Method in order to model the distribution of the pores of a sample of variable porosity

摘要

The pore-size distribution of a porous sample of variable porosity is modeled achievement of, allowing laboratory studies on the behavior of the medium modeled in relation to fluids. The porosity of the porous medium is modeled on one or more parting surfaces by means of a network (R) of intersecting channels (C) whose nodes form pores (P), the size of these channels showing physical properties of the medium and being selected from one or more discrete channel size distributions. In order to model the porosity of a heterogeneous sample exhibiting very different porosity zones, several discrete channel distributions are preferably used, these distributions being disjoint or not, and modeling with different zones, zones of low permeability and zones of higher permeability. The geometric model formed is transposed into a physical model by using for example a controlled laser from a predesigned geometric model in order to form, on a material reacting to the action of the light, a network of channels reproducing the porosity of the sample on one or more parting surfaces and to join them together. The method can be used notably for modeling of porous rocks taken from hydrocarbon reservoirs.