Decomposition of the Green's function using the Marchenko equation

Decomposition of the Green's function using the Marchenko equation

Brackenhoff, J.A. (TU Delft Applied Geophysics and Petrophysics)
van der Neut, J.R. (TU Delft ImPhys/Acoustical Wavefield Imaging; TU Delft Applied Geophysics and Petrophysics)
Wapenaar, C.P.A. (TU Delft ImPhys/Acoustical Wavefield Imaging; TU Delft Applied Geophysics and Petrophysics)

Mihai Popovici, A. (editor)
Fomel, S. (editor)

2017

The Marchenko equation can be used to retrieve the Green’s function at depth as a full function or decomposed into its upand downgoing parts. We show that the equation can be rewritten to create a decomposition scheme that can decompose a full wavefield, that was recorded at depth, into its up- and downgoing parts. We show that this can be done without a smooth velocity model that the Marchenko scheme requires and without any knowledge of the medium properties that traditional decomposition methods require. Instead we only need a the reflection response and a wavefield that has been recorded at the
surface due to a source at depth or (by using source-receiver reciprocity) that was measured down in a borehole due to a source at the surface. We also validate our results by comparing them to directly modeled up- and downgoing wavefields.

http://resolver.tudelft.nl/uuid:6990bd1b-f669-4dc0-ae21-5cf98c0261f4

https://doi.org/10.1190/segeab.36

SEG

Proceedings of the 87th SEG annual meeting, expanded abstracts

87th SEG annual meeting, 2017-09-24 → 2017-09-29, Houston, United States

SEG Technical Program Expanded Abstracts 2017, 1949-4645

Institutional Repository

conference paper

© 2017 J.A. Brackenhoff, J.R. van der Neut, C.P.A. Wapenaar