| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5407281 | Journal of Magnetic Resonance | 2008 | 6 Pages |
Abstract
NMR flow propagators have been obtained for brine flowing through Bentheimer sandstone using the rapid DiffTrain pulse sequence. In this way, 8 flow propagators at different observation times Î were acquired in 67Â mins, compared to 7Â h for the same measurements implemented with conventional pulsed field gradient (PFG) sequences. DiffTrain allows this time saving to be achieved through the acquisition of multiple displacement probability distributions over a range of Î in a single measurement. If only the propagator moments are required, this experiment time can be further reduced to 9Â mins through appropriate sparse sampling at low q values. The propagator moments obtained from DiffTrain measurements with dense and sparse q-space sampling are shown to be equivalent to those obtained from conventional PFG measurements.
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Physical and Theoretical Chemistry
Authors
J. Mitchell, A.J. Sederman, E.J. Fordham, M.L. Johns, L.F. Gladden,