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Determining fluid saturations during multiphase flow experiments by NMR imaging techniques
Author(s) -
Chen Songhua,
Qin Fangfang,
Watson A. Ted
Publication year - 1994
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690400714
Subject(s) - saturation (graph theory) , extrapolation , porous medium , porosity , relaxation (psychology) , laser linewidth , transverse plane , materials science , multiphase flow , mechanics , flow (mathematics) , nuclear magnetic resonance , optics , physics , mathematics , engineering , composite material , psychology , mathematical analysis , social psychology , laser , structural engineering , combinatorics
The quantitative determination of porosity and saturation distributions in porous media using unclear magnetic resonance imaging techniques is addresed. A method based on multiple image acquisitions with extrapolation within a model of transverse relaxation was investigated for new experimental situations. The determination of saturation was validated with limestone and sandstone samples. Experimental evidence for dependencies of transverse relaxation and linewidth on saturation is discussed, as well as their impact on image resolution and quantitation. An automatic production measurement device for independent verification of average saturations during dynamic experiments is investigated.