边界和振幅特性保持的自适应噪声衰减方法

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Bibliographic Details
Published in应用地球物理：英文版 Vol. 11; no. 3; pp. 289 - 300
Main Author 蔡涵鹏 贺振华 李亚林 何光明 邹文 张洞君 刘璞
Format Journal Article
LanguageEnglish
Published 2014
Subjects
倾角导向滤波
噪声衰减
多尺度
置信度量
迭代停止准则
非线性各向异性
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ISSN1672-7975
1993-0658

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Bibliography:Multiscale; nonlinear anisotropic; dip-oriented filtering; noise attenuation; stopping criterion; iteration; confi dence measure
Cai Han-Peng,He Zhen-Hua,Li Ya-Lin,He Guang-Ming,Zou Wen,Zhang Dong-Jun,Liu Pu （1. Geophysical Exploration Company, Chuanqing Drilling Engineering Co. Ltd., CNPC, Chengdu 610213, China.; 2. Mountain Geophysical Technology Test Center, CNPC, Chengdu 610213, China.; 3. Key ＂Earth Detection and Information Technology＂ Lab of Ministry of Education, Chengdu University of Technology, Chengdu 610059, China.）
Noise intensity distributed in seismic data varies with different frequencies or frequency bands; thus, noise attenuation on the full-frequency band affects the dynamic properties of the seismic reflection signal and the subsequent seismic data interpretation, reservoir description, hydrocarbon detection, etc. Hence, we propose an adaptive noise attenuation method for edge and amplitude preservation, wherein the wavelet packet transform is used to decompose the full-band seismic signal into multiband data and then process these data using nonlinear anisotropic dip-oriented edge-preserving fi ltering. In the fi ltering, the calculated diffusion tensor from the structure tensor can be exploited to establish the direction of smoothing. In addition, the fault confidence measure and discontinuity operator can be used to preserve the structural and stratigraphic discontinuities and edges, and the decorrelation criteria can be used to establish the number of iterations. These parameters can minimize the intervention and subjectivity of the interpreter, and simplify the application of the proposed method. We applied the proposed method to synthetic and real 3D marine seismic data. We found that the proposed method could be used to attenuate noise in seismic data while preserving the effective discontinuity information and amplitude characteristics in seismic refl ection waves, providing high-quality data for interpretation and analysis such as high-resolution processing, attribute analysis, and inversion.
11-5212/O
ISSN:1672-7975
1993-0658