Depth conversion of seismic data using velocity analyses

Abstract

Velocity analyses are now routinely produced in the processing of seismic data. These are used for a number of purposes in processing and for interpretation. Although the display format varies for different velocity analyses they all are similar in that, when interpreted, they give a curve of moveout velocity against time at a specific location on a line. From this moveout velocity it is possible to calculate the average velocity to any reflection, subject to a number of assumptions.