitatively evaluate various candidate zones, thereby improving the accuracy and effectiveness of natural hydrogen reservoir exploration potential assessment.

[0056] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0057] Figure 1 This is a flowchart of the analytical method for a favorable area of ​​a natural hydrogen reservoir provided in an embodiment of this application;

[0058] Figure 2This is a diagram of the analytical apparatus for a favorable area of ​​a natural hydrogen reservoir provided in an embodiment of this application;

[0059] Figure 3 This is a structural block diagram of an electronic device according to an embodiment of this application;

[0060] Figure 4 A schematic diagram of the distribution of faults and surface H2 test points in Block A of a basin, provided as an embodiment of this application;

[0061] Figure 5 This is a schematic diagram of the thickness of the iron-rich basic rock mass in Block A of a basin, provided in an embodiment of this application.

[0062] Figure 6 This is a schematic diagram of the thickness distribution of stratigraphic water layers in Block A of a basin, provided as an embodiment of this application.

[0063] Figure 7 This is a schematic diagram of the overburden thickness in Block A of a basin, provided as an embodiment of this application. Detailed Implementation

[0064] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0065] To address the shortcomings of existing technologies, this invention discloses an analytical method for favorable areas of natural hydrogen reservoirs, such as... Figure 1 As shown, the method includes,

[0066] Step 1: Based on the seismic data, well logging data, and laboratory analysis data of the target analysis area, determine the number of candidate natural hydrogen reservoir zones in the target analysis area, the surface H2 spillover coefficient of each candidate natural hydrogen reservoir zone, the total area of ​​each candidate natural hydrogen reservoir zone, the area of ​​iron-rich rock mass distribution area, iron content, formation water distribution thickness, and overlying layer thickness.

[0067] Step 2: Determine the hydrogen source coefficient of the candidate zone for the target natural hydrogen reservoir based on the total area of ​​the candidate zone, the area of ​​the iron-rich rock mass distribution area, the iron content, and the thickness of the formation water distribution area.

[0068] Step 3: Determine the gas capping coefficient of the target natural hydrogen reservoir candidate zone based on the thickness of the overlying layer.

[0069] Step 4: Based on the surface H2 spillover coefficient, hydrogen source coefficient, and gas reservoir capping coefficient of the target natural hydrogen reservoir candidate zone, determine the favorable areas of natural hydrogen reservoirs in the target natural hydrogen reservoir candidate zone.

[0070] In a specific embodiment of the present invention, step 1, which involves determining the number of candidate natural hydrogen reservoir zones in the target analysis area and the surface H2 spillover coefficient of each candidate natural hydrogen reservoir zone, includes:

[0071] Step 101: Analyze the seismic and well logging data of the target analysis area to obtain the possible range and area of ​​natural hydrogen gas reservoirs, the area of ​​Fe-rich basic and ultrabasic rock mass distribution, iron content, formation water distribution area, and overlying layer thickness of the target analysis area; wherein, the Fe content is expressed as the average Fe content in the target analysis area.

[0072] Step 102: Based on the interpretation results of seismic data in the target analysis area, determine the distribution of underground faults and the reservoir distribution range of the target gas reservoir in the target analysis area;

[0073] Step 103: Based on the distribution of underground faults in the target analysis area and the reservoir distribution range of the target gas reservoir, determine the number of candidate zones for natural hydrogen gas reservoirs;

[0074] Step 104: Based on the analysis data, conduct surface H2 content detection at the underground fault distribution locations in each candidate zone of natural hydrogen reservoirs to determine the surface H2 spillover coefficient of the candidate zones of natural hydrogen reservoirs.

[0075] In one specific embodiment of the present invention, the surface H2 spillover coefficient is the ratio of the surface H2 content detected in the target natural hydrogen candidate zone to the average of the sum of the H2 contents of all natural hydrogen candidate zones in the target analysis area, wherein,

[0076] When the surface H2 content detected in the target natural hydrogen candidate zone is greater than or equal to the average sum of H2 contents of all natural hydrogen candidate zones in the target analysis area, the surface H2 spillover coefficient is 1.

[0077] When the surface H2 content detected in the target natural hydrogen candidate zone is less than the average of the sum of H2 contents of all natural hydrogen candidate zones in the target analysis area, the surface H2 spillover coefficient = surface H2 content detected in the target natural hydrogen candidate zone / average of the sum of H2 contents of all natural hydrogen candidate zones in the target analysis area.

[0078] In one specific embodiment of the present invention, step 2 includes the following steps:

[0079] Step 201: Based on the ratio of the area of ​​the iron-rich rock mass distribution area of ​​the target natural hydrogen reservoir candidate zone to the total area of ​​the target natural hydrogen reservoir candidate zone, obtain the hydrogen source rock existence coefficient of the target natural hydrogen reservoir candidate zone;

[0080] When the area of ​​the iron-rich rock mass distribution area of ​​the candidate zone of the target natural hydrogen reservoir is greater than or equal to the total area of ​​the candidate zone of the target natural hydrogen reservoir, the hydrogen source rock existence coefficient of the candidate zone of the target natural hydrogen reservoir is 1.

