Triangular framework mesh generation of 3D geological structure

Abstract

the dynamic simulation of oil migration and accumulation is an important issue on the research of petroleum exploration, and it is a numerical simulation process with special requirement on the framework mesh of 3D geological models, which means that the mesh should have same geometry and topology relation near the intersected part of geological surfaces. In this paper, basing on the conforming Delaunay triangulation algorithm to construct mesh of individual geological stratum or fault, a novel link-Delaunay-triangulation method is presented to achieve the geometric and topological consistency in the intersected line between two surfaces, also with the analysis of termination of our algorithm. Finally, some examples of the geological framework mesh are provided and the experimental result proved that the algorithm's effectiveness in engineering practice.

Method for generating high-quality tetrahedral meshes of geological models by utilizing CGAL

“…Various commercial software programs have been developed and applied to numeral calculations in recent years [11] , [12] , [13] , [14] . For example, HyperMesh can generate all the mesh types required in finite element calculations and ANSA is similar to HyperMesh.…”

A Clustering-Based Bubble Method for Generating High-Quality Tetrahedral Meshes of Geological Models

“…Many researchers have focused on tetrahedral mesh generation methods [7,8]. For example, Meng [9,10] proposed a novel link-Delaunay-triangulation method to achieve geometric and topological consistency. Indirect methods [11,12] were proposed to convert Delaunay triangular meshes into quadrilateral meshes by combining adjacent pairs of triangles.…”