Matteo Ravasi

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Matteo Ravasi
Matteo Ravasi headshot.png
Latest company Equinor ASA Research (formerly Statoil)
BSc Telecommunications engineering
PhD Geophysics
BSc university Politecnico Milano
PhD university University of Edinburgh

Matteo Ravasi is presented the J. Clarence Karcher Award for his work on Marchenko-based imaging (with the first application to field data), wavefield redatuming, and for developing a new theory of elastic reverse time migration based on wavefield interferometry. He has a truly exceptional publication record for a young researcher with, 10 papers coming out of a 3.5-year doctorate degree. He has a collection of very strong nomination letters from several of the most well-known researchers in exploration seismology. He quickly rose to senior researcher at Statoil and is noted as a generous collaborator.


Biography Citation for the SEG 2018 J. Clarence Karcher Award [1]

By Andrew Curtis, Odd Arve Solheim, and Ivan Vasconcelos

Matteo Ravasi's career began as a telecommunications engineer at Politecnico Milano in Italy from which he graduated cum laude in 2011. He studied for his doctorate degree at the University of Edinburgh which he completed in 2015, since which time he has worked at Equinor ASA Research (formerly Statoil).

His thesis, “Reciprocity-based imaging using multiply scattered waves,” developed a new elastic (P- and S-wave) reverse time migration theory based on seismic wavefield interferometry. This includes advances in both linear and nonlinear imaging conditions and multicomponent marine seismic wavefield extrapolation. Matteo showed that both migration and deconvolutional wavefield redatuming can be achieved without separating multicomponent wavefields into up/downgoing components, thus avoiding commonly used processing approximations and assumptions. He also codeveloped the first solid-earth (elastic) theory of Marchenko redatuming/imaging — a new approach for seismic subsurface wavefield extrapolation and imaging or migration. Matteo then led the world's first field-data Marchenko-based imaging application, imaging the North Sea Volve oil field.

Matteo's thesis title thus belies his extraordinary diversity and the potential impact of his resulting 10 full scientific papers, 14 extended abstracts, and three abstracts. Matteo also released two extensive software packages for nonlinear imaging and multidimensional deconvolution with full manuals and worked example data sets to companies sponsoring his research. Such productivity in less than 3.5 years is, we believe, almost unheard of.

In 2015, he continued his career with Equinor ASA, starting as a research scientist in the Geophysical Reservoir Monitoring Department. His productivity has already been rewarded — he was promoted to senior research scientist within a year. Matteo shows impressive scientific insight and the ability to generate new ideas and solutions for several business challenges. Several of his contributions have already been implemented, and a patent, “A method of redatuming geophysical data,” is already filed. In only one year in his new position, Matteo has developed new, efficient amplitude-variation-with-offset inversion tools for reservoir characterization. He also pioneered a novel form of the Marchenko redatuming method, namely the Rayleigh-Marchenko scheme, which further advances that application beyond previous limitations, such as handling free-surface multiples and bandwidth-limited data. His excellent technical skills, agile attitude, and collaborative mindset have clearly strengthened Equinor ASA's innovative edge within the reservoir disciplines.

These are truly outstanding achievements from an exceptional, dynamic, and already mature scientist, who is strong in theory, code development, and real-data applications of processing and imaging methods. He thoroughly deserves the recognition of our community and our encouragement to stay within the field of applied geoscience, and this is represented by the J. Clarence Karcher Award.


References

  1. The Leading Edge Volume 37, Issue 11