Interactive geological model construction method
By employing an interactive geological modeling approach, utilizing user interaction, Delaunay triangulation, and tortoise-shell diagram techniques, the limitations of traditional geological modeling in terms of flexibility and accuracy are addressed, enabling efficient and reliable geological model construction and interdisciplinary integration.
Patent Information
- Application Number
- CN202511304556.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-12
- Publication Date
- 2025-12-19
AI Technical Summary
Traditional geological modeling methods suffer from problems such as 'black box' operation, difficulty in modification, strong subjectivity, and difficulty in handling complex structures and uncertainties. They lack flexibility and accuracy, making it difficult to meet the complex modeling requirements of high precision, interpretability, and real-time feedback, and they also lack cross-disciplinary collaboration capabilities.
The model boundary is constructed by responding to user interaction operations, strata and fault lines are drawn and transformed into a spatial discrete point set. The Delaunay triangulation algorithm is used to construct triangular meshes and turtle-back diagrams. The stratigraphic framework is identified by combining the mode voting method, and geological body templates are integrated to generate a geological model, which supports intuitive operation and dynamic adjustment by geological experts.
It enables efficient, flexible, and reliable construction of geological models, supports rapid definition and adjustment, improves the rationality and consistency of models, solves the flexibility and accuracy problems of traditional modeling, and promotes interdisciplinary integration.
Smart Images
Figure CN121170182A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of geological modeling, and particularly relates to an interactive geological model construction method. BACKGROUND
[0002] With the deepening of oil and gas exploration and development, mineral resource evaluation and underground space utilization, higher requirements are put forward for the construction accuracy, expression ability and dynamic updating of geological models. As one of the core means of geological analysis and underground cognition, geological modeling technology has undergone continuous evolution from rule-based grid to unstructured expression and from single discipline to multi-source data fusion. Since the wide application of geological modeling systems, traditional modeling methods have to some extent promoted the digital expression of geological information and engineering application decision support.
[0003] However, traditional geological modeling still has many deficiencies and has gradually failed to meet the current complex modeling needs of high precision, interpretability and real-time feedback. The specific deficiencies include: 1. The modeling process is mostly "black box" processing, relying on back-end interpolation and automatic algorithms, and users have difficulty understanding or intervening in the model generation process, and expert knowledge is difficult to effectively integrate. 2. Model construction relies on the experience and parameter setting of operators, which is highly subjective and difficult to repeat and verify. 3. The expression ability is limited when dealing with complex structures (such as multiple fault penetration, fold curling, and stratigraphic unconformity), and the geometric continuity and topological rationality of the model are difficult to guarantee. 4. Once the model is generated, the modification process is tedious and requires backtracking multiple steps to rebuild, lacking a flexible adjustment and updating mechanism. 5. There is a lack of expression and visualization of data sparsity, multi-solution, uncertainty and other factors, making it difficult to assess the credibility of the model. 6. Most modeling tools use parameter menus as the core interaction method, which does not match the geological interpretation thinking, and the user's cognition is fragmented, affecting modeling efficiency and accuracy. 7. The traditional modeling process lacks cross-professional collaboration capabilities, and the data silo phenomenon is serious, which is not conducive to the integration of geology, geophysics, reservoir engineering and other disciplines. SUMMARY
[0004] The purpose of the present application is to provide an interactive geological model construction method to solve the above problems in the prior art.
[0005] In order to achieve the above purpose, the present application provides an interactive geological model construction method, comprising: constructing a model area boundary in response to the user's interactive operation, and drawing a stratigraphic horizon line and a fault line within the model area boundary; convert the drawn stratigraphic horizon line and fault line into a spatial discrete point set, the spatial discrete point set containing a plurality of spatial discrete points, each spatial discrete point containing corresponding spatial coordinates and geological attribute information; constructing a triangular mesh and a tortoise-back map based on the spatial discrete point set, and fusing the triangular mesh and the tortoise-back map to form a triangular mesh model with geological attribute information; recognizing a stratigraphic framework according to the triangular mesh model and the geological attribute information thereof, and determining a stratigraphic framework structure; automatically combining corresponding triangular mesh units to form each stratigraphic unit based on the stratigraphic framework structure; adding each geological body in a geological body template library to each stratigraphic unit to generate a geological model.
[0006] In one possible design, the interactive operation includes setting lateral CDP trace number, lateral CDP trace interval, longitudinal depth, longitudinal time interval, and longitudinal depth interval, or importing a graphic file or seismic interpretation results.
