基于迭代虚同相轴方法的叠后层间多次波衰减（英文）
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摘要
基于虚同相轴原理的叠前层间多次反射波衰减技术的计算成本较高,在数据量较大时无法满足日增长的生产数据处理需求。针对该问题,提出了基于迭代算法的叠后虚同相轴预测层间多次波方法,并成功运用于二维叠后合成数据和实际地震数据。基于迭代算法的叠后虚同相轴方法需要一次反射波走时信息;相比于传统叠前虚同相轴方法,新方法增加了迭代计算过程,无需数据规则化,且具有更高的计算效率。实际陆上地震资料应用结果表明叠后虚同相轴方法能够显著衰减陆上层间多次波,突显深层一次波能量。
The attenuation of prestack internal multiples based on virtual seismic events is computationally costly and hinders seismic data processing. We propose a multiples attenuation method for poststack seismic data by approximating conventional virtual events. The proposed method is iterative. The proposed method is tested using 2D synthetic and the field poststack seismic datasets. Compared with the conventional virtual events method, the proposed method does not require data regularization and offers higher computation efficiency. The method requires to know the travel time of the primary reflection waves. The results of the application to 2D field datasets suggest that the proposed method attenuates the internal multiples while highlighting the deep primaries.
The attenuation of prestack internal multiples based on virtual seismic events is computationally costly and hinders seismic data processing. We propose a multiples attenuation method for poststack seismic data by approximating conventional virtual events. The proposed method is iterative. The proposed method is tested using 2D synthetic and the field poststack seismic datasets. Compared with the conventional virtual events method, the proposed method does not require data regularization and offers higher computation efficiency. The method requires to know the travel time of the primary reflection waves. The results of the application to 2D field datasets suggest that the proposed method attenuates the internal multiples while highlighting the deep primaries.
引文
An,S.,Hu,T.,Liu,J.,and Peng,G.,2017,Scheme of applying virtual event method for internal multiples on land seismic data:CGS/SEG International Geophysical Conference,SEG,Extended Abstracts,391-394.
Berkhout,A.J.,and Verschuur,D.J.,1997,Estimation of multiple scattering by iterative inversion,Part I:Theoretical considerations:Geophysics,62(5),1586-1595.
Berkhout,A.J.,and Verschuur,D.J.,2005,Removal of internal multiples with the common-focus-point(CFP)approach:Part 1-Explanation of the theory:Geophysics,70(3),V45-V60.
Brookes,D.,2011,Case studies in 3D interbed multiple attenuation:The Leading Edge,30(8),914-918.
Guitton,A.,and Verschuur,D.J.,2004,Adaptive subtraction of multiples using the L1-norm:Geophysical Prospecting,52(1),27-38.
Ikelle,L.T.,2006,A construct of internal multiples from surface data only:the concept of virtual seismic events:Geophysical Journal International,164(2),383-393.
Ikelle,L.T.,Erez,I.,and Yang,X.,2009,Scattering diagrams in seismic imaging:More insights into the construction of virtual events and internal multiples:Journal of Applied Geophysics,67(2),150-170.
Jakubowicz,H.,1998,Wave equation prediction and removal of interbed multiples:68th SEG Annual International Meeting,SEG,Expanded Abstracts,1527-1530.
Keydar,S.,Lande,E.,Gurevich,B.,and Gelchinsky,B.,1997,Multiple prediction using wavefront characteristics of primary reflections:59th EAGE Conference and Exhibition,EAGE,Expanded Abstracts.
Liu,J.,and Hu,T.,2017a,Internal Multiple Attenuation by Iterative Construction of Virtual Events:79th EAGEConference and Exhibition,EAGE,Expanded Abstracts.
Liu,J.,and Hu,T.,2017b,Inversion based internal multiple attenuation study:CGS/SEG International Geophysical Conference,SEG,Expanded Abstracts,561-564.
Lopez,G.A.,and Verschuur,D.J.,2015,Closed-loop surface-related multiple elimination and its application to simultaneous data reconstruction:Geophysics,80(6),V189-V199.
van Borselen,R.,2002,Data-driven interbed multiple removal:Strategies and examples:72nd SEG Annual International Meeting,SEG,Expanded Abstracts,2106-2109.
van Groenestijn,G.J.,and Verschuur,D.J.,2009,Estimating primaries by sparse inversion and application to near-offset data reconstruction:Geophysics,74(3),A23-A28.
Verschuur,D.J.,and Berkhout,A.J.,2005,Removal of internal multiples with the common-focus-point(CFP)approach:Part 2-Application strategies and data examples:Geophysics,70(3),V61-V72.
Verschuur,D.J.,and Berkhout,A.J.,2015,From removing to using multiples in closed-loop imaging:The Leading Edge,34(7),744-759.
