Remember Me
Or use your Academic/Social account:


Or use your Academic/Social account:


You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.


Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message


Verify Password:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Shukla, Matsyendra Nath; Vallatos, Antoine; Phoenix, Vernon R.; Holmes, William M. (2016)
Publisher: Elsevier BV
Journal: Journal of Magnetic Resonance
Languages: English
Types: Article
Subjects: Condensed Matter Physics, Biochemistry, Biophysics, Nuclear and High Energy Physics
Spatially resolved Pulsed Field Gradient (PFG) velocimetry techniques can provide precious information concerning flow through opaque systems, including rocks. This velocimetry data is used to enhance flow models in a wide range of systems, from oil behaviour in reservoir rocks to contaminant transport in aquifers. Phase-shift velocimetry is the fastest way to produce velocity maps but critical issues have been reported when studying flow through rocks and porous media, leading to inaccurate results. Combining PFG measurements for flow through Bentheimer sandstone with simulations, we demonstrate that asymmetries in the molecular displacement distributions within each voxel are the main source of phase-shift velocimetry errors. We show that when flow-related average molecular displacements are negligible compared to self-diffusion ones, symmetric displacement distributions can be obtained while phase measurement noise is minimised. We elaborate a complete method for the production of accurate phase-shift velocimetry maps in rocks and low porosity media and demonstrate its validity for a range of flow rates. This development of accurate phase-shift velocimetry now enables more rapid and accurate velocity analysis, potentially helping to inform both industrial applications and theoretical models.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • [1] W.M. Holmes, K.J. Packer, Investigation of two phase flow and phase trapping by secondary imbibition within fontainebleau sandstone, Magn. Reson. Imaging 21 (2003) 389-391.
    • [2] S. Lakshmanan, W.M. Holmes, W.T. Sloan, V.R. Phoenix, Nanoparticle transport in saturated porous medium using magnetic resonance imaging, Chem. Eng. J. 266 (2015) 156-162.
    • [3] M.W. Becker, M. Pelc, R.V. Mazurchuk, J. Spernyak, Magnetic resonance imaging of dense and light non-aqueous phase liquid in a rock fracture, Geophys. Res. Lett. 30 (2003).
    • [4] M.A. Bernstein, K.F. King, Z.J. Zhou, Handbook of MRI Pulse Sequences, Academic Press, Amsterdam, Boston, 2004.
    • [5] E.O. Stejskal, J.E. Tanner, Spin diffusion measurements: spin echoes in the presence of a time-dependent field gradient, J. Chem. Phys. 42 (1965) 288-292.
    • [6] R.J. Hayward, Tomlinso Dj, K.J. Packer, Pulsed field-gradient spin-echo NMR studies of flow in fluids, Mol. Phys. 23 (1972). 1083.
    • [7] P.T. Callaghan, Y. Xia, Velocity and diffusion imaging in dynamic NMR microscopy, J. Magn. Reson. 91 (1991) 326-352.
    • [8] W.M. Holmes, M.R. Lopez-Gonzalez, P.T. Callaghan, Fluctuations in shearbanded flow seen by NMR velocimetry, Europhys. Lett. 64 (2003) 274-280.
    • [9] B. Manz, L.F. Gladden, P.B. Warren, Flow and dispersion in porous media: Lattice-Boltzmann and NMR studies, Aiche J. 45 (1999) 1845-1854.
    • [10] W.A. Holmes, K.J. Packer, Investigation of phase trapping by secondary imbibition within Fontainebleau sandstone, Chem. Eng. Sci. 59 (2004) 2891- 2898.
    • [11] K. Romanenko, D. Xiao, B.J. Balcom, Velocity field measurements in sedimentary rock cores by magnetization prepared 3D SPRITE, J. Magn. Reson. 223 (2012) 120-128.
    • [12] C.T.P. Chang, A.T. Watson, NMR imaging of flow velocity in porous media, Aiche J. 45 (1999) 437-444.
    • [13] M.R. Merrill, Local velocity and porosity measurements inside casper sandstone using MRI, Aiche J. 40 (1994) 1262-1267.
    • [14] R.A. Waggoner, E. Fukushima, Velocity distribution of slow fluid flows in Bentheimer sandstone: an NMRI and propagator study, Magn. Reson. Imaging 14 (1996) 1085-1091.
    • [15] N. Spindler, P. Galvosas, A. Pohlmeier, H. Vereecken, NMR velocimetry with 13- interval stimulated echo multi-slice imaging in natural porous media under low flow rates, J. Magn. Reson. 212 (2011) 216-223.
    • [16] Q. Chen, W. Kinzelbach, S. Oswald, Nuclear magnetic resonance imaging for studies of flow and transport in porous media, J. Environ. Qual. 31 (2002) 477- 486.
    • [17] S. Ljunggren, A simple graphical representation of fourier-based imaging methods, J. Magn. Reson. 54 (1983) 338-343.
    • [18] P.R. Moran, A flow velocity zeugmatographic interlace for NMR imaging in human body, Magn. Reson. Imaging 1 (1982) 197-203.
    • [19] L. Li, Q. Chen, A.E. Marble, L. Romero-Zeron, B. Newling, B.J. Balcom, Flow imaging of fluids in porous media by magnetization prepared centric-scan SPRITE, J. Magn. Reson. 197 (2009) 1-8.
    • [20] C.L. Dumoulin, H.R. Hart, Magnetic-resonance angiography, Radiology 161 (1986) 717-720.
    • [21] A. Caprihan, S.A. Altobelli, E. Benitezread, Flow-velocity imaging from linearregression of phase images with techniques for reducing eddy-current effects, J. Magn. Reson. 90 (1990) 71-89.
    • [22] P.R. Bevington, Data Reduction and Error Analysis for the Physical Sciences, McGraw-Hill, New York, 1969.
    • [23] R.M. Cotts, M.J.R. Hoch, T. Sun, J.T. Markert, Pulsed field gradient stimulated echo methods for improved NMR diffusion measurements in heterogeneous systems, J. Magn. Reson. 83 (1989) 252-266.
    • [24] C.M. Boyce, N.P. Rice, A.J. Sederman, J.S. Dennis, D.J. Holland, 11-interval PFG pulse sequence for improved measurement of fast velocities of fluids with high diffusivity in systems with short T2, J. Magn. Reson. Imaging 265 (2016) 67- 76.
    • [25] K. Romanenko, B.J. Balcom, Permeability mapping in naturally heterogeneous sandstone cores by magnetization prepared centric-scan sprite, Aiche J. 58 (2012) 3916-3926.
    • [26] U.M. Scheven, J.G. Seland, D.G. Cory, NMR propagator measurements on flow through a random pack of porous glass beads and how they are affected by dispersion, relaxation, and internal field inhomogeneities, Phys. Rev. E 69 (2004).
    • [27] H.K. Liaw, R. Kulkarni, S.H. Chen, A.T. Watson, Characterization of fluid distributions in porous media by NMR techniques, Aiche J. 42 (1996) 538-546.
  • No related research data.
  • Discovered through pilot similarity algorithms. Send us your feedback.

Share - Bookmark

Cite this article