[0081] When the area of ​​the iron-rich rock mass distribution zone of the target natural hydrogen reservoir candidate zone is less than the total area of ​​the target natural hydrogen reservoir candidate zone, the hydrogen source rock existence coefficient of the target natural hydrogen reservoir candidate zone is equal to the area of ​​the iron-rich rock mass distribution zone of the target natural hydrogen reservoir candidate zone / the total area of ​​the target natural hydrogen reservoir candidate zone.

[0082] Step 202: Based on the ratio of iron content in the target natural hydrogen reservoir candidate zone to the total iron content in the target analysis area, obtain the effective coefficient of hydrogen source rock in the target natural hydrogen reservoir candidate zone; wherein, the total iron content in the target analysis area is the sum of the iron contents of all natural hydrogen reservoir candidate zones in the target analysis area;

[0083] When the iron content in the candidate zone of the target natural hydrogen reservoir is greater than or equal to the total iron content in the target analysis area, the effective coefficient of the hydrogen source rock in the candidate zone of the target natural hydrogen reservoir is 1.

[0084] When the iron content in the candidate zone of the target natural hydrogen reservoir is greater than or equal to the total iron content in the target analysis area, the effective coefficient of the hydrogen source rock in the candidate zone of the target natural hydrogen reservoir is equal to the iron content in the candidate zone of the target natural hydrogen reservoir / the total iron content in the target analysis area.

[0085] Step 203: Based on the ratio of the average thickness of the groundwater layer in the target natural hydrogen reservoir candidate zone to the average thickness of the formation water in the target analysis area, obtain the hydrogen source rock effectiveness coefficient corresponding to the target natural hydrogen reservoir candidate zone; wherein, the average thickness of the formation water in the target analysis area is the average of the average thickness of the formation water in all natural hydrogen reservoir candidate zones in the target analysis area.

[0086] When the average thickness of the groundwater layer in the candidate zone of the target natural hydrogen reservoir is greater than or equal to the average thickness of the formation water in the target analysis area, the effective coefficient of the hydrogen source rock corresponding to the candidate zone of the target natural hydrogen reservoir is 1.

[0087] When the average thickness of the groundwater layer in the candidate zone of the target natural hydrogen reservoir is less than the average thickness of the formation water in the target analysis area, the effective coefficient of the hydrogen source rock corresponding to the candidate zone of the target natural hydrogen reservoir is equal to the average thickness of the groundwater layer in the candidate zone of the target natural hydrogen reservoir / the average thickness of the formation water in the target analysis area.

[0088] Step 204: Based on the product of the hydrogen source rock existence coefficient, the effective hydrogen source rock series, and the effective hydrogen source rock coefficient, the hydrogen source coefficient corresponding to each candidate natural hydrogen reservoir zone is obtained. The formula for the hydrogen source coefficient of the target candidate natural hydrogen reservoir zone is as follows:

[0089] R = R C ×R Xi ×R Si

[0090] In the formula, R represents the hydrogen source coefficient, R C To represent the hydrogen source presence coefficient, R Xi R represents the effective coefficient of the hydrogen source. Si The effective coefficient of the hydrogen source is represented by i, where i represents the number of the candidate zone for natural hydrogen reservoirs, i = 1, 2, ..., n.

[0091] In one specific embodiment of the present invention, step 3 includes the following steps:

[0092] Based on the correspondence between the overlying layer thickness and the total area of ​​the candidate natural hydrogen reservoir zone, the capping coefficient of the candidate natural hydrogen reservoir zone is determined.

[0093] Within the total area of ​​the candidate natural hydrogen gas reservoir, when the lithology of the overlying layer of the candidate natural hydrogen gas reservoir is a sealing lithology and the thickness of the overlying layer of the candidate natural hydrogen gas reservoir is greater than the thickness of the overlying layer of the target analysis area, the gas reservoir sealing coefficient Z = 1.

[0094] When the lithology of the overlying layer of the candidate zone for natural hydrogen gas reservoir is a sealing lithology, and the thickness of the overlying layer of the candidate zone for natural hydrogen gas reservoir is less than or equal to the thickness of the overlying layer of the target analysis area, the gas reservoir sealing coefficient Z = thickness of the overlying layer of the candidate zone for natural hydrogen gas reservoir / thickness of the overlying layer of the target analysis area.

[0095] In a specific embodiment of the present invention, the specific steps for step 4 are as follows:

[0096] The surface H2 spillover coefficient, hydrogen source coefficient, and gas reservoir capping coefficient of the target natural hydrogen reservoir candidate zone are weighted and calculated to determine the hydrogen enrichment degree of the target natural hydrogen reservoir candidate zone.

