PRODUCIBLE FLUID VOLUMES IN POROUS MEDIA DETERMINED BY PULSED FIELD GRADIENT NUCLEAR MAGNETIC RESONANCE

摘要

The present invention is a method to determine the bound and free fluid index of fluids in porous media by pulsed field gradient (PFG)NMR diffusion measurements. The PFG NMR signal is evaluated using a two-fluid model that describes the self diffusion coefficients for the fluid fractions with low and high translational mobilities.