Complex geological structure modeling method based on sparse point cloud curved surface reconstruction

A technology for surface reconstruction and complex geology, applied in the field of geology

Inactive Publication Date: 2017-03-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0012] In order to solve the above technical problems, the present invention proposes a complex geological structure modeling method based on sparse point cloud surface reconstruction. After successfully constructing the layer model, the side is closed according to certain rules, and finally the closed The block model of inverted geological structure solves the problem of modeling inverted geological 3D structures

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  • Complex geological structure modeling method based on sparse point cloud curved surface reconstruction
  • Complex geological structure modeling method based on sparse point cloud curved surface reconstruction
  • Complex geological structure modeling method based on sparse point cloud curved surface reconstruction

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[0044] In order to facilitate those skilled in the art to understand the technical content of the present invention, the content of the present invention will be further explained below in conjunction with the accompanying drawings.

[0045] like figure 1 Shown is the scheme flow chart of the present invention, the present invention proposes a complex geological structure modeling method based on sparse point cloud surface reconstruction, including:

[0046] S1. Select a projection plane; and vertically project the original seed point data onto the projection plane. The projection plane must satisfy two constraints:

[0047] (1) No multiple value points, that is, it cannot contain two or more original seed point data. After the data is vertically projected onto the projection plane, the projection points are completely coincident, that is, the coordinates of the projection points are exactly the same. like figure 2 As shown, the discrete point data represented by A, B, C, D...

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Abstract

The invention discloses a complex geological structure modeling method based on sparse point cloud curved surface reconstruction, for solving the problem of multiple values of a geological horizon in a reverse geological structure in some areas, which cannot be solved by use of a conventional grid method. The idea of a projection plane is brought forward, i.e., original seed point data is vertically projected to a certain plane, Delaunay triangle network connection is performed on the plane, then a space triangle network is recovered through a one-to-one corresponding relation between seed points and projection points, reconstruction of a complex geological curved surface is completed in such a way, selection of the projection plane is converted into an optimization mathematic model, then the optimization mathematic model is converted to a convex optimization problem, and rapid solving is performed.

Description

technical field [0001] The invention belongs to the technical field of geology, and in particular relates to a complex geological structure modeling method. Background technique [0002] With the continuous development of oil and gas reservoirs, 3D geological modeling is playing an increasingly important role. As the most basic and important research work in the process of oil and gas reservoir exploration and development, it can not only provide important data for the process of oil and gas reservoir development, but also To allow geologists to have a more accurate understanding of the underground geological structure, therefore, the research on 3D geological modeling technology is becoming more and more important. 3D geological modeling is based on the original data such as drilling data and section diagrams, and establishes a digital model that can accurately reflect the underground geological structure. As the most important part of 3D geological modeling, that is, struc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/05G06T17/30
CPCG06T17/05G06T17/30
Inventor 鲁才宋三泰胡光岷
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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