Multidip tomography formulation for migration velocity analysis

Raanan Dafni*, Moshe Reshef

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This study presents a new approach for migration velocity analysis by ray-based reflection tomography, formulated according to more than a single dip direction. It is suggested to generate multiparameter CIGs through depth migration in the local angle domain, and to extract independent moveout information from several dip directions. By obeying the linear tomographic principle, a multidip tomography system is formulated to include migration errors from both specular and non-specular directions. We introduce an analytic mechanism for the traveltime error calculation along non-specular rays. The proposed analysis of migration errors by a multiple dipangle orientation, via the multidip tomography formulation, enables better reconstruction of the updated velocity model, and improves the conditioning of the tomographic inversion.

Original languageEnglish
Title of host publicationSociety of Exploration Geophysicists International Exposition and 84th Annual Meeting (SEG Denver 2014)
Subtitle of host publicationDenver, Colorado, USA 26-31 October 2014
PublisherSociety of Exploration Geophysicists
Pages4783-4787
Number of pages5
Volume5
ISBN (Print)9781634394857
DOIs
StatePublished - 2014
EventSEG 2014 : Society of Exploration Geophysicists International Exposition and Annual Meeting - Denver, CO, United States
Duration: 26 Oct 201131 Oct 2011
Conference number: 84

Publication series

NameSEG Technical Program Expanded Abstracts
PublisherSociety of Exploration Geophysicists
ISSN (Print)1052-3812
ISSN (Electronic)1949-4645

Conference

ConferenceSEG 2014 : Society of Exploration Geophysicists International Exposition and Annual Meeting
Abbreviated titleSEG 2014
Country/TerritoryUnited States
CityDenver, CO
Period26/10/1131/10/11

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