Ground-roll noise attenuation by application of 2D discrete wavelet transform in radial trace domain

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Hoseinnia Hessam; ROSHANDEL KAHOO AMIN; TOKHMCHI BEHZAD

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Journal: JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS Year:2017 | Volume:3 | Issue:1 Page(s): 119-130

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Title

Ground-roll noise attenuation by application of 2D discrete wavelet transform in radial trace domain

Author(s)

Hoseinnia Hessam | ROSHANDEL KAHOO AMIN | TOKHMCHI BEHZAD | Issue Writer Certificate

Keywords

2D Discrete Wavelet Transform

Radial Trace Transform

Ground-Roll Noise

Coherent Noise Attenuation

Abstract

Reflection seismic data is often contaminated by a variety of coherent and incoherent noises that influence the reliability of the seismic data to provide a better understanding of the hydrocarbon reservoir characteristics. The groundroll noise is characterized by dispersive wave, low frequency, high amplitude that propagates along and near the surface of the earth and will often obscures the seismic reflection data. Removal of this type of noise is an essential part of land seismic data processing. Most of Ground-Roll Noise removal or attenuation methods are based on transforms. Radial Trace Transform and wavelet transform are two of the most important and common transforms, which are used to attenuate Ground-Roll Noise. Various methods have been introduced by different authors to attenuate the Ground-Roll Noise. In this paper, we have used the wavelet transform on radial basis to attenuate the Ground-Roll Noise. The method is based on the joint application of the two-dimensional discrete wavelet and radial transforms in order to eliminate the coherent noise, especially Ground-Roll Noise. Since the Radial Trace Transform reassign the linear events in the x-t domain into vertical events in the r-t domain, it provides a pleasant framework for two-dimensional (2D) discrete wavelet transform. The de-noised signal can be obtained by suppressing the vertical band of one-level, 2D Discrete Wavelet Transform of the radial transformed seismic gather followed by transforming back the filtered radial-wavelet transform into the x-t domain. To evaluate the efficiency of the proposed method to eliminate the Ground-Roll Noise, we have tested the method on a real reflection seismic gather from an oilfield in southwest of Iran. We have also compared the obtained results with those from the f – k filtering for Ground-Roll Noise suppression from seismic data. The results obtained from applying the proposed method on the real data test prove that the proposed method for Ground-Roll Noise attenuation is as good as, or better than, those produced using f – k filtering.

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APA: Copy

Hoseinnia, Hessam, ROSHANDEL KAHOO, AMIN, & TOKHMCHI, BEHZAD. (2017). Ground-roll noise attenuation by application of 2D discrete wavelet transform in radial trace domain. JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS, 3(1 ), 119-130. SID. https://sid.ir/paper/268596/en

Vancouver: Copy

Hoseinnia Hessam, ROSHANDEL KAHOO AMIN, TOKHMCHI BEHZAD. Ground-roll noise attenuation by application of 2D discrete wavelet transform in radial trace domain. JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS[Internet]. 2017;3(1 ):119-130. Available from: https://sid.ir/paper/268596/en

IEEE: Copy

Hessam Hoseinnia, AMIN ROSHANDEL KAHOO, and BEHZAD TOKHMCHI, “Ground-roll noise attenuation by application of 2D discrete wavelet transform in radial trace domain,” JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS, vol. 3, no. 1 , pp. 119–130, 2017, [Online]. Available: https://sid.ir/paper/268596/en

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