title: Quantitative porosity profiles and wettability contrast visualisation in sandstone by CPMG imaging.
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.
authors.affiliation: Institut d'Electronique Fondamentale (CNRS URA22), Orsay Cedex France.
authors.forename: S
authors.initials: S
authors.lastname: Bobroff
authors.forename: G
authors.initials: G
authors.lastname: Guillot
authors.forename: C
authors.initials: C
authors.lastname: Rivière
authors.forename: L
authors.initials: L
authors.lastname: Cuiec
authors.forename: J C
authors.initials: JC
authors.lastname: Roussel
mesh_terms: D008279:Magnetic Resonance Imaging; D009682:Magnetic Resonance Spectroscopy; D010578:Petroleum; D016062:Porosity; D014867:Water; D017155:Wettability
chemical_list: D010578:Petroleum; D014867:Water