Patent ID: 6094619
Filing Date: 2000-07-25
Classification: G01V

Abstract:
A method for modelling, from a 3D image of a fractured medium such as a geologic formation consisting of a porous matrix crossed by at least one network of fractures, hydraulic parameters providing a best large-scale characterization possible of the fractured medium, in order to interpret well tests, comprising:forming a grid pattern for discretizing the medium;solving using the grid pattern, equations modelling diffusion of the pressure in the medium; anddetermining variations with time of a large-scale transfer function (f(t), f(s)) characterizing fluid flows from the porous matrix to the at least one network of fractures, by applying continuous-time random walks to the fluid particles by associating therewith a state function (.epsilon.(.tau.)) indicative of a presence of the fluid particles either in the matrix or in the at least one network of fractures.