A NMR characterisation of a banded sandstone.
1H-nuclear magnetic resonance (NMR) measurements have been carried out on a banded sandstone to investigate the effects of structural inhomogeneities on the fluid dynamics of the sample as a whole. The results obtained from average propagator measurements (the probability of a displacement z in a time delta or P delta (z)) using pulsed-field-gradient techniques have been compared to those obtained from a study of a homogeneous sandstone. Relaxation has been used to derive the pore sizes for the differing bands and have been found to correlate with flow velocities within the bands.
Bolam
A C
AC
Department of Chemistry, University of Nottingham, University Park, UK.
Packer
K J
KJ
D004058:Diffusion; D019015:Geologic Sediments / Q000032:analysis*; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D009821:Oils; D016062:Porosity; D012212:Rheology; D014867:Water
D009821:Oils; D014867:Water