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3D Shallow Target Imaging from Separated WavefieldsNormal access

Authors: C. Castillo and W. Söllner
Event name: 75th EAGE Conference & Exhibition incorporating SPE EUROPEC 2013
Session: Multi-component Imaging
Publication date: 10 June 2013
DOI: 10.3997/2214-4609.20130719
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 1.46Mb )
Price: € 20

Summary:
In marine seismic imaging, acquisition related footprints often contaminate the shallow parts of the subsurface. A main challenge today is to find new acquisition and imaging techniques in order to suppress those footprints. In this work, we firstly studied the influence of streamer spread related footprints and showed how these effects can be suppressed by imaging of separated wavefields. In this depth imaging approach, the up- and down-going wavefield components of dual-sensor data are separated and the receiver side ghosts (of primaries and sea surface multiples) are included as secondary sources in the imaging algorithm. Based on shallow water data from the North Sea, we show effective reduction of footprints and clear increase of resolution.


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