PROCESS FOR PREDICTING THE QUANTITY AND COMPOSITION OF FLUIDS PRODUCED BY MINERAL REACTIONS OPERATING IN A SEDIMENT BASIN

摘要

A method for predicting the amount and composition of fluids produced by mineral reactions operating in a sedimentary basin, and trapped with hydrocarbons in the reservoirs. Characteristic geological data of the basin are acquired and a representation of the basin is constructed by a mesh. Then, for at least one set of meshes of the mesh, and using a basin model and geological data, the following parameters are calculated: a depth of burial (z), a temperature (T) , a pore pressure (P), a volume (V) and a porosity (Φ) at successive ages (ti) representative of the geological history of the basin. In each mesh of the set of meshes, a mineralogical or chemical composition of rock is determined from the geological data of the basin. Finally, the quantity and the composition of fluids of mineral origin are determined within the set of meshes, by means of a geochemical model and an equation of state, from said parameters, of said composition, and a thermodynamic database.