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Interpretation of restricted diffusion in sandstones with internal field gradients.

Abstract：

:We report on experiments to characterize internal magnetic field gradients that are caused by magnetic susceptibility differences between the solid phase and the fluids filling the pore space. Our measurements focus on low-field relaxometry of brine and oil in sandstones from various reservoirs around the world. Our results show the need to understand the dependence of internal field gradients on diffusion length, pore size- and fluid distribution in order to predict the impact of internal gradients on the interpretation of NMR experiments.

journal_name

Magn Reson Imaging

journal_title

Magnetic resonance imaging

authors

Appel M,Freeman JJ,Gardner JS,Hirasaki GH,Zhang QG,Shafer JL

doi

10.1016/s0730-725x(01)00287-9

subject

Has Abstract

pub_date

2001-04-01 00:00:00

pages

535-7

issue

3-4

eissn

0730-725X

issn

1873-5894

pii

S0730-725X(01)00287-9

journal_volume

19

pub_type

杂志文章

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