Tomography in the post-migrated domain is quickly becoming the standard approach for obtaining velocities in complex areas. The standard flow to update the velocity through tomography in the post-migrated domain begins by migrating the data using some initial velocity model. This migration method can be Kirchhoff (Etgen, 1990), downward continuation methods (Clapp, 2001b; Mosher et al., 2001), ...

\Velocity Picking" is the problem of picking velocity-time pairs based on a coherence metric between multiple seismic signals. Coherence as a function of velocity and time can be expressed as a 2-D color image representing the \Semblance Velocity." Currently, humans pick velocities by looking at the Semblance Velocity image; picking velocities for a seismic survey can take days or even weeks. A...

3D-seismic data have increasingly shifted seismic interpretation work from a horizons-based to volume-based focus over the past decade. The size of identification and mapping has therefore become difficult requires faster better tools. Faults, for instance, are one most significant features subsurface geology interpreted data. Detailed fault is very important in reservoir characterization model...

A Nonlinear Differential Semblance Algorithm for Waveform Inversion