NMR-propagator measurements in porous media in the presence of surface relaxation and internal fields.
We measure the probability distribution P(zeta)--the propagator--of molecular displacements on Stokes flow through a pack of microporous glass beads and a carbonate rock. An optimized sampling of q-space is introduced for the measurement of a P(zeta) and its first moment zeta. Our results delineate and provide an understanding of the experimental regimes where background fields and surface relaxation distort the measured propagators.
Scheven
Ulrich M
UM
Schlumberger-Cambridge Research, High Cross, Madingley Road, Cambridge CB3 0EL, UK. scheven@slb.com
Seland
John G
JG
Cory
David G
DG
D002254:Carbonates / Q000737:chemistry; D019015:Geologic Sediments / Q000737:chemistry; D005898:Glass; D009682:Magnetic Resonance Spectroscopy; D016062:Porosity; D012212:Rheology; D013499:Surface Properties
D002254:Carbonates