Method and device for determining absolute time of tectonic deformation, equipment and medium

Abstract

The invention discloses a method and device for determining the absolute time of tectonic deformation, equipment and a medium. The method comprises the following steps: determining mineral samples at at least two positions of a target structure, and performing low-temperature thermal chronological analysis on each mineral sample; performing thermal history simulation according to the low-temperature thermal chronology analysis result of each mineral sample to obtain a thermal history simulation result of each position of the target structure; and performing difference comparison on the thermal history simulation results of the positions of the target structure to obtain the structural deformation absolute time of the target structure. According to the technical scheme, after the mineral samples at different positions of the target structure are obtained through differential sampling, the tectonic deformation absolute time of the target structure is determined on the basis of low-temperature thermal chronology analysis, thermal history simulation analysis and differential comparative analysis, the problem that the tectonic deformation absolute time of an existing sedimentary basin is difficult to accurately determine is solved, and the accuracy of the tectonic deformation absolute time is improved. The method for determining the absolute time of the tectonic deformation of the sedimentary basin is realized.

Description

Technical Field

[0001] This invention relates to the field of geological exploration technology, and in particular to a method, apparatus, equipment and medium for determining the absolute time of tectonic deformation. Background Technology

[0002] In the foreland thrust belts or complex tectonic zones of sedimentary basins, the tectonic evolution process is very complex due to the fact that the tectonic structure often exhibits multi-stage superposition characteristics. Tectonic dating methods have become an important means to reconstruct the deformation process of complex structures and explore their genesis mechanisms.

[0003] Currently, commonly used methods for absolute dating of tectonic deformation include U-Pb, K-Ar, and Ar-Ar dating of syntectonic magmatic bodies, sedimentary strata, or minerals. These methods are widely used in the study of orogenic belts and fault zones of different scales and can obtain the absolute age of tectonic formation.

[0004] However, in sedimentary basins, the main battleground for oil and gas exploration, the surface is often covered by Mesozoic-Cenozoic strata or loose sediments. Outcrops of magmatic bodies, sedimentary strata, and minerals from the same tectonic period are very limited. Furthermore, due to limitations in observation methods and scale, it is difficult to determine the contemporaneous formation relationship (i.e., cotectonic relationship) between these bodies, veins, or minerals and tectonic deformation. This makes the aforementioned absolute dating methods difficult to apply in the study of tectonic deformation in sedimentary basins. In addition, commonly used fission track and (U-Th) / He low-temperature thermochronology methods often reflect regional tectonic uplift-subsidence events, and cannot accurately define the absolute time of tectonic deformation. Summary of the Invention

[0005] This invention provides a method, apparatus, equipment, and medium for determining the absolute time of tectonic deformation, which solves the problem that the absolute time of tectonic deformation in sedimentary basins is difficult to determine accurately, and realizes the determination of the absolute time of tectonic deformation in sedimentary basins.

[0006] In a first aspect, embodiments of the present invention provide a method for determining the absolute time of structural deformation, the method comprising:

[0007] Identify mineral samples at at least two locations within the target structure and perform low-temperature thermochronological analysis on each mineral sample.

[0008] Thermal history simulations were performed based on the low-temperature thermochronological analysis results of each mineral sample to obtain the thermal history simulation results of each location of the target structure.

[0009] By comparing the thermal history simulation results at various locations of the target structure, the absolute time of structural deformation of the target structure is obtained.

[0010] Secondly, embodiments of the present invention also provide a device for determining the absolute time of structural deformation, the device comprising:

[0011] The low-temperature thermochronology analysis module is used to identify mineral samples at at least two locations of the target structure and perform low-temperature thermochronology analysis on each mineral sample.

[0012] The thermal history simulation module is used to perform thermal history simulation based on the low-temperature thermochronological analysis results of each mineral sample, and obtain the thermal history simulation results of each location of the target structure.

[0013] The difference comparison module is used to compare the thermal history simulation results of various locations of the target structure to obtain the absolute time of structural deformation of the target structure.

