METHOD FOR ADAPTING A MESH MODEL OF A GEOLOGICAL SUBSURFACE

摘要

The present invention concerns a method for adapting a mesh model to make it match a target. The model comprises a plurality of reference interfaces, each reference interface being associated with a target interface in the target. The method comprises, for at least one pair of successive interfaces, defining four intersections between a current alignment and the reference interfaces or the associated target interfaces, and modifying the coordinates for each current corner of the alignment on the basis of the initial coordinates of the current corner, and the four defined intersections, the modified coordinates of the current corner being on the current alignment.

主权项

1. A method for adapting a mesh model of a geological subsurface obtained using measurements of said geological subsurface, to match it to a target,
said mesh model comprising a plurality of reference interfaces comprising a sequence, each reference interface being associated with a target interface in said target, wherein the method comprises:
for at least one pair of successive interfaces in the sequence of the plurality of interfaces formed by a first reference interface and a second reference interface, the model comprising a plurality of alignments of mesh cell corners between said first interface and said second interface, these alignments forming mesh cell edges, each corner having initial coordinates in the model and for each current alignment among said plurality of cell corners:
determining a first intersection between the current alignment and said first reference interface;determining a second intersection between the current alignment and said second reference interface;determining a third intersection between the current alignment and the target interface associated with said first reference interface;determining a fourth intersection between the current alignment and the target interface associated with said second reference interface;modifying the coordinates for each current corner of the alignment as a function of the initial coordinates of said current corner, of the first intersection, second intersection, third intersection, and fourth intersection, the modified coordinates of said current corner being on the current alignment.