Q‐factor Estimation and Redatuming in a Lossy Medium Using the Marchenko Equation

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

19 Downloads (Pure)

Abstract

Marchenko Imaging is a new technology in geophysics, which enables us to retrieve Green's functions at any point in the subsurface having only reflection data. One of the assumptions of the Marchenko method is that the medium is lossless. One way to circumvent this assumption is to find a compensation parameter for the lossy reflection series so that the lossless Marchenko scheme can be applied. The main goals of this work are to: [1] use the Marchenko equation to estimate the attenuation in the subsurface, [2] find a compensation
parameter for the lossy reflection series so that the lossless Marchenko scheme can be applied. We propose a novel approach which makes it possible to calculate an effective temporal Q‐factor of the medium between a virtual source in the subsurface and receivers at the surface. This method is based on the minimization of the artefacts produced by the lossless Marchenko scheme. Artefacts have a very specific behavior: if the input data to the Marchenko equation are over‐ or under‐ compensated, the resulting artefacts will have an opposite polarity. Thus, they can be recognized. This approach is supported by a synthetic example for a 1D acoustic medium without a free surface.
Original languageEnglish
Title of host publication80th EAGE Conference and Exhibition 2018
Subtitle of host publication11-14 June, Copenhagen, Denmark
PublisherEAGE
Number of pages5
DOIs
Publication statusPublished - 2018
Event80th EAGE Conference and Exhibition 2018: Opportunities presented by the energy transition - Copenhagen, Denmark
Duration: 11 Jun 201814 Jun 2018
Conference number: 80
https://events.eage.org/2018/EAGE%20Annual%202018

Conference

Conference80th EAGE Conference and Exhibition 2018
Abbreviated titleEAGE 2018
CountryDenmark
CityCopenhagen
Period11/06/1814/06/18
Internet address

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Fingerprint

Dive into the research topics of 'Q‐factor Estimation and Redatuming in a Lossy Medium Using the Marchenko Equation'. Together they form a unique fingerprint.

Cite this