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P-SV波的共转换点道集抽取 被引量:3

CCP GATHERING FOR P-SV CONVERTED WAVES
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摘要 P-SV转换波的叠加必须知道真正的共反射点。 这个共反射点就是所谓的P-SV波共转换点。由于P-SV转换波对线的不对称性,它的叠加比纵波的CDP叠加要难得多。如果我们已知介质中横波与纵波速度的比值、水平界面的埋藏深度和炮检距,炮点到共转换点的水平距离就可以通过解一个四次方程求出。本文将讨论如何确定P-SV转换波的转换点并分析P-SV波在地下界面的反射点和地面接收点的分布,从而提出动态抽取共转换点道集并实现CCP叠加的方法。 The stacking for P-SV Converted waves requires to determine the actual common reflecting points, namely Common Comversion Points (CCP). The CCP stacking for converted waves is much more complicated than the CDP stacking for P-waves due to the asymmetric ray paths. Given the velocity ratio of S-to P-waves, the depth of reflector and the offset, the horizontal distance between source and the converting point can be determined by solving a quartic equation. In this paper, we will show how the converting points for P-SV waves on subsurface interfaces and the distribution of the convening points/ receiving points on the surface are determined so as to appropriately categorize the data for CCP gathering. Also included in the paper there are some processing examples for synthetic data, through which the validity of the argument in the paper is demonstrated.
作者 张耀辉
出处 《石油物探》 EI CSCD 北大核心 1992年第3期87-101,共15页 Geophysical Prospecting For Petroleum
关键词 P-SV波 共转换点 道集 地震勘探 Common Convcrsion Point for P-SV Waves, CCP Gathering, Miltiple Component Seismic Survey
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同被引文献34

  • 1周竹生,王卫华.一种快速、高精度的共转换点轨迹计算方法[J].石油地球物理勘探,1993,28(1):37-45. 被引量:20
  • 2唐建侯,张金山.消除P-SV波大静校正量的方法[J].石油地球物理勘探,1994,29(5):650-653. 被引量:36
  • 3李录明,罗省贤.P-SV转换波速度分析及解释方法[J].石油地球物理勘探,1995,30(1):66-74. 被引量:45
  • 4徐仲达,孙波,唐宗璜.P-SV转换波反射系数与野外采集观测系统设计[J].石油物探,1996,35(1):1-12. 被引量:10
  • 5刘洋 魏修成.转换波三参数速度分析[A]..中国地球物理学会年刊[C].北京:地震出版社,2002.20~20.
  • 6刘洋 魏修成.高精度转换波资料处理方法研究[A]..中国地球物理学会年刊[C].合肥:安徽科学技术出版社,1999.20~20.
  • 7Li Y P. A new method for converted wave statics correction[J]. Expanded Abstracts of 72^th Annual International SEG Mtg, 2002,979 - 981.
  • 8Zhang Y. Nonhyperbolic converted wave velocity analysis and normal moveout[J]. Expanded Abstracts of 66^th Annual International SEG Mtg, 1996.1 555-1 558.
  • 9Tessmer G, Behle A. Common reflection point datastacking technique for converted waves[J]. Geophysical Prospecting. 1998, 36(7):671-688.
  • 10Thosmen L. Converted-wave reflection seismology over inhomogeneous anisotropic media [J]. Geophysics,1999,5-1(3): 678-690.

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