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 DESCRIBED THE SELF DIFFUSION COEFFICIENTS FOR THE FLUID FRACTIONS WITH LOW AND HIGH TRANSLATIONAL MOBILITIES. (FIG.2)