石油学报 ›› 2009, Vol. 30 ›› Issue (1): 75-79.DOI: 10.7623/syxb200901015

• 地质勘探 • 上一篇    下一篇

生物礁地震响应特征的数值模拟

熊晓军, 贺振华, 黄德济   

  1. 成都理工大学信息工程学院, 四川成都, 610059
  • 收稿日期:2008-01-23 修回日期:2008-03-31 出版日期:2008-11-25 发布日期:2010-05-21
  • 作者简介:熊晓军,男,1980年12月生,2007年获成都理工大学博士学位,现为成都理工大学讲师,主要从事地震正、反演方法研究.E-mail:xiongxiaojun07@cdut.cn
  • 基金资助:

    国家自然科学基金项目(No.40774064)资助

Numerical simulation on seismic response features of reef

XIONG Xiaojun, HE Zhenhua, HUANG Deji   

  1. College of Information Engineering, Chengdu University of Technology, Chengdu 610059, China
  • Received:2008-01-23 Revised:2008-03-31 Online:2008-11-25 Published:2010-05-21

摘要:

为了有效地识别生物礁的地震响应特征,采用频率—波数域的波动方程数值模拟方法,对时间剖面上生物礁的各种典型特征进行了数值模拟,提出了将地震正演与深度偏移相结合的地震数值模拟流程,有效地检验了生物礁解释成果的正确性。在二维模拟的基础上,采用三维波动方程延拓方法实现了三维环礁模型的地震数值模拟,得到了时间剖面上环礁的各种地震反射特征。理论和实际生物礁的模拟记录仅包含地震波的反射和绕射特征,信噪比高,有助于消除实际生物礁地震解释的多解性。

关键词: 生物礁, 地震响应, 波动方程, 波场延拓, 数值模拟, 地震反射特征

Abstract:

Many features of reef in seismic time profile were numerically simulated by the way of F-K wave equation modeling to effectively recognize seismic response features of reef. A calculation program by combining seismic forward with depth migration was proposed to test the explanation for reef. Based on the 2-D seismic modeling, the continuation method of 3-D wave equation was applied to realize poststack forward modeling of 3-D atoll model. Many representative response features in different seismic profiles were obtained. The simulated synthetic records only contain the primary reflections and diffractions with high signal-to-noise ratio, which is available for eliminating the multiplicity of reef seismic interpretation.

Key words: reef, seismic response, wave equation, wave-field continuation, numerical simulation, seismic reflection features

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