Quantitative longitudinal fluid saturation profiles with a slice-selected CPMG sequence
| Autor: | Laurance D. Hall, M. Peyron, Alun J. Lucas, Robert Charles. Stewart, T. A. Carpenter, Gregory K. Pierens, G.F. Potter, D.W. Phelps |
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| Rok vydání: | 1994 |
| Předmět: |
Materials science
Magnetic Resonance Spectroscopy Biomedical Engineering Biophysics Carbonates Mineralogy Fluid saturation Magnetic field gradient Decay curve Physics::Geophysics Calcium Carbonate Electromagnetic coil Radiology Nuclear Medicine and imaging Wafer Rock core Porosity Saturation (magnetic) |
| Zdroj: | Magnetic resonance imaging. 12(2) |
| ISSN: | 0730-725X |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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