title: Quantitative estimates of porous media wettability from proton NMR measurements.
abstract: Nuclear magnetic resonance (NMR) relaxation time distributions provide information on the abundance and distribution of two immiscible fluids in the pores of fine-grain chalk samples. A model based on relative shifts of the water-relaxation component as a function of saturation results in a wettability index that is strongly correlated with independent dynamic measurements of wettability. Scales of wetting-phase film thickness for NMR and dynamic measurements explain differences in results between the two methods.
authors.affiliation: Phillips Petroleum Co., Bartlesville, OK 74004, USA. howard@ppco.com
authors.forename: J J
authors.initials: JJ
authors.lastname: Howard
mesh_terms: D002119:Calcium Carbonate; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008899:Mineral Oil; D016062:Porosity; D011506:Proteins; D014783:Viscosity; D017155:Wettability
chemical_list: D011506:Proteins; D008899:Mineral Oil; D002119:Calcium Carbonate