Wang,D.K.,Liu,H.S.,Tong,S.Y.,and Zhu,W.Q.,2015,Ocean-bottom cable data multiple suppression based on equipoise pseudo-multichannel matching filter:Applied Geophysics,12(2),179-186.
Wu,J.,Wu,Z.,Hu,T.,He,Y.,Wang,P.,Yan,G.,and Li,L.,2013,Seismic internal multiple attenuation based on constructing virtual events:Chinese Journal of Geophysics(in Chinese),56(3),985-994.
Ypma,F.,and Verschuur,D.J.,2013,Estimating primaries by sparse inversion,a generalized approach:Geophysical Prospecting,61(s1),94-108.
Zhou,Y.,Wang,R.,Yuan,Y.,Wang,S.,Huang,W.,Zhou,Y.,and Chen,X.,2017,Attenuation of internal multiples with mathematical morphology filtering:87th SEGAnnual International Meeting,SEG,Expanded Abstracts,4844-4848.
Berkhout,A.J.,and Verschuur,D.J.,1997,Estimation of multiple scattering by iterative inversion,Part I:Theoretical considerations:Geophysics,62(5),1586-1595.
Berkhout,A.J.,and Verschuur,D.J.,2005,Removal of internal multiples with the common-focus-point(CFP)approach:Part 1-Explanation of the theory:Geophysics,70(3),V45-V60.
Brookes,D.,2011,Case studies in 3D interbed multiple attenuation:The Leading Edge,30(8),914-918.
Guitton,A.,and Verschuur,D.J.,2004,Adaptive subtraction of multiples using the L1-norm:Geophysical Prospecting,52(1),27-38.
Ikelle,L.T.,2006,A construct of internal multiples from surface data only:the concept of virtual seismic events:Geophysical Journal International,164(2),383-393.
Ikelle,L.T.,Erez,I.,and Yang,X.,2009,Scattering diagrams in seismic imaging:More insights into the construction of virtual events and internal multiples:Journal of Applied Geophysics,67(2),150-170.
Jakubowicz,H.,1998,Wave equation prediction and removal of interbed multiples:68th SEG Annual International Meeting,SEG,Expanded Abstracts,1527-1530.
Keydar,S.,Lande,E.,Gurevich,B.,and Gelchinsky,B.,1997,Multiple prediction using wavefront characteristics of primary reflections:59th EAGE Conference and Exhibition,EAGE,Expanded Abstracts.
Liu,J.,and Hu,T.,2017a,Internal Multiple Attenuation by Iterative Construction of Virtual Events:79th EAGEConference and Exhibition,EAGE,Expanded Abstracts.
Liu,J.,and Hu,T.,2017b,Inversion based internal multiple attenuation study:CGS/SEG International Geophysical Conference,SEG,Expanded Abstracts,561-564.
Lopez,G.A.,and Verschuur,D.J.,2015,Closed-loop surface-related multiple elimination and its application to simultaneous data reconstruction:Geophysics,80(6),V189-V199.
van Borselen,R.,2002,Data-driven interbed multiple removal:Strategies and examples:72nd SEG Annual International Meeting,SEG,Expanded Abstracts,2106-2109.
van Groenestijn,G.J.,and Verschuur,D.J.,2009,Estimating primaries by sparse inversion and application to near-offset data reconstruction:Geophysics,74(3),A23-A28.
Verschuur,D.J.,and Berkhout,A.J.,2005,Removal of internal multiples with the common-focus-point(CFP)approach:Part 2-Application strategies and data examples:Geophysics,70(3),V61-V72.
Verschuur,D.J.,and Berkhout,A.J.,2015,From removing to using multiples in closed-loop imaging:The Leading Edge,34(7),744-759.
Wang,D.K.,Liu,H.S.,Tong,S.Y.,and Zhu,W.Q.,2015,Ocean-bottom cable data multiple suppression based on equipoise pseudo-multichannel matching filter:Applied Geophysics,12(2),179-186.
Wu,J.,Wu,Z.,Hu,T.,He,Y.,Wang,P.,Yan,G.,and Li,L.,2013,Seismic internal multiple attenuation based on constructing virtual events:Chinese Journal of Geophysics(in Chinese),56(3),985-994.
Ypma,F.,and Verschuur,D.J.,2013,Estimating primaries by sparse inversion,a generalized approach:Geophysical Prospecting,61(s1),94-108.
Zhou,Y.,Wang,R.,Yuan,Y.,Wang,S.,Huang,W.,Zhou,Y.,and Chen,X.,2017,Attenuation of internal multiples with mathematical morphology filtering:87th SEGAnnual International Meeting,SEG,Expanded Abstracts,4844-4848.