[0014] Thirdly, embodiments of the present invention also provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method for determining the absolute time of structural deformation as described in any of the embodiments of the present invention.

[0015] Fourthly, embodiments of the present invention also provide a storage medium for storing computer-executable instructions, which, when executed by a computer processor, are used to perform the method for determining the absolute time of structural deformation as described in any of the embodiments of the present invention.

[0016] The technical solution of this invention obtains mineral samples from different locations of the target structure through differential sampling, and then determines the absolute time of tectonic deformation of the target structure based on low-temperature thermochronological analysis, thermal history simulation analysis, and differential comparison analysis. This solves the problem that the absolute time of tectonic deformation in existing sedimentary basins is difficult to determine accurately, and realizes the determination of the absolute time of tectonic deformation in sedimentary basins.

[0017] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a flowchart of a method for determining the absolute time of structural deformation provided in Embodiment 1 of the present invention;

[0020] Figure 2 This is a flowchart of a method for determining the absolute time of structural deformation provided in Embodiment 2 of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of a device for determining the absolute time of structural deformation provided in Embodiment 3 of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of an electronic device provided in Embodiment 4 of the present invention. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. 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 should fall within the scope of protection of the present invention.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices. In the embodiments of this application, certain software, components, models, and other existing industry solutions may be mentioned. These should be considered exemplary, intended only to illustrate the feasibility of implementing the technical solutions of this application, and do not imply that the applicant has already used or necessarily used such solutions.

[0025] The acquisition, transmission, storage, use, and processing of data in this application all comply with the relevant provisions of national laws and regulations.

[0026] Example 1

[0027] Figure 1 This is a flowchart illustrating a method for determining the absolute time of tectonic deformation according to Embodiment 1 of the present invention. This embodiment is applicable to determining the absolute time of tectonic deformation in sedimentary basins. The method can be executed by a device for determining the absolute time of tectonic deformation, which can be implemented in hardware and / or software and can be configured in any electronic device with network communication and computing capabilities. Figure 1As shown, the method includes:

[0028] S110. Identify mineral samples at at least two locations of the target structure and perform low-temperature thermochronological analysis on each mineral sample.

[0029] It should be noted that, because the surface of sedimentary basins is often covered by Mesozoic-Cenozoic strata or loose sediments, the exposure of magmatic bodies, sedimentary strata, and minerals from the same tectonic period is very limited, and observation is also limited by the methods and scale of observation, such as in basin-covered areas. In most cases, only a small number of rock bodies, veins, or minerals are encountered through drilling, making it difficult to determine the contemporaneous formation relationship between the rock bodies, veins, or minerals and tectonic deformation. This makes it difficult to apply the currently commonly used absolute dating methods in determining the absolute time of tectonic deformation in sedimentary basins.

[0030] To address the aforementioned issues, this application provides an embodiment for determining the absolute time of tectonic deformation in sedimentary basins, with the application scenario being sedimentary basins.

[0031] In this embodiment, the target structure is at least one of the following types: anticlines, synclines, and faults in sedimentary basins. Structures formed by the bending deformation of rocks under horizontal compressive force include anticlines and synclines in sedimentary basins. An anticline is an upward-arching fold of rock strata, and a syncline is a downward-concave fold of rock strata. Structures formed by the fracturing of rocks under stress are faults in sedimentary basins. A fault is a fracture structure in which rocks undergo significant displacement along the fracture surface.

[0032] In this embodiment, the mineral samples are zircon and / or apatite samples. To determine the mineral samples at at least two locations of the target structure, mineral samples at at least two locations of the target structure can be obtained by selecting different structural locations within the same structure that have significant differences in uplift or subsidence rates.

[0033] In practical applications, based on the actual geological conditions and geological data of the study area, professional geological sampling tools can be used to collect different types of minerals in the study area, resulting in a large number of sampling samples. Then, mineral samples from at least two locations of the target structure can be determined from the sampling samples, namely zircon and / or apatite samples from at least two locations of anticlines, synclines, and faults in sedimentary basins.

