低信噪比条件下地震叠加速度的提取技术
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摘要
主要讨论了如何针对低信噪比地震资料进行更加精确的叠加速度提取问题。首先介绍了叠前多域LIFT去噪以及共反射面元叠加(CRS)等关键技术以提高地震数据的信噪比;其次研究了基于相位相关的连续速度分析方法以提高叠加速度提取的精度;最后总结出一套精确提取低信噪比条件下地震叠加速度的方法。
This paper mainly deals with the technique to precisely extract stacking velocity for low SNR seismic data.At first,the LIFT for pre-stack multi-domain de-noises technology and the common reflection surface stack technology were introduced,to improve the SNR seismic data.Then,a new method of continuous velocity analysis based on e phase correlation was presented to improve the precision of the extraction of stack velocity.Finally,a set of methods for accurate extraction of seismic velocity under the low SNR condition was summarized.
This paper mainly deals with the technique to precisely extract stacking velocity for low SNR seismic data.At first,the LIFT for pre-stack multi-domain de-noises technology and the common reflection surface stack technology were introduced,to improve the SNR seismic data.Then,a new method of continuous velocity analysis based on e phase correlation was presented to improve the precision of the extraction of stack velocity.Finally,a set of methods for accurate extraction of seismic velocity under the low SNR condition was summarized.
引文
[1]吴春红,张智勇,胡斌.低信噪比地震资料处理方法[J].中国科技信息,2005(10):17.
[2]许自强,李添才,万欢,等.三维深水崎岖海底区低信噪比地震资料处理策略[J].勘探地球物理进展,2010,32:99-106.
[3]苑益军,周芝旭,牛滨华,等.浅谈地震资料处理中的提高信噪比处理技术[J].石油地球物理勘探,2005,40(2):168-171.
[4]李添才,李列,陈瑜,等.利用LIFT技术衰减海上近道多次波[J].勘探地球物理进展,2010,33(2):107-111.
[5]王华忠,杨锴,马在田.从共反射点(CRP)到共反射面元(CRS)———共反射面元叠加的应用理论基础[C].北京:中国地球物理学会,2001.
[6]杨锴,马在田.关于共反射面元叠加方法在实际应用中的些思考[J].地球物理学进展,2005,20(1):122-161.
[7]谭未一,杨长春,李瑞忠,等.共反射面元叠加的实现途径及流程[J].地球物理学进展,2004,19(2):3252-3301.
[8]Li Z C,Sun X D,Zhao J Z,et al.Common reflection sur-face stack based on complex top surface topography[C]∥BGP Technical Seminar,Dalian China,2004:55-57.
[9]Chira-Oliva P,Cruz J C R,Garabito G,et al.2-D ZO CRSstack by considering an acquisition line with smooth topog-raphy[J].Revista Brasileira de Geofísica,2005,23(1):36-47.
[10]Bergler St,Mann J,Hubral P.The finite-offset CRS stack:an alternative stacking tool for subsalt imaging[C]∥SEGInternational Exposition and 72nd Annual Meeting,Geo-physical Institute,University of Karlsruhe,Germany,2002.
[11]王静,张军华,单联瑜,等.相位相关速度分析方法研究及效果比较[J].物探化探计算技术,2010,32(2):164-167.
[12]王德利,何樵登,韩立国.相位相关统计高分辨率速度分析[J].石油地球物理勘探,2001,36(2):198-204.
[2]许自强,李添才,万欢,等.三维深水崎岖海底区低信噪比地震资料处理策略[J].勘探地球物理进展,2010,32:99-106.
[3]苑益军,周芝旭,牛滨华,等.浅谈地震资料处理中的提高信噪比处理技术[J].石油地球物理勘探,2005,40(2):168-171.
[4]李添才,李列,陈瑜,等.利用LIFT技术衰减海上近道多次波[J].勘探地球物理进展,2010,33(2):107-111.
[5]王华忠,杨锴,马在田.从共反射点(CRP)到共反射面元(CRS)———共反射面元叠加的应用理论基础[C].北京:中国地球物理学会,2001.
[6]杨锴,马在田.关于共反射面元叠加方法在实际应用中的些思考[J].地球物理学进展,2005,20(1):122-161.
[7]谭未一,杨长春,李瑞忠,等.共反射面元叠加的实现途径及流程[J].地球物理学进展,2004,19(2):3252-3301.
[8]Li Z C,Sun X D,Zhao J Z,et al.Common reflection sur-face stack based on complex top surface topography[C]∥BGP Technical Seminar,Dalian China,2004:55-57.
[9]Chira-Oliva P,Cruz J C R,Garabito G,et al.2-D ZO CRSstack by considering an acquisition line with smooth topog-raphy[J].Revista Brasileira de Geofísica,2005,23(1):36-47.
[10]Bergler St,Mann J,Hubral P.The finite-offset CRS stack:an alternative stacking tool for subsalt imaging[C]∥SEGInternational Exposition and 72nd Annual Meeting,Geo-physical Institute,University of Karlsruhe,Germany,2002.
[11]王静,张军华,单联瑜,等.相位相关速度分析方法研究及效果比较[J].物探化探计算技术,2010,32(2):164-167.
[12]王德利,何樵登,韩立国.相位相关统计高分辨率速度分析[J].石油地球物理勘探,2001,36(2):198-204.
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