Two different algorithms for seismic interference noise attenuation

Gülünay, Necati

doi:10.1190/1.2840364

Cited by 29 publications

(16 citation statements)

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“…Time-sharing can have a significant impact on the economics of the survey, but although there are methods to remove this interfering energy (e.g., Gulunay, 2008), it is typically difficult to attenuate and time-sharing remains standard practice. While these surveys might be separated by many 10s or 100s of kilometers, the direct wave that travels through the water decays slowly in amplitude and can interfere with the neighboring survey.…”

Section: Seismic Interferencementioning

confidence: 99%

Tools and Techniques: Marine Seismic Methods

Robertsson

Laws²,

Kragh³

2015

Treatise on Geophysics

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Section: Seismic Interferencementioning

confidence: 99%

Tools and Techniques: Marine Seismic Methods

Robertsson

Laws²,

Kragh³

2015

Treatise on Geophysics

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“…The processing sequence included adaptive groundroll attenuation to remove surface waves (Le Meur et al, 2008), frequencydependent noise attenuation for removal of spurious industrial/environment noises (Gulunay, 2008), first arrival tomography (Taillandier et al, 2011), surface-consistent compensations that benefit from the latter simultaneous decomposition for deconvolution filters and amplitude scalars (Garceran and Le Meur, 2012), as well as long-wavelength amplitude corrections under well constraints. Moreover, a stochastic approach for surface-consistent residual statics coupled with a customized IT…”

Section: Array-free Processing Testmentioning

confidence: 99%

Processing and Preliminary Interpretation of the Ultra High-Density Full-Azimuth 3D Seismic Survey, Dukhan Field, Qatar

et al. 2014

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The Dukhan Field 3D seismic survey is an ultra high-density wide azimuth survey (i.e., point source and receiver, short source and receiver line interval, and full azimuth recording) intended to provide a significant uplift in quality and resolution to enable the imaging of reservoir sub-layers and fine-scale structural features. This paper presents the challenges and lessons learned from full-field processing and inversion. Seismic interpretation demonstrates added value to the field, which leads to improved reservoir models and support to well operations through improved well placement. Subtle structural, stratigraphic, and diagenetic features are now imaged.Knowledge gained from processing this survey includes: 1) cost, time, and effort invested on the Dukhan 3D survey is worthwhile as high quality results are obtained at 15m bin processing; 2) 3.75m bin processing is now possible, and could be performed to improve image quality over the full seismic bandwidth for all reservoir intervals; 3) Pre-Stack Depth Migration (PSDM) workflow is recommended for optimal offset and azimuth reconciliation and noise attenuation; 4) the adverse effect of near-surface geologic variability on seismic data quality can be improved by utilizing microgravity and resistivity (Vertical Electrical Sounding) techniques; and 5) proper preconditioning of the input data is critical for reliable prediction of reservoir properties away from well control.While industry's knowledge and experience in acquisition and field operation of ultra high-density full-azimuth seismic has increased over the last 3 years, processing of such data to ensure optimal imaging and reliable reservoir property predictions (e.g., porosity) has lagged. QP believes that lessons learned through this round of processing can provide insight for prediction of rock properties in the major Dukhan reservoirs.

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“…Some relevant articles discussing engineering improvements on marine seismic streamers are Schoenberger and Mifsud (1974), Bjelland (1993), Brink and Spackman (2004) and Dowle (2006). A few recent articles on software de-noising are Watts et al (1999), Gulunay (2008) and Elboth et al (2008). Important recent contributions to the understanding of flow noise on streamer arrays are the works by Knight (1996) and Cipolla and Keith (2008).…”

Section: Previous Workmentioning

confidence: 99%

“…Another approach used for seismic interference attenuation is variants of fx-prediction filtering. Gulunay et al (2004) and Gulunay (2008) discuss a number of such algorithms. The general idea is to suppress seismic interference by sorting it into a domain where it is random, compared to the reflection signal, and apply fx-prediction filtering.…”

Section: Seismic Interferencementioning

confidence: 99%

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Flow and swell noise in marine seismic data

2009

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Various weather-related mechanisms for noise generation during marine seismic acquisition were addressed from a fluid-dynamic perspective. This was done by analyzing a number of seismic lines recorded on modern streamers during nonoptimal weather conditions. In addition, we examined some of the complex fluid-mechanics processes associated with flow that surrounds seismic streamers. The main findings were that noise in the [Formula: see text] range is mostly the result of direct hydrostatic-pressure fluctuations on the streamer caused by wave motion. For normal swell noise above [Formula: see text] and for crossflow noise, a significant portion of the observed noise probably comes from dynamic fluctuations caused by the interaction between the streamer and fluid structures in its turbulent boundary layer. This explanation differs from most previous work, which has focused on streamer oscillations, bulge waves inside old fluid-filled seismic streamers, or strumming/tugging as the main source of weather-related noise. Although modern streamers are less sensitive to such sources of noise, their ability to tackle the influence on turbulent flow noise has not improved. This implies that noise induced by turbulent flow has increased its relative impact on modern equipment. To improve the signal-to-noise ratio on seismic data, design issues related to flow noise must be addressed.

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Two different algorithms for seismic interference noise attenuation

Cited by 29 publications

References 0 publications

Tools and Techniques: Marine Seismic Methods

Tools and Techniques: Marine Seismic Methods

Processing and Preliminary Interpretation of the Ultra High-Density Full-Azimuth 3D Seismic Survey, Dukhan Field, Qatar

Flow and swell noise in marine seismic data

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