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Enhanced 3D Broadband Processing - A Case Study from the Edvard Grieg FieldNormal access

Authors: N. Salaun, V. Cavalie, P. Borisevitch, D. Hardouin and A. Wright
Event name: 78th EAGE Conference and Exhibition 2016
Session: Seismic Noise Attenuation
Publication date: 31 May 2016
DOI: 10.3997/2214-4609.201601584
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 3.49Mb )
Price: € 20

Summary:
Data acquired in shallow water environments often exhibit a strong acquisition pattern relating to variations in incidence angle, azimuth and source signature from inner to outer streamers. These variations must be accurately compensated for during processing to reveal a spatially consistent 3D image of the data. With modern broadband acquisition this problem becomes more challenging as the frequency spectrum is wider. This North Sea case study, acquired with a multi-level source and variable depth streamer, presents an enhanced processing sequence containing 3D processing steps using different parameters for each frequency range. Results show the advantage of such a sequence to achieve a high definition image from the very shallow to the deep reservoir target.


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