geology 5660/6660 applied geophysics 24 feb 2014 © a.r. lowry 2014 for wed 26 feb: burger 524-539...
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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!!!!