Quantitative porosity profiles and wettability contrast visualisation in sandstone by CPMG imaging.
CPMG imaging is applied to the visualisation of porosity and wetting heterogeneities in water saturated sandstone samples at 0.1 T. Porosity profiles from NMR imaging are in agreement within 1% with the standard core analysis. T2 calculated profiles show a factor greater than two between water-wet and oil-wet samples; thus, wettability contrast can be easily visualised.
Bobroff
S
S
Institut d'Electronique Fondamentale (CNRS URA22), Orsay Cedex France.
Guillot
G
G
Rivière
C
C
Cuiec
L
L
Roussel
J C
JC
D008279:Magnetic Resonance Imaging; D009682:Magnetic Resonance Spectroscopy; D010578:Petroleum; D016062:Porosity; D014867:Water; D017155:Wettability
D010578:Petroleum; D014867:Water