[0007] In one possible design, the converting the drawn stratigraphic horizon line and fault line into a spatial discrete point set includes: uniformly sampling spatial discrete points along the stratigraphic horizon line and the fault line according to a set point density, and composing a spatial discrete point set based on the spatial discrete points.
[0008] In one possible design, the constructing a triangular mesh and a tortoise-back map based on the spatial discrete point set includes: constructing a triangular mesh based on the spatial coordinates of the spatial discrete points in the spatial discrete point set by using a Delaunay triangulation algorithm.
[0009] In one possible design, the constructing a triangular mesh and a tortoise-back map based on the spatial discrete point set includes: calculating geological attribute information of each triangular mesh unit in the triangular mesh, the geological attribute information including a geological attribute number, and a calculation formula of the geological attribute number being:
[0010] wherein τ represents a triangular mesh unit, L(τ) represents a geological attribute number of the triangular mesh unit τ, v k represents a kth vertex of the triangular mesh unit τ, n represents a number of vertices included in the triangular mesh unit τ, represents a geological attribute number of the vertex v k , represents a floor operation; visualizing the geological attribute number of each triangular mesh unit in the triangular mesh as a color, a layer, or a graphic label to form a tortoise-back map.
[0011] In one possible design, the recognizing a stratigraphic framework according to the triangular mesh model and the geological attribute information thereof, and determining a stratigraphic framework structure includes: Based on the geological attribute information of each triangular mesh element in the triangular mesh model, the stratum unit to which each triangular mesh element belongs is identified by using the mode voting method, and the stratum framework structure is determined.
[0012] In one possible design, after the geological model is generated, the method further includes: storing and visually outputting the geological model.
[0013] Beneficial effects: The present application significantly improves the efficiency, flexibility and accuracy of geological model construction by introducing intelligent modeling auxiliary technology, and supports geologists to guide model generation in an intuitive operation mode, automatically defines and dynamically adjusts key structures such as faults and horizons, and realizes a more efficient and more reliable modeling process, thereby greatly improving the rationality, expression ability and structural consistency of the geological model. The present application overcomes the problems of "black box operation", modification difficulty, strong subjectivity, difficulty in handling complex structures and uncertainty expression in traditional geological modeling, and builds a perceptible, guided and verifiable human-computer interaction geological modeling system, realizes controllable, adjustable and traceable geological modeling process, facilitates rapid iteration and cross-disciplinary integration of the geological model, and has significant technical advantages and application value. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.
[0015] Figure 1 The flowchart of the method in embodiment 1 of the present application. DETAILED DESCRIPTION
[0016] It should be noted that the description of these embodiments is used to help understand the present application, but does not constitute a limitation of the present application. The specific structural and functional details disclosed herein are only used to describe the example embodiments of the present application. However, the present application can be embodied in many alternative forms, and should not be understood as limited in the embodiments set forth herein.
[0017] It should be understood that, unless otherwise explicitly specified and limited, the corresponding terms should be interpreted broadly, for example, "connection" can be fixed connection, or detachable connection, or integral connection; can be directly connected, or indirectly connected through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments can be understood according to the specific circumstances.
[0018] In the following description, specific details are provided to facilitate a complete understanding of the example embodiments. However, a person of ordinary skill in the art will understand that the example embodiments can be practiced without these specific details. For example, devices can be shown in block diagram form to avoid obscuring examples. In other instances, well-known processes, structures, and techniques have not been shown in detail in order to avoid obscuring the embodiments.
[0019] Embodiments: The present embodiments provide an interactive geological model construction method, which can be applied to a corresponding geological modeling computer, such as the geological modeling computer shown in FIG. 1. Figure 1 As shown in FIG. 2, the method comprises the following steps: S1. Constructing a model area boundary in response to interactive operation of a user, and drawing a stratigraphic horizon line and a fault line within the model area boundary.
[0020] In specific implementation, the computer can construct the model area boundary in response to the interactive operation of the user through the interactive interface; the boundary is a work area boundary, which is used to limit the spatial range of geological modeling; the interactive operation includes setting parameters such as the number of horizontal CDP channels, the horizontal CDP channel interval, the vertical depth, the vertical time interval, and the vertical depth interval, or importing a graphic file or seismic interpretation results; the computer constructs the model area boundary according to the parameters such as the number of horizontal CDP channels, the horizontal CDP channel interval, the vertical depth, the vertical time interval, and the vertical depth interval, or according to the imported graphic file or seismic interpretation results. Meanwhile, the computer can draw the stratigraphic horizon line and the fault line within the model area boundary according to the interactive operation of the user through the interactive interface, including the stratigraphic horizon line and fault line drawing operation.
