E
Esteban Díaz
Researcher at Colorado School of Mines
Publications - 29
Citations - 360
Esteban Díaz is an academic researcher from Colorado School of Mines. The author has contributed to research in topics: Seismic migration & Geology. The author has an hindex of 9, co-authored 26 publications receiving 312 citations. Previous affiliations of Esteban Díaz include University of Alicante & BP.
Papers
More filters
Journal ArticleDOI
Constrained full-waveform inversion by model reparameterization
TL;DR: In this article, a model-space preconditioning technique based on directional Laplacian filters is proposed to preserve most of the details of the velocity model while smoothing the solution along known geological dips.
Journal ArticleDOI
Attenuating crosstalk noise with simultaneous source full waveform inversion
Antoine Guitton,Esteban Díaz +1 more
TL;DR: In this article, the authors propose to use preconditioning, whereby the gradient is smoothed at every iteration along predefined directions to attenuate crosstalk artefacts.
Proceedings ArticleDOI
Fast Full Waveform Inversion With Random Shot Decimation
Esteban Díaz,Antoine Guitton +1 more
TL;DR: This random decimation method helps decreasing the memory footprint of FWI because much fewer shots are needed at any time during the inversion, and FWI can be sped-up effectively while preserving the ability to recover the model.
Journal ArticleDOI
Elastic full-waveform inversion for VTI media: A synthetic parameterization study
TL;DR: In this paper, the authors applied elastic full waveform inversion (FWI) for a synthetic 2D VTI (transversely isotropic with a vertical symmetry axis) model based on the geologic section at Valhall field in the North Sea.
Journal ArticleDOI
Understanding the reverse time migration backscattering: noise or signal?
Esteban Díaz,Paul Sava +1 more
TL;DR: In this article, the reverse time migration backscattering energy in conventional and extended images is analyzed and it is shown that this synchronization and focusing information is sensitive to velocity errors, which implies that a correct velocity model produces reverse time migrations with maximum energy, and therefore, before filtering the backscattered energy, they should try to obtain a model that maximizes it.