2D/3D Kirchhoff-based wavefield continuation

Many important data processing techniques that are used in typical seismic processing workflows rely on one or both the of following assumptions: 1) that data are spatially located on a regular grid, and 2) that data are all located at the same elevation. Seismic surveys are often designed such that these assumptions are close to correct, but (in particular for land data) they are never exactly met. Kirchhoff-based Wavefield continuation offers an effective and efficient method for re-datuming seismic data to accurately account for the effects of topography. This method inherently produces an output that is regularly gridded at user-specified intervals, which both regularizes the spatial gridding of the data and “fills in” minor holes in the data coverage. Combined, these effects ensure the aforementioned data processing assumptions are met rather than just approximated, which in turn will improve the accuracy of all subsequent data processing steps in a given seismic processing workflow.