Quantitative 1D saturation profiles on chalk by NMR.
作者信息
Olsen D, Topp S, Stensgaard A, Nørgaard J V, Reffstrup J
机构信息
Geological Survey of Denmark, Copenhagen, Denmark.
出版信息
Magn Reson Imaging. 1996;14(7-8):847-51. doi: 10.1016/s0730-725x(96)00214-7.
PMID:8970093
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.
摘要
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