Patent ID: 11940579
Assignee: CGG SERVICES SAS
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 15:
16. A non-transitory computer readable recording medium storing executable codes that, when executed by a computer, make the computer perform a seismic exploration method comprising:
obtaining seismic data acquired 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 source locations, the WEK technique including:
forward-propagating a low-frequency wavefield from a shot location among the pre-defined source 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.