Synchronized multi-level source, a robust broadband marine solution

Siliqi, R.; Payen, Thierry; Sablon, Ronan; Desrues, Karine

doi:10.1190/segam2013-0966.1

Cited by 22 publications

(7 citation statements)

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“…Some of them require sophisticated acquisition technologies, such as variable-depth streamers (Soubaras and Dowle 2010), multi-level sources and receivers (Posthumus 1993; * Email: anton21egorov@gmail.com A part of the results from this paper was presented as an ePoster presentation at the 2016 EAGE Annual Meeting (May 2016, Vienna). Siliqi et al 2013) and multicomponent recording (Barr and Sanders 1989). There are also processing-based solutions to the deghosting problem, the algorithms that do not require any changes in the standard acquisition configuration and can be used to process single-component data.…”

Section: Introductionmentioning

confidence: 99%

A method for deghosting of data recorded with a streamer of arbitrary shape in rough sea conditions

Denisov

Egorov

Burtsev

2018

Geophysical Prospecting

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Deghosting of pressure‐only data has become a routine in marine seismic processing. Most existing techniques suffer from noise susceptibility or excessive simplification of the used ghost model, which leads to difficulties in removing the ghost waves. The algorithm presented in this paper is based on the wavefield extrapolation theory, and is capable of taking into account arbitrary streamer shapes and rough sea surfaces. The computations are performed in the frequency domain and come down to solving systems of linear equations. Regularization and data‐adaptive statistical optimization of the parameters prevent noise amplification. We describe the theory of the method and test it against synthetic and field datasets with different streamer shapes for both rough and flat sea surfaces.

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Section: Introductionmentioning

confidence: 99%

A method for deghosting of data recorded with a streamer of arbitrary shape in rough sea conditions

Denisov

Egorov

Burtsev

2018

Geophysical Prospecting

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“…King and Poole (2015) show that, instead of using a horizontal free-surface assumption, use of wave height information can improve the fidelity of high frequencies after receiver deghosting. Poole et al (2016) show how spatially consistent deghosting may be achieved with use of the joint shot-receiver domain.…”

Section: Introductionmentioning

confidence: 99%

Wave height guided multishot receiver deghosting

Poole

King

2016

SEG Technical Program Expanded Abstracts 2016

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Many hydrophone only receiver deghosting algorithms make a flat sea surface assumption. In the case of significant ocean swell a variable free-surface datum is imposed and this assumption will not be met, resulting in degraded results. We extend a multi-shot receiver deghosting approach that satisfies the recorded primary and ghost wavefields by incorporating the presence of a variable free-surface at the source and receiver sides. The approach derives a τ-p sht-p rec model of the data at mean free-surface datum to estimate and remove the ghost. The approach is shown to produce high resolution receiver deghosting results with improved spatial consistency on a variable-depth streamer dataset from the North Sea.

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“…One approach to mitigate the acquisition limit of the free-surface ghost is to introduce ghost notch diversity so that no strong notch is evident. This can be achieved with a variable-depth streamer (Soubaras, 2010) at the receiver side and a multi-level source array at the source side (Siliqi et al, 2013).…”

Section: Introductionmentioning

confidence: 99%