3D elastic-orthorhombic anisotropic full-waveform inversion: Application to field OBC data
KAUST DepartmentPhysical Sciences and Engineering (PSE) Division
Earth Science and Engineering Program
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AbstractFor the purpose of extracting higher resolution information from a 3D field data set, we apply a 3D elastic orthorhombic (ORT) anisotropic full waveform inversion (FWI) to hopefully better represent the physics of the Earth. We utilize what we consider as the optimal parameterization for surface acquired seismic data over a potentially orthorhombic media. This parameterization admits the possibility of incorporating a hierarchical implementation moving from higher anisotropy symmetry to lower ones. From the analysis of the radiation pattern of this new parameterization, we focus the inversion of the 3D data on the parameters that may have imprint on the data with minimal tradeoff, and as a result we invert for the horizontal P-wave velocity model, an ε1 model, its orthorhombic deviation, and the shear wave velocity. The inverted higher resolution models provide reasonable insights of the medium.
CitationOh J-W, Alkhalifah T (2016) 3D elastic-orthorhombic anisotropic full-waveform inversion: Application to field OBC data. SEG Technical Program Expanded Abstracts 2016. Available: http://dx.doi.org/10.1190/segam2016-13862511.1.
SponsorsThe authors would like to thank Statoil ASA and the Volve license partners ExxonMobil E&P Norway and Bayerngas Norge AS, for the release of the Volve data. The authors would like to thank Marianne Houbiers from Statoil for providing some helpful suggestions and corrections. We also thank the Shaheen II administrator team at KAUST for the computational support. We also thank the members of SWAG in KAUST, particularly Nabil Masmoudi and Ramzi Djebbi, for helpful discussions.
PublisherSociety of Exploration Geophysicists