VECTOR MIGRATION OF 1ST ORDER FREE-SURFACE RELATED DOWNGOING MULTIPLES FROM VSP DATA

摘要

1st order free-surface multiples recorded in VSP data or reverse VSP data are processed using a 3 -C 3-D vector migration method to produce an image of the subsurface. This image produces a larger coverage than that obtained in 3 -C 3-D processing of reflection data acquired in the VSP.