Structural FWI jointly inverted with gravity and electromagnetics

This work focuses on structural Full Waveform Inversion jointly inverted with gravity and electromagnetic data to reduce ambiguities and degrees of freedom in geologic model inversion processes through several innovative approaches: A geometrical parameterization of the structural model, an intelligent and flexible coupling of model parameters for the multi-physics inversion, the use of localized and wavelength-based controls to reduce the number of geometry parameters, and a staged inversion strategy that incorporates multi-frequency and -offset bands as well as combining different inversion methods at different inversion stages. A realistic “sandbox” synthetic example is developed to serve as a proof-of-concept and a testing ground for these methods. First results show that multi-parameter inversion can help to overcome the challenges of data related ambiguities, namely in salt delineation and cycle skipping. Looking forward, the work aims to incorporate structural information from seismic reflectors directly into the inversion process and extend the application of these methods to field data for broader impact and validation.