[0097] Based on the hydrogen enrichment level of the target natural hydrogen reservoir candidate zone, the favorable areas for natural hydrogen reservoirs within the target natural hydrogen reservoir candidate zone are determined.

[0098] The formula for calculating the hydrogen enrichment level of the candidate zone for the target natural hydrogen reservoir is as follows:

[0099] Hydrogen enrichment level of candidate natural hydrogen reservoirs = a * surface H2 spillover coefficient + b * hydrogen source coefficient + c * reservoir capping coefficient

[0100] Where a represents the minimum contribution of surface H2 spillover, b represents the maximum contribution of hydrogen source to natural hydrogen accumulation, and c represents the next minimum contribution of reservoir capping conditions.

[0101] Preferably, favorable areas for natural hydrogen reservoirs within the candidate natural hydrogen reservoir zone are determined based on the surface H2 spillover coefficient, hydrogen source coefficient, and gas reservoir capping coefficient. This includes: comprehensively considering the geological conditions for natural hydrogen accumulation, and quantitatively evaluating the hydrogen richness of the natural hydrogen reservoir zone using the weighted average of the above coefficients. Specifically, the hydrogen richness of the candidate natural hydrogen reservoir zone = 0.2 × surface H2 spillover coefficient + 0.5 × hydrogen source coefficient + 0.3 × gas reservoir capping coefficient. The hydrogen source contributes the most to natural hydrogen accumulation, assigned a value of 0.5, followed by the gas reservoir capping condition, assigned a value of 0.3, while the surface H2 spillover contributes the least, assigned a value of 0.2. The larger this weighted average, the higher the abundance and the larger the reserve of natural hydrogen in the candidate zone, making it the most favorable area for natural hydrogen reservoirs.

[0102] This invention also provides an analytical apparatus for a favorable area of ​​natural hydrogen reservoirs, such as... Figure 2 As shown, the device includes,

[0103] The first determining unit is used to determine, based on seismic data, well logging data, and laboratory analysis data of the target analysis area, the number of candidate zones for natural hydrogen reservoirs in the target analysis area, the surface H2 spillover coefficient of each candidate zone, the total area of ​​each candidate zone, the area of ​​iron-rich rock mass distribution area, the iron content, the thickness of formation water distribution, and the thickness of the overlying layer.

[0104] The second determining unit is used to determine the hydrogen source coefficient of the candidate zone of the target natural hydrogen reservoir based on the total area of ​​the candidate zone of the target natural hydrogen reservoir, the area of ​​the distribution area of ​​the iron-rich rock mass, the iron content and the thickness of the formation water distribution.

[0105] The third determining unit is used to determine the gas cover coefficient of the candidate zone of the target natural hydrogen reservoir based on the thickness of the overlying layer.

[0106] The fourth determining unit is used to determine the favorable areas of natural hydrogen reservoirs in the candidate areas of the target natural hydrogen reservoir based on the surface H2 spillover coefficient, hydrogen source coefficient and gas reservoir capping coefficient.

[0107] Regarding the apparatus in the above embodiments, the specific manner in which each unit performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0108] Based on the above disclosure, the present invention also provides an electronic device. For example... Figure 3 As shown, the electronic device of this disclosure includes at least one processor electrically connected to the present invention and at least one memory electrically connected to the processor, wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the method steps as executed by the controller above.

[0109] An embodiment of the present invention also provides a storable medium storing computer instructions, which, when executed by a processor, are specifically executed according to the steps in the method described in the above embodiment.

[0110] An embodiment of the present invention also provides a computer program product, including computer instructions, which, when executed by a processor, specifically follow the steps in the method described in the above embodiment.

[0111] The following will provide further explanation with reference to specific embodiments.

[0112] Example: Taking the study of natural hydrogen reservoirs in Block A of a basin as an example, this invention patent will be further described in detail.

[0113] Figure 1 This is a flowchart illustrating a method for evaluating favorable areas of natural hydrogen reservoirs, as provided in Embodiment 1 of this application. This embodiment is applicable to the quantitative evaluation of natural hydrogen reservoir zones, and the method can be executed by an evaluation device for natural hydrogen reservoir zones. Figure 1 As shown, the method includes:

[0114] S110: Based on the seismic data, well logging data, and laboratory analysis data of the target evaluation area, determine the range and area of ​​the candidate natural hydrogen reservoir zone, the area of ​​the distribution zone of Fe-rich basic and ultrabasic rock masses, the iron content, the distribution area of ​​formation water, the fault type, and the thickness of the overlying layer in the target evaluation area.

[0115] In this embodiment of the invention, data on candidate zones for natural hydrogen reservoirs in Block A of a basin can be obtained by interpreting seismic and well logging data. Specifically, based on the seismic and well logging data of the target exploration area, the possible range and area of ​​natural hydrogen reservoirs, the area of ​​Fe-rich basic and ultrabasic rock mass distribution, iron content, formation water distribution area, surface H2 content, fault distribution, and overlying layer thickness of the target exploration area can be obtained.

