A three-dimensional visualization method for multi-scale geological structure models

Abstract

The present invention provides a three-dimensional visualization expression method of a multi-scale geological structure model, including: collecting geological exploration data; the geological exploration data includes geophysical information, drilling information, outcrop exploration information, seismic information and geological age data; interpolating and simulating the geological exploration data to obtain an exploration sample set; preprocessing the exploration sample set to obtain preprocessed data; the preprocessing process includes data cleaning, format unification and noise removal; based on three-dimensional modeling technology, constructing a multi-scale geological structure model according to the preprocessed data; using a multi-scale analysis method to decompose the scale of the geological structure model to form a model representation of different scale levels; using three-dimensional graphics processing technology to convert the model representation into a three-dimensional visualization image. The present invention can effectively improve the expression ability of the geological model and the user experience, and has important practical application value for geological exploration and resource assessment.

Description

Technical Field

[0001] The present invention relates to the field of three-dimensional visualization design, and in particular to a three-dimensional visualization expression method for a multi-scale geological structure model. Background Art

[0002] With the development of science and technology, the demand for visualization technology in geological exploration is increasing. Existing geological model visualization methods often have limitations when processing large-scale complex data, such as low resolution, slow processing speed, and difficulty in expressing multi-scale geological characteristics, which limits the effectiveness of geological models in practical applications. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a three-dimensional visualization expression method for a multi-scale geological structure model.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] A three-dimensional visualization expression method for a multi-scale geological structure model, comprising:

[0006] Collecting geological exploration data; the geological exploration data includes geophysical information, drilling information, outcrop survey information, seismic information and geological age data;

[0007] Performing interpolation simulation on the geological exploration data to obtain an exploration sample set;

[0008] Preprocessing the exploration sample set to obtain preprocessed data; the preprocessing process includes data cleaning, format unification and noise removal;

[0009] Based on the three-dimensional modeling technology, construct a multi-scale geological structure model according to the pre-processed data;

[0010] Using a multi-scale analysis method, the geological structure model is scale-decomposed to form model representations at different scale levels;

[0011] The model representation is converted into a three-dimensional visualization image using three-dimensional graphics processing technology.

[0012] Preferably, interpolation simulation is performed on the geological exploration data to obtain an exploration sample set, including:

[0013] Based on the variogram analysis method, the geological exploration data is spatially analyzed to evaluate the spatial correlation of each data in the geological exploration data;

[0014] According to the type of each data in the geological exploration data and the spatial correlation, a corresponding geological data interpolation method is selected to interpolate each data in the geological exploration data to obtain the exploration sample set.

[0015] Preferably, the geological data interpolation method includes Kriging interpolation, inverse distance weighted interpolation, radial basis function interpolation, triangulation method and smooth surface method.

[0016] Preferably, the data cleaning includes: filling in missing data values ​​and deleting outlier data values.

[0017] Preferably, based on the three-dimensional modeling technology, a multi-scale geological structure model is constructed according to the preprocessed data, including:

[0018] constructing a microfacies scale model, a structural model and an initial geological model based on the preprocessed data;

[0019] Based on the microfacies scale model, the structural model and the initial geological model, a flow simulation process in accordance with a real geological environment is constructed according to a preset scale enhancement strategy;

[0020] The microfacies scale model, the structural model and the initial geological model are updated according to the flow simulation process to obtain the geological structural model.

[0021] Preferably, a multi-scale analysis method is used to decompose the geological structure model to form model representations at different scale levels, including:

[0022] Obtain the target analysis area;

[0023] Constructing a high-resolution sub-model for the portion of the geological structure model corresponding to the target analysis area; the high-resolution sub-model is used to capture geological features of a set scale; the geological features include rock layers, faults and pore structures;

[0024] Performing model integration on each of the high-resolution sub-models to obtain a large-scale model;

[0025] A multi-scale simulation is performed on the target analysis area based on the large-scale model to display the model representation at different scales.

[0026] Preferably, the model representation is converted into a three-dimensional visual image using three-dimensional graphics processing technology, including:

[0027] Constructing a geological model library and a BIM component library according to the model representation;

[0028] Based on Dynamo visual programming and Revit parametric modeling method, a three-dimensional visual information model is established according to the geological model library and the BIM component library;

[0029] Visual display is performed according to the three-dimensional visualization information model to obtain the three-dimensional visualization image.

