Geology 5660/6660 Applied Geophysics 24 Feb 2014 © A.R. Lowry 2014 or Wed 26 Feb: Burger 524-539 (§8.4) : Industry Seismic Interpretation s, where possible, are critical to both processing interpretation (uses sonic log, VSP) on attribute maps (dip, dip-azimuth, amplitude, ief, roughness etc) structure & sed features ence cubes bring out discontinuities (fault structu t can misinterpret coherent noise as continuous fea c inversion = using velocity information for physical perties, true depth, better resolution via depth mi sualization (“data caves”) an important part of pro ismic: Multiple 3D reflection images over time aid imization of reservoir production dge of geological processes key to rpretation!!!!
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Geology 5660/6660Applied Geophysics
24 Feb 2014
© A.R. Lowry 2014For Wed 26 Feb: Burger 524-539 (§8.4)
Last Time: Industry Seismic Interpretation• Well ties, where possible, are critical to both processing and interpretation (uses sonic log, VSP)• Horizon attribute maps (dip, dip-azimuth, amplitude, relief, roughness etc) structure & sed features• Coherence cubes bring out discontinuities (fault structures) (but can misinterpret coherent noise as continuous features)• Seismic inversion = using velocity information for physical properties, true depth, better resolution via depth migration• 3D visualization (“data caves”) an important part of process• 4D seismic: Multiple 3D reflection images over time aid in optimization of reservoir production• Knowledge of geological processes key to interpretation!!!!
Haakon Fossen 2010
Haakon Fossen 2010
Haakon Fossen 2010
Production
Injection
Haakon Fossen 2010
Salt structures
Haakon Fossen 2010
Salt structures
Haakon Fossen 2010
Haakon Fossen 2010
Haakon Fossen 2010
•Kombineres med seismiske data
Electromagnetic imaging also growing in use…
Haakon Fossen 2010
… Here combined with seismic data
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