Autofocusing for retrieving the green's function in the presence of a free surface

S. Singh*, R. Snieder, J. Behura, J. Van Der Neut, K. Wapenaar, E. Slob

*Corresponding author for this work

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

2 Citations (Scopus)

Abstract

Recent work on autofocusing with the Marchenko equation has shown how the Green's function for a virtual source in the subsurface can be obtained from reflection data. The response to the virtual source is the Green's function from the location of the virtual source to the surface. The Green's function is retrieved using only the reflection response of the medium and an estimate of the first arrival at the surface from the virtual source. Current techniques, however, only include primaries and internal multiples. Therefore, all surface-related multiples must be removed from the reflection response prior to the Green's function retrieval. Here, we present a new scheme that includes primaries, internal multiples, and free-surface multiples. In other words, we retrieve the Green's function in the presence of the free surface. The information needed for the retrieval are the reflection response at the acquisition surface and an estimate of the first arrival at the surface from the virtual source. The reflection response, in this case, includes the free-surface multiples; this makes it possible to include these multiples in the imaging operator and it obviates the need for surface-related multiple elimination.

Original languageEnglish
Title of host publication76th European Association of Geoscientists and Engineers Conference and Exhibition 2014
Subtitle of host publicationExperience the Energy - Incorporating SPE EUROPEC 2014
PublisherEAGE
Pages141-145
Number of pages5
ISBN (Print)9781632666949
DOIs
Publication statusPublished - 2014
Event76th European Association of Geoscientists and Engineers Conference and Exhibition 2014: Experience the Energy - Incorporating SPE EUROPEC 2014 - Amsterdam, Netherlands
Duration: 16 Jun 201419 Jun 2014

Publication series

Name76th European Association of Geoscientists and Engineers Conference and Exhibition 2014: Experience the Energy - Incorporating SPE EUROPEC 2014

Conference

Conference76th European Association of Geoscientists and Engineers Conference and Exhibition 2014: Experience the Energy - Incorporating SPE EUROPEC 2014
CountryNetherlands
CityAmsterdam
Period16/06/1419/06/14

Fingerprint

Dive into the research topics of 'Autofocusing for retrieving the green's function in the presence of a free surface'. Together they form a unique fingerprint.

Cite this