Williamson, NH;
Röding, M;
Liu, H;
Galvosas, P;
Miklavcic, SJ;
Nydén, M;
(2018)
The pseudo 2-D relaxation model for obtaining T1-T2 relationships from 1-D T1 and T2 measurements of fluid in porous media.
Microporous and Mesoporous Materials
, 269
pp. 191-194.
10.1016/j.micromeso.2017.05.056.
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Abstract
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.
| Type: | Article |
|---|---|
| Title: | The pseudo 2-D relaxation model for obtaining T1-T2 relationships from 1-D T1 and T2 measurements of fluid in porous media |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.micromeso.2017.05.056 |
| Publisher version: | http://doi.org/10.1016/j.micromeso.2017.05.056 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Relaxation correlation, Lognormal distribution, Inverse-gamma distribution, Magnetic resonance in porous media, Heterogeneity, Multidimensional distribution function |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1571247 |
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