2.5-D true-amplitude offset continuation

Configuration transform operations such as offset continuation have a variety of uses in seismic processing. Offset continuation, i.e., the transformation of one common-offset section into another can be realized as a Kirchhoff-type stacking operation for 3-D wave propagation in a 2-D laterally inhomogeneous medium. By application of a suitable weight function, amplitudes of the data are transformed by replacing the geometrical-spreading factor of the input reflections by the correct one of the output reflections. The necessary weight function can be computed via 2-D dynamic ray tracing in a given macro-velocity model without any knowledge about a possible reflector. Numerical examples show that such a transformation can be realized with high accuracy.