Synchronized Multi-level Source and Variable-depth Streamer - A Combined Ghost-free Solution for Broadband Marine Data
R. Sablon, T. Payen, D. Hardouin, D. Russier, A. Wright, N. Salaun, Y. Le Men, V. Danielsen and J.E. Lie
Event name: 75th EAGE Conference & Exhibition incorporating SPE EUROPEC 2013
Session: Broadband Seismic Acquisition & Processing I
Publication date: 10 June 2013
Info: Extended abstract, PDF ( 1.7Mb )
Price: € 20
Variable-depth streamer acquisition is a solution for broadband marine seismic, which utilizes a Joint deconvolution deghosting technique to remove the receiver ghosts and extend the usable primary bandwidth of up to 6 octaves, from 2.5 Hz to source notch. This receiver-side solution can be combined with a new synchronized multi-level source to unlock the source ghost limit, providing seismic data reaching 200 Hz while preserving the low frequencies. One key advantage of this complementary source and receiver acquisition technique is to provide seismic data which could be processed with sequences already developped for Variable-depth streamer, with the necessary updates required by better handling of extra high frequencies. A synchronized multi-level source combined with variable-depth streamer has been successfully tested and applied in various 2D and 3D cases, in both shallow and deep water environments in North Sea.