Paper Summary
We apply a multiparameter elastic FWI to estimate P-wave velocity and reflectivity in an elastic media. The algorithm used in this work comprises the scale separation of the sensitivity kernels and the elastodynamic wave-equation parameterized in terms of velocity and reflectivity. The aim is to mitigate the crosstalk between velocity and density in the computation of the P-wave velocity and reflectivity. Additionally, this provides an estimate of the relative density. Using a narrow azimuth streamer and a OBN data acquired in deep-water scenarios in offshore Brazil, we
demonstrate that to the multiparameter EFWI can simultaneously improve the accuracy of the velocity model and the resolution of the reflectivity from with minimal data pre-processing. We discuss the benefits of inverting both parameters while mitigating the crosstalk between them,
enabling the computation of additional attributes that can assist in quantitative interpretation.