Dip-steering principal component filter using multi-window coherence scanning and interpolation
Cai Hanpeng1,2, He Zhenhua2,3, Li Yalin1, Zou Wen1, He Guangming1, Liu Kaiyuan3, Liu Wei4
1. Geophysical Exploration Company, Chuanqing Drilling Engineering Co. Ltd, CNPC, Chengdu, Sichuan 610213, China; 2. Key Lab of Earth Detection and Information Technology, Ministry of Education, Chengdu University of Technology, Chengdu, Sichuan 610059, China; 3. College of Geophysics, Chengdu University of Technology, Chengdu, Sichuan 610059, China; 4. Development and Production Seismic Division, BGP Inc, Zhuozhou, Hebei 072751, China
Abstract：We propose in the paper a dip-steering principal component filter based on multi-window coherence scanning and interpolation in order to remove seismic noise and simultaneously preserve reflection structure boundary and effective frequency components. Combining edge-preserving filtering, this method implements edge preservation and principal component filtering in multi-windows. Multi-trace eigenvalues are extracted from seismic records and seismic signals are reconstructed to improve data S/N ratio. 2D/3D apparent dips are calculated by multi-window coherence scanning and quadratic curve/surface fitting. Seismic data in the dip steering window with the maximum coherence value is aquatically selected as an input of the principal component filter. Real data applications show that the proposed method can preserve useful components and bandwidth of seismic data, and improve seismic vertical resolution. Therefore it voids fuzzy edge caused by filtering, and depicts clearly formation spatial distribution.
蔡涵鹏, 贺振华, 李亚林, 邹文, 何光明, 刘开元, 刘伟. 基于多窗口相干性的倾角导向主分量滤波[J]. 石油地球物理勘探, 2014, 49(3): 486-494.
Cai Hanpeng, He Zhenhua, Li Yalin, Zou Wen, He Guangming, Liu Kaiyuan, Liu Wei. Dip-steering principal component filter using multi-window coherence scanning and interpolation. OGP, 2014, 49(3): 486-494.