[0116] The surface H2 content is represented by the average H2 content in Basin A. The iron content is represented by the average Fe content in Basin A.

[0117] S120: Based on the seismic data interpretation results, the distribution of underground faults (mainly source faults) in Block A and the reservoir distribution range of the main target layers of the gas reservoirs are determined, further identifying three candidate natural hydrogen gas reservoirs: H1, H2, and H3. On this basis, the surface H2 content in Block A is investigated to determine the H2 surface spillover coefficient of the candidate natural hydrogen gas reservoir zones. The H2 surface spillover coefficient represents the underground hydrogen enrichment capacity of the natural hydrogen gas reservoir zone, i.e., the probability that the candidate natural gas reservoir zone possesses favorable conditions for natural hydrogen enrichment.

[0118] H2 molecules are small and highly mobile, making it easy for underground H2 to escape to the surface, primarily through source faults. Therefore, the amount of surface H2 can indicate the amount of underground H2, further suggesting a higher probability of underground H2 enrichment. Specifically, the probability of underground H2 presence and enrichment in the area where a candidate natural hydrogen reservoir is located is represented by the surface H2 overflow coefficient.

[0119] Specifically, the surface H2 spillover coefficient can be expressed as the ratio of the surface H2 content detected in the natural hydrogen candidate zone to the average H2 content of the entire block.

[0120] This explanation will be based on an example from Block A of a certain basin. Figure 4 This is a schematic diagram showing the superposition of the fault in Block A of the application embodiment and the H2 content at the surface H2 test point. (See attached diagram.) Figure 4 As shown, the red line represents the source fault, the red dots represent surface H2 test points, and the yellow bars represent surface H2 content. Based on test data, the average surface H2 content in this area is determined to be 2000 ppm. Three candidate natural hydrogen reservoir zones, H1, H2, and H3, exist within the block.

[0121] The calculation method for the surface H2 spillover coefficient in each natural hydrogen reservoir area is as follows: For candidate zone H1 of natural hydrogen reservoir, three surface test points were used, and the surface H2 contents were measured to be 2500 ppm, 3200 ppm, and 3600 ppm, respectively. The average surface H2 content was V. 1H2 The surface H2 spillover coefficient S of the H1 natural hydrogen reservoir candidate zone is 3100 ppm, which is greater than the average iron content of 2000 ppm in Block A. 1H2 =1; For the H2 candidate zone of natural hydrogen reservoir, one surface test point was used, and the surface H2 content was detected to be 1500 ppm. Therefore, the surface H2 spillover coefficient S of the H2 natural hydrogen reservoir candidate zone is 1. 2H2 =V 2H2 / V 平H2 =0.75; For candidate zone H3 of natural hydrogen reservoir, one surface test point was used, and the surface H2 content was detected to be 1800 ppm. Therefore, the surface H2 spillover coefficient S of candidate zone H3 of natural hydrogen reservoir is 0.75. 3H2 =V 3H2 / V 平H2 =0.9.

[0122] S130: For each candidate zone of natural hydrogen reservoir, the hydrogen source coefficient of the candidate zone is determined based on the total area of ​​the candidate zone, the area of ​​the Fe-rich basic-ultrabasic rock mass distribution area, the iron content, and the average thickness of the formation water distribution; wherein, the hydrogen source coefficient is used to represent the hydrogen generation capacity of the candidate zone of natural hydrogen reservoir, that is, the probability that the candidate zone of natural hydrogen reservoir has favorable hydrogen generation conditions.

[0123] In natural hydrogen reservoirs, hydrogen is mainly generated through water-rock reaction (inorganic). Under certain geological conditions, iron-rich rocks in the Earth's crust react with formation water to generate hydrogen (Equation 1). Therefore, in this embodiment of the invention, the hydrogen source coefficient of the candidate zone for a natural hydrogen reservoir is determined based on the total area of ​​the candidate zone, the area of ​​the iron-rich rock mass distribution area, the area of ​​the formation water distribution area, and the iron content.

[0124] Fe(II) + H₂O → Fe(III) oxide + H₂ (Equation 1)

[0125] The wider the distribution of iron-rich rock bodies, the greater the likelihood of the presence of hydrogen source rocks; the higher the iron content, the stronger the hydrogen supply capacity of the source rocks; the more abundant the formation water, the stronger the hydrogen generation capacity through reaction with the water-rock of the iron-rich rocks. The probability of a hydrogen-rich gas reservoir candidate zone containing hydrogen source rocks is called the hydrogen source rock existence coefficient; the probability of a hydrogen-rich gas reservoir candidate zone possessing effective hydrogen supply capacity is called the hydrogen source rock effectiveness coefficient; and the probability of a hydrogen-rich gas reservoir candidate zone possessing effective hydrogen generation capacity is called the hydrogen source rock efficiency coefficient.

