Print Email Facebook Twitter Interbed demultiple using Marchenko redatuming on 3D field data of the Santos basin Title Interbed demultiple using Marchenko redatuming on 3D field data of the Santos basin Author Staring, M. (TU Delft Applied Geophysics and Petrophysics) Wapenaar, C.P.A. (TU Delft ImPhys/Acoustical Wavefield Imaging; TU Delft Applied Geophysics and Petrophysics) Date 2019 Abstract We apply Marchenko redatuming using an adaptive double-focusing method to 3D field data of the Santos basin, Brazil. This method was already successfully applied to 2D field data and we now study the acquisition geometry and preprocessing requirements in 3D. We start from 3D synthetic data modeled on a dense grid of colocated sources and receivers and decimate down to a realistic NAZ streamer acquisition. The synthetic tests show that the sail line spacing and the missing outer cables are the acquisition parameters with the strongest effect on Marchenko redatuming. We can interpolate for the sail line spacing and the near offsets, but the missing outer cables are unfortunately a limitation of the acquisition. After applying the proposed interpolation to 3D field data, interbed multiples are successfully predicted and subtracted from the target area, resulting in a significant improvement in the geological interpretation. Naturally, the pre-processing requirements and challenges strongly depend on the acquisition geometry and the geology of the area under investigation (e.g. water depth, shape of the overburden, maximum dip). Hence, these tests only give a general idea about the limitations of 3D Marchenko redatuming To reference this document use: http://resolver.tudelft.nl/uuid:3219f49e-0bbe-48c6-9193-1495f6c95ed6 Publisher Sociedade Brazileira de Geofísica (SBGf) Source Sixteenth International Congress of the Brazilian Geophysical Society Bibliographical note Accepted author manuscript Part of collection Institutional Repository Document type conference paper Rights © 2019 M. Staring, C.P.A. Wapenaar Files PDF SBGF_2019_nologo.pdf 6.7 MB Close viewer /islandora/object/uuid:3219f49e-0bbe-48c6-9193-1495f6c95ed6/datastream/OBJ/view