Full Waveform Inversion (FWI)
High frequency FWI utilises the entire seismic wavefield to generate refined, high-resolution velocity models for imaging and characterisation.
FWI inverts for a high-resolution earth model using the entire seismic wavefield. It is an integral part of our depth model building strategies. At a high level, what FWI tries to do is actually quite simple. It iteratively updates an initial model by forward modelling synthetics and comparing them to field data. Our FWI implementation can be used in 2D or 3D and can handle isotropy, VTI or TTI.
At high frequency the benefits of FWI extend beyond imaging towards interpretation and characterisation. As can be seen in the figures detailed structural and stratigraphic details are resolved in the FWI model.