[0034] Low-temperature thermochronology is a method for studying the thermal history of rocks on the Earth's surface under low-temperature conditions. It determines the cooling age and thermal evolution history of rocks by measuring the content of radioactive isotopes or cosmogenous nuclides in minerals.

[0035] By conducting low-temperature thermochronological analysis on various mineral samples, the thermal history of the mineral samples can be obtained, thereby inferring the time and rate of the target tectonic movement in the study area, determining the absolute time of tectonic deformation, and providing important evidence for studying the formation of mountains, the evolution of basins, and the activity of faults.

[0036] As an optional but not limited implementation, mineral samples are determined at at least two locations of the target structure, including steps A1-A2:

[0037] Step A1: If it is determined that a well exists in the target structure, then determine the elevation interval and / or depth interval.

[0038] Step A2: Based on elevation and / or depth intervals, continuously sample at least two of the following types of locations: hanging wall, footwall, drill core, and drill cuttings, to obtain mineral samples at each location.

[0039] In this embodiment, the elevation interval is the height difference between two adjacent elevation points in the vertical direction, and the depth interval is the distance between two adjacent depth points in the vertical direction.

[0040] It should be noted that when a well is present in the target structure, mineral samples can be obtained directly from deep underground. In practical applications, when a well is present in the target structure, continuous sampling can be performed at certain elevation and / or depth intervals at the location of the fault hanging wall, fault footwall, well core, and drill cuttings. The elevation and depth intervals are typically 50–100 meters or more, depending on the overall elevation and depth differences from the start to the end of the sampling well or outcrop profile.

[0041] As an optional but not limited implementation, determining mineral samples at at least two locations of the target structure further includes steps B1-B2:

[0042] Step B1: If it is determined that there is no drilling at the target structure, then determine the elevation interval.

[0043] Step B2: Based on the elevation interval, perform parallel structural strike sampling at at least two of the following types of locations: anticline core, anticline limb, syncline core, syncline limb, fault hanging wall, and fault footwall, to obtain mineral samples at each location.

[0044] It should be noted that this embodiment also considers the case where there is no well drilling in the target structure. When there is no well drilling in the target structure, sampling can be carried out over a larger area without being limited by the location of the well.

[0045] Therefore, in practical applications, when there is no drilling in the target structure, parallel structural strike sampling can be carried out at certain elevation intervals in the outcrop area where there is no drilling, on the outer side of the anticline core and flanks, or even in the area close to the syncline core and flanks, or on the hanging wall and footwall of the fault adjacent to the fault.

[0046] Parallel strike sampling involves sampling the same set of strata along the structural strike direction. When drilling is not required, parallel structural strike sampling effectively ensures the accuracy and reliability of elevation differences, reduces errors caused by significant differences in geological conditions, and guarantees the uniformity of sampling.

[0047] As an optional but not limited approach, low-temperature thermochronological analysis is performed on each mineral sample, including steps C1-C2:

[0048] Step C1: Perform fission track analysis on each mineral sample to obtain the fission track of each mineral sample, and perform uranium-thorium-helium analysis on each mineral sample to obtain the uranium-thorium-helium age of each mineral sample.

[0049] Step C2: Based on the fission track and uranium-thorium-helium age of each mineral sample, perform low-temperature thermochronological analysis to obtain the results of the low-temperature thermochronological analysis of each mineral sample.

[0050] In this embodiment, the low-temperature thermochronological analysis includes fission track analysis and uranium-thorium-helium analysis ((U-Th) / He dating analysis).

[0051] The basic principle of fission track analysis is that certain heavy elements, such as uranium-238, spontaneously undergo fission, producing two fission fragments. These fragments leave damaging tracks, or fission tracks, as they travel through minerals or rocks. Over time, these fission tracks accumulate. By measuring the density and length of these tracks in minerals or rocks, the time elapsed can be determined. When minerals or rocks are heated, the fission tracks undergo annealing, meaning the track density decreases or the length shortens. Therefore, fission track analysis can reflect the thermal history of a mineral sample or rock.

