Details
| Original language | English |
|---|---|
| Pages (from-to) | 11,021-11,029 |
| Journal | Geophysical research letters |
| Volume | 44 |
| Issue number | 21 |
| Publication status | Published - 16 Nov 2017 |
| Externally published | Yes |
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.
Keywords
- advanced sampling, NMR, unconsolidated aquifers
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geophysics
- Earth and Planetary Sciences(all)
- General Earth and Planetary Sciences
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In: Geophysical research letters, Vol. 44, No. 21, 16.11.2017, p. 11,021-11,029.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Successful Sampling Strategy Advances Laboratory Studies of NMR Logging in Unconsolidated Aquifers
AU - Behroozmand, Ahmad A.
AU - Knight, Rosemary
AU - Müller-Petke, Mike
AU - Auken, Esben
AU - Barfod, Adrian A.S.
AU - Ferré, Ty P.A.
AU - Vilhelmsen, Troels N.
AU - Johnson, Carole D.
AU - Christiansen, Anders V.
N1 - Funding information: Ahmad A. Behroozmand was sup ported, in part, by funding from the Danish Council for Independent Research, FNU. Additional funding for the completion of this project was pro vided by Stanford University. The field data were acquired as part of the Danish Council for Strategic Research Project titled ‘HyGEM-integrating geophysics, geology and hydrology for improved groundwater and environmental management’. The first round of our laboratory NMR experiments was conducted at the Chevron Energy Technology Company, Richmond, California. Leibniz Institute of Applied Geophysics (LIAG) provided the logging NMR and magnetic susceptibility equipment. We thank Thomas Grelle and Jan-Thorsten Blanke, LIAG, for their assistance in the field. All data used in this study are available at https://stanford.box.com/s/ uk1rhkskho0nmjim9q62bq1tgk8rk8ds.
PY - 2017/11/16
Y1 - 2017/11/16
N2 - 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.
AB - 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.
KW - advanced sampling
KW - NMR
KW - unconsolidated aquifers
UR - http://www.scopus.com/inward/record.url?scp=85032979309&partnerID=8YFLogxK
U2 - 10.1002/2017gl074999
DO - 10.1002/2017gl074999
M3 - Article
AN - SCOPUS:85032979309
VL - 44
SP - 11,021-11,029
JO - Geophysical research letters
JF - Geophysical research letters
SN - 0094-8276
IS - 21
ER -