P-to-S converted seismic waves have aroused significant interest in the oil exploration industry in recent years. When used in addition to PP data, they have proved valuable in reservoir characterization (e.g., lithology discrimination, determination of the fracture orientation) and in reservoir imaging (e.g., in case of the presence of gas, shale/sand discontinuities, multiple reflections).

Combining this information for reservoir imaging requires PP and PS depth-migrated images that are correctly focused (i.e., resulting from the stack of common image point gathers characterized by flat seismic events) and consistent (i.e., PP and PS depth events end up at the same lateral and...

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