[0052] The basic principle of uranium-thorium-helium analysis is that uranium (U) and thorium (Th) in minerals undergo radioactive decay to produce helium (He). Over time, helium accumulates in the mineral. By measuring the helium content, as well as the uranium and thorium content, the (U-Th) / He age of the mineral can be calculated. The (U-Th) / He age reflects the time elapsed since the mineral sample formed or was last thermally reset.

[0053] Specifically, this embodiment performs low-temperature thermochronological analysis on each mineral sample, including zircon fission track analysis, zircon (U-Th) / He analysis, apatite fission track analysis, and apatite (U-Th) / He analysis, thereby obtaining zircon fission track, zircon (U-Th) / He age, apatite fission track, and apatite (U-Th) / He age.

[0054] Furthermore, based on zircon fission track, zircon (U-Th) / He age, apatite fission track, and apatite (U-Th) / He age, low-temperature thermochronological analysis was performed to obtain the results of low-temperature thermochronological analysis for each mineral sample.

[0055] In this embodiment, a systematic low-temperature thermochronological analysis is conducted by performing zircon fission track analysis, zircon (U-Th) / He analysis, apatite fission track analysis, and apatite (U-Th) / He analysis. This generates a series of mutually verifiable experimental data, avoiding the ambiguity of single experimental data and ensuring the accuracy and effectiveness of the low-temperature thermochronological analysis results.

[0056] S120. Based on the low-temperature thermochronological analysis results of each mineral sample, thermal history simulation is performed to obtain the thermal history simulation results of each location of the target structure.

[0057] In this embodiment, thermal history simulation is a technique that reconstructs the temperature change history of a geological body through various methods. In this embodiment, the thermal history simulation of the low-temperature thermochronological analysis results of various mineral samples uses unified simulation software, simulation methods, and simulation procedures.

[0058] Specifically, thermal history simulations are performed based on the low-temperature thermochronological analysis results of each mineral sample. This includes conducting unified thermal history simulations of zircon fission tracks, zircon (U-Th) / He ages, apatite fission tracks, and apatite (U-Th) / He ages from the low-temperature thermochronological analysis results, thereby obtaining thermal history simulation results for each location of the target structure.

[0059] Specifically, the steps of thermal history simulation include establishing mathematical and physical models. The mathematical model typically includes equations for heat conduction, convection, and radiation, while the physical model includes the shape, structure, and boundary conditions of the geological body. Further, parameters in the thermal history simulation model are determined, such as the thermal conductivity, thermal diffusivity, radioactive element content, and heat flux of the rock. Next, numerical calculations or inversion methods are used to calculate the thermal history simulation model, obtaining the temperature distribution and thermal history of the target geological structure at different periods. Finally, the thermal history simulation results are analyzed and interpreted to determine the thermal history and evolution process at various locations of the target geological structure. Result analysis may include plotting temperature-time curves, heat flux-time curves, and thermal history profiles, as well as comparing and verifying the results with other geological data and research findings.

[0060] S130. Compare the thermal history simulation results at various locations of the target structure to obtain the absolute time of structural deformation of the target structure.

[0061] In this embodiment, the thermal history simulation results of each location of the target structure are compared, including the thermal history simulation results and temperature change rate differences of mineral samples at different structural locations within the same structure. Based on the significant differences in thermal history simulation results and temperature change rates, the absolute time of structural deformation of faults, anticlines, and synclines can be determined.

[0062] In practical applications, the absolute time of target structure deformation can be visualized on the terminal interface using a timeline. This method provides an intuitive understanding of the initial, deformation, and later stages of the target structure's changes. The geographical location of the target structure can also be marked on a map, using different symbols, colors, or icons to represent different deformation times and recording the deformation time of the target structure. The visualization of the absolute time of target structure deformation in this embodiment is not limited.

