1. Geology 5660/6660 Applied Geophysics 24 Feb 2014 © A.R. Lowry 2014 For 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!!!!

2. Haakon Fossen 2010

4. Production Injection

5. Haakon Fossen 2010 Salt structures

6. Haakon Fossen 2010 Salt structures

7. Haakon Fossen 2010

9. Kombineres med seismiske data Electromagnetic imaging also growing in use…

10. Haakon Fossen 2010 … Here combined with seismic data