Well logging method for determining fractional flow characteristics of earth formations

A method for producing a log of fractional flow characteristics of formations surrounding an earth borehole, comprising the steps of:

• a) suspending a logging tool in the borehole;
• b) producing several resistivity measurements, having respectively different radial depths of investigation, as said logging tool is moved through said borehole, to obtain several resistivity logs;
• c) selecting model fractional flow parameters;
• d) determining a formation conductivity model as a function of said model fractional flow parameters;
• e) generating several simulated resistivity log values at said respective radial depths of investigation from said, formation conductivity model;
• f) comparing said simulated resistivity log values with values from said resistivity logs obtained from said resistivity measurements to obtain an error indication;
• g) modifying said model fractional flow parameters;
• h) repeating steps (d) through (g) until a predetermined criterion is met;
• and
• i) outputting said modified fractional flow parameters as formation fractional flow characteristics.