For the generation of a 3d mesh geometry of a body, for the purpose of performing a representative of this body

摘要

The method can be applied, for example, in a geological structure defined from available data acquired either by measurements, or by analyses and interpretations of seismic data or loggings achieved in the wells. It comprises a prior modelling of the limits (edges of the zone, discontinuities or faults, for example) by means of triangulated surfaces surrounding, at best, these limits, and a fractionation of the zone studied in blocks having at most six faces, the faces of which correspond to discontinuities or main faults of the zone previously triangulated. Each block is then subdivided into a set of elementary cells necessary for the modeling of the zone by finite elements or differences, by making a grid of each of the faces of the block by interpolation from its edges so as to obtain a grid, followed by populating of the nodes of each block in its thickness, by interpolation from the nodes of the various grids formed on the different faces, these operations being accompanied by special procedures homogenization in order to readjust the size of the cells to the inside of each block in accordance with the rules defined. The knitted blocks are then reassembled. & br / application in particular to the study of oil fields, i.e.