Automatic construction and dynamic updating method for geological three-dimensional model

Abstract

The invention discloses an automatic construction and dynamic updating method for a geological three-dimensional model, and relates to the technical field of geological modeling. The method comprises the following specific steps: acquiring multi-source geological exploration data; the authenticity of the multi-source geological detection data is judged, and data meeting conditions are extracted for data fusion to establish a geological information database; performing interpolation processing on the three-dimensional coordinate data according to the three-dimensional coordinate data of all the measuring points in the geological information database to obtain three-dimensional data after interpolation processing; calling three-dimensional modeling software to establish a geological three-dimensional model according to the three-dimensional data; after the geological three-dimensional model is established, when data updating occurs in a target area, new stratum information is obtained, the orientation corresponding to the new stratum information is used as a new constraint point, and the geological three-dimensional model is updated according to the structure of the new constraint point and rock attribute information. According to the method, the three-dimensional geological model is constructed based on the multi-source data, so that the visualization accuracy of geological conditions can be effectively improved, and the spatial characteristics of the geological body can be reflected more truly.

Description

Technical Field

[0001] The present invention relates to the technical field of geological modeling, and in particular to a method for automatically constructing and dynamically updating a geological three-dimensional model. Background Art

[0002] Three-dimensional geological modeling is one of the key technologies for geological data visualization, geological spatial analysis and construction. Its main idea is to simulate geological model data through complex modeling algorithms after abstract processing of complex geological phenomena, and finally express the underground geological conditions in a three-dimensional visualization way to assist geological personnel in visual analysis and decision-making. In the prior art, three-dimensional geological modeling work is mostly based on drilling data. The three-dimensional geological model based on a single data source is not accurate, the data utilization rate is not high, and the utilization of multi-source heterogeneous data is insufficient. In addition, the three-dimensional modeling method in the prior art is generally based on static model construction. Even if it is updated, it is manually updated through new data, and the automatic update of modeling data cannot be completed in real time, quickly and efficiently. Summary of the invention

[0003] The purpose of the present invention is to provide a method for automatically constructing and dynamically updating a geological three-dimensional model to solve the problems raised in the background technology.

[0004] To achieve the above object, the present invention provides the following solution: a method for automatically constructing and dynamically updating a geological three-dimensional model, the specific steps of which include the following:

[0005] Acquire multi-source geological exploration data;

[0006] Determine the authenticity of the multi-source geological exploration data, extract qualified data, perform data fusion and establish a geological information database;

[0007] According to the three-dimensional coordinate data of all the measuring points in the geological information database, interpolation processing is performed on the three-dimensional coordinate data to obtain three-dimensional data after interpolation processing;

[0008] Calling three-dimensional modeling software to establish a geological three-dimensional model according to the three-dimensional data;

[0009] After the geological three-dimensional model is established, when data in the target area is updated, new stratum information is acquired, and the orientation corresponding to the new stratum information is used as a new constraint point. The geological three-dimensional model is updated according to the structure and rock property information of the new constraint point.

[0010] Preferably, the multi-source data include drilling data, plan geological maps, cross-sectional maps, exploration and mining engineering drawings, and geophysical interpretation data.

[0011] Preferably, the specific steps of performing data fusion are:

[0012] Data source integration: convert the data format of the multi-source data, that is, convert the input multiple data sources into a unified format, and unify the modeling unit, scale and coordinate system;

[0013] Geometric space integration: performing three-dimensional spatial positioning of the multi-source data and three-dimensional conversion of plane data.

[0014] Preferably, the multi-source geological exploration data is subjected to an operation of eliminating false information and retaining true information by performing a cyclic data fitting calculation.

[0015] Preferably, the specific steps of updating the geological three-dimensional model according to the structural and rock property information of the new constraint points are:

[0016] Establishing a virtual well at the new constraint point, wherein virtual well information of the virtual well matches the new formation information;

[0017] Using the virtual well information to increase the structural and rock property information of the new constraint point;

[0018] The three-dimensional guidance model is updated according to the structural and rock property information of the new constraint point.

