Inland mountain front deformation zone structure modeling method and device and electronic equipment

Abstract

The invention relates to the technical field of geologic structure modeling, and discloses an inland mountain front deformation zone structure modeling method and device and electronic equipment. The method comprises the following steps: identifying and explaining a trunk fracture based on a typical modeling seismic section of a selected research area; determining a slip layer in the modeling seismic section; dividing the modeling seismic section into a plurality of analysis units in the transverse direction and the longitudinal direction; performing independent construction analysis on each analysis unit, and obtaining an interpretation model; and combining the interpretation models of the analysis units to form a complete initial construction model of the modeling seismic section. According to the technical scheme provided by the embodiment of the invention, the complex structure of the mountain-front zone is simplified by taking transverse blocking of the trunk fracture and longitudinal layering of the slip layer as the basic principle, the inland mountain-front deformation zone structure model can be reasonably constructed, geologic model guidance is provided for reprocessing and explaining of seismic data of the mountain-front zone, and the construction efficiency of the mountain-front zone is improved. And a technical method support is provided for target implementation and description in the field of mountain front zone risk exploration.

Description

Technical Field

[0001] The present invention relates to the technical field of geological structure modeling, and in particular to a method, device and electronic equipment for modeling a structure of an inland piedmont deformation zone. Background Art

[0002] The piedmont zone has always been an important front for my country's oil and gas exploration. In the past decade, after multiple rounds of geological-seismic technology collaborative research and exploration, my country has discovered a number of gas fields or high-yield wells in the piedmont zone, including the Kelasu gas field, Shuangyushi, and Gaotan 1, demonstrating good exploration potential.

[0003] Due to the complex structural deformation of the piedmont belt itself and the poor quality of seismic data, structural modeling is an effective means to reasonably interpret the structure and implement the underground structural form. At present, the domestic structural modeling method is mainly guided by the fault-related fold theory, and the modeling section is analyzed by the axial plane analysis method to construct a geological model. However, the traditional methods have the following problems in modeling the inland piedmont deformation zone in my country: ① The fault-related fold theory is based on the research on plate-margin thrust belts abroad, and is mainly applicable to plate-margin thrust belts characterized by thin belts, and its applicability is limited; among them, the piedmont deformation zones in central and western my country are mostly intraplate types, and transition zones characterized by basement involvement are generally developed [Xu Xuhui, Fang Chengming, Liu Jinlian, et al. Structural deformation zoning pattern and oil and gas in the piedmont of central and western China. Experimental Petroleum Geology, 2019, 41(6)]; ② Traditional modeling methods are to analyze and construct models for the modeling seismic profile as a whole. However, the deep basement materials in the inland piedmont belt in my country are generally involved, and the strata change rapidly in the vertical and lateral directions, making it difficult to analyze from a holistic perspective. Summary of the invention

[0004] The present application provides a method, device and electronic equipment for structural modeling of an intracontinental piedmont deformation zone, so as to solve the above-mentioned technical problem that the existing technology is difficult to analyze the intracontinental piedmont deformation zone in central and western my country, which is characterized by "universal involvement of the basement and rapid vertical and lateral changes in the strata".

[0005] According to one aspect of the present application, an embodiment provides a method for modeling a tectonic model of an intracontinental piedmont deformation zone, comprising:

[0006] Based on the selection of typical modeling seismic sections in the study area, the main faults are identified and interpreted. The modeling seismic sections are perpendicular or nearly perpendicular to the structural trend of the study area. The main faults are large faults that vertically cut through multiple sets of regional slip layers.

[0007] Determine the detachment layer in the modeled seismic profile;

[0008] Divide the modeled seismic section into several analytical units in the horizontal and vertical directions, wherein the modeled seismic section is divided into several blocks in the horizontal direction with the main fault as the boundary, and is divided into several layers in the vertical direction with the slip layer as the boundary;

[0009] Perform separate structural analysis on each parsing unit and obtain an explanation model;

[0010] The interpretation models of each analytical unit are combined to form a complete initial structural model of the modeled seismic profile.

[0011] In one embodiment, the identification and interpretation of the trunk fracture is achieved by any one of the following methods or a combination of two methods:

[0012] First, the main faults are identified and interpreted based on the characteristics of the reflection wave common axis misalignment, disappearance, and sudden change of attitude in the modeled seismic profile;

[0013] Secondly, field geological observations are carried out along the modeling survey line. Based on the observations of surface structural points and geological maps, the development location and combination pattern of the main faults are clarified, and the main faults are interpreted on the modeling seismic profile based on this constraint.

