Lithostratigraphic, geophysical, and hydrogeologic observations from a boring drilled to bedrock in glacial sediments near Nantucket Sound in East Falmouth, Massachusetts

Hull, Robert B.; Johnson, Carole D.; Stone, Byron D.; LeBlanc, Denis R.; McCobb, Timothy D.; Phillips, Stephanie; Pappas, Katherine L.; Lane, John W.

doi:10.3133/sir20195042

Cited by 3 publications

(1 citation statement)

References 16 publications

(44 reference statements)

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“…In some studies, estimating K from NMR logging data has used default values for the empirically calibrated parameters provided in the processing software (Vista Clara Inc. 2020); as a result, the estimates of K served as relative indicators of K . Examples include NMR logging in unconsolidated alluvium and terrace deposits in Florida (Landmeyer et al 2021), alluvium and eolian deposits in Iowa (Haj et al 2021), and a glacial aquifer on Cape Cod, Massachusetts (Hull et al 2019) to improve groundwater model parameterization and to understand regional depositional history and hydrogeology. Other studies have used coupled NMR and hydraulic measurements to determine the optimal empirically calibrated parameters so as to obtain accurate estimates of K .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Models for Estimating Hydraulic Conductivity in Glacial Aquifers with NMR Logging

et al. 2023

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Nuclear magnetic resonance (NMR) logging is a promising method for estimating hydraulic conductivity (K). During the past ∼60 years, NMR logging has been used for petroleum applications, and different models have been developed for deriving estimates of permeability. These models involve calibration parameters whose values were determined through decades of research on sandstones and carbonates. We assessed the use of five models to derive estimates of K in glacial aquifers from NMR logging data acquired in two wells at each of two field sites in central Wisconsin, USA. Measurements of K, obtained with a direct push permeameter (DPP), KDPP, were used to obtain the calibration parameters in the Schlumberger‐Doll Research, Seevers, Timur‐Coates, Kozeny‐Godefroy, and sum‐of‐echoes (SOE) models so as to predict K from the NMR data; and were also used to assess the ability of the models to predict KDPP. We obtained four well‐scale calibration parameter values for each model using the NMR and DPP measurements in each well; and one study‐scale parameter value for each model by using all data. The SOE model achieved an agreement with KDPP that matched or exceeded that of the other models. The Timur‐Coates estimates of K were found to be substantially different from KDPP. Although the well‐scale parameter values for the Schlumberger‐Doll, Seevers, and SOE models were found to vary by less than a factor of 2, more research is needed to confirm their general applicability so that site‐specific calibration is not required to obtain accurate estimates of K from NMR logging data.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Models for Estimating Hydraulic Conductivity in Glacial Aquifers with NMR Logging

et al. 2023

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Maps of elevation of top of Pierre Shale and surficial deposit thickness with hydraulic properties from borehole geophysics and aquifers tests within and near Ellsworth Air Force Base, South Dakota, 2020–21

Medler¹,

Eldridge²,

Anderson³

et al. 2023

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The U.S. Geological Survey, in cooperation with the U.S. Air Force Civil Engineer Center, collected borehole geophysical data and completed simple aquifer tests to estimate the thickness and hydraulic properties of surficial deposits. The purpose of data collection was to create generalized contour maps of the elevation of the top of the Pierre Shale and the thickness of overlying surficial deposits within and near Ellsworth Air Force Base (study area). Natural gamma and electromagnetic induction data were collected to refine or determine surficial deposit thickness at selected wells. Additionally, data from previous geophysical studies and driller logs were compiled and combined with results from natural gamma and electromagnetic induction data to provide a more spatially complete image of the subsurface. Borehole nuclear magnetic resonance (bNMR) data were collected to estimate hydraulic conductivity and water content of surficial deposits overlying Pierre Shale. Simple aquifer tests using water slugs (slug tests) were completed to estimate hydraulic conductivity of surficial deposits, and results were compared to hydraulic conductivity estimates from bNMR data. All data used to construct maps and estimate hydraulic properties are provided in an accompanying U.S. Geological Survey data release (available at https://doi.org/ 10.5066/ P9FLR79F).Generalized contour maps were constructed using results from 26 borehole geophysical logs, 35 geophysical transects from previous studies, and 304 wells with driller logs. The elevation of the top of the Pierre Shale generally followed land-surface topography, sloping from high elevations in the north to lower elevations in the south. Topographic highs of Pierre Shale, where present, could act as groundwater divides that potentially affect groundwater flow direction. Surficial deposit thickness varied spatially and ranged from 0 to 86 feet. Surficial deposits generally were thickest in higher elevation areas near ephemeral streams in the northern part of the study area. Hydraulic conductivity estimated from bNMR results using two analytical methods ranged from 0.1 to 2,314 feet per day, whereas hydraulic conductivity estimated from slug tests ranged from 0.001 to 193 feet per day. Hydraulic conductivity estimates from slug tests were plotted with surficial deposit thickness contours instead of bNMR estimates because bNMR estimates were determined to overestimate hydraulic conductivity. Hydraulic conductivity values generally were greater in the southwestern part of study area than the northeastern part.

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Conceptual and numerical groundwater flow model of the Cedar River alluvial aquifer system with simulation of drought stress on groundwater availability near Cedar Rapids, Iowa, for 2011 through 2013

Haj¹,

Ha²,

Gruhn³

et al. 2021

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Lithostratigraphic, geophysical, and hydrogeologic observations from a boring drilled to bedrock in glacial sediments near Nantucket Sound in East Falmouth, Massachusetts

Cited by 3 publications

References 16 publications

Evaluation of Models for Estimating Hydraulic Conductivity in Glacial Aquifers with NMR Logging

Evaluation of Models for Estimating Hydraulic Conductivity in Glacial Aquifers with NMR Logging

Maps of elevation of top of Pierre Shale and surficial deposit thickness with hydraulic properties from borehole geophysics and aquifers tests within and near Ellsworth Air Force Base, South Dakota, 2020–21

Conceptual and numerical groundwater flow model of the Cedar River alluvial aquifer system with simulation of drought stress on groundwater availability near Cedar Rapids, Iowa, for 2011 through 2013

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