The present invention relates to a method for optimizing a reservoir of fluid traversed by a fracture network. For this process, the deposit is discretized into a mesh representation, a double-medium approach is used, and the exchange flux between the meshes is determined, as well as corrective factors. The corrective factors are dependent on the initial pressure and the minimum production pressure of the deposit. By means of these fluxes and these corrective factors, the flows of fluid (s) in the deposit are simulated.
展开▼