地震信号时频谱分析技术在储层分析中的应用
摘要
地震信号是典型的非平稳信号,信号的功率谱密度是时变的,时频分析方法在非平稳信号分析方面,具有独特优势。本文应用目前常用的时频分析技术对XG油田井旁道进行分析比较,揭示了时频分辨率S变换与小波变换较好,频率衰减梯度属性对储层变化较为敏感,在此基础上应用时频分析技术对本区储层进行了分析与预测。
引文
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[2]Marfurt K J,Kirlin R L.Narrow-band spectral analysis and thinbed tuning[J].Geophysics,2001,66(4):1274-1283
[3]Burnett M D,Castagna J P,Me'ndez-herna'ndez E,et al.Application of spectral decomposition to gas basins in Mexico[J].The Leading Edge,2003,22(11):1130-1134
[4]Castagna J P,Sun Shengjie,Siegfried R W.Instantaneous spectral analysis:Detection of low-frequency shadows associated with hydrocarbons[J].The Leading Edge,2003,22(2):120-127
[5]R.G.Stockwell and L.Mansinha and R.P.Lowe.Localization of the Complex Spectrum:The S Transform,Journal of the Association of Exploration Geophysicists,1996,17(3):99-114
[6]陈雨红,杨长春,曹齐放.几种时频分析方法比较[J].地球物理学进展,2006,21(4):1180-1185
[7]高静怀.广义S变换与薄互层地震响应分析[J].地球物理学报,2003,46(4):527-532
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