Data acquisition and prestack migration based on seismic visibility analysis

摘要: Seismic visibility analysis of selected subsurface structures is employed to determine surface locations offering high target events. These can then be used as a basis for acquiring additional seismic survey data and/or selecting existing traces re-migration with more sophisticated migration methods. With either usage, the newly migrated expected offer enhanced images event. In some embodiments, determination includes using wave equation based propagator find, each multiple simulated shots, reflection wavefield from event in model; and calculate, receiver positions, contribution signal wavefield. The further converting into source-receiver value. Because acquisition limited region, imaging effort significantly reduced.