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Method for establishing complex geologic model quickly

A technology of complex geology and modeling methods, applied in the field of rapid modeling of complex geological models, can solve problems such as no research reports, and achieve the effect of reducing computational data, accelerating modeling speed, and accelerating modeling speed

Inactive Publication Date: 2014-02-26
YANGTZE UNIVERSITY
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Problems solved by technology

At present, in the field of rapid modeling of complex geological modeling, there are no relevant research reports

Method used

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  • Method for establishing complex geologic model quickly
  • Method for establishing complex geologic model quickly
  • Method for establishing complex geologic model quickly

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Embodiment

[0032] The present invention will be further described below with regard to the rapid modeling of the geological model of the surface elevation data (DEM) of a certain work area.

[0033] The data in this embodiment is DEM data, and the DEM data of two models are selected for illustration.

[0034] Model 1: The specification is columns1 (number of columns)*rows1 (number of rows) (columns1=985, rows1=748), the number of original grid points is 736,780, and the number of directly formed triangular faces is 1,476,096, whose X The distance between coordinate values ​​is cellsize1X (cellsize1X=20), the distance between Y coordinate values ​​is cellsize1Y (cellsize1Y=18), and there is only one starting point value for X and Y coordinate values.

[0035] Model 2: The specification is columns2 (number of columns)*rows2 (number of rows) (columns2=2467, rows2=676), the number of original grid points is 1,667,692, and the number of directly formed triangle faces is 3,329,100. The interv...

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Abstract

The invention relates to a method for establishing a complex geologic model quickly and belongs to the technical field of geologic modeling for exploration and development of oil and gas. The method is characterized by including the following steps that firstly, a three-dimensional database of grid points in a work area is established; secondly, initial normal vectors of the grid points are calculated; thirdly, corrected normal vectors of the grid points are calculated; fourthly, the grid points are chosen; fifthly, grid data, with the vertexes deleted, of a complex geologic body in the work area are subject to triangulation to generate a Delaunay triangulation network, and the geologic model is drawn. According to the method, operational data are reduced by deleting part vertexes under the condition that precision is not affected, and the simplified complex geologic model is drawn through the Delaunay triangulation network triangulation method; in this way, the problem of low modeling speed caused by massive data is solved, a grid model with large data is greatly simplified, and the purpose of increasing the modeling speed is achieved. The method has the advantages that the modeling speed is obviously increased, and the high-fidelity geologic model can be obtained.

Description

Technical field: [0001] The invention relates to a rapid modeling method for complex geological models, belonging to the technical field of geological modeling for oil and gas exploration and development. Background technique: [0002] After oil and gas energy has become the main energy source of human society, it has rapidly changed the face of the entire world economy and society. There is no raw material in nature that can have such a huge impact on society like oil and gas. Therefore, the development of geological exploration technology plays a vital role in finding oil and gas reservoirs accurately and efficiently. [0003] 3D geological modeling is a technology that uses computer technology to combine tools such as spatial information management, geological interpretation, spatial analysis and prediction, geostatistics, entity content analysis, and graphic visualization in a 3D environment for geological research. [0004] In the environment of complex geological bodi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/05
Inventor 谢凯刘波张拓丰帆白志君夏巍
Owner YANGTZE UNIVERSITY
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