[0030] Preferably, based on Dynamo visual programming and Revit parametric modeling method, a three-dimensional visual information model is established according to the geological model library and the BIM component library, including:

[0031] Create parametric families;

[0032] Extract positioning information of model components;

[0033] Extract parameter information of model components;

[0034] Summarize the location information and parameter information of model components to form an input data table with standardized format that can be read by the Dynamo tool;

[0035] The Dynamo tool is run in the Revit software for visual programming, the parametric component family is called, and the input data table is read, the component family parameters are adjusted in batches, and the three-dimensional visual information model is built.

[0036] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0037] The present invention provides a three-dimensional visualization expression method of a multi-scale geological structure model, including: collecting geological exploration data; the geological exploration data includes geophysical information, drilling information, outcrop exploration information, seismic information and geological age data; interpolating and simulating the geological exploration data to obtain an exploration sample set; preprocessing the exploration sample set to obtain preprocessed data; the preprocessing process includes data cleaning, format unification and noise removal; based on three-dimensional modeling technology, constructing a multi-scale geological structure model according to the preprocessed data; using a multi-scale analysis method, decomposing the geological structure model to form model representations at different scale levels; using three-dimensional graphics processing technology, converting the model representation into a three-dimensional visualization image. The present invention can effectively improve the expression ability of the geological model and the user experience, and has important practical application value for geological exploration and resource assessment. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0039] Figure 1 A flow chart of a method provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The purpose of the present invention is to provide a three-dimensional visualization expression method for a multi-scale geological structure model, which can effectively improve the expression ability of the geological model and the user experience, and has important practical application value for geological exploration and resource assessment.

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] Figure 1 A flow chart of a method provided by an embodiment of the present invention, such as Figure 1 As shown, the present invention provides a three-dimensional visualization expression method of a multi-scale geological structure model, comprising:

[0044] Step 100: Collecting geological exploration data; the geological exploration data includes geophysical information, drilling information, outcrop survey information, seismic information and geological age data;

[0045] Step 200: performing interpolation simulation on the geological exploration data to obtain an exploration sample set;

[0046] Step 300: preprocessing the exploration sample set to obtain preprocessed data; the preprocessing process includes data cleaning, format unification and noise removal;

[0047] Step 400: constructing a multi-scale geological structure model according to the preprocessed data based on three-dimensional modeling technology;

[0048] Step 500: using a multi-scale analysis method to decompose the geological structure model to form model representations at different scale levels;

[0049] Step 600: Using three-dimensional graphics processing technology, convert the model representation into a three-dimensional visualization image.

[0050] Specifically, this embodiment aims to improve the expression clarity and visualization effect of the geological structure model so as to better carry out geological exploration and resource assessment. The method includes the collection of geological data, the construction of the model, multi-scale processing and three-dimensional visualization display.

[0051] Preferably, interpolation simulation is performed on the geological exploration data to obtain an exploration sample set, including:

[0052] Based on the variogram analysis method, the geological exploration data is spatially analyzed to evaluate the spatial correlation of each data in the geological exploration data;

[0053] According to the type of each data in the geological exploration data and the spatial correlation, a corresponding geological data interpolation method is selected to interpolate each data in the geological exploration data to obtain the exploration sample set.

[0054] Furthermore, this embodiment is based on the data obtained from geophysical prospecting, drilling, outcrop exploration, etc., and follows the idea from coarse to fine, from low resolution to high resolution, from point-line-surface-body, with the help of interpolation methods and random simulation algorithms, etc., to construct geometric models and attribute models of different scales, thereby realizing three-dimensional visualization and digital expression of geological data.

[0055] Preferably, the geological data interpolation method includes Kriging interpolation, inverse distance weighted interpolation, radial basis function interpolation, triangulation method and smooth surface method.

[0056] Alternatively, Kriging interpolation is a geostatistical method based on optimal linear unbiased estimation that can take into account the spatial correlation and directionality of the data. Inverse distance weighted (IDW) interpolation is a simple deterministic method that assigns weights based on the inverse of the distance. Radial basis function (RBF) interpolation is a method that uses radial basis functions as weights. Commonly used functions include Gaussian functions, polynomial functions, etc. Triangulation (TIN) and smooth surfaces are methods of connecting data points to form triangular meshes and interpolating on these meshes.

