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Quantitative porosity profiles and wettability contrast visualisation in sandstone by CPMG imaging
S Bobroff1, G Guillot, C Rivière
1Institut d'Electronique Fondamentale (CNRS URA22), Orsay Cedex France.
Magnetic Resonance Imaging
|January 1, 1996
Abstract:
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.