[0021] S2. Converting the drawn stratigraphic horizon line and fault line into a spatial discrete point set, the spatial discrete point set containing a plurality of spatial discrete points, each spatial discrete point containing corresponding spatial coordinates and geological attribute information.
[0022] In specific implementation, after the stratigraphic horizon line and the fault line are drawn, the computer uniformly samples spatial discrete points along the stratigraphic horizon line and the fault line at a set point density, obtains a plurality of spatial discrete points, and forms a spatial discrete point set based on the spatial discrete points, each spatial discrete point in the spatial discrete point set containing corresponding spatial coordinates and geological attribute information.
[0023] S3. Constructing a triangular mesh and a tortoise back map based on the spatial discrete point set, and fusing the triangular mesh and the tortoise back map to form a triangular mesh model with geological attribute information.
[0024] In implementation, the computer constructs a triangular mesh using a Delaunay triangulation algorithm based on the spatial coordinates of the spatial discrete points in the spatial discrete point set. The geological model established by this method can meet the requirements of manual addition or deletion of points or control of boundary constraints, and can realize interactive model adjustment. The specific implementation process includes: determining the spatial coordinates p of the spatial discrete points in the spatial discrete point set i (x i , y i ), i represents the number of the spatial discrete point; Based on the spatial coordinates of each spatial discrete point, a Delaunay triangulation algorithm is used to generate an irregular triangular mesh to ensure that the triangular mesh elements after triangulation meet the requirements of empty circle property and uniform edge angle, which is convenient for subsequent interpolation and visualization. The goal of triangulation of the spatial discrete point set is to organize the irregular spatial discrete point set into a set of triangular mesh that meets the geometric and topological constraints.
[0025] For a two-dimensional point set, the Delaunay triangulation requires that the circumcircle of any triangle does not contain other points. The principle includes: Let the point set be , and the circumcircle of triangle be , then the Delaunay condition is:
[0026] wherein, represents any , represents the point set , represents the spatial coordinates of point , represents the triangle formed by three points, represents the circumcircle of triangle , and represents the coordinates of point .
[0027] The construction principle of the tortoise-back map is to visualize the geological number of each triangular mesh element as color, layer or graphical label, and the core assignment formula uses the weighted average method. The construction process of the tortoise-back map includes: calculating the geological attribute information of each triangular mesh element in the triangular mesh, wherein the geological attribute information includes a geological attribute number, and the calculation formula of the geological attribute number is:
[0028] wherein, τ represents a triangular mesh element, L(τ) represents the geological attribute number of the triangular mesh element τ, v k Let represent the k-th vertex of the triangular mesh cell τ, and n represent the number of vertices contained in the triangular mesh cell τ. Represents vertex v k Geological attribute number, This indicates the floor function; The geological attribute numbers of each triangular grid cell in the triangular grid are visualized as color, layer, or graphic labels to form a turtle-back map.
[0029] After constructing a triangular mesh and a turtle-back map based on a spatial discrete point set, the computer can fuse the triangular mesh and the turtle-back map to form a triangular mesh model with geological attribute information.
[0030] S4. Identify the stratigraphic framework based on the triangular mesh model and its geological attribute information, and determine the stratigraphic framework structure.
[0031] In practice, the computer can automatically identify continuous stratigraphic interfaces and adjacent areas based on the triangular mesh model and its geological attribute information, thus completing stratigraphic framework identification. Stratigraphic framework identification refers to identifying grid cells belonging to different stratigraphic units based on geological attribute information, on the basis of a spatially partitioned grid. The stratigraphic framework identification process can be implemented using a majority voting method, the principle of which is as follows: Assume that each grid cell vertex already has a stratum number. Then the majority voting method will be used:
[0032] in, Indicates taking the mode. Represents a grid cell. Represents grid cells Stratigraphic unit number, Represents grid cells The kth vertex, Represents vertices The geological attribute numbering is used. The stratigraphic unit to which each triangular grid cell belongs can be identified through a majority voting method, thus determining the stratigraphic framework structure.
[0033] S5. Based on the stratigraphic grid structure, the corresponding triangular grid units are automatically combined to form various stratigraphic units.
[0034] In practice, after identifying and determining the stratigraphic grid structure, the computer can automatically combine the corresponding triangular mesh units to form various stratigraphic units based on the stratigraphic grid structure.
