Multiple attenuation using beamforming onshore and offshore China

Hu, Tianyue; Hong, Fangzhou; Wang, Runqiu; Li, Guofa; Shu-liang, Wen

doi:10.1190/1.1508949

Cited by 7 publications

(2 citation statements)

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“…Considering the AVO characteristics of seismic reflections, adaptive beamforming was developed by Hu et al [8] . They also gave some successful applications in 2-D seismic data processing [8,9] . Hong et al [10] presented some good results about the study of the 3-D beamforming method.…”

Section: Introductionmentioning

confidence: 99%

Attenuating Multiples in Seismic Data of Low Signal‐Tonoise Ratio using Optimal Beamforming

Hong

Zhang

et al. 2004

Chinese J of Geophysics

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This paper presents the theory of optimal beamforming and its application to attenuating the multiples in seismic data of low signal-to-noise (S/N) ratio as a new method over some popular techniques like the f -k and the Radon transform. The key point of the theory is updating the constraint in optimal beamformer design by using adaptive beamformer with the quiescent weighted vector. Real data example shows that the newly developed optimal beamformer can improve the minimum variance unbiased (MVU) beamformer significantly in attenuating multiples in data of low folding and/or low S/N ratio without much extra cost.

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Section: Introductionmentioning

confidence: 99%

Attenuating Multiples in Seismic Data of Low Signal‐Tonoise Ratio using Optimal Beamforming

Hong

Zhang

et al. 2004

Chinese J of Geophysics

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“…Hu and White (1998) gave the details of the linearly constrained minimum variance (LCMV) beamforming theory and its implementations (Hu and White, 1998). Hu et al (2002) applied LCMV beamforming to attenuate the coherent noise from onshore and offshore China (Hu et al, 2002). Another type of robust beamformer is based on generalized linear constraints (GLC) beamforming, which can be thought of as an adaptive F-K filter adaptive in those parts of the frequency-wavenumber space that contain noise (Hong et al, 2003;, but fixed in the regions of the F-K space that contain the signal to be preserved.…”

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confidence: 99%

Beamforming with the generalized sidelobe canceller for coherent noise attenuation in 3D seismic data

Hong

2004

Appl. Geophys.

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This paper presents a new approach for attenuating coherent noise in 3D seismic data. An adaptive beamforming with generalized sidelobe canceller (GSC) design methodology is utilized here as a general form of linearly constrained adaptive beamforming structure. It consists of a fixed beamformer, and a signal-blocking matrix in front of an unconstrained adaptive beamformer. Considerationf of the complexity of the geometry for 3D seismic survey, the 3D beamforming with GSC technique is developed with two key points: (1) sorting along azimuth sections to simplify the relationship between traveltime and offset from 3D to 2D, and (2) dynamic binning scheme to avoid the possible poor folding in some azimuth sections. Both simulation result and real data example show that the newly developed 3D beamforming with GSC yields more credible results at a relative low cost, sufficient stability and good resolution.

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