[an error occurred while processing this directive] ������� 2010, 29(3) 503-508 DOI:     ISSN: 1004-5589 CN: 22-1111/P

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Gabor �任
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PubMed
Article by Cao, L. 1
Article by Sun, D. M. 2
Article by Han, L. G. 3
Article by Zhang, X. W. 3
Article by Shan, G. Y. 3
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�ؼ����� �ر�һ����   Gabor �任   ���޻�  
Research and application of Gabor surface-consistent deconvolution
CAO Lei-1, SUN Da-Ming-2, HAN Li-Guo-3, ZHANG Xian-Wen-3, SHAN Gang-Yi-3
1�� Exploration and Development Research Institute of Northeast Oil and Gas Branch��SinoPEC��Changchun 130062��China; 2�� Science and Technology Development of Northeast Oil and Gas Branch��SinoPEC��Changchun 130062��China; 3�� College of Geoexploration Science and Technology��Jilin University��Changchun 130026��China
Abstract:

The surface-consistent deconvolution applied at present can make spectrum decomposition in common shot point ( CSP) ��common receiver point ( CRP) ��common offset ( CO) and common midpoint ( CMP) domains to seismic record on the assumption of seismic wavelet being stable��but the attenuation effects of actual underground medium are not considered�� In order to truely reflect the reflection characteristics of underground medium�� Gabor surface-consistent deconvolution of seismic record has been processed in time-frequency domain�� This method can eliminates the effects of the wavelet excitation��acception effect and formation attenuation simultaneously�� Using offset and common midpoint information��the Q function component of deconvolution operator can be parameterized�� and estimates the seismic source excitation��geophone acception and formation attenuation in offset and common midpoint domain�� This method applied in data processing of Luzong concentration area has strong antinoise�� phase adaptation and thin-bed reflection compared with other surface-consistent deconvolutions��which overcomes the phenomena of frequency overcompensation or nonuniformity in different time-windows of the same wave group in spatial domain��and improves the resolution of seismic singal��

Keywords: surface-consistent   Gabor transformation   deconvolution  
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