--> Random Noise Removal of Seismic Attribute Data via Complex-valued Wavelets
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AAPG Bulletin, Vol. 90 (2006), Program Abstracts (Digital)

7th Middle East Geosciences Conference and Exhibition
Manama, Bahrain
March 27-29, 2006

ABSTRACT: Random Noise Removal of Seismic Attribute Data via Complex-valued Wavelets

Saleh Al-Dossary1 and Leon Hu2
1 Saudi Aramco, PO BOX 8851, Dhahran, 31311, Saudi Arabia, phone: +96638731976, fax: +96638731202, [email protected]
2 Saudi Aramco, PO BOX 2671, Dhahran, 31311, Saudi Arabia

Volumetric curvature and coherent energy gradient attributes can improve the detection of linear geologic features but may introduce high Previous HitfrequencyNext Hit noise. Existing edge-preserving smoothing algorithms can be used to minimize the high-Previous HitfrequencyNext Hit noise but they typically do not preserve small vertical lineaments well. This paper introduces a new 3D seismic noise reduction technique that preserves very small features and lateral discontinuities (edges) without introducing high Previous HitfrequencyNext Hit noise or phase distortion. Phase distortion is minimized through the use of a non-orthogonal, complex valued, log-Gabor wavelets in the Previous HitfrequencyNext Hit domain. The theory and examples of its application to both synthetic and real 3 -D data from Saudi Arabia are described in this paper. These examples clearly show a reduction in random noise along with the preservation of vertical lineaments and high-Previous HitfrequencyTop signal.

 

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