[0019] Preferably, the three-dimensional coordinate data is interpolated using a Kriging interpolation algorithm.

[0020] Preferably, the constructed geological three-dimensional model is displayed to achieve visualization.

[0021] Preferably, it also includes judging whether there is any missing, inverted or repeated strata in any single hole of the drilling data, taking the single hole without missing, inverted or repeated strata as a typical stratified single hole, and taking the single hole with missing, inverted or repeated strata as a special stratified single hole; for the special stratified single hole, the strata are supplemented on the basis of retaining the original stratification.

[0022] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects: constructing a three-dimensional geological model based on multi-source data can effectively improve the accuracy of geological condition visualization and more realistically reflect the spatial characteristics of the geological body; preprocessing and data fusion are performed on data information to realize the automatic modeling process of the geological three-dimensional model, thereby improving the accuracy and efficiency of three-dimensional modeling of geological structural surfaces; real-time and rapid analysis and processing of modeling data are performed, thereby realizing rapid and efficient automatic updating of the three-dimensional geological structure model. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 is a flow chart of the method of the present invention;

[0025] Figure 2 This is a category diagram of multi-source geological exploration data of the present invention. DETAILED DESCRIPTION

[0026] 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.

[0027] The present invention provides a method for automatically constructing and dynamically updating a geological three-dimensional model. Figure 1 As shown, the specific steps include the following:

[0028] S1. Acquire multi-source geological exploration data;

[0029] S2. Determine the authenticity of multi-source geological exploration data, extract qualified data, perform data fusion and establish a geological information database;

[0030] S3, interpolating the three-dimensional coordinate data according to the three-dimensional coordinate data of all measuring points in the geological information database to obtain three-dimensional data after interpolation;

[0031] S4, calling 3D modeling software to establish a geological 3D model according to the 3D data;

[0032] S5. After the geological three-dimensional model is established, when data in the target area is updated, new stratigraphic information is obtained, and the orientation corresponding to the new stratigraphic information is used as a new constraint point. The geological three-dimensional model is updated according to the structural and rock property information of the new constraint point.

[0033] Further, such as Figure 2As shown, in step S1, multi-source data includes drilling data, plan geological map, profile map, exploration engineering map, and geophysical interpretation data. Borehole data comes from direct contact with rock strata, can truly reflect geological information, and is the most reliable underground detection data; geological maps such as plan geological maps, profile maps, exploration engineering maps, etc. are drawn on the basis of a large amount of drilling data, geophysical interpretation results and geological survey work, combined with the prior knowledge of geological experts, and can reflect the stratigraphic framework structure and the distribution law and morphological characteristics of faults, etc., and are very important and relatively complex data sources in modeling data sources; geophysical interpretation data can better constrain the morphology of geological bodies and fault structures, and provide verification and support information for the construction of three-dimensional models of deep geological bodies and fault structures. When the number of boreholes is limited and unevenly distributed, geophysical interpretation data can be used as an important data source for geological model construction.

[0034] It should be noted that when acquiring drilling data, it also includes judging whether there are any missing, inverted or repeated strata in any single hole of the drilling data. The single hole without missing, inverted or repeated strata will be regarded as a typical stratified single hole, and the single hole with missing, inverted or repeated strata will be regarded as an aberrant stratified single hole. For the aberrant stratified single hole, the strata will be supplemented on the basis of retaining the original stratification.

[0035] Furthermore, in step S2, a cyclic data fitting calculation is performed to separate the true from the false on the multi-source geological exploration data, and data meeting the conditions is extracted.

[0036] The specific steps for data fusion for qualified data are as follows:

[0037] S21. Data source integration: Convert the data format of multiple source data, that is, convert the input multiple data sources into a unified format, and unify the modeling unit, scale and coordinate system;

[0038] S22. Geometric space integration: Three-dimensional spatial positioning of multi-source data and three-dimensional conversion of plane data.

[0039] Geological information data comes from various sources, has different formats and different precisions, and the comprehensive utilization of data is difficult. Therefore, in this embodiment, under the basic goal of integrating geological cognition, data source integration and geometric space integration are carried out to meet the modeling data requirements of multi-source data fusion.

