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10 papers · 1 filter
Does 3D frequency-domain FWI of full-azimuth/long-offset OBN data feasible? The Gorgon case study
S. Operto, P. Amestoy, H. S. Aghamiry +13
Frequency-domain Full Waveform Inversion (FWI) is potentially amenable to efficient processing of full-azimuth long-offset stationary-recording seabed acquisition carried out with…
ADMM-based full-waveform inversion for microseismic imaging
Hossein S. Aghamiry, Ali Gholami, Stéphane Operto +1
Full waveform inversion (FWI) is beginning to be used to characterize weak seismic events at different scales, an example of which is microseismic event (MSE) characterization. How…
Efficient extended-search space full-waveform inversion with unknown source signatures
Hossein S. Aghamiry, Frichnel W. Mamfoumbi-Ozoumet, Ali Gholami +1
Full waveform inversion (FWI) requires an accurate estimation of source signatures. Due to the coupling between the source signatures and the subsurface model, small errors in the…
Full Waveform Inversion with Adaptive Regularization
Hossein S. Aghamiry, Ali Gholami, Stéphane Operto
Regularization is necessary for solving nonlinear ill-posed inverse problems arising in different fields of geosciences. The base of a suitable regularization is the prior expresse…
Attenuation imaging by wavefield reconstruction inversion with bound constraints and total variation regularization
Hossein S. Aghamiry, Ali Gholami, Stéphane Operto
Wavefield reconstruction inversion (WRI) extends the search space of Full Waveform Inversion (FWI) by allowing for wave equation errors during wavefield reconstruction to match the…
ADMM-based multi-parameter wavefield reconstruction inversion in VTI acoustic media with TV regularization
Hossein S. Aghamiry, Ali Gholami, Stéphane Operto
Full waveform inversion (FWI) is a nonlinear waveform matching procedure, which suffers from cycle skipping when the initial model is not kinematically-accurate enough. To mitigate…