Using electrical resistivity logs and short duration pumping tests to estimate hydraulic conductivity profiles

Kaleris, Vassilios; Ziogas, Alexandros I.

doi:10.1016/j.jhydrol.2020.125277

Cited by 11 publications

(16 citation statements)

References 38 publications

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“…The groundwater hydrology model MODFLOW has been used for the simulation of groundwater flow and the estimation of the water balance of the Almyros aquifer. MODFLOW has been successfully applied in aquifer systems in Greece such as in the Lake Karla aquifer [16,53,55], in Eidomeni-Evzones region in Axios basin [56], in Moudania aquifer [57], on Thira aquifer in Santorini island [58,59], in Glafkos aquifer in Patras Gulf [60], in Cyclades [61], and in Messara aquifer system in Crete [62].…”

Section: Groundwater Flow Model Descriptionmentioning

confidence: 99%

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An Integrated Modeling System for the Evaluation of Water Resources in Coastal Agricultural Watersheds: Application in Almyros Basin, Thessaly, Greece

Lyra

Λουκάς

Sidiropoulos

et al. 2021

Water

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This study presents an integrated modeling system for the evaluation of the quantity and quality of water resources of coastal agricultural watersheds. The modeling system consists of coupled and interrelated models, including (i) a surface hydrology model (UTHBAL), (ii) a groundwater hydrology model (MODFLOW), (iii) a crop growth/nitrate leaching model (REPIC, an R-ArcGIS-based EPIC model), (iv) a groundwater contaminant transport model (MT3DMS), and (v) a groundwater seawater intrusion model (SEAWAT). The efficacy of the modeling system to simulate the quantity and quality of water resources has been applied to the Almyros basin in Thessaly, Greece. It is a coastal agricultural basin with irrigated and intensified agriculture facing serious groundwater problems, such as groundwater depletion, nitrate pollution, and seawater intrusion. Irrigation demands were estimated for the main crops cultivated in the area, based on precipitation and temperature from regional weather stations. The models have been calibrated and validated against time-series of observed crop yields, groundwater table observations, and observed concentrations of nitrates and chlorides. The results indicate that the modeling system simulates the water resources quantity and quality with increased accuracy. The proposed modeling system could be used as a tool for the simulation of water resources management and climate change scenarios.

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Section: Groundwater Flow Model Descriptionmentioning

confidence: 99%

“…SEAWAT has been successfully applied in coastal aquifer systems in Greece such as in Santorini island in Thira aquifer [58,59], in Cyclades [61], in Nea Moudania [57,77], in Glafkos aquifer in Gulf of Patras [60].…”

Section: Chloride Solute Transport and Dispersion Model Descriptionmentioning

confidence: 99%

An Integrated Modeling System for the Evaluation of Water Resources in Coastal Agricultural Watersheds: Application in Almyros Basin, Thessaly, Greece

Lyra

Λουκάς

Sidiropoulos

et al. 2021

Water

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“…Hydraulic conductivity plays an essential role in controlling the distribution, flow path, and storage of groundwater in the formation, especially in complex geological environments where this parameter is highly heterogeneous and, as generally recognized, may vary with spatial locations [1][2][3][4]. Therefore, if detailed and continuous hydraulic conductivity along boreholes (hydraulic conductivity profiles) can be obtained during the site investigation [5], it will be constructive to clarify the hydrogeological complexity of rock formations [6]. However, such detailed information is not easily obtained due to the limitations of budget, labor, and exploration methods.…”

Section: Introductionmentioning

confidence: 99%

“…Although this method can provide detailed information concerning hydraulic conductivity with accurate results, the method is labor-intensive, time-consuming, and costly, as mentioned above. To improve the limitation, down-hole logging tools, such as flowmeter [9][10][11], electrical well logging [5,12,13], the liner profiling method [14], or NMR (nuclear magnetic resonance) logging [15], have been studied to explore profiles of the hydraulic properties of formations surrounding boreholes. Although these down-hole logging tools can provide higher resolutions, not all tools have the advantage of low cost while estimating hydraulic conductivity.…”

Section: Introductionmentioning

confidence: 99%

“…Although these down-hole logging tools can provide higher resolutions, not all tools have the advantage of low cost while estimating hydraulic conductivity. Additionally, geophysical data measured from these tools still need to combine transform functions to obtain hydraulic conductivity, and these studies have not yet been fully developed [5,10,12,14,15].…”

Section: Introductionmentioning

confidence: 99%

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Investigating Formation Factor–Hydraulic Conductivity Relations in Complex Geologic Environments: A Case Study in Taiwan

Hsu,

Liu,

Dong

et al. 2023

Water

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The development of cost-effective methods for estimating hydraulic conductivity profiles has been an ongoing effort in the field of engineering practice, which can be used to increase availability to clarify the hydrogeological complexity of fractured rock aquifers for the aid of solving groundwater-related problems. A new methodology is presented, which combines electrical well logs, fluid conductivity logs, double-packer hydraulic tests, Archie’s law, and the Kozeny–Carman-Bear equation to investigate relations between formation factor (F) and hydraulic conductivity (K). Available geophysical and hydraulic test data measured from 88 boreholes in fractured rock formations in Taiwan were collected to perform the correlation studies. The correlation investigation outcomes indicate that the established F-K relations have the potential to serve as the transformation function for estimating hydraulic conductivity through the geological directly. To improve F-K relations in response to the effect of clay mineralogy, two proposed clustering techniques (the natural gamma ray threshold method and the modified Archie’s law method) successfully play an important role in filtering clayed data. The prevalence of clay content in most of Taiwan’s fractured rock formations has been found, which implies that careful consideration of clay-related issues in complex geologic formations is essential while applying Archie’s law theory. Finally, the predictive models for estimating hydraulic conductivity have been developed for three types of lithology (sandstone, schist, and slate).

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Estimating Hydraulic Conductivity from Reservoir Resistivity Logs, Northern Western Desert, Egypt

Khalil

Temraz²,

Joeckel³

et al. 2022

Pure Appl. Geophys.

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Using electrical resistivity logs and short duration pumping tests to estimate hydraulic conductivity profiles

Cited by 11 publications

References 38 publications

An Integrated Modeling System for the Evaluation of Water Resources in Coastal Agricultural Watersheds: Application in Almyros Basin, Thessaly, Greece

An Integrated Modeling System for the Evaluation of Water Resources in Coastal Agricultural Watersheds: Application in Almyros Basin, Thessaly, Greece

Investigating Formation Factor–Hydraulic Conductivity Relations in Complex Geologic Environments: A Case Study in Taiwan

Estimating Hydraulic Conductivity from Reservoir Resistivity Logs, Northern Western Desert, Egypt

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