新疆石油地质

新疆石油地质 ›› 2007, Vol. 28 ›› Issue (3): 363-365.

• 应用技术 • 上一篇    下一篇

双曲Radon变换法多次波衰减

王维红1,2, 崔宝文1   

  1. 1.中国石油 大庆油田有限责任公司 勘探开发研究院, 黑龙江 大庆 163712;
    2.中国科学院 地质与地球物理研究所, 北京 100029
  • 收稿日期:2006-07-11 修回日期:2006-12-13 出版日期:2007-06-01 发布日期:2020-07-31
  • 作者简介:王维红(1975-), 男, 山东巨野人, 博士, 地球物理,(Tel) 13069616512(E-mail) wangweihongdpri@petrochina.com.cn.
  • 基金资助:
    中国博士后科学基金(20060400229)资助

Multiple Attenuation by Hyperbolic Radon Transform

WANG Wei-hong1,2, CUI Bao-wen1   

  1. 1. Research Institute of Exploration and Development, Daqing Oilfield Company Ltd., PetroChina, Daqing, Heilongjiang 163712, China;
    2. Institute of Geology and Geophysics, CAS, Beijing 100029, China
  • Received:2006-07-11 Revised:2006-12-13 Online:2007-06-01 Published:2020-07-31

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摘要： 多次波是相干干扰,在地球物理勘探中普遍存在。作部分动校正后的共中心点道集,多次波剩余时差更接近于双曲线。研究给出时不变双曲Radon变换空间频率域衰减多次波的基本原理,同时给出了计算公式和离散采样算法。时不变双曲Radon变换在频率域是解耦的,所以该方法在计算效率上和抛物Radon变换一样,但是在分离多次波上比抛物Radon变换法更精确。水平层状介质的多次波衰减结果表明,时不变双曲Radon变换法在叠前能有效地衰减多次波,复杂SMAART模型的叠前多次波衰减实例显示了该算法的有效性和实用性。

关键词: 多次反射, 衰减, 变换, 模型, 算法

Abstract: Multiple is a coherent noise and exists in most seismic data. The residual moveout of multiples of common midpoint (CMP) following partial dynamic correction is more close to hyperbola. This paper presents the principle of multiple attenuation by time invariant hyperbolic Radon transform (TIHRT) in frequency-space domain and the TIHRT formula and the discrete sampling algorithm. The TIHRT approach is equivalent to parabolic Radon transform (PRT) in terms of computational efficiency because of the decoupling for any temporal frequency, but it is more accurate in separating multiples from primary sections than PRT. The multiple attenuation of horizontal layer media shows that TIPRT approach can attenuate multiples effectively in prestack of seismic data. The multiple attenuation of complex SMAART model indicates the validity and practicability of TIHRT approach.

Key words: multiple reflection, attenuation, transform, model, algorithm

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