Limitations of the exploding reflector model in sub-salt imaging

Oren Peles, Allon Bartana, Dan Kosloff, Zvi Koren

Research output: Contribution to conferencePaperpeer-review

Abstract

The exploding reflector model has been the basis for wave equation post stack migration. It enables imaging of zero offset data with one downward continuation step, as opposed to the multiple downward continuation steps required in pre-stack migration. However, the exploding reflector model does not account for reflections for which the corresponding down-going ray path differs from the up-going ray path. By means of a synthetic example which includes a high velocity inclusion, different alternatives for imaging of zero offset data are tested. The results show that the restriction to identical down-going and up-going ray paths causes discontinuities in the image of reflectors in regions beneath the high velocity inclusion. The limitations of the exploding reflector can be overcome by using multi arrival Kirchhoff migration, or for wave equation imaging, using pre-stack migration algorithms for the imaging of post-stack data. Both alternatives require an economic price.

Original languageEnglish
StatePublished - 2004
Event2004 Society of Exploration Geophysicists Annual Meeting, SEG 2004 - Denver, United States
Duration: 10 Oct 200415 Oct 2004

Conference

Conference2004 Society of Exploration Geophysicists Annual Meeting, SEG 2004
Country/TerritoryUnited States
CityDenver
Period10/10/0415/10/04

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