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EVENING TALK: Diffraction Imaging

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Imperial College - Royal School of Mines

Prince Consort Rd

Kensington

London

SW7 2BP

United Kingdom

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About the Speaker

Evgeny Landa obtained his MSc degree in Geophysics at the Novosibirsk University (1972), and his PhD degree in Geophysics at Tel Aviv University (1986). He started his carrier in Novosibirsk, former Soviet Union, as a researcher, and continued as Sr. Geophysicist at the Siberian Geophysical Expedition. After immigrating to Israel, he worked at the Geophysical Institute of Israel as Researcher, Head of the R&D group, and Head of the Seismic Department (1981—2002). During 2002-2014 he worked as Director of OPERA (Applied Geophysical Research Group) in Pau (France) where he was involved in different aspects of seismic processing, velocity modelling and time/depth imaging. His work on velocity model building by coherency inversion has had a strong impact on today’s seismic depth imaging, and forms an important part of the GeoDepth (Paradigm) software package. He currently works as Professor at the Tel Aviv University, and as Lead R&D Advisor for PetroTrace. His research focuses on non-reflecting energy for increasing seismic resolution and imaging, without precise velocity information. He has published more than 60 papers, and his book ‘Beyond Conventional Seismic Imaging’. He is a member of EAGE and SEG, from which he received the Awards of Best Paper (SEG, Honorary Mentioned, 2005) and the EAGE Eotvos Award (2007 and 2009).

The Abstract

The correct identification of geological discontinuities, such as faults, pinch-outs, fracture zones, and small geo-features of a size comparable to the wavelength, is an important problem in seismic interpretation. Unfortunately, identifying such geological elements from standard reflection seismic data has generally provided low reliability. However, it is precisely the seismic response from geological discontinuities and diffractors that is encoded in the scattered wavefield, and trough diffraction imaging it is possible to obtain a high-resolution, high-confidence, image of these geo-features.

The present lecture provides information that help to understand the nature, importance, and implications of the seismic diffraction phenomena. It reviews several methods for the detection, separation, and imaging of seismic diffractions, and it illustrates them on both synthetic and real data examples. The presentation will try to emphasise the physical meaning of the described procedures and algorithms, rather than providing rigorous mathematical derivations.

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The entrance to the venue is from Prince Consort Rd. Please, note that the door closes at 18:30! Please, arrive earlier.

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Date and Time

Location

Imperial College - Royal School of Mines

Prince Consort Rd

Kensington

London

SW7 2BP

United Kingdom

View Map

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