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Triple Source Isolation: Results from a North Sea Field TestNormal access

Authors: J.O.A. Robertsson, F. Andersson, D.J. van Manen, K. Eggenberger, R. Walker, C.R. Berg, J. Gateman and I. Gimse
Event name: 80th EAGE Conference and Exhibition 2018
Session: Simultaneous Source - Acquisition and Processing
Publication date: 11 June 2018
DOI: 10.3997/2214-4609.201800646
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 2.43Mb )
Price: € 20

Summary:
Seabed seismic data have proven critical for addressing long-standing challenges in seismic imaging both for exploration and reservoir development and management. Significant advances have been made to bring down the cost and increase efficiency for deploying and retrieving ocean bottom nodes, such that the efficiency on the source side increasingly becomes the bottleneck for efficient operations. We present results from a recent field test in the North Sea where three source lines were acquired simultaneously from a single vessel without compromising inline sampling such that the fold is doubled compared to conventional flip-flop acquisition. The acquisition and processing technology is partially based on the science of signal apparition that allows for an optimally large part of the data corresponding to the individual sources to be exactly recovered while accurately reconstructing the full bandwidth beyond the region in frequency-wavenumber space of exact reconstruction. For the triple source field test presented here, the productivity increases 50% compared to conventional flip-flop acquisition or three-fold compared to conventional single-source full-fold acquisition suitable for reservoir development and management applications.


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