[0014] In one embodiment, determining the detachment layer in the modeled seismic profile includes:

[0015] Based on the stratigraphic data, field outcrop observations and drilling data in the study area, the regionally distributed mudstone and gypsum salt layers in the study area were determined;

[0016] The rock layer corresponding to the mudstone layer or gypsum salt layer is the detachment layer, and the basement surface serves as the regional detachment layer interface.

[0017] In one embodiment, the intracontinental piedmont deformation zone structural modeling method further includes:

[0018] The modeled seismic profiles were used as constraints for the initial structural model to guide the reprocessing of seismic data in the piedmont zone of the study area;

[0019] Based on the reprocessing results of the seismic data in the piedmont zone, the initial structural model is improved in turn;

[0020] According to the tectonic model formed by improving the initial tectonic model, the modeled seismic profiles are repeatedly used as constraints of the initial tectonic model to guide the steps of reprocessing the seismic data in the piedmont zone of the study area, so as to achieve mutual iterative optimization between geology and geophysics, continuously improve the constructed tectonic model and obtain a relatively complete tectonic model.

[0021] In one embodiment, the intracontinental piedmont deformation zone structural modeling method further includes:

[0022] Based on a relatively complete structural model, a physical simulation model and a numerical simulation model are designed, and dual tests of physical simulation and numerical simulation are carried out to finally obtain a reasonable structural model.

[0023] In one embodiment, a corresponding physical simulation model is designed based on the obtained strain rate, time and geometric similarity scaling factors for physical simulation; and / or,

[0024] Based on the elastic modulus, shear modulus, Poisson's ratio, and cohesion parameters obtained for numerical simulation, the corresponding numerical simulation model is designed.

[0025] According to one aspect of the present application, an embodiment provides a device for modeling a structure of an intracontinental piedmont deformation zone, comprising:

[0026] A processing module is used to identify and interpret the main fault based on the typical modeling seismic profiles selected in the study area, where the modeling seismic profiles are perpendicular or nearly perpendicular to the structural trend of the study area, and the main fault is a large fault that cuts through multiple sets of regional detachment layers vertically;

[0027] a determination module for determining the detachment layer in the modeled seismic profile;

[0028] A division module is used to divide the modeled seismic section into a number of analytical units in the horizontal and vertical directions, wherein the modeled seismic section is divided into a number of blocks in the horizontal direction with the main fault as the boundary, and the modeled seismic section is divided into a number of layers in the vertical direction with the slip layer as the boundary;

[0029] A structural analysis module, used to perform a separate structural analysis on each analysis unit and obtain an explanation model; and

[0030] The combination module is used to combine the interpretation models of each analytical unit to form a complete initial structural model of the modeled seismic section.

[0031] In one embodiment, the intracontinental piedmont deformation zone structural modeling device further comprises:

[0032] The reprocessing module is used to use the modeled seismic profile as the initial structural model constraint to guide the reprocessing of seismic data in the piedmont zone of the study area;

[0033] Improvement module, used to improve the initial structural model based on the reprocessing results of the piedmont seismic data; and

[0034] The improvement module is used to repeatedly use the modeled seismic profile as the initial structural model constraint based on the structural model formed by the improved initial structural model, guide the steps of reprocessing the seismic data in the piedmont belt of the study area, realize the mutual iterative optimization between geology and geophysics, continuously improve the constructed structural model and obtain a relatively complete structural model.

[0035] In one embodiment, the intracontinental piedmont deformation zone structural modeling device further comprises:

[0036] The verification module is used to design physical simulation models and numerical simulation models based on a relatively complete structural model, carry out dual verification of physical simulation and numerical simulation, and finally obtain a reasonable structural model.

[0037] According to one aspect of the present application, an embodiment provides an electronic device, including:

[0038] Memory; and

[0039] processor;

[0040] Wherein, the memory is used to store one or more computer instructions; the one or more computer instructions are executed by the processor to implement the intracontinental piedmont deformation zone structural modeling method as described in any one of the above.

[0041] According to one aspect of the present application, an embodiment provides a readable storage medium having computer instructions stored thereon; wherein, when the computer instructions are executed by a processor, a method for structural modeling of an intracontinental piedmont deformation zone as described in any one of the above items is implemented.