[0035] S6. Add the pre-set geological body matches from the geological body template library to each stratigraphic unit to generate a geological model.
[0036] In specific implementation, each geological body of each stratum unit can be pre-configured in a geological body template library, and the geological body template library can support customizing geological body styles and arbitrary combination styles. When supplementing the model structure, the computer can match and add each geological body pre-configured in the geological body template library to each stratum unit of the model to generate a final geological model.
[0037] S7. The geological model is stored and visualized and output for display.
[0038] In specific implementation, the computer can save the generated geological model for subsequent tracing, adjustment and modification. The generated geological model is visualized and output for display.
[0039] The method significantly improves the efficiency, flexibility and accuracy of geological model construction by introducing intelligent modeling assistance technology, and supports geologists to guide model generation in an intuitive operation mode, automatically defines and dynamically adjusts key structures such as faults and horizons, and realizes a more efficient and more reliable modeling process, thereby greatly improving the rationality, expression ability and structural consistency of the geological model. The method overcomes the problems of "black box" operation, modification difficulty, strong subjectivity, difficulty in handling complex structures and uncertainty expression in traditional geological modeling, and builds a perceptible, guided and verifiable human-computer interaction geological modeling system, realizes controllable, adjustable and traceable geological modeling process, and facilitates rapid iteration and interdisciplinary integration of the geological model, which has significant technical advantages and application value.
Claims
1. An interactive geological model construction method, characterized in that, include: The model region boundary is constructed in response to the user's interactive operation, and stratigraphic horizons and fault lines are drawn within the model region boundary; The drawn stratigraphic horizons and fault lines are converted into a set of spatial discrete points. The set of spatial discrete points contains several spatial discrete points, and each spatial discrete point contains corresponding spatial coordinates and geological attribute information. Triangular meshes and turtle-back maps are constructed based on spatial discrete point sets, and the triangular meshes and turtle-back maps are merged to form a triangular mesh model with geological attribute information; Stratigraphic framework identification is performed based on the triangular mesh model and its geological attribute information to determine the stratigraphic framework structure. Based on the stratigraphic grid structure, the corresponding triangular grid units are automatically combined to form various stratigraphic units; Add the pre-set geological body matches from the geological body template library to each stratigraphic unit to generate a geological model.
2. The interactive geological model construction method according to claim 1, characterized in that, The interactive operations include setting the number of transverse CDP traces, the transverse CDP trace spacing, the longitudinal depth, the longitudinal time interval, and the longitudinal depth interval, or importing graphic files or seismic interpretation results.
3. The interactive geological model construction method according to claim 1, characterized in that, The process of converting the drawn stratigraphic horizons and fault lines into a spatially discrete set of points includes: Uniform spatial discrete point sampling is performed along the stratigraphic horizon and fault line at a set point density to obtain several spatial discrete points, and a spatial discrete point set is formed based on each spatial discrete point.
4. The interactive geological model construction method according to claim 1, characterized in that, The construction of triangular meshes and tortoise-back diagrams based on spatial discrete point sets includes: Based on the spatial coordinates of each discrete point in the spatial discrete point set, a triangular mesh is constructed using the Delaunay triangulation algorithm.
5. The interactive geological model construction method according to claim 4, characterized in that, The construction of triangular meshes and tortoise-back diagrams based on spatial discrete point sets includes: The geological attribute information of each triangular mesh cell in the triangular mesh is calculated and determined. The geological attribute information includes a geological attribute number, and the formula for calculating the geological attribute number is: Where τ represents a triangular mesh element, L(τ) represents the geological attribute number of the triangular mesh element τ, and v k Let represent the k-th vertex of the triangular mesh cell τ, and n represent the number of vertices contained in the triangular mesh cell τ. Represents vertex v k Geological attribute number, This indicates the floor function; The geological attribute numbers of each triangular grid cell in the triangular grid are visualized as color, layer, or graphic labels to form a turtle-back map.
6. The interactive geological model construction method according to claim 1, characterized in that, The step of identifying the stratigraphic framework based on the triangular mesh model and its geological attribute information, and determining the stratigraphic framework structure, includes: Based on the geological attribute information of each triangular grid unit in the triangular grid model, the stratigraphic unit to which each triangular grid unit belongs is identified by the mode voting method, and the stratigraphic framework structure is determined.
7. The interactive geological model construction method according to claim 1, characterized in that, After generating the geological model, the method further includes storing and visualizing the geological model.