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Low‐Field Borehole NMR Applications in the Near‐Surface Environment

Journal Article · · Vadose Zone Journal
 [1];  [2]
  1. Dep. of Chemical and Biological Engineering Montana State Univ. Bozeman MT 59717, Center for Biofilm Engineering Montana State Univ. Bozeman MT 59717
  2. Center for Biofilm Engineering Montana State Univ. Bozeman MT 59717, Dep. of Mechanical and Industrial Engineering Montana State Univ. Bozeman MT 59717
Core Ideas

Low‐field borehole NMR characterizes subsurface heterogeneities from pore to macro scales.

Borehole NMR is sensitive to biogeochemical processes and conversions in the subsurface.

Development of borehole NMR benefits hydrogeology, soil management, and engineering.

The inherent heterogeneity of the near subsurface (<200 m below the ground surface) presents challenges for agricultural water management, hydrogeologic characterization, and engineering, among other fields. Borehole nuclear magnetic resonance (NMR) has the potential not only to describe this heterogeneity in space nondestructively but also to monitor physical and chemical changes in the subsurface with time. Nuclear magnetic resonance is sensitive to parameters of interest like porosity and permeability, saturation, fluid viscosity, and formation mineralogy. Borehole NMR tools have been used to measure soil moisture in model soils, and recent advances in low‐field borehole NMR instrumentation allow estimation of hydraulic properties of unconsolidated aquifers. We also demonstrate the potential for low‐field borehole NMR tools to monitor field‐relevant biogeochemical processes like biofilm accumulation and microbially induced calcite precipitation at laboratory and field scales. Finally, we address some remaining challenges and areas of future research, as well as other possible applications where borehole NMR could provide valuable complementary data.

Research Organization:
Vista Clara Inc., Mukilteo, WA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0006376
OSTI ID:
1787377
Alternate ID(s):
OSTI ID: 1541972
OSTI ID: 1545324
OSTI ID: 1787384
Journal Information:
Vadose Zone Journal, Journal Name: Vadose Zone Journal Journal Issue: 1 Vol. 17; ISSN 1539-1663
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
United States
Language:
English

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