[0126] Specifically, the hydrogen source rock existence coefficient can be expressed as the ratio of the area of ​​the iron-rich rock mass distribution zone to the total area of ​​the candidate zone for natural hydrogen reservoirs; the hydrogen source rock effectiveness coefficient can be expressed as the ratio of the average iron content in the candidate zone for hydrogen reservoirs to the average iron content in the entire iron-rich rock mass; and the hydrogen source rock efficiency coefficient can be expressed as the ratio of the average thickness of the groundwater layer in the candidate zone for hydrogen reservoirs to the average thickness of the groundwater layer in the entire block. Furthermore, the hydrogen source coefficient can be determined by multiplying the hydrogen source rock existence coefficient and the hydrogen source rock effectiveness coefficient.

[0127] This explanation will be based on an example from Block A of a certain basin. Figure 5 This is a schematic diagram showing the thickness of the iron-rich basic rock mass in Block A of the application embodiment. Figure 5 As shown, the black solid line represents the thickness of the iron-rich rock mass. The iron content in this area is determined to be an average of 50% based on laboratory data. There are three candidate zones for hydrogen-rich gas reservoirs in the block: H1, H2, and H3. Figure 6 This is a schematic diagram of the formation water thickness in the target section of Block A in the application embodiment, as shown below. Figure 6 As shown, the black solid line represents the formation water thickness. The average thickness of this block is determined to be 30m based on well logging interpretation and seismic prediction.

[0128] The calculation method for the hydrogen source rock existence coefficient of each natural hydrogen reservoir area is as follows: For candidate natural hydrogen reservoir zone H1, its total area S1 is 35 km². 2 Furthermore, H1 is entirely located on a ferruginous mafic rock mass with a thickness greater than 50m (ferruginous mafic rock with a thickness greater than 50m is defined as the effective hydrogen source rock boundary), and the area S of the ferruginous mafic rock distribution in the H1 candidate gas reservoir is... 1Fe 35km 2 Therefore, the hydrogen source rock existence coefficient R of the H1 natural hydrogen reservoir candidate zone is... C1 =S 1Fe / S1=1; For candidate zone H2 of natural hydrogen reservoir, its total area S2 is 27km. 2 Furthermore, H2 is located on an iron-rich basic rock mass with a thickness greater than 50m, and the area S 2Fe 12km 2 Therefore, the hydrogen source rock existence coefficient R of the H2 natural hydrogen reservoir candidate zone is... C2 =S 2Fe / S2=0.44; For candidate zone H3 of natural hydrogen reservoir, its total area S3 is 20km. 2 Furthermore, H3 is located on an iron-rich mafic rock mass with a thickness greater than 50m, with an area S 3Fe 8km 2 Therefore, the hydrogen source rock existence coefficient R of the H3 natural hydrogen reservoir candidate zone is... C3 =S 3Fe / S3=0.4.

[0129] The calculation method for the effective coefficient of hydrogen source rocks in each natural hydrogen reservoir area is as follows: For candidate natural hydrogen reservoir zone H1, the average iron content V is determined by testing and analysis. 1Fe The iron content is 60%, which is greater than the average iron content of 50% in Block A. Therefore, the hydrogen source rock presence coefficient R in the H1 natural hydrogen reservoir candidate zone is... X1 =1; For the candidate zone H2 of natural hydrogen reservoir, the average iron content V was determined by testing and analysis. 2Fe The iron content is 45%, which is lower than the average iron content of 50% in Block A. Therefore, the hydrogen source rock presence coefficient R in the H2 natural hydrogen reservoir candidate zone is... X2 =V 2Fe / V Fe =0.9; For candidate zone H3 of natural hydrogen reservoir, the average iron content V was determined by testing and analysis. 3Fe The iron content is 30%, which is less than the average iron content of 50% in Block A. Therefore, the hydrogen source rock presence coefficient R in the H3 natural hydrogen reservoir candidate zone is... X3 =V 3Fe / V Fe =0.6.

[0130] The calculation method for the effective coefficient of hydrogen source rocks in each natural hydrogen reservoir area is as follows: For candidate natural hydrogen reservoir zone H1, the seismically predicted average formation water thickness is 35m, which is greater than the average formation water thickness of 30m in block A. Therefore, the effective coefficient R of hydrogen source rocks in candidate natural hydrogen reservoir zone H1 is... S1 =1; For candidate zone H2 of natural hydrogen reservoir, the average thickness of the formation water predicted by seismic analysis is 20m, therefore the effective coefficient R of the hydrogen source rock in candidate zone H2 of natural hydrogen reservoir is 1. S2 =0.67; For candidate zone H3 of natural hydrogen reservoir, the average thickness of the formation water predicted by seismic analysis is 24m, therefore the effective coefficient R of the hydrogen source rock in candidate zone H3 of natural hydrogen reservoir is 0.67. S3 =0.8.

