Prestack depth migration of primary and surface-related multiple reflections

Détails

ID Serval
serval:BIB_F53B37F4D7C3
Type
Actes de conférence (partie): contribution originale à la littérature scientifique, publiée à l'occasion de conférences scientifiques, dans un ouvrage de compte-rendu (proceedings), ou dans l'édition spéciale d'un journal reconnu (conference proceedings).
Collection
Publications
Titre
Prestack depth migration of primary and surface-related multiple reflections
Titre de la conférence
74th Ann. Meet. Soc. Expl. Geophys., Houston, Texas
Auteur(s)
Muijs R., Robertsson J.O.A., Holliger K.
ISSN-L
1052-3812
Statut éditorial
Publié
Date de publication
2005
Pages
2107-2111
Langue
anglais
Résumé
Surface-related multiples may severely contaminate multicomponent
seabed seismic recordings. Because conventional imaging techniques
require input data that consist of primary reflections only, significant
processing effort is commonly dedicated to attenuating multiples
prior to migration. On the other hand, surface-related multiples
provide additional illuminations of the subsurface. We present a
prestack depth-migration method that allows primary and multiple
reflections to be imaged simultaneously. Depth imaging with primary
and multiple reflections (DIPMR) involves decomposing the data into
up- and downgoing wave constituents, followed by downward extrapolation.
Artifacts generated by interference of up- and downgoing events not
associated with the same subsurface reflection points (cross-talk)
are attenuated using a 2D deconvolution imaging condition. In contrast
to existing methods, DIPMR does not require a priori information
about the source signature or directivity, because the illuminating
source wave field is extracted directly from the data themselves
via the up/down separation. Moreover, there is no need for elimination
or identification of multiples prior to migration. By including surface-related
multiples in the imaging procedure, the effective source wavefield
is stronger and the spatial aperture wider.
Création de la notice
25/11/2013 19:28
Dernière modification de la notice
20/08/2019 17:21
Données d'usage