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The pseudo 2-D relaxation model for obtaining T1-T2 relationships from 1-D T1 and T2 measurements of fluid in porous media
University of South Australia, Australia.
RISE - Research Institutes of Sweden, Biovetenskap och material, Jordbruk och livsmedel. University College London, Australia.ORCID-id: 0000-0002-5956-9934
Victoria University of Wellington, New Zealand; Limecho Technology Limited Company, China.
Victoria University of Wellington, New Zealand.
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2018 (Engelska)Ingår i: Microporous and Mesoporous Materials, ISSN 1387-1811, E-ISSN 1873-3093, Vol. 269, s. 191-194Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

NMR spin-lattice (T1) and spin-spin (T2) relaxation times and their inter-relation possess information on fluid behaviour in porous media. To elicit this information we utilize the pseudo 2-D relaxation model (P2DRM), which deduces the T1-T2 functional relationship from independent 1-D T1 and T2 measurements. Through model simulations we show empirically that the P2DRM accurately estimates T1-T2 relationships even when the marginal distributions of the true joint T1-T2 distribution are unknown or cannot be modeled. Estimates of the T1:. T2 ratio for fluid interacting with pore surfaces remain robust when the P2DRM is applied to simulations of rapidly acquired data. Therefore, the P2DRM can be useful in situations where experimental time is limited.

Ort, förlag, år, upplaga, sidor
2018. Vol. 269, s. 191-194
Nyckelord [en]
Heterogeneity, Inverse-gamma distribution, Lognormal distribution, Magnetic resonance in porous media, Multidimensional distribution function, Relaxation correlation, Magnetic resonance, Nuclear magnetic resonance, Porous materials, Inverse gamma distribution, Log-normal distribution, Multidimensional distributions, Relaxation correlations, Distribution functions
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Naturvetenskap
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URN: urn:nbn:se:ri:diva-30984DOI: 10.1016/j.micromeso.2017.05.056Scopus ID: 2-s2.0-85026815139OAI: oai:DiVA.org:ri-30984DiVA, id: diva2:1138075
Tillgänglig från: 2017-09-04 Skapad: 2017-09-04 Senast uppdaterad: 2019-01-03Bibliografiskt granskad

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