CPC G01V 1/282 (2013.01) [G01V 1/301 (2013.01); G01V 1/305 (2013.01); G01V 1/307 (2013.01); G01V 1/345 (2013.01)] | 20 Claims |
1. A seismic exploration method comprising:
obtaining seismic data acquired in an area over a subsurface formation;
migrating the seismic data based on a model of the subsurface formation and using a wave-equation Kirchhoff, WEK, technique, for pre-defined surface locations, the WEK technique including:
forward-propagating a low-frequency wavefield from a shot location among the pre-defined locations,
deriving an arrival traveltime of a maximum amplitude of the low-frequency wavefield, and
applying Kirchhoff migration using the arrival traveltime and the maximum amplitude; and
outputting an image of the subsurface formation based on the migrated seismic data.
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