Permeability Estimation Directly From Logging-While-Drilling Induced Polarization Data

G. Fiandaca*, P.K. Maurya, Nicola Balbarini, A. Hördt, A.V. Christiansen, N. Foged, Poul Løgstrup Bjerg, E. Auken

*Corresponding author for this work

    Research output: Contribution to journalJournal articleResearchpeer-review

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    In this study we present the prediction of permeability from time‐domain spectral induced polarization (IP) data, measured in boreholes on undisturbed formations using the El‐log logging‐while‐drilling technique. We collected El‐log data and hydraulic properties on unconsolidated Quaternary and Miocene deposits in boreholes at three locations at a field site in Denmark, characterized by different electrical water conductivity and chemistry. The high vertical resolution of the El‐log technique matches the lithological variability at the site, minimizing ambiguity in the interpretation originating from resolution issues. The permeability values were computed from IP data using a laboratory‐derived empirical relationship presented in a recent study for saturated unconsolidated sediments, without any further calibration. A very good correlation, within one order of magnitude, was found between the IP‐derived permeability estimates and those derived using grain size analyses and slug‐tests, with similar depth‐trends and permeability contrasts. Furthermore, the effect of water conductivity on the IP‐derived permeability estimations was found negligible in comparison to the permeability uncertainties estimated from the inversion and the laboratory‐derived empirical relationship.
    Original languageEnglish
    JournalWater Resources Research
    Issue number4
    Pages (from-to)2851-2870
    Publication statusPublished - 2018


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