The new deep directional resistivity tool developed by Schlumberger has a depth of investigation of factor 5-10 deeper than the standard type of directional bed-boundary mapping tools. The deep EM-measurement is clearly a very central puzzle piece in bridging the gap between standard LWD-measurements, reservoir scale geologic features and surface seismic. There will be a strong push from operators to use this new data not only for well placement challenges, but also for reservoir characterization (Constable et al. 2012). However, we must remember that deep EM-measurements are relatively new in the industry. Still, we already discuss how to push the envelope beyond the challenge of optimizing well placement. There is a high risk of over-interpretation when we start to push the envelope based on limited knowledge.


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