反馈迭代法在自由表面多次波压制中的应用
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摘要
在地震资料处理中,多次波压制的重点是自由表面多次波。阐述了利用反馈迭代法预测并压制自由表面多次波的基本原理和实现步骤。反馈迭代法不需要地下界面信息,能够适应较复杂地下结构的情况。设计了水平海底层状介质模型和起伏海底层状介质模型,对反馈迭代法压制自由表面多次波的效果进行了试验和分析,并与抛物线拉冬变换处理结果进行了对比。结果表明,反馈迭代法在迭代次数较少的情况下就能有效地去除合成地震记录中的自由表面多次波;抛物线拉冬变换的压制效果不太理想,处理后的结果中残留有较强的自由表面多次波。
In seismic data processing,free surface multiples attenuation is important in multiples attenuation.The principles and imple- mentations of using feedback iteration method for predicting and e- liminating the free surface multiples are described.Feedback itera- tion method need not any information of underground interfaces and is adaptable to complex underground structures.Flat and fluctuant sea bottom layer medium model were designed and the efficiency of the feedback iteration method tested and analyzed.Compared with the processing results with parabolic Radon transform,the feed- back iteration method can effectively attenuate the free surface multiples in synthetic seismic data with fewer iteration times;while the attenuation result of parabolic Radon transform is not ideal, some strong residuals of the free surface multiples still exist after processing.
In seismic data processing,free surface multiples attenuation is important in multiples attenuation.The principles and imple- mentations of using feedback iteration method for predicting and e- liminating the free surface multiples are described.Feedback itera- tion method need not any information of underground interfaces and is adaptable to complex underground structures.Flat and fluctuant sea bottom layer medium model were designed and the efficiency of the feedback iteration method tested and analyzed.Compared with the processing results with parabolic Radon transform,the feed- back iteration method can effectively attenuate the free surface multiples in synthetic seismic data with fewer iteration times;while the attenuation result of parabolic Radon transform is not ideal, some strong residuals of the free surface multiples still exist after processing.
引文
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2 Weglein A B.Multiple attenuation:an overview of re- cent advances and the road ahead [J].The Leading Edge,1999,18(1):40～44
3牛滨华，沈操，黄新武，等．波动方程压制多次波的技术方法[J]．地学前缘，2002，9(2)：511～517
4李鹏，刘伊克，常旭，等．多次波问题的研究进展[J]．地球物理学进展，2006，21(3)：888～897
5王维红，崔宝文，刘洪．表面多次波衰减的研究现状与进展[J]．地球物理学进展，2007，22(1)：156～164
6胡天跃．地震资料叠前去噪技术的现状与未来[J]．地球物理学进展，2002，17(2)：218～223
7陈见伟，胡冰．琼东南深海盆地三维地震多次波组合压制方法[J]．石油物探，2008，47(1)：55～60
8李丽青，梁蓓雯，徐华宁．海上单道地震资料中多次波的衰减[J]．石油物探，2007，46(5)：457～462
9胡天跃，王润秋，温书亮．聚束滤波法消除海上地震资料的多次波[J]．石油地球物理勘探，2002，37(1)：18～23
10 Anstey N A,Newman P.The sectional auto-correlo- gram and:The sectional retro-correlogram[J].Geo- physical Prospecting,1966,14(4):389～426
11 Kennett B L N.The suppression of surface multiples on seismic records[J].Geophysical Prospecting,1979, 27(3):584～600
12 Riley D C,Claerbout J F.2-D multiple reflections[J]. Geophysics,1976,41 (4):592～620
13 Berkhout A J.Seismic migration:imaging of acoustic energy by wavefield exploration[M].2th ed.Amster- dam:Elsevier Science Publ Co Inc,1982.211～218
14 Verschuur D J.Surface-related multiple elimination: an inversion approach[D].Delft:University of Tech- nology,1991
15 Verschuur D J,Berkhout A J,Wapenaar C P A.Adap- tive surface-related multiple elimination[J].Geophys- ics,1992,57(9):1166～1177
16 Verschuur D J,Berkhout A J.Estimation of multiple scattering by iterative inversion,partⅡ:practical as- pects and examples [J].Geophysics,1997,62 (5): 1596～1611
17 Berkhout A J.Multiple removal based on the feedback model[J].The Leading Edge,1999,18(1):27～131
18 Berkhout A J,Verschuur D J.Estimation of multiple scattering by iterative inversion,partⅠ:theoretical considerations[J].Geophysics,1997,62 (5):1586～1595
19谭绍泉，徐淑合，朱卫强，等．基于波动理论消除表层多次波[J]．石油大学学报(自然科学版)，2004，28(5)：30～33
20 Matson K.An overview of wavelet estimation using free-surface multiple removal[J].The Leading Edge, 2000,19(1):50～55
2 Weglein A B.Multiple attenuation:an overview of re- cent advances and the road ahead [J].The Leading Edge,1999,18(1):40～44
3牛滨华，沈操，黄新武，等．波动方程压制多次波的技术方法[J]．地学前缘，2002，9(2)：511～517
4李鹏，刘伊克，常旭，等．多次波问题的研究进展[J]．地球物理学进展，2006，21(3)：888～897
5王维红，崔宝文，刘洪．表面多次波衰减的研究现状与进展[J]．地球物理学进展，2007，22(1)：156～164
6胡天跃．地震资料叠前去噪技术的现状与未来[J]．地球物理学进展，2002，17(2)：218～223
7陈见伟，胡冰．琼东南深海盆地三维地震多次波组合压制方法[J]．石油物探，2008，47(1)：55～60
8李丽青，梁蓓雯，徐华宁．海上单道地震资料中多次波的衰减[J]．石油物探，2007，46(5)：457～462
9胡天跃，王润秋，温书亮．聚束滤波法消除海上地震资料的多次波[J]．石油地球物理勘探，2002，37(1)：18～23
10 Anstey N A,Newman P.The sectional auto-correlo- gram and:The sectional retro-correlogram[J].Geo- physical Prospecting,1966,14(4):389～426
11 Kennett B L N.The suppression of surface multiples on seismic records[J].Geophysical Prospecting,1979, 27(3):584～600
12 Riley D C,Claerbout J F.2-D multiple reflections[J]. Geophysics,1976,41 (4):592～620
13 Berkhout A J.Seismic migration:imaging of acoustic energy by wavefield exploration[M].2th ed.Amster- dam:Elsevier Science Publ Co Inc,1982.211～218
14 Verschuur D J.Surface-related multiple elimination: an inversion approach[D].Delft:University of Tech- nology,1991
15 Verschuur D J,Berkhout A J,Wapenaar C P A.Adap- tive surface-related multiple elimination[J].Geophys- ics,1992,57(9):1166～1177
16 Verschuur D J,Berkhout A J.Estimation of multiple scattering by iterative inversion,partⅡ:practical as- pects and examples [J].Geophysics,1997,62 (5): 1596～1611
17 Berkhout A J.Multiple removal based on the feedback model[J].The Leading Edge,1999,18(1):27～131
18 Berkhout A J,Verschuur D J.Estimation of multiple scattering by iterative inversion,partⅠ:theoretical considerations[J].Geophysics,1997,62 (5):1586～1595
19谭绍泉，徐淑合，朱卫强，等．基于波动理论消除表层多次波[J]．石油大学学报(自然科学版)，2004，28(5)：30～33
20 Matson K.An overview of wavelet estimation using free-surface multiple removal[J].The Leading Edge, 2000,19(1):50～55
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