Conventional time processing (imaging) often fails in areas with complex geology such as fold and thrust belts. These seismic data are usually of fair to poor quality, and false structures and mispositioned reflections are very common. The problem is of particular concern in the subthrust position where distortion from overriding high-velocity beds greatly distorts the time image. Time processing does not consider the velocity variation in the dipping overburden. On the other hand, depth imaging does not rely on a hyperbolic approach and other shortcuts associated with time processing. As a result, the final depth-processed image has better lateral and...

You do not currently have access to this article.