[0042] The technical solution of the above-mentioned embodiment of the present application is based on the basic principle of "horizontal block division of main faults and vertical stratification of detachment layers", and the structural modeling section is comprehensively divided into several analytical units. After a separate structural analysis of each unit, all analytical units are combined into a complete structural model. Through the structural modeling method of the intracontinental piedmont deformation zone, the complex structure of the piedmont zone is simplified, and a structural model of the intracontinental piedmont deformation zone can be reasonably constructed, providing geological model guidance for the reprocessing and interpretation of seismic data in the piedmont zone, and also providing technical method support for the implementation and characterization of goals in the field of risk exploration in the piedmont zone.

[0043] The technical solution of the present application is particularly suitable for modeling the inland piedmont deformation zone in central and western my country, which is characterized by "universal involvement of basement materials and rapid vertical and lateral changes in strata". BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a flow chart of a method for modeling a structure of an inland piedmont deformation zone in an embodiment;

[0045] Figure 2 is a flowchart of a method for modeling a structure of an inland piedmont deformation zone in an embodiment;

[0046] Figure 3 is a schematic diagram of the analytical unit division and structural analytical model of a frontal deformation zone in the central and western regions in an embodiment;

[0047] Figure 4The present invention is a schematic diagram of the structure of an inland piedmont deformation zone structural modeling device in an embodiment. DETAILED DESCRIPTION

[0048] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0049] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0050] It should be noted that the terms "first", "second" etc. in the present application are used to distinguish similar objects, and need not be used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged in appropriate circumstances, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, the process, method, system, product or equipment comprising a series of steps or units need not be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0051] It should be understood that when an element (such as a layer, film, region, or substrate) is described as being "on" another element, the element may be directly on the other element, or there may be an intermediate element. Moreover, in this application, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element, or "connected" to the other element through a third element.

[0052] Embodiment 1

[0053] Please refer to Figure 1 An embodiment provides a method for modeling a piedmont deformation zone structure in an intracontinental area, comprising the following steps:

[0054] S1. Based on the selection of typical modeling seismic profiles in the study area, identify and interpret the main faults, where the modeling seismic profiles are perpendicular or nearly perpendicular to the structural trend of the study area. The main faults are large faults that cut through multiple sets of regional slip layers vertically.

[0055] S2. Determine the detachment layer in the modeled seismic profile.

[0056] S3. Divide the modeled seismic profile into several analytical units in the horizontal and vertical directions, wherein the modeled seismic profile is divided into several blocks in the horizontal direction with the main fault as the boundary, and is divided into several layers in the vertical direction with the slip layer as the boundary.

[0057] S4. Perform separate structural analysis on each parsing unit and obtain the explanation model.

[0058] S5. Combine the interpretation models of each analytical unit to form a complete initial structural model of the modeled seismic section.

[0059] Furthermore, the following steps can be set:

[0060] S6. Use the modeled seismic profile as an initial structural model constraint to guide the reprocessing of seismic data in the piedmont zone of the study area.

[0061] S7. Based on the reprocessing results of the seismic data in the piedmont zone, the initial structural model is improved in turn.

[0062] S8. Based on the structural model formed by improving the initial structural model, repeat step S6 to achieve mutual iterative optimization between geology and geophysics, continuously improve the constructed structural model and obtain a relatively complete structural model.

[0063] S9. Based on a relatively complete structural model, a physical simulation model and a numerical simulation model are designed, and dual tests of physical simulation and numerical simulation are carried out to finally obtain a reasonable structural model; among them, based on the obtained strain rate, time and geometric similarity proportional factors used for physical simulation, the corresponding physical simulation model is designed; based on the obtained elastic modulus, shear modulus, Poisson's ratio, and cohesion parameters used for numerical simulation, the corresponding numerical simulation model is designed.

[0064] In one embodiment, the identification and interpretation of the trunk fracture in step S1 is achieved by any one of the following methods or a combination of two methods:

[0065] First, the main faults are identified and interpreted based on the characteristics of the reflection wave common axis misalignment, disappearance, and sudden change of attitude in the modeled seismic profile;

[0066] Secondly, field geological observations are carried out along the modeling survey line. Based on the observations of surface structural points and geological maps, the development location and combination pattern of the main faults are clarified, and the main faults are interpreted on the modeling seismic profile based on this constraint.