[0131] Furthermore, the hydrogen source coefficient can be determined using the following formula: R = R C ×R X ×R S In the formula, R represents the hydrogen source coefficient, R C R is the hydrogen source presence coefficient. X R is the effective coefficient of the hydrogen source. S This is the effective coefficient of the hydrogen source.

[0132] The calculation methods for the hydrogen source coefficient of each natural hydrogen reservoir area are as follows: For candidate zone H1 of natural hydrogen reservoir, the hydrogen source coefficient R1 = 1; for candidate zone H2 of natural hydrogen reservoir, the hydrogen source coefficient R2 = 0.265; for candidate zone H3 of natural hydrogen reservoir, the hydrogen source coefficient R3 = 0.192.

[0133] S140: For each candidate zone of natural hydrogen reservoir, the capping coefficient of the candidate zone is determined based on the trap area and the thickness of the overlying layer. The capping coefficient represents the accumulation capacity of the candidate zone, and the trap area is the area of ​​the candidate zone.

[0134] Among them, the thickness of the overlying layer can reflect the sealing performance of the gas reservoir trap. The thicker the overlying layer, the more stable the capping layer of the candidate zone of the natural hydrogen gas reservoir, and the stronger the effective sealing performance.

[0135] In this embodiment of the invention, different upper cover layer thicknesses can be assigned values, and the sealing coefficient can be determined based on the assigned upper cover layer thickness.

[0136] In this embodiment of the invention, the capping coefficient of a candidate zone for a natural hydrogen gas reservoir can be determined based on a predetermined correspondence between the thickness of the overlying layer and the gas reservoir trap. When the lithology of the overlying layer is a sealing lithology and the thickness H > 40 m, the gas reservoir capping coefficient Z = 1; when the lithology of the overlying layer is a sealing lithology and the thickness H ≤ 40 m, the gas reservoir capping coefficient Z = H / 40.

[0137] This explanation will be based on an example from Block A of a certain basin. Figure 7 This diagram illustrates the thickness of the caprock over the natural hydrogen trap in Block A of the application embodiment. The solid black line represents the caprock thickness. Based on well logging interpretation, the average caprock thickness in this block is determined to be 40m, which is sufficient for complete sealing. Three candidate natural hydrogen reservoir zones, H1, H2, and H3, exist within the block.

[0138] The calculation methods for the trap cover coefficient of each natural hydrogen reservoir area are as follows: For candidate natural hydrogen reservoir zone H1, the average thickness of the overlying layer is 37m, and its trap cover coefficient Z1 = 0.925; for candidate natural hydrogen reservoir zone H2, the average thickness of the overlying layer is 20m, and its trap cover coefficient Z2 = 0.5; for candidate natural hydrogen reservoir zone H3, the average thickness of the overlying layer is 25m, and its trap cover coefficient Z3 = 0.625.

[0139] S150: Based on the surface H2 spillover coefficient, hydrogen source coefficient, and gas reservoir capping coefficient of each candidate natural hydrogen reservoir zone, favorable areas for natural hydrogen reservoirs are determined. These favorable areas can be candidate natural hydrogen reservoir zones that meet certain conditions, i.e., candidate zones with further exploration value. The surface H2 spillover coefficient, hydrogen source coefficient, and gas reservoir capping coefficient can be processed to obtain a numerical value, which is then compared with a preset threshold to determine whether a candidate natural hydrogen reservoir zone is a favorable area for natural hydrogen reservoirs.

[0140] In summary, the H1 candidate zone for natural hydrogen reservoirs has the best surface H2 spillover coefficient, hydrogen source coefficient, and gas reservoir capping coefficient, making it the most favorable area for natural hydrogen reservoirs and a priority for drilling and development.

[0141] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An analytical method for favorable areas of natural hydrogen reservoirs, characterized in that, The method includes, Based on the seismic data, well logging data and laboratory analysis data of the target analysis area, determine the number of candidate zones for natural hydrogen reservoirs in the target analysis area, the surface H2 spillover coefficient of each candidate zone, the total area of ​​each candidate zone, the area of ​​the iron-rich rock mass distribution area, the iron content, the thickness of the formation water distribution and the thickness of the overlying layer. Based on the total area of ​​the candidate zone for the target natural hydrogen reservoir, the area of ​​the iron-rich rock mass distribution area, the iron content, and the thickness of the formation water distribution, the hydrogen source coefficient of the candidate zone for the target natural hydrogen reservoir is determined. Based on the thickness of the overlying layer of the candidate zone for the target natural hydrogen reservoir, the gas capping coefficient of the candidate zone for the target natural hydrogen reservoir is determined. Based on the surface H2 spillway coefficient, hydrogen source coefficient, and gas reservoir capping coefficient of the candidate natural hydrogen reservoir zones, favorable areas for natural hydrogen reservoirs within the candidate zones are determined; among them, The surface H2 spillover coefficient is the ratio of the surface H2 content detected in the target natural hydrogen reservoir candidate zone to the average of the sum of H2 contents in all natural hydrogen reservoir candidate zones in the target analysis area. When the surface H2 content detected in the candidate zone of the target natural hydrogen reservoir is greater than or equal to the average sum of H2 contents of all candidate zones of natural hydrogen reservoirs in the target analysis area, the surface H2 spillover coefficient is 1. When the surface H2 content detected in the target natural hydrogen reservoir candidate zone is less than the average of the sum of H2 contents of all natural hydrogen reservoir candidate zones in the target analysis area, the surface H2 spillover coefficient = surface H2 content detected in the target natural hydrogen reservoir candidate zone / average of the sum of H2 contents of all natural hydrogen reservoir candidate zones in the target analysis area.

