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Surface-consistent Residual Phase CorrectionsNormal access

Author: K. Garceran
Event name: 76th EAGE Conference and Exhibition 2014
Session: Decon, Deghost and Much More
Publication date: 16 June 2014
DOI: 10.3997/2214-4609.20140694
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 4.07Mb )
Price: € 20

Summary:
Near surface variations not only create time delays but can create a more complicated frequency dependent phase distortion. The estimation of surface-consistent residual statics can be generalized to the phase, with the same attempt to maximize the stack power. The method presented in this paper, based on cross-spectral analysis, allows performing surface consistent residual phase corrections. This approach has the advantages to avoid the phase unwrapping and to use the full phase spectrum. Used after a first pass of surface-consistent residual statics or not, the proposed algorithm shows very encouraging results.


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