Successful Sampling Strategy Advances Laboratory Studies of NMR Logging in Unconsolidated Aquifers

Ahmad A. Behroozmand, Rosemary Knight, Mike Müller-Petke, Esben Auken, Adrian A.S. Barfod, Ty P.A. Ferré, Troels N. Vilhelmsen, Carole D. Johnson, Anders V. Christiansen

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Abstract

The nuclear magnetic resonance (NMR) technique has become popular in groundwater studies because it responds directly to the presence and mobility of water in a porous medium. There is a need to conduct laboratory experiments to aid in the development of NMR hydraulic conductivity models, as is typically done in the petroleum industry. However, the challenge has been obtaining high-quality laboratory samples from unconsolidated aquifers. At a study site in Denmark, we employed sonic drilling, which minimizes the disturbance of the surrounding material, and extracted twelve 7.6 cm diameter samples for laboratory measurements. We present a detailed comparison of the acquired laboratory and logging NMR data. The agreement observed between the laboratory and logging data suggests that the methodologies proposed in this study provide good conditions for studying NMR measurements of unconsolidated near-surface aquifers. Finally, we show how laboratory sample size and condition impact the NMR measurements.

Original languageEnglish (US)
Pages (from-to)11,021-11,029
JournalGeophysical Research Letters
Volume44
Issue number21
DOIs
StatePublished - Nov 16 2017

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Keywords

  • NMR
  • advanced sampling
  • unconsolidated aquifers

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Behroozmand, A. A., Knight, R., Müller-Petke, M., Auken, E., Barfod, A. A. S., Ferré, T. P. A., Vilhelmsen, T. N., Johnson, C. D., & Christiansen, A. V. (2017). Successful Sampling Strategy Advances Laboratory Studies of NMR Logging in Unconsolidated Aquifers. Geophysical Research Letters, 44(21), 11,021-11,029. https://doi.org/10.1002/2017GL074999