2. The analytical method for favorable areas of natural hydrogen reservoirs according to claim 1, characterized in that, Determine the number of candidate natural hydrogen reservoirs in the target analysis area and the surface H2 spillover coefficient of each candidate natural hydrogen reservoir, including: Based on the interpretation results of seismic data in the target analysis area, determine the distribution of underground faults and the reservoir distribution range of the target gas reservoir in the target analysis area; Based on the distribution of underground faults in the target analysis area and the reservoir distribution range of the target gas reservoir, the number of candidate zones for natural hydrogen gas reservoirs is determined. Based on laboratory analysis data, surface H2 content detection was carried out in each candidate zone of natural hydrogen reservoirs to determine the surface H2 spillover coefficient of the candidate zones.

3. The analytical method for favorable areas of natural hydrogen reservoirs according to claim 1, characterized in that, Based on the total area of ​​the candidate zones for the target natural hydrogen reservoir, the area of ​​the iron-rich intrusive body distribution area, the iron content, and the thickness of the formation water distribution, the hydrogen source coefficient of the candidate zones for the target natural hydrogen reservoir is determined, including: The hydrogen source rock presence coefficient of the target natural hydrogen reservoir candidate zone is obtained by using the ratio of the area of ​​the iron-rich rock mass distribution area of ​​the target natural hydrogen reservoir candidate zone to the total area of ​​the target natural hydrogen reservoir candidate zone. The effective coefficient of hydrogen source rock in the target natural hydrogen reservoir candidate zone is obtained based on the ratio of the average iron content in the target analysis area to the average iron content in the target analysis area; wherein, the average iron content in the target analysis area is the average of the sum of the iron contents of all natural hydrogen reservoir candidate zones in the target analysis area. Based on the ratio of the average formation water thickness in the target natural hydrogen reservoir candidate zone to the average formation water thickness in the target analysis area, the hydrogen source rock effectiveness coefficient corresponding to the target natural hydrogen reservoir candidate zone is obtained; whereby the average formation water thickness in the target analysis area is the average of the average formation water thickness of all natural hydrogen reservoir candidate zones in the target analysis area. The hydrogen source coefficient for each candidate zone of natural hydrogen reservoir is obtained by multiplying the hydrogen source rock existence coefficient, the effective hydrogen source rock coefficient, and the effective hydrogen source rock coefficient.

4. The analytical method for favorable areas of natural hydrogen reservoirs according to claim 3, characterized in that, When the area of ​​the iron-rich rock mass distribution area of ​​the candidate zone of the target natural hydrogen reservoir is greater than or equal to the total area of ​​the candidate zone of the target natural hydrogen reservoir, the hydrogen source rock existence coefficient of the candidate zone of the target natural hydrogen reservoir is 1. When the area of ​​the iron-rich rock mass distribution zone of the target natural hydrogen reservoir candidate zone is less than the total area of ​​the target natural hydrogen reservoir candidate zone, the hydrogen source rock existence coefficient of the target natural hydrogen reservoir candidate zone is equal to the area of ​​the iron-rich rock mass distribution zone of the target natural hydrogen reservoir candidate zone / the total area of ​​the target natural hydrogen reservoir candidate zone.

5. The analytical method for favorable areas of natural hydrogen reservoirs according to claim 3, characterized in that, When the average iron content in the candidate zone of the target natural hydrogen reservoir is greater than or equal to the average iron content in the target analysis area, the effective coefficient of the hydrogen source rock in the candidate zone of the target natural hydrogen reservoir is 1. When the average iron content in the candidate zone of the target natural hydrogen reservoir is less than the average iron content in the target analysis area, the effective coefficient of the hydrogen source rock in the candidate zone of the target natural hydrogen reservoir is equal to the average iron content in the candidate zone of the target natural hydrogen reservoir / the average iron content in the target analysis area.

6. The analytical method for favorable areas of natural hydrogen reservoirs according to claim 3, characterized in that, When the average thickness of the formation water in the candidate zone of the target natural hydrogen reservoir is greater than or equal to the average thickness of the formation water in the target analysis area, the effective coefficient of the hydrogen source rock corresponding to the candidate zone of the target natural hydrogen reservoir is 1. When the average thickness of the formation water in the candidate zone of the target natural hydrogen reservoir is less than the average thickness of the formation water in the target analysis area, the effective coefficient of the hydrogen source rock corresponding to the candidate zone of the target natural hydrogen reservoir is equal to the average thickness of the formation water in the candidate zone of the target natural hydrogen reservoir / the average thickness of the formation water in the target analysis area.

