Patent ID: 7047165
Filing Date: 2006-05-16
Classification: G01V,G06T

Abstract:
1. A computer implemented method of generating a hybrid grid applicable to a heterogeneous reservoir crossed by at least one geometric discontinuity of known geometry, in order to form a model representative of fluid flows in the reservoir in accordance with a defined numerical pattern, a structure of the reservoir being known a priori from available data acquired through in-situ measurements, analyses and/or interpretations of seismic images of the reservoir, comprising: forming at least one first structured grid for gridding of at least one part of the reservoir; forming at least one second structured grid for gridding of another part of the reservoir comprising the discontinuity; forming at least one cavity between the at least one first structured grid and each of the at least one second structured grid with a sufficient size to allow formation of at least one unstructured grid providing transition between the structured grids; forming each unstructured grid which provides transition by use of a power diagram and by imposing conformity of each unstructured grid providing the transition with walls of each cavity; and generating the hybrid grid by combination of the at least one first structured grid, the at least one second structured grid and the at least one unstructured transition grid.