ABSTRACT

We derive analytical formulas for the radiation patterns of single parameter perturbations in fluid-saturated porous media. These radiation patterns include two scattered waveforms, fast compressional and shear waves, caused by the perturbation of different model parameters as a function of the scattering and incident angles. The study of radiation patterns in poroelastic media allows us to explore the possibility of reconstructing crucial model properties describing sedimentary rocks, and to examine coupling effects between different parameters during full-waveform inversion (FWI). To verify these analytical expressions, we calculate the corresponding numerical wavefields scattered by perturbations in one parameter, keeping the other parameters fixed to their background values. The poroelastic radiation patterns presented herein provide some understanding of the parameter trade-offs encountered in FWI in porous media.

Presentation Date: Wednesday, October 17, 2018

Start Time: 9:20:00 AM

Location: Poster Station 7

Presentation Type: Poster

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