7. The analytical method for favorable areas of natural hydrogen reservoirs according to any one of claims 1-6, characterized in that, The formula for the hydrogen source coefficient of the candidate zone of the target natural hydrogen reservoir is as follows: R=R C × R Xi × R Si In the formula, R represents the hydrogen source coefficient, R C To represent the hydrogen source presence coefficient, R Xi R represents the effective coefficient of the hydrogen source. Si The effective coefficient of the hydrogen source is represented by i, where i represents the number of the candidate zone for natural hydrogen reservoirs, i = 1, 2, ..., n.

8. The analytical method for favorable areas of natural hydrogen reservoirs according to claim 1, characterized in that, Based on the surface H2 spillover coefficient, hydrogen source coefficient, and gas reservoir capping coefficient of the target natural hydrogen reservoir candidate zone, favorable areas for natural hydrogen reservoirs are determined, including: Based on the surface H2 spillover coefficient, hydrogen source coefficient, and gas reservoir capping coefficient of the candidate natural hydrogen reservoir zone, the favorable areas for natural hydrogen reservoirs in the candidate natural hydrogen reservoir zone are determined. The surface H2 spillover coefficient, hydrogen source coefficient, and gas reservoir capping coefficient of the target natural hydrogen reservoir candidate zone are weighted and calculated to determine the hydrogen enrichment degree of the target natural hydrogen reservoir candidate zone. Based on the hydrogen enrichment level of the target natural hydrogen reservoir candidate zone, the favorable areas for natural hydrogen reservoirs within the target natural hydrogen reservoir candidate zone are determined.

9. The analytical method for favorable areas of natural hydrogen reservoirs according to claim 8, characterized in that, The formula for calculating the hydrogen enrichment level of the candidate zone for the target natural hydrogen reservoir is as follows: Hydrogen enrichment level of the target natural hydrogen reservoir candidate zone = a Surface H2 spillover coefficient + b Hydrogen source coefficient + c Gas reservoir capping coefficient Where a represents the contribution of surface H2 spillover, b represents the contribution of hydrogen source to natural hydrogen accumulation, and c represents the contribution of gas reservoir capping conditions.

10. An analytical apparatus for a favorable area of ​​a natural hydrogen reservoir, characterized in that, The device includes, The first determining unit is used to determine, based on seismic data, well logging data, and laboratory analysis data of the target analysis area, the number of candidate natural hydrogen reservoir zones, the surface H2 spillover coefficient of each candidate natural hydrogen reservoir zone, the total area of ​​each candidate natural hydrogen reservoir zone, the area of ​​iron-rich rock mass distribution area, the iron content, the thickness of formation water distribution, and the thickness of the overlying layer. The surface H2 spillover coefficient is the ratio of the surface H2 content detected in the target natural hydrogen reservoir candidate zone to the average of the sum of H2 contents in all natural hydrogen reservoir candidate zones in the target analysis area. When the surface H2 content detected in the candidate zone of the target natural hydrogen reservoir is greater than or equal to the average sum of H2 contents of all candidate zones of natural hydrogen reservoirs in the target analysis area, the surface H2 spillover coefficient is 1. When the surface H2 content detected in the target natural hydrogen reservoir candidate zone is less than the average of the sum of H2 contents of all natural hydrogen reservoir candidate zones in the target analysis area, the surface H2 spillover coefficient = surface H2 content detected in the target natural hydrogen reservoir candidate zone / average of the sum of H2 contents of all natural hydrogen reservoir candidate zones in the target analysis area. The second determining unit is used to determine the hydrogen source coefficient of the candidate zone of the target natural hydrogen reservoir based on the total area of ​​the candidate zone of the target natural hydrogen reservoir, the area of ​​the distribution area of ​​the iron-rich rock mass, the iron content and the thickness of the formation water distribution. The third determining unit is used to determine the gas cover coefficient of the candidate zone of the target natural hydrogen reservoir based on the thickness of the overlying layer. The fourth determining unit is used to determine the favorable areas of natural hydrogen reservoirs in the candidate areas of the target natural hydrogen reservoir based on the surface H2 spillover coefficient, hydrogen source coefficient and gas reservoir capping coefficient.

11. An electronic device comprising at least one processor and at least one memory, the memory being data-connected to the processor, wherein, The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-9.

12. A computer-storable medium, characterized in that, The storable medium stores computer instructions, which, when executed by a processor, specifically perform the steps of the method as described in any one of claims 1-9.

13. A computer program product comprising computer instructions, characterized in that, When the computer instructions are executed by the processor, they specifically perform the steps in the method as described in any one of claims 1-9.

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