Interpreting seismic profiles is easier if they can be presented in depth rather than two-way time. The removal of velocity anomalies and the presentation of more or less true dips will help you a great deal if the section is structurally complex. And if the interpretation or the velocity data applied are significantly wrong, then the resulting depth model will look obviously wrong, too.
Depth conversion can therefore be a first-order validation method.
Add some simple balance-checking tools and you have a very powerful capability for evaluating seismic structure. The conversion process can be run in a few seconds once the data are set up, and then repeated with new velocities or polygon shapes until results match the available control. With DepthCon2000 you can tackle complex interpretation problems very quickly, resolving the geometry of multiple thrusting, salt problems, and across-fault correlation questions. This method allows for complex velocity variations and is a sophisticated capability. Gaps between the polygons in the colour fill are given the last-known velocity, and so the definition of polygons need not be done with high accuracy.