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.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/626433 |
| Date | 16 November 2017 |
| Creators | Behroozmand, Ahmad A., Knight, Rosemary, Müller-Petke, Mike, Auken, Esben, Barfod, Adrian A. S., Ferré, Ty P. A., Vilhelmsen, Troels N., Johnson, Carole D., Christiansen, Anders V. |
| Contributors | Univ Arizona, Dept Hydrol & Water Resources, Department of Geophysics; Stanford University; Stanford CA USA, Department of Geophysics; Stanford University; Stanford CA USA, Leibniz Institute for Applied Geophysics; Hanover Germany, Department of Geoscience; Aarhus University; Aarhus Denmark, Geological Survey of Denmark and Greenland; Copenhagen Denmark, Department of Hydrology and Water Resources; University of Arizona; Tucson AZ USA, Department of Geoscience; Aarhus University; Aarhus Denmark, Branch of Geophysics; USGS office of Groundwater; Storrs CT USA, Department of Geoscience; Aarhus University; Aarhus Denmark |
| Publisher | AMER GEOPHYSICAL UNION |
| Source Sets | University of Arizona |
| Language | English |
| Detected Language | English |
| Type | Article |
| Rights | ©2017. American Geophysical Union. All Rights Reserved. |
| Relation | http://doi.wiley.com/10.1002/2017GL074999 |
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