A practical rock physics model for AvO studies in clastics and carbonates

Abstract

A rock physics model for typical oil company AvO modelling and inversion applications would ideally possess the following attributes: 1) a sound physical basis; 2) as few free variables as possible; and 3) wo uld predict measured P- and S-wave velocities for any lithology, porosity, pressure, temperature, pore-shape and pore-fluid. A formulation based on the doctoral research of Y. F. Sun into the dynamical theory of fractured porous media strikes a practical balance between these attributes, which are to some extent conflicting.