Patent ID: 7373288

Claim:
A method for simulating production of a multilayer porous medium modelled by a porous matrix saturated by a liquid phase and by fractures saturated by a gas phase, by simulating at least one compositional and multiphase transfer between the porous matrix and the fractures, comprising: constructing a geologic model representative of natural fracture networks of the medium and converting the geologic model to an equivalent double porosity model; defining a model of diffusion of the gas phase between the fractures and the matrix wherein a gas-liquid front exhibiting a quasi-static equilibrium at interfaces is established from an initial time and progresses at a velocity controlled by diffusion transfers within each phase, which transfers involve a difference between concentration within each phase and a concentration of equilibrium between the phases, as well as a variable exchange distance expressed as a function of saturation of the matrix; and simulating production of the medium by simulating at least one of the compositional and multiphase transfers by diffusion by a double porosity simulator and the model of the diffusion.