N. Foged

Hydraulic permeability prediction from induced polarization data at field scale

Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  • G. Fiandaca
  • ,
  • P. K. Maurya
  • N. Balbarini, Technical University of Denmark
  • ,
  • A. Hördt, TU Braunschweig
  • ,
  • I. Møller, Geological Survey of Denmark and Greenland
  • ,
  • V. Rønde, Technical University of Denmark
  • ,
  • N. Foged
  • P. L. Bjerg, Technical University of Denmark
  • ,
  • A. V. Christiansen
  • E. Auken

In this study we present the prediction of hydraulic permeability (k) from time-domain spectral induced polarization (IP) data, measured in boreholes and along 2D surface profiles. The borehole data were collected with the El-log technique, which provides undisturbed “while drilling” measurements of the direct current (DC) resistivity, time-domain IP data and gamma radiation. Data were measured on unconsolidated formations at a landfill site in South Denmark, in three boreholes and along 16 2D profiles. DC and full-decay IP data were inverted in terms of the BIC re-parameterization of the Cole-Cole model, which present smaller parameter correlations and disentangles bulk and surface conduction. Permeability values were computed from bulk conductivity and the maximum imaginary conductivity, using the empirically-derived formulae presented in a recent study without any calibration. The IP-derived k estimates were compared to those estimated using grain size analysis and slug tests, for a total of 157 comparisons. A good correlation, on average within one decade, was found between the k estimates over four orders of magnitude, with similar depth-trends. In conclusion, IP can be reliably used for estimating hydraulic permeability on unconsolidated formations at the field scale, using the relations found in the laboratory without any further calibration.

Original languageEnglish
Title of host publication24th European Meeting of Environmental and Engineering Geophysics
Number of pages5
Place of publicationHouten, The Netherlands
PublisherEuropean Association of Geoscientists and Engineers
Publication year2019
Pages471-475
ISBN (Electronic)9789462822634
DOIs
Publication statusPublished - 2019
Event24th European Meeting of Environmental and Engineering Geophysics - Porto, Portugal
Duration: 9 Sep 201813 Sep 2018

Conference

Conference24th European Meeting of Environmental and Engineering Geophysics
LandPortugal
ByPorto
Periode09/09/201813/09/2018

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