新疆石油地质

新疆石油地质 ›› 2009, Vol. 30 ›› Issue (5): 629-632.

• 应用技术 • 上一篇    下一篇

广义 S 变换及其在储集层频谱成像中的应用

刘兰锋1, 曹思远1, 夏竹2, 熊伟2   

  1. 1.中国石油大学 资源与信息学院,北京 102249;
    2.中国石油 东方地球物理公司 物探技术研究中心,河北 涿州 072751
  • 收稿日期:2008-10-23 修回日期:2009-02-23 出版日期:2009-10-01 发布日期:2020-09-30
  • 作者简介:刘兰锋（1979-）,男,山东成武人,在读博士研究生,地球物理勘探, （Tel）13552891196（E-mail）sunboy_llf@163.com.

Generalized S-Transform and Its Application to Reservoir Imaging by Energy Spectrum

LIU Lan-feng1, CAO Si-yuan1, XIA Zhu2, XIONG Wei2   

  1. 1.Faculty of Natural Resource and Information Technology, China University of Petroleum, Beijing 102249, China;
    2.Geophysical Technique Research Center, BGP, CNPC, Zhuozhou, Hebei 072751, China
  • Received:2008-10-23 Revised:2009-02-23 Online:2009-10-01 Published:2020-09-30

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摘要： 将从地震资料中提取的地震子波代替 S 变换中的基本小波,实现了应用在地震资料中的广义 S 变换。通过对理论薄层模型的试验得出,基于广义 S 变换的频谱可将大于 λ/8 的薄层检测出来,证明了广义 S 变换具有高定位的时频谱,而且广义 S 变换具有自适应时频窗,输入长度不受时窗的限制等优点,克服了离散傅立叶变换时窗的局限性,因此在傅氏变换频谱分解的基础上实现了基于广义 S 变换的储集层频谱成像技术,并与傅氏变换频谱分解结果作了对比,取得了良好的效果,成功地应用在了印尼、塔里木、准噶尔等多个地区。

关键词: S 变换, 广义 S 变换, 频谱分解, 储集层成像

Abstract: The generalized S-transform (GST) applied to seismic data interpretation is achieved by means of replacing the basic wavelet in S-transform (ST) by the seismic wavelet extracted from seismic data. It is shown from the test of thin layer model that the thin layer greater than λ/8 can be detected by GST with the super time-frequency localization spectrum of ST. Moreover, the self-adapted time- frequency window of GST and the arbitrary input data length allow to deal with the limitations of discrete Fourier transform time window, and the reservoir imaging by energy spectrum can be realized based on the spectrum decomposition theory of Fourier transformation with good results by comparison between the two. This method has been applied to many areas such as Tarim, Junggar and Indonesia, successfully.

Key words: S-transform, generalized ST, spectrum decomposition, reservoir imaging

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