TY - JOUR
T1 - Data-driven retrieval of primary plane-wave responses
AU - Meles, Giovanni Angelo
AU - Zhang, Lele
AU - Thorbecke, Jan
AU - Wapenaar, Kees
AU - Slob, Evert
PY - 2020
Y1 - 2020
N2 - Seismic images provided by reverse time migration can be contaminated by artefacts associated with the migration of multiples. Multiples can corrupt seismic images, producing both false positives, that is by focusing energy at unphysical interfaces, and false negatives, that is by destructively interfering with primaries. Multiple prediction/primary synthesis methods are usually designed to operate on point source gathers and can therefore be computationally demanding when large problems are considered. A computationally attractive scheme that operates on plane-wave datasets is derived by adapting a data-driven point source gathers method, based on convolutions and cross-correlations of the reflection response with itself, to include plane-wave concepts. As a result, the presented algorithm allows fully data-driven synthesis of primary reflections associated with plane-wave source responses. Once primary plane-wave responses are estimated, they are used for multiple-free imaging via plane-wave reverse time migration. Numerical tests of increasing complexity demonstrate the potential of the proposed algorithm to produce multiple-free images from only a small number of plane-wave datasets.
AB - Seismic images provided by reverse time migration can be contaminated by artefacts associated with the migration of multiples. Multiples can corrupt seismic images, producing both false positives, that is by focusing energy at unphysical interfaces, and false negatives, that is by destructively interfering with primaries. Multiple prediction/primary synthesis methods are usually designed to operate on point source gathers and can therefore be computationally demanding when large problems are considered. A computationally attractive scheme that operates on plane-wave datasets is derived by adapting a data-driven point source gathers method, based on convolutions and cross-correlations of the reflection response with itself, to include plane-wave concepts. As a result, the presented algorithm allows fully data-driven synthesis of primary reflections associated with plane-wave source responses. Once primary plane-wave responses are estimated, they are used for multiple-free imaging via plane-wave reverse time migration. Numerical tests of increasing complexity demonstrate the potential of the proposed algorithm to produce multiple-free images from only a small number of plane-wave datasets.
KW - Multiple attenuation
KW - Reverse-time migration
KW - Seismic imaging
UR - http://www.scopus.com/inward/record.url?scp=85085595947&partnerID=8YFLogxK
U2 - 10.1111/1365-2478.12960
DO - 10.1111/1365-2478.12960
M3 - Article
AN - SCOPUS:85085595947
SN - 0016-8025
VL - 68
SP - 1834
EP - 1846
JO - Geophysical Prospecting
JF - Geophysical Prospecting
IS - 6
ER -