[0057] Preferably, the data cleaning includes: filling in missing data values ​​and deleting outlier data values.

[0058] Preferably, based on the three-dimensional modeling technology, a multi-scale geological structure model is constructed according to the preprocessed data, including:

[0059] constructing a microfacies scale model, a structural model and an initial geological model based on the preprocessed data;

[0060] Based on the microfacies scale model, the structural model and the initial geological model, a flow simulation process in accordance with a real geological environment is constructed according to a preset scale enhancement strategy;

[0061] The microfacies scale model, the structural model and the initial geological model are updated according to the flow simulation process to obtain the geological structural model.

[0062] Specifically, in this embodiment, 4D seismic data can also be acquired in real time, and the geological structure model can be updated and optimized in real time through the 4D seismic data.

[0063] Preferably, a multi-scale analysis method is used to decompose the geological structure model to form model representations at different scale levels, including:

[0064] Obtain the target analysis area;

[0065] Constructing a high-resolution sub-model for the portion of the geological structure model corresponding to the target analysis area; the high-resolution sub-model is used to capture geological features of a set scale; the geological features include rock layers, faults and pore structures;

[0066] Performing model integration on each of the high-resolution sub-models to obtain a large-scale model;

[0067] A multi-scale simulation is performed on the target analysis area based on the large-scale model to display the model representation at different scales.

[0068] Specifically, the specific technical route represented by the model in this embodiment is as follows:

[0069] 1) Understand large-scale models: Analyze existing large-scale geological models to understand their basic structure and main geological features. Identify key geological units and interfaces in the model.

[0070] 2) Determine the target area: Select the target area that needs to be decomposed. These areas are usually parts that have special significance for the overall model, such as areas with complex geological structures or high economic value.

[0071] 3) Collect detailed data: Collect more detailed data on the target area, including drilling data, seismic data, core analysis, geophysical measurements, etc. The more detailed the data, the more reliable the decomposed model.

[0072] 4) Create high-resolution sub-models: Use the detailed data collected to create a high-resolution geological model of the target area. The sub-model should be able to capture geological features at a smaller scale, such as fine rock layers, faults, pore structures, etc.

[0073] 5) Calibration and verification: Calibrate the sub-model based on actual field data or other available information. Verify the accuracy of the model to ensure that it reflects the actual geological conditions.

[0074] 6) Integration into the large-scale model: Integrate the high-resolution sub-model back into the large-scale model to ensure the continuity of geological features and attributes at the interface between different scale models.

[0075] 7) Multi-scale simulation: Use the integrated model to perform multi-scale simulation to study geological processes at different scales, that is, to obtain model representations of each model.

[0076] 8) Analyze the results: Assess the impact of geological features at a finer scale on the overall model.

[0077] Preferably, the model representation is converted into a three-dimensional visual image using three-dimensional graphics processing technology, including:

[0078] Constructing a geological model library and a BIM component library according to the model representation;

[0079] Based on Dynamo visual programming and Revit parametric modeling method, a three-dimensional visual information model is established according to the geological model library and the BIM component library;

[0080] Visual display is performed according to the three-dimensional visualization information model to obtain the three-dimensional visualization image.

[0081] Specifically, this embodiment adopts the parametric modeling method of Dynamo+Revit to achieve the goals of reducing the modeling workload, shortening the modeling time, improving the model precision, and reducing errors. The parametric modeling method of Dynamo+Revit is adopted to achieve the purpose of uniformly controlling the flow simulation process of the geological model. The goals of reducing the modeling workload, shortening the modeling time, improving the model precision, and avoiding errors are achieved.

[0082] Preferably, based on Dynamo visual programming and Revit parametric modeling method, a three-dimensional visual information model is established according to the geological model library and the BIM component library, including:

[0083] Create parametric families;

[0084] Extract positioning information of model components;

[0085] Extract parameter information of model components;

[0086] Summarize the location information and parameter information of model components to form an input data table with standardized format that can be read by the Dynamo tool;

[0087] The Dynamo tool is run in the Revit software for visual programming, the parametric component family is called, and the input data table is read, the component family parameters are adjusted in batches, and the three-dimensional visual information model is built.

