Deconvolution and correlation-based interferometric redatuming by wavefield inversion

Diego Barrera Pacheco, J. Schleicher, Joost van der Neut, Kees Wapenaar

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Seismic interferometry is a method to retrieve Green’s functions for sources (or receivers) where there are only receivers (or sources, respectively). This can be done by correlationor deconvolution-based methods. In this work we present a
new approach to reposition the seismic array from the earth’s surface to an arbitrary datum at depth using the one-way reciprocity theorems of convolution and correlation type. The redatuming process is done in three steps: (a) retrieving the downward Green’s function for sources at the earth’s surface
and receivers at the datum, (b) retrieving the corresponding upward Green’s function, and (c) retrieving the reflected upward wavefield for sources and receivers at the datum. Input for steps (a) and (b) are the surface data and wavefields simulated in a velocity model of the datum overburden. Step (c)
uses the responses of steps (a) and (b) as input data in the convolution-based interferometric equation. The method accounts for inhomogeneities in the overburden medium, thus reducing anticausal events and artefacts as compared to a purely correlation-based procedure.
Original languageEnglish
Title of host publicationProceedings of the 87th SEG annual meeting, expanded abstracts
EditorsA. Mihai Popovici, S. Fomel
Publication statusPublished - 2017
Event87th SEG annual meeting - Houston, United States
Duration: 24 Sep 201729 Sep 2017
Conference number: 87

Publication series

NameSEG Technical Program Expanded Abstracts 2017
ISSN (Electronic)1949-4645


Conference87th SEG annual meeting
Country/TerritoryUnited States
Internet address


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