title: Quantitative 1D saturation profiles on chalk by NMR.
abstract: Quantitative one-dimensional saturation profiles showing the distribution of water and oil in chalk core samples are calculated from NMR measurements utilizing a 1D CSI spectroscopy pulse sequence. Saturation profiles may be acquired under conditions of fluid flow through the sample. Results reveal that strong saturation gradients exist in chalk core samples after core floods, due to capillary effects. The method is useful in analysis of corefloods, e.g., for determination of capillary pressure functions.
authors.affiliation: Geological Survey of Denmark, Copenhagen, Denmark.
authors.forename: D
authors.initials: D
authors.lastname: Olsen
authors.forename: S
authors.initials: S
authors.lastname: Topp
authors.forename: A
authors.initials: A
authors.lastname: Stensgaard
authors.forename: J V
authors.initials: JV
authors.lastname: Nørgaard
authors.forename: J
authors.initials: J
authors.lastname: Reffstrup
mesh_terms: D002119:Calcium Carbonate; D009682:Magnetic Resonance Spectroscopy; D010578:Petroleum; D014867:Water
chemical_list: D010578:Petroleum; D014867:Water; D002119:Calcium Carbonate