For a hybrid grid generation in accordance with three dimensions of a formation crossing by one or several geometrical for the purpose of carrying out simulations

摘要

P - method for generating a hybrid mesh, in order to carry out simulations in accordance with a numerical pattern defined, in three dimensions and which is acceptable to the direction of the digital circuit diagram of a heterogeneous formation crossed by one or several geometric discontinuities such as, for example, an underground formation where it has been drilled, one or several wells, or a fractured, by combining the structured grids and the grids not structured. - the hybrid grid is made by associating a structured grid for generating a wire-mesh model the heterogeneous medium to the second structured grids for generating a wire-mesh model a zone around the discontinuities. It generates in a first time, an entirely automatic manner, a cavity corresponding to the two criteria of minimum size and delaunay acceptability. It is then constructed a mesh of transition corresponding to the constraints of the digital circuit is used for the simulation. Finally, it improves the quality of the mesh of the transition at the time in the quality control in the direction of the diagram, in order to define a mesh of transition perfectly acceptable to the direction of the numerical pattern chosen - applications in simulators in order to hydrocarbon deposits, for example. / p