[0067] In one embodiment, step S2 includes the following steps:

[0068] S21. Determine the regionally distributed mudstone and gypsum-salt rock layers developed in the study area based on stratigraphic data, field outcrop observations and drilling data;

[0069] S22. The rock layer corresponding to the mudstone layer or gypsum salt rock layer is the detachment layer, and the basement surface serves as the regional detachment layer interface.

[0070] Among them, the key to the structural modeling method of the intracontinental piedmont deformation zone of the present application is to divide the structural modeling section into several analytical units based on the basic principle of "horizontal division of the main fault and vertical stratification of the slip layer". After performing a separate structural analysis on each unit, all the analytical units are combined into a complete structural model.

[0071] The structural modeling method of the intracontinental piedmont deformation zone in this application is a structural modeling method that divides the analytical units and analyzes them one by one based on the principle of "horizontal block division of the main fault and vertical stratification of the slip layer". Through this structural modeling method of the intracontinental piedmont deformation zone, the complex structure can be simplified, and a structural model of the intracontinental piedmont deformation zone can be reasonably constructed, providing geological model guidance for the reprocessing and interpretation of seismic data in the piedmont zone, and also providing technical method support for the implementation and characterization of goals in the field of risk exploration in the piedmont zone.

[0072] Embodiment 2

[0073] Please refer to Figure 2 An embodiment provides a method for modeling the structure of an intracontinental piedmont deformation zone. The following will explain the technical solution of the present application with the ideas of the inventor, which will help those skilled in the art to be familiar with the ideas of the present application. Among them, some technical points are explained in detail, so that those skilled in the art can fully understand the technical solution of the present application.

[0074] Specifically, the method for modeling the structure of the intracontinental piedmont deformation zone includes the following steps:

[0075] (1) Select a typical seismic profile for structural modeling in the study area, where the profile is required to be perpendicular or nearly perpendicular to the structural trend of the study area.

[0076] (2) Identify and interpret the main faults on the modeled seismic profile.

[0077] This can be achieved in the following two ways or by combining the two ways:

[0078] ① Identify and interpret the main fault based on the characteristics of reflection wave co-axial dislocation, disappearance, and sudden change in occurrence in the modeled profile;

[0079] ② Carry out systematic field geological observations along the modeling survey line, and clarify the development location and combination style of the main faults based on surface structural point observations and geological maps, and use this as a constraint to interpret the main faults on the modeling section.

[0080] It should be noted that in this application, the main fault refers to a large fault that can cut through multiple sets of regional slip layers in the longitudinal direction, rather than those faults developed between layers.

[0081] (3) Determine the slip layer in the modeling section.

[0082] Based on the stratigraphic data, field outcrop observations and drilling data in the study area, the regionally distributed mudstone layers and gypsum-salt rock layers developed in the study area were determined. The rock layer corresponding to the mudstone layer or gypsum-salt rock layer is the detachment layer; in addition, the basement surface is also used as the regional detachment layer.

[0083] (4) Divide the modeling section into several analytical units.

[0084] The modeling section can be divided into several blocks in the horizontal direction using the main fault determined in step (2) as the boundary, and the modeling section can be divided into several layers in the vertical direction using the slip layer determined in step (3) as the boundary. The modeling section can be divided into several analytical units by combining the horizontal and vertical directions.

[0085] (5) Perform separate structural analysis on each parsing unit obtained in step (4) to obtain an explanation model for each parsing unit.

[0086] (6) The models of the individual analytical units obtained in step (5) are combined together to form an initial structural model with a complete modeling section.

[0087] (7) The modeling profile obtained in step (6) is used as the initial structural model constraint to guide the reprocessing of seismic data in the piedmont zone of the study area.

[0088] (8) Based on the seismic data reprocessing results obtained in step (7), the initial structural model is improved in turn. Based on the improved structural model, step (7) is repeated to achieve iterative optimization between geology and geophysics, and to continuously improve the constructed structural model.

[0089] (9) Based on the relatively complete structural model obtained in step (8), obtain the similarity proportional factors of strain rate, time and geometry for physical simulation, as well as parameters such as elastic modulus, shear modulus, Poisson's ratio, cohesion and so on for numerical simulation. Based on this, design the corresponding physical simulation and numerical simulation models, carry out dual physical and numerical simulation tests, and finally obtain a reasonable structural model.

