Fremgangsmåte for å generere et hybridgitter som tillater modellering av en heterogen formasjon som krysses av en eller flere brönner

摘要

- method for generating a hybrid grid making it possible to model a heterogeneous formation crossed by one or several pipes, such as, for example, an underground formation, which has been drilled, one or several wells for the purpose of forming a model representing, for example of the fluid flows in this medium in accordance with a numerical pattern defined coefficient. - the method essentially comprises the combination of a first structured grid for generating a wire-mesh model the heterogeneous medium while respecting its discontinuities, a second radial type structured grid for generating a wire-mesh model a zone around each duct or tube, which makes it possible to better follow the specific stresses linked to the flows in this zone, and the grids are not structured transition that is interposed between the first grid, and each second grid pattern of wells. It is possible to combine various meshings each with its own methods of formation of illustration and exploration, structured grids advantageous in that they facilitate the control and the understanding of the images that is formed of the azimuth and of the grids are not structured more flexible in order to produce the mesh of the zones complex. [0025] - applications to the hydrocarbon reservoir simulators, for example.