title: Quantitative longitudinal fluid saturation profiles with a slice-selected CPMG sequence.
abstract: A technique for obtaining quantitative longitudinal saturation/porosity profiles of rock cores which are longer than the NMR coil has been developed. The slice-selected experiment uses a prefocused pulse in conjunction with a magnetic field gradient for the localization and a CPMG sequence to sample the data. A variety of rock core samples has been studied ranging from limestones to shaly sandstones. Comparison of the relaxation decay curves obtained from these experiments and the bulk experiments show that reliable localized relaxation data are obtained.
authors.affiliation: Herchel Smith Laboratory for Medicinal Chemistry, University of Cambridge School of Clinical Medicine, UK.
authors.forename: G K
authors.initials: GK
authors.lastname: Pierens
authors.forename: M
authors.initials: M
authors.lastname: Peyron
authors.forename: A J
authors.initials: AJ
authors.lastname: Lucas
authors.forename: T A
authors.initials: TA
authors.lastname: Carpenter
authors.forename: L D
authors.initials: LD
authors.lastname: Hall
authors.forename: G F
authors.initials: GF
authors.lastname: Potter
authors.forename: R C
authors.initials: RC
authors.lastname: Stewart
authors.forename: D W
authors.initials: DW
authors.lastname: Phelps
mesh_terms: D002119:Calcium Carbonate; D002254:Carbonates; D009682:Magnetic Resonance Spectroscopy; D016062:Porosity
chemical_list: D002254:Carbonates; D002119:Calcium Carbonate