高密度双谱分析技术在LSH深水地震资料中的应用研究
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摘要
深水区的地震资料是采用长排列拖缆采集的,工区面积大,速度变化敏感,各向异性明显,传统人工速度分析技术不能满足工区的勘探开发需求,经研究,采用CGGVeritas的高密度双谱分析技术可以较好解决动校正问题,高效率高品质,提高了LSH深水地震资料的速度精度和密度,在全区得到推广应用,取得了很好的效果。
The seismic data in LSH deepwater area is collected by long arranged streamer,however,as the work area is large,the speed variation is sensitive and anisotropy is obvious in the area,the traditional artificial velocity analysis can not meet the needs of exploration and development in this work area.Through the research of CGGVeritas's high density spectral analysis technique,it proves that this technique can better solve the problem of NMO correction and improve the speed accuracy and density of the deepwater seismic data with high efficiency and high quality.Therefore,the technique is applied widely to the whole area,and has achieved very good results.
The seismic data in LSH deepwater area is collected by long arranged streamer,however,as the work area is large,the speed variation is sensitive and anisotropy is obvious in the area,the traditional artificial velocity analysis can not meet the needs of exploration and development in this work area.Through the research of CGGVeritas's high density spectral analysis technique,it proves that this technique can better solve the problem of NMO correction and improve the speed accuracy and density of the deepwater seismic data with high efficiency and high quality.Therefore,the technique is applied widely to the whole area,and has achieved very good results.
引文
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[2]Debashish Sarkar and Ilya Tsvankin.Migration ve-locity analysis in factorized VTI media[A].73rd SEGInternational Exposition&Annual Meeting[C].Dal-las,Texas:SEG,2003,1688～1692.
[3]Tsvankin L,Thomsen L.Nonhyperbolic reflectionmoveout in anisotropic media[J].Geophysics,1994,59(8):1290～1304.
[4]Alkhalifah T,Tsvankin L.Velocity analysis fortransversely isot repic media[J].Geophysics,1995,60(5):1550～1566.
[5]Siliqi R D,Le Meur,Gamar F,et al.High-densitymoveout parameter fields V andη-Partone one:Simulitanenous automatic picking[A].73rd SEG In-ternational Exposition&Annual Meeting[C].Dal-las,Texas:SEG,2003,2313～2316.
[6]徐翠娥,郝晓红,王影,高密度双谱分析法在各向异性介质速度分析中的初步应用[J].海洋石油,2008,28(1):1～5.
[7]万志超,滕吉文,张秉明.各向异性介质中地震波速度分析的研究现状[J].地球物理学进展,1997,12(3):35～44.
[8]铁迎春,罗玲,朱新宇,等.各向异性双谱速度分析方法及在泌阳地区的应用[J].石油地质与工程,2011,25(1):40～43.
[9]秦亚玲,王彦春,秦广胜,等.各向异性叠前时间偏移-以东濮凹陷为例.地球物理学进展,2010,25(3):926～931.
[10]卢明辉,唐建候,胡彬,等.VT I介质P波非双曲时差分析[J].地球物理学进展,2005,20(2):61～64.
[11]董春晖.共聚焦点叠前深度偏移速度估计方法研究[J].地球物理学进展,2008,23(6):1866～1871.
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