[0063] The technical solution of this invention obtains mineral samples from different locations of the target structure through differential sampling, and then determines the absolute time of tectonic deformation of the target structure based on low-temperature thermochronological analysis, thermal history simulation analysis, and differential comparison analysis. This solves the problem that the absolute time of tectonic deformation in existing sedimentary basins is difficult to determine accurately, and realizes the determination of the absolute time of tectonic deformation in sedimentary basins.

[0064] Example 2

[0065] Figure 2This is a flowchart illustrating a method for determining the absolute time of tectonic deformation according to Embodiment 2 of the present invention. This embodiment is applicable to determining the absolute time of tectonic deformation in sedimentary basins. The method can be executed by a device for determining the absolute time of tectonic deformation, which can be implemented in hardware and / or software and can be configured in any electronic device with network communication and computing capabilities. This embodiment of the present invention further specifies the methods described above. For example... Figure 2 As shown, the method includes:

[0066] S210. Identify mineral samples at at least two locations of the target structure and perform low-temperature thermochronological analysis on each mineral sample.

[0067] S220. Determine the temperature conditions, inversion constraint path, and inversion range limits for the thermal history simulation.

[0068] In this embodiment, determining the temperature conditions for thermal history simulation includes determining both paleotemperatures and present-day temperatures. These temperature conditions are continuous over time, and gaps in the temperature data can be filled using mathematical methods such as interpolation and extrapolation. Furthermore, the temperature conditions are dynamic and need to be adjusted according to different stages of the thermal history simulation and geological events.

[0069] The inversion constraints for thermal history simulation include determining geological time constraints, geophysical constraints, and petrological constraints. Geological time constraints utilize radiometric dating to determine the formation age of rocks and the chronological sequence of geological events; age data provides temporal constraints for thermal history simulation, limiting the scope of the thermal history. Combining stratigraphic correlation and the distribution of paleontological fossils determines the relative ages of different strata and the division of geological historical periods, providing a more detailed time frame for thermal history simulation.

[0070] Furthermore, geophysical constraints can utilize geophysical data such as seismic wave velocity, gravity anomalies, and geomagnetic anomalies to infer the physical properties of subsurface structures and rocks, providing spatial constraints for thermal history simulations and limiting the possible range of thermal histories. For example, changes in seismic wave velocity can reflect differences in rock density and temperature, thus providing clues about the distribution of subsurface temperatures in thermal history simulations.

[0071] Furthermore, petrological constraints can infer the temperature and pressure conditions experienced by rocks based on petrological information such as mineral composition, structural characteristics, and degree of metamorphism. This provides petrological constraints for thermal history simulations, limiting the possible range of thermal history. For example, the mineral assemblage in metamorphic rocks can indicate specific temperature and pressure ranges, thus providing clues about the thermal history of rocks for thermal history simulations.

[0072] Among them, determining the inversion range limitations of thermal history simulation includes spatial range limitations, temperature range limitations, and parameter range limitations.

[0073] Specifically, when determining the spatial scope, factors such as the integrity of the target structure and the extent of heat transfer influence should be considered to ensure that the results of the thermal history simulation can reflect the overall thermal history of the target structure in the study area. The boundaries of the study area can be determined using data such as geological maps and geophysical profiles, and these can be used as spatial constraints for the thermal history simulation. This embodiment does not impose specific limitations.

[0074] Based on the determined paleotemperature and present-day temperature, and the constraints of geochronology, geophysics, and petrology, the temperature range for thermal history simulation is determined. In practical applications, a reasonable temperature range can be determined through methods such as sensitivity analysis and parameter optimization to ensure that the results of thermal history simulation are within a reasonable temperature range. This embodiment does not impose specific limitations.

[0075] Thermal history simulation involves multiple parameters, such as the thermal conductivity of rocks, thermal diffusivity, and radioactive element content. In practical applications, reasonable ranges for these parameters can be determined through laboratory measurements, empirical formula calculations, and literature reviews, and these ranges serve as constraints for the thermal history simulation. When determining the parameter ranges, the uncertainties and errors of the parameters must be considered to ensure that the simulation results are within a reasonable parameter range. This embodiment does not impose specific limitations.

