On the Use of Seismic Velocities in Model Building for Depth Conversion

IV-1 ON THE USE OF SEISMIC VELOCITIES IN MODEL BUILDING FOR DEPTH CONVERSION Introduction 1 The most common depth conversion method over the last few decades has been to use functions derived from well data. Stacking velocities have traditionally been regarded as less precise and have only been preferred in those cases where lateral velocity variations were dominating. In recent years this has changed. Modern stacking velocity data and methods are of better quality due to improvements in seismic processing and numerical modelling techniques. Today stacking velocity depth conversion is the preferred method in many areas around the world especially