USE OF A REPRESENTATIVE ELEMENTARY VOLUME FOR DETERMINING A SUB-SET VOLUME IN A GROUND MODEL OF A ZONE OF INTEREST

摘要

The method of determining a subset volume in a 3D geocellular model of an oil and gas reservoir comprises creating (101) a 3D geocellular grid of the deposit, defining (102) a section Thick transverse for a zone of interest in the 3D geocell grid, the iterative increase (103b) of the volume of the thick cross-section of a predetermined number of cells on each side, the displacement of the thick cross-section through the grid 3D geocell and the realization (103) of an analysis of a representative elemental volume (REV) based on the porosity for the thick cross section obtained. One embodiment allows incorporation of the REV analysis to determine a subset pool model volume that is smaller than the full field model, but representative of the petrophysical property distribution in the complete model of the field. field. This is done so that the subset models act as theoretical proximity servers for complete field models and allow for more detailed analysis before designing the complete field model.