SEG 2008

Just returned from the 2008 SEG meeting in Las Vegas. I gave two talks. In the regular sessions on Tuesday afternoon it was "The Wolf ramp: Early work on reflectivity dispersion." The session was poorly attended, maybe 25 total. On Thursday afternoon in the Best of the Development and Production (D&P) Forum, my talk was "The physical basis of reflectivity dispersion" and it was much better attendance, perhaps 60 people in the room.

The basic idea of both is careful analysis of the seismic reflection process and what can lead to frequency dependent reflectivity. My list of candidates, in likely order of importance, is:

1. Interference effects due to closely spaced reflection coefficients
   
2. Processing errors (residual normal moveout, etc.)
   
3. Geological or pore fluid transition zone (Wolf ramp)
   
4. Rough surface scattering
   
5. Porous-Porous reflection physics (Biot contact)