Print Email Facebook Twitter Internal multiple elimination Title Internal multiple elimination: Can we trust an acoustic approximation? Author Reinicke Urruticoechea, C. (TU Delft Applied Geophysics and Petrophysics; Aramco Overseas Company B.V.) Dukalski, Marcin (Aramco Overseas Company B.V.) Wapenaar, C.P.A. (TU Delft ImPhys/Medical Imaging; TU Delft Applied Geophysics and Petrophysics) Date 2021 Abstract Correct handling of strong elastic, internal, multiples remains a challenge for seismic imaging. Methods aimed at eliminating them are currently limited by monotonicity violations, a lack of a-priori knowledge about mode conversions, or unavailability of multi-component sources and receivers for not only particle velocities but also the traction vector. Most of these challenges vanish in acoustic media such that Marchenko-equation-based methods are able in theory to remove multiples exactly (within a certain wavenumber-frequency band). In practice, however, when applied to (elastic) field data, mode conversions are unaccounted for. Aiming to support a recently published marine field data study, we build a representative synthetic model. For this setting, we demonstrate that mode conversions can have a substantial impact on the recovered multiple-free reflection response. Nevertheless, the images are significantly improved by acoustic multiple elimination. Moreover, after migration the imprint of elastic effects is considerably weaker and unlikely to alter the seismic interpretation. Subject elasticinternal multiplesshallowMiddle East To reference this document use: http://resolver.tudelft.nl/uuid:b248a597-14e0-4531-953a-5b048c21e28b DOI https://doi.org/10.1190/geo2020-0850.1 ISSN 0016-8033 Source Geophysics, 86 (5), WC41–WC54 Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type journal article Rights © 2021 C. Reinicke Urruticoechea, Marcin Dukalski, C.P.A. Wapenaar Files PDF Reinicke_etal.pdf 11.86 MB Close viewer /islandora/object/uuid:b248a597-14e0-4531-953a-5b048c21e28b/datastream/OBJ/view