Geological (in)significance of seismic velocity for time migration
Channel: Rob Vestrum
Date: 14/04/2020

Seismic velocity for PSTM is a processing parameter that may or may not make sense geologically. Here is why.

One of the significant implications the averaging in RMS velocities used to optimize PSTM imaging is that the presence of complex structure violates the assumptions inherent to the calculation of interval velocities.

0:00 Intro
0:58 Simple structure: lateral changes
2:28 Simple structure: vertical changes
4:31 Seismic data example: TTI anisotropy
7:05 Summary