[0090] The structural modeling method of the intracontinental piedmont deformation zone of the present application divides the modeling object of the complex deformation of the intracontinental piedmont into multiple secondary modeling units with relatively simple deformation through the division principle of "horizontal block division of the main fault and vertical stratification of the slip layer" and then analyzes them one by one. It can construct a geological model more reasonably, is more targeted, and is more suitable for the modeling of the intracontinental piedmont deformation zone in central and western my country, which is characterized by "universal involvement of basement materials and rapid vertical and horizontal changes in strata".

[0091] Embodiment 3

[0092] Please refer to Figure 2 , Figure 3 An embodiment provides a method for modeling the structure of an intracontinental piedmont deformation zone, which is described below through a case study to facilitate further understanding of the technical solution.

[0093] The structural modeling method of the intracontinental piedmont deformation zone in this application is aimed at the problem that the traditional modeling method is difficult to apply to the modeling of the intracontinental piedmont deformation zone in central and western my country, which is characterized by "universal involvement of basement materials and rapid vertical and horizontal changes in strata". A structural modeling method is proposed that divides the analysis units and analyzes them one by one based on the principle of "horizontal block division of main faults and vertical stratification of slip layers". The specific process is as follows:

[0094] (1) Select typical seismic profiles for modeling.

[0095] (2) The main faults can be identified and interpreted based on the characteristics of the reflection wave co-axial misalignment, disappearance, and sudden change in attitude in the modeled section. Alternatively, systematic field geological observations can be carried out along the modeled survey line. Based on surface structural point observations and geological maps, the development location and combination pattern of the main faults can be clarified, and the main faults can be interpreted on the modeled section based on these constraints.

[0096] (3) Based on the stratigraphic data, field outcrop observations, and drilling data in the study area, the regionally distributed mudstone and gypsum-salt rock layers in the study area are identified to determine the detachment layer in the modeling section. In addition, the basement surface is also used as the regional detachment layer interface.

[0097] (4) The modeling section is divided into several blocks horizontally based on the main fault, and into several layers vertically based on the slip layer. The modeling section can be divided into several analytical units by combining the horizontal and vertical methods.

[0098] (5) Perform separate structural analysis on each parsing unit.

[0099] (6) The individual analytical models are then combined together to form an initial construction model with a complete modeling section.

[0100] (7) Using the constructed initial geological model as a constraint to guide the reprocessing of seismic data.

[0101] (8) At the same time, the initial structural model is modified in turn according to the results of the reprocessing, and the two are iteratively optimized to continuously improve the structural model.

[0102] (9) On this basis, further physical and numerical simulation dual tests were carried out, and finally a reasonable structural model was obtained.

[0103] The structural modeling method of the intracontinental piedmont deformation zone of this application was applied to carry out structural modeling work on a piedmont deformation zone in central and western my country. A typical seismic profile was selected through step (1). The main fault was interpreted on the modeling profile through step (2). Figure 3 The F1 and F2 main faults in the modeling section are determined by step (3). Figure 3 The basement detachment boundary, Cambrian shale detachment surface, Silurian mudstone detachment boundary and Middle Triassic gypsum salt rock detachment surface are shown in Figure 4. Figure 3 Through steps (5) and (6), the initial structural interpretation model of the modeling section is obtained. Through steps (7) and (8), iterative optimization between the geological model and the reprocessing results of geophysical seismic data is achieved. Through step (9), the model is double-checked by physical simulation and numerical simulation, and finally a reasonable modeling model is obtained. Figure 3 .

[0104] The intracontinental piedmont deformation zone structural modeling method of the present application simplifies the complex structure of the piedmont zone, can more reasonably construct a structural model of the intracontinental piedmont deformation zone, provide geological model guidance for the reprocessing and interpretation of seismic data in the piedmont zone, and also provide technical method support for the implementation and characterization of goals in the field of risk exploration in the piedmont zone.

[0105] Embodiment 4

[0106] Please refer to Figure 4 An embodiment provides a device for modeling a tectonic deformation zone in a frontal mountain inland area, using the following modules:

[0107] (1) The processing module 10 is used to identify and interpret the main fault based on the typical modeling seismic profile selected in the study area, wherein the modeling seismic profile is perpendicular or nearly perpendicular to the structural trend of the study area, and the main fault is a large fault that cuts through multiple sets of regional slip layers vertically.

[0108] (2) The determination module 20 is used to determine the slip layer in the modeled seismic profile.

