Article Dans Une Revue Comptes Rendus. Géoscience Année : 2009

CoFIS and TELog: New downhole tools for characterizing dispersion processes in aquifers by single-well injection-withdrawal tracer tests

Philippe Gouze
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Richard Leprovost
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Thierry Poidras
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Tanguy Le Borgne
Gerard Lods
Philippe Pezard

Résumé

Contaminant migration in aquifers is one of the most debated issues in hydrogeology, as most experimental results display large deviations from the standard (asymptotic) Fickian dispersion theories. Multi-scale investigation and high-resolution sensors are required to determine the origin of non-asymptotic dispersion and validate models. For this, a set of multi-scale Single-Well Injection-Withdrawal (SWIW) tracer tests using a new dual-packer probe CoFIS, including a high resolution optical sensor TELog, are presented. When compared to standard techniques such as salinity measurements, it is shown that high-resolution optical measurements allow an improved characterization of the long-lasting non-asymptotic dispersion mechanisms.

Dates et versions

hal-00445250 , version 1 (08-01-2010)

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Philippe Gouze, Richard Leprovost, Thierry Poidras, Tanguy Le Borgne, Gerard Lods, et al.. CoFIS and TELog: New downhole tools for characterizing dispersion processes in aquifers by single-well injection-withdrawal tracer tests. Comptes Rendus. Géoscience, 2009, 341 (10-11), pp.965-975. ⟨10.1016/j.crte.2009.07.012⟩. ⟨hal-00445250⟩
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