[0076] By determining and setting reasonable temperature conditions, inversion constraint paths, and inversion range limits, we can obtain the most accurate and reasonable thermal history simulation results possible.

[0077] S230. Based on temperature conditions, inversion constraint paths, and inversion range limitations, time-temperature path inversion is performed on the low-temperature thermochronological analysis results of each mineral sample to obtain the temperature change rate at each location of the target structure over time.

[0078] In this embodiment, during the time-temperature path inversion process, the inversion model can be used to solve for the time-temperature path of the low-temperature thermochronological analysis results of each mineral sample. Commonly used inversion models include inversion models based on fission track analysis and (U-Th) / He inversion models.

[0079] During the inversion process, the inversion model continuously adjusts the time-temperature path based on the input data (i.e., the low-temperature thermochronological analysis results of each mineral sample) and constraints (i.e., temperature conditions, inversion constraint path, and inversion range limitations), which can minimize the error function.

[0080] Next, by calculating the slope of the time-temperature path, the rate of temperature change at each location of the target structure can be determined over time.

[0081] S240. Compare the differences in the rate of temperature change at each location of the target structure over time, and take the time when the rate of temperature change at each location shows a decoupling difference as the absolute time of structural deformation of the target structure.

[0082] In this embodiment, it should be noted that the decoupling difference in temperature change rate is a general characteristic of the similarities and differences between the structure before and after deformation and during the deformation period.

[0083] Before tectonic deformation, the mineral samples were initially deposited in similar locations and were in relatively stable and similar geological periods, without strong tectonic disturbances. Heat transfer was mainly controlled by the regional geological background. Because these mineral samples were deposited in close proximity, the geological processes and heat transfer conditions they experienced were also quite similar. Therefore, before tectonic deformation, the temperature change rates at different locations within the target structure were largely consistent, meaning that the temperature change rates at different locations within the target structure were not decoupled.

[0084] During tectonic deformation, processes such as crustal movement, rock deformation, and displacement typically accompany these events, significantly impacting heat transfer. On one hand, tectonic movements can lead to rock uplift or subsidence, altering the depth and pressure environment of mineral samples. On the other hand, tectonic deformation can also trigger magmatic activity and faulting, bringing additional heat or altering heat transfer pathways. Because mineral samples at different locations are affected by tectonic deformation to varying degrees, their temperature change rates will differ significantly, exhibiting a decoupling effect. Therefore, during tectonic deformation, significant decoupling differences exist in the temperature change rates at different locations within the target structure.

[0085] After tectonic deformation ends, although crustal movement gradually stabilizes, the changes in geological structure and heat transfer conditions brought about by tectonic deformation may continue to affect the temperature changes of mineral samples. Therefore, after tectonic deformation, the rate of temperature change at different locations within the target structure may exhibit persistent decoupled differences.

[0086] In this embodiment, the decoupling difference in temperature change rate indicates that the curves of temperature change rate at various locations of the target structure over time show a significant temperature rise or subsidence at a certain key time, and the significant decoupling difference in temperature change rate indicates the formation time of the deformation of faults, anticlines, and synclines.

[0087] Therefore, by comparing the differences in the rate of temperature change at each location of the target structure over time, the time at which the rate of temperature change at each location decouples can be used as the absolute time of structural deformation of the target structure, thus ensuring the accuracy of determining the absolute time of structural deformation of the target structure.

[0088] The technical solution of this invention obtains mineral samples from different locations of the target structure through differential sampling. Based on the low-temperature thermochronological analysis results of the mineral samples and preset temperature conditions, inversion constraint paths, and inversion range limitations, thermal history simulation analysis is performed to obtain the temperature change rate of each location of the target structure over time. Based on the difference comparison analysis of the temperature change rate of each location of the target structure over time, the absolute time of tectonic deformation of the target structure is determined. This solves the problem that the absolute time of tectonic deformation in existing sedimentary basins is difficult to determine accurately, and realizes the determination of the absolute time of tectonic deformation in sedimentary basins.

