METHOD FOR THE CHARACTERIZATION OF GEOLOGICAL FORMATIONS

摘要

A method for determining the water saturation of an underground formation traversed by a borehole, the method comprising: - determining a first parameter (µ) that is representative of the critical exponent of the electrical conductivity of the formation; determining a second parameter (Wc or Sc or ?c) that is representative of the formation percolation threshold; - measuring a first set of formation properties; and - combining said first set of formation properties, first and second parameters in order to determine the water saturation (Sw) of said underground formation.