Predicting controlled-source electromagnetic responses from seismic velocities

Dieter Werthmüller, Antoni Ziolkowski, David Wright

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

We created a workflow to predict controlled-source electromagnetic (CSEM) responses from seismic velocities and compared the predicted responses with CSEM data. The first step was to calculate a resistivity model from seismic velocities in a Bayesian framework to account for the uncertainties. The second step was to estimate the electric anisotropy and improve the resistivity model for the depths at which there was no well control. The last step was to use this updated resistivity model to forward-model CSEM responses and compare the result with CSEM data. The comparison with real data revealed that the measured CSEM responses were generally within plus and minus one standard deviation of the predicted responses. This workflow was able to predict CSEM responses, which can prove very useful for feasibility studies before acquisition and interpretation after acquisition of CSEM data.
Original languageEnglish
Pages (from-to)SH115-SH131
JournalInterpretation
Volume2
Issue number3
Early online date31 Jul 2014
DOIs
Publication statusPublished - 1 Aug 2014

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