METHOD FOR SIMPLIFYING THE MODELING OF A POROUS GEOLOGICAL ENVIRONMENT CROSSED BY AN IRREGULAR FRACTURE NETWORK

摘要

P Method allows a simplified modeling of a porous heterogeneous geological medium (such as a reservoir crossed by an irregular network of cracks for example) in the form of a transposed medium or equivalent so that the transposed medium is equivalent to the original medium, relative to a specific type of physical transfer function (known for the transposed medium). It comprises: BR/ a) the formation of an image in at least two dimensions of the original geological medium in the form of a series of pixels and the association with each pixel of the series of an initial value particular for this function, BR/ b) the stepwise determination of values to be assigned for the physical transfer function to each pixel of the series (such as the minimum distance separating the pixel from the nearest crack) with reference to values of the function assigned to pixels adjacent to the image, and BR/ c) determining a physical property of the transposed medium or equivalent by identifying the values of the transfer function known for the medium transposed with the Origin medium transfer function values determined in stages. The physical transfer function may represent variations between different parts of the geological medium, for example distances or transmissivities or heat transfers (between a reservoir and a well passing through the reservoir for example), etc. BR/ Application to the determination of a transposed medium providing the same fluid recovery during a capillary imbibing process as the actual medium. / P