NDLI: Redefining marine towed-streamer acquisition

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Redefining marine towed-streamer acquisition

Content Provider	Semantic Scholar
Author	Widmaier, Martin O'Dowd, David Roalkvam, Carine
Copyright Year	2019
Abstract	F I R S T B R E A K I V O L U M E 3 7 I N O V E M B E R 2 0 1 9 5 7 crossline direction may result in spatial aliasing complications for any shot domain processing solutions. Nevertheless, high-density 3D surveys in regions with relatively shallow water depths and shallow geological targets such as in the Barents Sea have rapidly adopted triple-source shooting. While crossline bin sizes smaller than 18.75 m were difficult and costly to achieve in the past, the combination of high-density streamer spreads with multi-source configurations enable significantly improved spatial sampling without necessarily sacrificing acquisition efficiency. The move towards better spatial sampling can be regarded as the logical and necessary step following the success of multisensor broadband streamers: the recording of 3D broadband seismic data must be accompanied with appropriate spatial sampling in order to preserve the higher frequency content throughout the processing flow. While triple-source shooting has become common for high-density acquisition, novel surveys with quad-, penta-, and hexa-source configurations have also been reported by the industry (e.g., Hager and Fontana, 2017). Operational risk mitigation has also been a driver for triple-source shooting. One example is conducting marine seismic in areas with strong rip currents. It is safer in such environments to deploy spreads with less streamers and larger separations in order to minimize the risk of tangling of in-sea equipment.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://www.pgs.com/globalassets/technical-library/tech-lib-pdfs/fb_widmaier_et_al_nov_2019_widetowsources.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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