[0088] Furthermore, this embodiment also uses GPU-accelerated volume rendering technology to achieve real-time visualization of complex geological structures. At the same time, it combines multi-scale analysis technology to allow users to seamlessly switch between different levels of detail through detail level control to adapt to different exploration and analysis needs.

[0089] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0090] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A three-dimensional visualization expression method for a multi-scale geological structure model, characterized in that: include: Collecting geological exploration data; the geological exploration data includes geophysical information, drilling information, outcrop survey information, seismic information and geological age data; Performing interpolation simulation on the geological exploration data to obtain an exploration sample set; Preprocessing the exploration sample set to obtain preprocessed data; The preprocessing process includes data cleaning, format unification and noise removal; Based on the three-dimensional modeling technology, construct a multi-scale geological structure model according to the pre-processed data; Using a multi-scale analysis method, the geological structure model is scale-decomposed to form model representations at different scale levels; Using three-dimensional graphics processing technology, converting the model representation into a three-dimensional visualization image; Based on the three-dimensional modeling technology, a multi-scale geological structure model is constructed according to the pre-processed data, including: constructing a microfacies scale model, a structural model and an initial geological model based on the preprocessed data; Based on the microfacies scale model, the structural model and the initial geological model, a flow simulation process in accordance with a real geological environment is constructed according to a preset scale enhancement strategy; The microfacies scale model, the structural model and the initial geological model are updated according to the flow simulation process to obtain the geological structural model.

2. The three-dimensional visualization expression method of the multi-scale geological structure model according to claim 1 is characterized in that: Interpolation simulation is performed on the geological exploration data to obtain an exploration sample set, including: Based on the variogram analysis method, spatial analysis is performed on the geological exploration data to evaluate the spatial correlation of each data in the geological exploration data; According to the type of each data in the geological exploration data and the spatial correlation, a corresponding geological data interpolation method is selected to interpolate each data in the geological exploration data to obtain the exploration sample set.

3. The three-dimensional visualization expression method of the multi-scale geological structure model according to claim 2 is characterized in that: The geological data interpolation methods include Kriging interpolation, inverse distance weighted interpolation, radial basis function interpolation, triangulation method and smooth surface method.

4. The three-dimensional visualization expression method of a multi-scale geological structure model according to claim 1, characterized in that: The data cleaning includes: filling in missing data values ​​and deleting outliers.

5. The three-dimensional visualization expression method of a multi-scale geological structure model according to claim 1, characterized in that: The multi-scale analysis method is used to decompose the geological structure model to form model representations at different scale levels, including: Obtain the target analysis area; Constructing a high-resolution sub-model for the portion of the geological structure model corresponding to the target analysis area; the high-resolution sub-model is used to capture geological features of a set scale; the geological features include rock layers, faults and pore structures; Performing model integration on each of the high-resolution sub-models to obtain a large-scale model; A multi-scale simulation is performed on the target analysis area based on the large-scale model to display the model representation at different scales.

6. The three-dimensional visualization expression method of a multi-scale geological structure model according to claim 1, characterized in that: The model representation is converted into a three-dimensional visualization image by using three-dimensional graphics processing technology, including: Constructing a geological model library and a BIM component library according to the model representation; Based on Dynamo visual programming and Revit parametric modeling method, a three-dimensional visual information model is established according to the geological model library and the BIM component library; Visual display is performed according to the three-dimensional visualization information model to obtain the three-dimensional visualization image.

7. The three-dimensional visualization expression method of a multi-scale geological structure model according to claim 6, characterized in that: Based on Dynamo visual programming and Revit parametric modeling method, a three-dimensional visual information model is established according to the geological model library and BIM component library, including: Create parametric families; Extract positioning information of model components; Extract parameter information of model components; Summarize the location information and parameter information of model components to form an input data table with standardized format that can be read by the Dynamo tool; The Dynamo tool is run in the Revit software to perform visual programming, the parametric family is called, and the input data table is read to adjust the component family parameters in batches to build the three-dimensional visual information model.

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