[0109] (3) The division module 30 is used to divide the modeled seismic profile into a number of analytical units in the horizontal and vertical directions, wherein the modeled seismic profile is divided into a number of blocks in the horizontal direction with the main fault as the boundary, and the modeled seismic profile is divided into a number of layers in the vertical direction with the slip layer as the boundary.

[0110] (4) The structural analysis module 40 is used to perform a separate structural analysis on each analysis unit and obtain an explanation model.

[0111] (5) The combination module 50 is used to combine the interpretation models of each analytical unit to form a complete initial structural model of the modeled seismic profile.

[0112] In one embodiment, the intracontinental piedmont deformation zone structural modeling device further includes a reprocessing module 60, an improvement module 70 and a perfection module 80. The reprocessing module 60 is used to use the modeled seismic profile as an initial structural model constraint to guide the reprocessing of the seismic data in the piedmont zone of the study area; the improvement module 70 is used to improve the initial structural model based on the reprocessing results of the seismic data in the piedmont zone; the perfection module 80 is used to repeat the steps of using the modeled seismic profile as an initial structural model constraint to guide the reprocessing of the seismic data in the piedmont zone of the study area according to the structural model formed by the improved initial structural model, so as to realize the mutual iterative optimization between geology and geophysics, continuously improve the constructed structural model and obtain a relatively perfect structural model.

[0113] In one embodiment, the intracontinental piedmont deformation zone structural modeling device further includes a verification module 90. The verification module 90 is used to design a physical simulation model and a numerical simulation model based on a relatively complete structural model, conduct physical simulation and numerical simulation dual verification, and finally obtain a reasonable structural model.

[0114] It should be noted that the above-mentioned inland piedmont deformation zone structural modeling device is used to implement the inland piedmont deformation zone structural modeling method in the above-mentioned embodiments, and each module in the device corresponds to each step in the method.

[0115] Embodiment 5

[0116] Based on the same inventive concept, an embodiment of the present application provides an electronic device, comprising: a memory and a processor; wherein the memory is used to store one or more computer instructions; the one or more computer instructions are executed by the processor to implement the intracontinental piedmont deformation zone structural modeling method described in any one of the above embodiments.

[0117] Embodiment 6

[0118] Based on the same inventive concept, an embodiment of the present application provides a readable storage medium, on which computer instructions are stored; wherein, when the computer instructions are executed by a processor, the intracontinental piedmont deformation zone structural modeling method described in any one of the above embodiments is implemented.

[0119] Among them, the above one or more computer instructions can be formed into a program.

[0120] The above program can be run in the processor, or it can be stored in the memory (or computer-readable medium), which includes permanent and non-permanent, removable and non-removable media. Information storage can be achieved by any method or technology. Information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, read-only compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined in this article, computer-readable media does not include transitory computer-readable media (transit media), such as modulated data signals and carrier waves.

[0121] These computer programs can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps of the functions specified in one or more blocks can be implemented by different modules corresponding to different steps.

[0122] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for modeling the structure of an intracontinental piedmont deformation zone, characterized in that: include: Based on the selection of typical modeling seismic sections in the study area, the main faults are identified and interpreted. The modeling seismic sections are perpendicular or nearly perpendicular to the structural trend of the study area. The main faults are large faults that vertically cut through multiple sets of regional slip layers. Determine the detachment layer in the modeled seismic profile; Divide the modeled seismic section into several analytical units in the horizontal and vertical directions, wherein the modeled seismic section is divided into several blocks in the horizontal direction with the main fault as the boundary, and is divided into several layers in the vertical direction with the slip layer as the boundary; Perform separate structural analysis on each parsing unit and obtain an explanation model; The interpretation models of each analytical unit are combined to form a complete initial structural model of the modeled seismic profile.

2. The method for modeling the structure of the intracontinental piedmont deformation zone according to claim 1, characterized in that: The identification and interpretation of trunk fractures is achieved by any one of the following methods or a combination of two methods: First, the main faults are identified and interpreted based on the characteristics of the reflection wave common axis misalignment, disappearance, and sudden change of attitude in the modeled seismic profile; Secondly, field geological observations are carried out along the modeling survey line. Based on the observations of surface structural points and geological maps, the development location and combination pattern of the main faults are clarified, and the main faults are interpreted on the modeling seismic profile based on this constraint.

