Time reversal based detection of subsurface scatterers

Matan Shustak, Evgeny Landa

Research output: Contribution to journalConference articlepeer-review

Abstract

Conventional seismic migration and inversion are inherently limited in their ability to detect and delineate small scale elements such as faults, pinchouts, karsts, fractures, fluid contact etc. However, those elements, smaller than the seismic wavelength, act as scattering points which can be effectively positioned using the time reversal (TR) principle. In this study, TR is used to spatially localize subsurface sources in passive seismic scenarios and scatterers in active seismic surveys, both having physical properties of a diffractor. The method uses back propagation of the time-reversed registered wavefield followed by analysis of the obtained focusing, based on a supervised learning approach. It doesn't include application of any imaging condition nor requires knowledge of the source wavelet and accounts for multiple scattering. The usefulness of the method is demonstrated on both synthetic and field examples.

Original languageEnglish
Pages (from-to)969-973
Number of pages5
JournalSEG Technical Program Expanded Abstracts
DOIs
StatePublished - 17 Aug 2017
EventSociety of Exploration Geophysicists International Exposition and 87th Annual Meeting, SEG 2017 - Houston, United States
Duration: 24 Sep 201729 Sep 2017

Fingerprint

Dive into the research topics of 'Time reversal based detection of subsurface scatterers'. Together they form a unique fingerprint.

Cite this