Shifted-elliptical nonstretch moveout correction of wide-angle seismic data in the τ-p domain, using an example from the Faeroe-Shetland Basin

Masoomzadeh, Hassan and Singh, Satish C. and Barton, Penny J. (2012) Shifted-elliptical nonstretch moveout correction of wide-angle seismic data in the τ-p domain, using an example from the Faeroe-Shetland Basin. Geophysics, 77 (5). B227-B236. ISSN 0016-8033, 1942-2156 DOI 10.1190/geo2011-0303.1

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Abstract

We developed a method of moveout correction in the τ-p<mml:math><mml:mrow><mml:mi>τ</mml:mi><mml:mtext>-</mml:mtext><mml:mi>p</mml:mi></mml:mrow></mml:math> domain to tackle some of the problems associated with processing wide-angle seismic reflection data, including residual moveout and normal-moveout stretching. We evaluated the concept of the shifted ellipse in the τ-p<mml:math><mml:mrow><mml:mi>τ</mml:mi><mml:mtext>-</mml:mtext><mml:mi>p</mml:mi></mml:mrow></mml:math> domain as an alternative to the well-known concept of the shifted hyperbola in the t-x<mml:math><mml:mrow><mml:mi>t</mml:mi><mml:mtext>-</mml:mtext><mml:mi>x</mml:mi></mml:mrow></mml:math> domain. We used this shifted-ellipse concept to address the problem of residual moveout caused by vertical heterogeneity in the subsurface. We also addressed the stretching problem associated with dynamic corrections by combining selected strips from a set of constant-moveout stacks generated using a shifted-ellipse equation. Application of this method to a wide-angle data set from the Faeroe-Shetland Basin provided an enhanced image of the subbasalt structure.

Item Type: Article
Uncontrolled Keywords: 2012AREP; IA64;
Subjects: 02 - Geodynamics, Geophysics and Tectonics
Divisions: 02 - Geodynamics, Geophysics and Tectonics
Journal or Publication Title: Geophysics
Volume: 77
Page Range: B227-B236
Identification Number: 10.1190/geo2011-0303.1
Depositing User: Sarah Humbert
Date Deposited: 27 Oct 2012 13:05
Last Modified: 23 Jul 2013 10:04
URI: http://eprints.esc.cam.ac.uk/id/eprint/2613

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