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Interbed Removal: New Approaches for Modeling and Data Processing
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 80th EAGE Conference and Exhibition 2018, Jun 2018, Volume 2018, p.1 - 5
Abstract
We introduce two methods for removing the scattering related to a single sub-horizontal reflector or a stack of layers. The first method combines full-waveform finite-difference (FD) solvers above and below the interface(s) of interest with one-way wavefield extrapolation across the interface(s). This removes the scattering associated with the interface(s), while preserving all other events with correct kinematics and dynamics. Furthermore, we show how scattering due to a single interface can be removed from surface reflection data using Marchenko redatuming. Reflection responses related to different depth intervals of the subsurface are isolated and combined such that scattering due to a certain depth interval is removed from the surface data. Both methods require the one-way transmission responses across the interface(s) of interest and we assume that we can intersect the medium above and below the reflector of interest. Potential applications include removing interbed multiples from surface data as well as the generation of FD reference data without interbed multiples.