Using inverse transmission matrices for Marchenko redatuming in highly complex media

Ivan Vasconcelos, Kees Wapenaar, Joost Van Der Neut, Colin Thomson, Matteo Ravasi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

19 Scopus citations

Abstract

The goal of Marchenko redatuming is to reconstruct, from single-sided reflection data, wavefields at virtual subsurface locations containing transmitted and reflected primaries and internal multiples, while relying on limited or no knowledge of discontinuties in subsurface properties. Here, we address the limitations of the current Marchenko scheme in retrieving waves in highly heterogeneous media, such as subsalt or sub-basalt. We focus on the initial focusing function that plays a key role in the iterative scheme, and propose an alternative focusing function that uses an estimate of the inverse transmission operator from a reference model that contains sharp contrasts (e.g., salt boundaries). Using a physics-driven estimate of the inverse transmission operator, we demonstrate that the new approach retrieves improved subsurface wave-fields, including enhanced amplitudes and internal multiples, in a subsalt environment.
Original languageEnglish (US)
Title of host publicationSEG Technical Program Expanded Abstracts
PublisherSociety of Exploration Geophysicistsweb@seg.org
Pages5081-5086
Number of pages6
DOIs
StatePublished - Jan 1 2015
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2022-09-13

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