1887

Abstract

Summary

Between the years 2008 and 2013, approximately 67 kilotons of CO2 have been injected at the Ketzin site, Germany. As part of the geophysical monitoring programme, time-lapse electrical resistivity tomography (ERT) has been applied using crosshole and surface-downhole ERT measurements. The ERT data collection is partly based on electrodes that are permanently installed in three wells at the site (one injection well and two observation wells). Both types of ERT measurements consistently show the buildup of a CO2-related resistivity signature near the injection point. On the basis of the imaged resistivity changes and a petrophysical model, CO2 saturation levels are estimated. These CO2 saturations are interpreted in conjunction with CO2 saturations inferred from neutron-gamma loggings. Apart from the CO2-brine substitution response in the observed resistivity changes, significant imprints from the dynamic behaviour of the CO2 in the reservoir are observed.

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/content/papers/10.3997/2214-4609.201601496
2016-05-31
2020-05-30
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References

  1. Baumann, G., Henninges, J. and Lucia, M.D.
    [2014] Monitoring of saturation changes and salt precipitation during CO2 injection using pulsed neutron-gamma logging at the Ketzin pilot site. International Journal of Greenhouse Gas Control28, 134–146.
    [Google Scholar]
  2. Bergmann, P., Schmidt-Hattenberger, C., Kiessling, D., Rücker, C., Labitzke, T., Henninges, J., Baumann, G. and Schütt, H.
    [2012] Surface-downhole electrical resistivity tomography applied to monitoring of CO2 storage at Ketzin, Germany. Geophysics77, B253–400 B267.
    [Google Scholar]
  3. Kummerow, J. and Spangenberg, E.
    [2011] Experimental evaluation of the impact of the interactions of CO2-SO2, brine, and reservoir rock on petrophysical properties: A case study from the Ketzin test site, Germany. Geochemistry Geophysics Geosystems12(5), Q05010.
    [Google Scholar]
  4. Schmidt-Hattenberger, C., Bergmann, P., Kießling, D., Krüger, K., Rücker, C., Schütt, H., et al.
    [2011] Application of a Vertical Electrical Resistivity Array (VERA) for monitoring CO2 migration at the Ketzin site: First performance evaluation. Energy Procedia4, 3363–3370.
    [Google Scholar]
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