[0089] Example 3

[0090] Figure 3 This is a schematic diagram of a device for determining the absolute time of tectonic deformation according to Embodiment 3 of the present invention. This embodiment is applicable to the determination of the absolute time of tectonic deformation in sedimentary basins. The device for determining the absolute time of tectonic deformation can be implemented in hardware and / or software, and can be configured in any electronic device with network communication and computing capabilities. Figure 3 As shown, the device includes:

[0091] The low-temperature thermochronology analysis module 310 is used to identify mineral samples at at least two locations of the target structure and perform low-temperature thermochronology analysis on each mineral sample.

[0092] The thermal history simulation module 320 is used to perform thermal history simulation based on the low-temperature thermochronological analysis results of each mineral sample, and obtain the thermal history simulation results of each location of the target structure.

[0093] The difference comparison module 330 is used to compare the thermal history simulation results of each location of the target structure to obtain the absolute time of structural deformation of the target structure.

[0094] Optional, the low-temperature thermochronology analysis module 310 includes:

[0095] If it is determined that a well exists in the target structure, then determine the elevation interval and / or depth interval;

[0096] Based on elevation and / or depth intervals, continuous sampling is performed at at least two of the following types of locations: hanging wall, footwall, drill core, and drill cuttings, to obtain mineral samples at each location.

[0097] Optional, the low-temperature thermochronology analysis module 310 includes:

[0098] If it is determined that there is no drilling activity at the target structure, then the elevation interval is determined;

[0099] Based on elevation intervals, parallel structural strike sampling is performed at at least two of the following types of locations: anticline core, anticline limb, syncline core, syncline limb, fault hanging wall, and fault footwall, to obtain mineral samples at each location.

[0100] Optional, the low-temperature thermochronology analysis module 310 includes:

[0101] Fission track analysis was performed on each mineral sample to obtain the fission track of each mineral sample, and uranium-thorium-helium analysis was performed on each mineral sample to obtain the uranium-thorium-helium age of each mineral sample.

[0102] Based on the fission tracks and uranium-thorium-helium ages of each mineral sample, low-temperature thermochronological analysis was performed to obtain the results of the low-temperature thermochronological analysis of each mineral sample.

[0103] Optionally, the thermal history simulation module 320 includes:

[0104] The thermal history simulation condition determination unit is used to determine the temperature conditions, inversion constraint paths, and inversion range limitations for thermal history simulation.

[0105] The thermal history simulation result determination unit is used to perform time-temperature path inversion on the low-temperature thermochronological analysis results of each mineral sample based on temperature conditions, inversion constraint paths, and inversion range limitations, so as to obtain the temperature change rate at each location of the target structure over time.

[0106] Optionally, the difference comparison module 330 includes:

[0107] The temperature change rate at each location of the target structure is compared over time, and the time at which the temperature change rate at each location shows a decoupling difference is taken as the absolute time of structural deformation of the target structure.

[0108] The technical solution of this application obtains mineral samples from different locations of the target structure through differential sampling, and then determines the absolute time of tectonic deformation of the target structure based on low-temperature thermochronological analysis, thermal history simulation analysis, and differential comparison analysis. This solves the problem that the absolute time of tectonic deformation in existing sedimentary basins is difficult to determine accurately, and realizes a method for determining the absolute time of tectonic deformation in sedimentary basins.

[0109] The device for determining the absolute time of structural deformation provided in this embodiment of the invention can execute the method for determining the absolute time of structural deformation provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of executing the method.

[0110] Example 4

[0111] Figure 4A schematic diagram of an electronic device 10 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0112] like Figure 4 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0113] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0114] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as constructing methods for determining the absolute time of deformation.

[0115] In some embodiments, the method for determining the absolute time of construction deformation can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the method for determining the absolute time of construction deformation described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the method for determining the absolute time of construction deformation by any other suitable means (e.g., by means of firmware).