3. The method for modeling the structure of the intracontinental piedmont deformation zone according to claim 1, characterized in that: Determining the debonding layer in the modeled seismic profile comprises: Based on the stratigraphic data, field outcrop observations and drilling data in the study area, the regionally distributed mudstone and gypsum salt layers in the study area were determined; The rock layer corresponding to the mudstone layer or gypsum salt layer is the detachment layer, and the basement surface serves as the regional detachment layer interface.

4. A method for modeling the structure of an intracontinental piedmont deformation zone according to any one of claims 1 to 3, characterized in that: The intracontinental piedmont deformation zone structural modeling method further comprises: The modeled seismic profiles were used as constraints for the initial structural model to guide the reprocessing of seismic data in the piedmont zone of the study area; Based on the reprocessing results of the seismic data in the piedmont zone, the initial structural model is improved in turn; According to the tectonic model formed by improving the initial tectonic model, the modeled seismic profiles are repeatedly used as constraints of the initial tectonic model to guide the steps of reprocessing the seismic data in the piedmont zone of the study area, so as to achieve mutual iterative optimization between geology and geophysics, continuously improve the constructed tectonic model and obtain a relatively complete tectonic model.

5. The method for modeling the structure of the intracontinental piedmont deformation zone according to claim 4, characterized in that: The intracontinental piedmont deformation zone structural modeling method further comprises: Based on a relatively complete structural model, a physical simulation model and a numerical simulation model are designed, and dual tests of physical simulation and numerical simulation are carried out to finally obtain a reasonable structural model.

6. The method for modeling the structure of the intracontinental piedmont deformation zone according to claim 5, characterized in that: Designing a corresponding physical simulation model based on the obtained strain rate, time and geometric similarity scaling factors for physical simulation; and / or, Based on the elastic modulus, shear modulus, Poisson's ratio, and cohesion parameters obtained for numerical simulation, the corresponding numerical simulation model is designed.

7. A structural modeling device for an inland piedmont deformation zone, characterized in that: include: A processing module is used to identify and interpret the main fault based on the typical modeling seismic profiles selected in the study area, where the modeling seismic profiles are perpendicular or nearly perpendicular to the structural trend of the study area, and the main fault is a large fault that cuts through multiple sets of regional detachment layers vertically; a determination module for determining the detachment layer in the modeled seismic profile; A division module is used to divide the modeled seismic section into a number of analytical units in the horizontal and vertical directions, wherein the modeled seismic section is divided into a number of blocks in the horizontal direction with the main fault as the boundary, and the modeled seismic section is divided into a number of layers in the vertical direction with the slip layer as the boundary; A structural analysis module, used to perform a separate structural analysis on each analysis unit and obtain an explanation model; and The combination module is used to combine the interpretation models of each analytical unit to form a complete initial structural model of the modeled seismic section.

8. The device for modeling the structure of the inland piedmont deformation zone according to claim 7, characterized in that: The intracontinental piedmont deformation zone structural modeling device further comprises: The reprocessing module is used to use the modeled seismic profile as the initial structural model constraint to guide the reprocessing of seismic data in the piedmont zone of the study area; Improvement module, used to improve the initial structural model based on the reprocessing results of the piedmont seismic data; and The improvement module is used to repeatedly use the modeled seismic profile as the initial structural model constraint based on the structural model formed by the improved initial structural model, guide the steps of reprocessing the seismic data in the piedmont belt of the study area, realize the mutual iterative optimization between geology and geophysics, continuously improve the constructed structural model and obtain a relatively complete structural model.

9. The device for modeling the structure of the inland piedmont deformation zone according to claim 8, characterized in that: The intracontinental piedmont deformation zone structural modeling device further comprises: The verification module is used to design physical simulation models and numerical simulation models based on a relatively complete structural model, carry out dual verification of physical simulation and numerical simulation, and finally obtain a reasonable structural model.

10. An electronic device, characterized in that: include: Memory; and processor; Wherein, the memory is used to store one or more computer instructions; the one or more computer instructions are executed by the processor to implement the method for structural modeling of the intracontinental piedmont deformation zone as described in any one of claims 1 to 6.

11. A readable storage medium, characterized in that: The readable storage medium stores computer instructions; wherein, when the computer instructions are executed by a processor, the method for structural modeling of an intracontinental piedmont deformation zone as described in any one of claims 1 to 6 is implemented.

Images