Seismic fidelity de-noising with reflection anisotropy
Zhang Henglei1,2, Hu Zhe2, Hu Xiangyun2, Song Shuang3
1. Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education, Yangtze University, Wuhan, Hubei 430100, China;
2. Hubei Subsurface Multi-scale Imaging Key Laboratory, Institute of Geophysics and Geomatics, China University of Geosciences(Wuhan), Wuhan, Hubei 430074, China;
3. CNOOC Exploration Research Institute, Beijing 100028, China
Abstract：Combing the L2 norm with the L1 norm of seismic data,we propose a weighting function which transforms routine non-uniformity stacking for seismic data into uniformity stacking to suppress random noise and enhance the continuity of the reflection events.This approach improves seismic data precision for later data processing and interpretation.As reflection waves show anisotropic and noise is isotropic,we construct an anisotropic function and apply it in the weighted stacking to suppress noise based on the fidelity de-noising.Model and seismic data tests show that the proposed method can not only effectively suppress random noise but also preserve seismic amplitudes even weak reflection.
作者简介: 张恒磊,博士,讲师,1984年生;2011年获中国地质大学(武汉)地球探测与信息技术博士学位,曾在University of Sao Paulo做博士后研究,现在中国地质大学从事教学与科研工作。以第一作者在Geophysics等期刊发表论文20余篇。研究领域主要集中在重磁位场理论与重震联合反演、重磁异常精细处理与三维反演。
引用本文:
张恒磊, 胡哲, 胡祥云, 宋双. 基于反射波各向异性特征的保真去噪方法[J]. 石油地球物理勘探, 2017, 52(2): 233-241.
Zhang Henglei, Hu Zhe, Hu Xiangyun, Song Shuang. Seismic fidelity de-noising with reflection anisotropy. OGP, 2017, 52(2): 233-241.
Lin Hongbo,Ma Haitao,Xu Liping.A radical time-frequency peak filtering based on ROAD for suppressing spatially nonstationary random noise in seismic data.Chinese Journal of Geophysics,58(7):2546-2555.
Lin Hongbo,Ma Haitao,Li Yue et al.Elimination of seismic random noise based on the SW statistic adaptive TFPF.Chinese Journal of Geophysics,2015,58(12):4560-4567.
[3]
Deng X,Ma H,Li Y et al. Seismic random noise attenuation based on adaptive time-frequency peak filtering. Journal of Applied Geophysics,2015,113(10):31-37.
Liu Zhipeng,Zhao Wei,Chen Xiaohong et al.Local SVD for random noise supperssion of seismic data in frequency domain.OGP,2012,47(2):202-206.
[5]
Wang X,Gao J,Chen W et al. The seismic random noise attenuation method based on enhanced bandelet transform. Journal of Applied Geophysics,2015,116:146-155.
Fan Jichang,Wang Fuyun,Liu Mingjun et al.Denoise by dip-angle sweeping high-order correlation in wavelet scale and space domains.OGP,2008,43(5):514-517.
[9]
樊计昌,刘明军,王夫运等. 小波包节点域和空间域倾角扫描高阶相关去噪技术. 石油地球物理勘探,2009,44(6):695-699 Fan Jichang,Liu Mingjun,Wang Fuyun et al. Dip scanning high order correlation denoise technique in wavelet packet node field and space domain.OGP,2009,44(6):695-699.
Zhang Henglei,Liu Tianyou and Zhang Yuncui. The method of de-noise by dip-angle sweeping in curvelet and space domains based on high-order correlation.OGP,2010,45(2):208-214.
Zhang Henglei,Li Mingyong,Liu Tianyou.Joint denoising of correlation and thresholding in contourlet domain and its application to seismic data.Geomatics and Information Science of Wuhan University,2011,36(9):1047-1050.
Liu Cai,Li Hongxing,Tao Chunhui et al.A new fuzzy nesting multilevel median filter and its application to seismic data processing. Chinese Journal of Geophy-sics,2007,50(5):1534-1542.
Liu Yang,Liu Cai,Wang Dian et al.Application of time-variant median filtering technique to attenuation of seismic random noises.OGP,2008,43(3):327-332.
[15]
Liu Yang,Liu Cai and Wang Dian.A 1D time-varying median filter for seismic random,spike-like noise elimination.Geophysics,2009,74(1):v17-v24.
Liu Yang,Wang Dian,Liu Cai et al. Structure-oriented filtering and fault detection based on nonstationary similarity.Chinese Journal of Geophysics,2014,57(4):1177-1187.
Liu Yang,Wang Dian,Liu Cai et al. Weighted median filter based on local correlation and its application to post-stack random noise attenuation.Chinese Journal of Geophysics,2011,54(2):358-367.
Zhang Henglei,Liu Tianyou,Hu Xiangyun.Denoising by correlative stacking via L2 norm.OGP,2012,47(1):37-45.
[20]
Chen Y,Fomel S. Random noise attenuation using local signal-and-noise orthogonalization. Geophysics,2015,80(6):WD1-WD9.
[21]
Nazari Siahsar M A,Gholtashi S,Kahoo A R et al. Sparse time-frequency representation for seismic noise reduction using low-rank and sparse decomposition. Geophysics,2016,81(2):V31-V38.
[22]
Zhang Henglei,Ravat D,Marangoni Y R et al.NAV-Edge:Edge detection of potential field sources using normalized anisotropy variance.Geophysics,2014,79(3):J43-J53.