[0040] Furthermore, in step S3, the Kriging interpolation algorithm is used to interpolate the three-dimensional coordinate data. The Kriging interpolation algorithm, also known as the spatial autocovariance optimal interpolation method, focuses on the determination of weight coefficients so that the interpolation function is in the best state. It is an interpolation method that performs unbiased optimal estimation of the regional variation value in a limited area based on structural analysis and variogram theory. According to the results of variogram and correlation analysis, regional variables have a certain spatial correlation. In essence, it uses the structural characteristics of the variogram and the original data of the regional variables to perform linear unbiased optimal estimation of the regional variable values ​​of the sampling points.

[0041] Furthermore, in step S5, the specific steps of updating the geological three-dimensional model according to the structural and rock attribute information of the new constraint points are as follows:

[0042] S51, establishing a virtual well at the new constraint point, where the virtual well information of the virtual well matches the new formation information;

[0043] S52, using virtual well information to add structural and rock property information of new constraint points;

[0044] S53. Update the three-dimensional guidance model according to the structural and rock property information of the new constraint point.

[0045] Furthermore, it also includes displaying the constructed geological three-dimensional model to achieve visualization.

[0046] 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 method for automatically constructing and dynamically updating a geological three-dimensional model, characterized in that: The specific steps include the following: Acquire multi-source geological exploration data; Determine the authenticity of the multi-source geological exploration data, extract qualified data, perform data fusion and establish a geological information database; According to the three-dimensional coordinate data of all the measuring points in the geological information database, interpolation processing is performed on the three-dimensional coordinate data to obtain three-dimensional data after interpolation processing; Calling three-dimensional modeling software to establish a geological three-dimensional model according to the three-dimensional data; After the geological three-dimensional model is established, when data in the target area is updated, new stratum information is acquired, and the orientation corresponding to the new stratum information is used as a new constraint point. The geological three-dimensional model is updated according to the structure and rock property information of the new constraint point.

2. A method for automatically constructing and dynamically updating a geological three-dimensional model according to claim 1, characterized in that: The multi-source data include drilling data, plan geological maps, cross-section maps, exploration and mining engineering drawings, and geophysical interpretation data.

3. A method for automatically constructing and dynamically updating a geological three-dimensional model according to claim 1, characterized in that: The specific steps for data fusion are: Data source integration: convert the data format of the multi-source data, that is, convert the input multiple data sources into a unified format, and unify the modeling unit, scale and coordinate system; Geometric space integration: performing three-dimensional spatial positioning of the multi-source data and three-dimensional conversion of plane data.

4. A method for automatically constructing and dynamically updating a geological three-dimensional model according to claim 1, characterized in that: The multi-source geological exploration data is subjected to an operation of eliminating false information and retaining true information by performing a cyclic data fitting calculation.

5. The method for automatically constructing and dynamically updating a geological three-dimensional model according to claim 1, characterized in that: The specific steps of updating the geological three-dimensional model according to the structural and rock attribute information of the new constraint points are: Establishing a virtual well at the new constraint point, wherein virtual well information of the virtual well matches the new formation information; Using the virtual well information to increase the structural and rock property information of the new constraint point; The three-dimensional guidance model is updated according to the structural and rock property information of the new constraint point.

6. A method for automatically constructing and dynamically updating a geological three-dimensional model according to claim 1, characterized in that: The three-dimensional coordinate data is interpolated using a Kriging interpolation algorithm.

7. A method for automatically constructing and dynamically updating a geological three-dimensional model according to claim 1, characterized in that: The constructed geological three-dimensional model is displayed to achieve visualization.

8. A method for automatically constructing and dynamically updating a geological three-dimensional model according to claim 2, characterized in that: It also includes determining whether there is a stratum missing, inversion or duplication in any single hole of the drilling data, taking a single hole without stratum missing, inversion or duplication as a typical stratified single hole, and taking a single hole with stratum missing, inversion or duplication as a special stratified single hole; For the above-mentioned single hole with special-shaped stratification, the stratum gap is filled on the basis of retaining the original stratification.

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