KAUST DepartmentKing Abdullah University of Science and Technology, , Saudi Arabia
Permanent link to this recordhttp://hdl.handle.net/10754/625272
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AbstractFull-waveform inversion in anisotropic media using reflected waves suffers from the strong non-linearity of the objective function and trade-offs between model parameters. Estimating long-wavelength model components by fixing parameter perturbations, referred to as reflection-waveform inversion (RWI), can mitigate nonlinearity-related inversion issues. Here, we extend RWI to acoustic VTI (transversely isotropic with a vertical symmetry axis) media. To minimize trade-offs between the model parameters, we employ a new hierarchical two-stage approach that operates with the P-wave normal-moveout velocity and anisotropy coefficents ζ and η. First, is estimated using a fixed perturbation in ζ, and then we invert for η by fixing the updated perturbation in . The proposed 2D algorithm is tested on a horizontally layered VTI model.
CitationPattnaik S, Tsvankin I, Wang H, Alkhalifah T (2016) Full-waveform inversion with reflected waves for 2D VTI media. SEG Technical Program Expanded Abstracts 2016. Available: http://dx.doi.org/10.1190/segam2016-13967833.1.
SponsorsThis work was supported by the Consortium Project on Seismic Inverse Methods for Complex Structures at CWP. Tariq Alkhalifah thanks KAUST for its support.
PublisherSociety of Exploration Geophysicists
Conference/Event nameSEG International Exposition and 86th Annual Meeting, SEG 2016