[0116] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0117] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0118] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0119] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0120] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0121] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0122] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0123] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for determining the absolute time of structural deformation, characterized in that, include: Identify mineral samples at at least two locations within the target structure and perform low-temperature thermochronological analysis on each mineral sample. Thermal history simulations were performed based on the low-temperature thermochronological analysis results of each mineral sample to obtain the thermal history simulation results of each location of the target structure. By comparing the thermal history simulation results at various locations of the target structure, the absolute time of structural deformation of the target structure is obtained.

2. The method according to claim 1, characterized in that, The target structure is at least one of the following: anticlines, synclines, and faults in sedimentary basins; Identify mineral samples at at least two locations within the target structure, including: If it is determined that a well exists in the target structure, then determine the elevation interval and / or depth interval; Based on elevation and / or depth intervals, continuous sampling is performed at at least two of the following types of locations: hanging wall, footwall, drill core, and drill cuttings, to obtain mineral samples at each location.

3. The method according to claim 2, characterized in that, Determining mineral samples at at least two locations within the target structure also includes: If it is determined that there is no drilling activity at the target structure, then the elevation interval is determined; Based on elevation intervals, parallel structural strike sampling is performed at at least two of the following types of locations: anticline core, anticline limb, syncline core, syncline limb, fault hanging wall, and fault footwall, to obtain mineral samples at each location.

4. The method according to claim 1, characterized in that, The mineral sample is a zircon and / or apatite sample; Low-temperature thermochronological analysis was performed on each mineral sample, including: Fission track analysis was performed on each mineral sample to obtain the fission track of each mineral sample, and uranium-thorium-helium analysis was performed on each mineral sample to obtain the uranium-thorium-helium age of each mineral sample. Based on the fission tracks and uranium-thorium-helium ages of each mineral sample, low-temperature thermochronological analysis was performed to obtain the results of the low-temperature thermochronological analysis of each mineral sample.

5. The method according to claim 1, characterized in that, Thermal history simulations were performed based on the low-temperature thermochronological analysis results of each mineral sample to obtain the thermal history simulation results for each location of the target structure, including: Determine the temperature conditions, inversion constraint paths, and inversion range limitations for the thermal history simulation; Based on temperature conditions, inversion constraint paths, and inversion range limitations, time-temperature path inversion was performed on the low-temperature thermochronological analysis results of each mineral sample to obtain the temperature change rate at each location of the target structure over time.

6. The method according to claim 5, characterized in that, By comparing the thermal history simulation results at various locations of the target structure, the absolute time of structural deformation of the target structure is obtained, including: The temperature change rate at each location of the target structure is compared over time, and the time at which the temperature change rate at each location shows a decoupling difference is taken as the absolute time of structural deformation of the target structure.

7. A device for determining the absolute time of structural deformation, characterized in that, include: The low-temperature thermochronology analysis module is used to identify mineral samples at at least two locations of the target structure and perform low-temperature thermochronology analysis on each mineral sample. The thermal history simulation module is used to perform thermal history simulation based on the low-temperature thermochronological analysis results of each mineral sample, and obtain the thermal history simulation results of each location of the target structure. The difference comparison module is used to compare the thermal history simulation results of various locations of the target structure to obtain the absolute time of structural deformation of the target structure.

8. The apparatus according to claim 7, characterized in that, The thermal history simulation module is used to perform thermal history simulations based on the low-temperature thermochronological analysis results of each mineral sample, obtaining the thermal history simulation results for each location of the target structure, including: The thermal history simulation condition determination unit is used to determine the temperature conditions, inversion constraint paths, and inversion range limitations for thermal history simulation. The thermal history simulation result determination unit is used to perform time-temperature path inversion on the low-temperature thermochronological analysis results of each mineral sample based on temperature conditions, inversion constraint paths, and inversion range limitations, so as to obtain the temperature change rate at each location of the target structure over time.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the method for determining the absolute time of structural deformation as described in any one of claims 1-6.

10. A storage medium for storing computer-executable instructions, characterized in that, The computer-executable instructions, when executed by a computer processor, are used to perform the method for determining the absolute time of structural deformation as described in any one of claims 1-6.

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