摘要
基于非平稳信号时频分析方法研究的认识和实践,综述了地震时频分析属性在地层层序分析和地震储层研究中的应用。在对地震属性的一般性和方法阐述的基础上,讨论了利用地震方法研究沉积问题的基本观点和技术,指出频谱分解和分频解释是地震层序分析和储层研究的核心和关键技术。给出了地震层序分析和地震旋回分析的时频分析方法和实例,以及地震储层研究中的频谱分解和分频属性提取的方法和应用效果示例。研究和分析表明:分频解释可以在不同的频带上显示不同级别的地质现象,是地震资料研究沉积环境和储层的有效手段;时频分析是实现地震分频解释的重要手段。提高时频分析方法的精度和分辨率以及在各种实际地质情况下进行实践,将会不断促进方法研究和实际应用效果改善。
Based on the practices and knowledge of non-stationary signal processing, seismic time-frequency attributes and their applications in seismic texture sequence analysis and reservoir research were reviewed. Starting from a general discussion of seismic attribute and its methods, the author reviewed the basic viewpoints and techniques of seismic-sedimentology. It is pointed out that spectral decomposition and frequency division interpretation are the key and core methods for seismic sequence analysis and reservoir research. Examples of applications of time-frequency schemes in seismic sequence analysis, seismic cycling analysis, and reservoir research were presented. It could be concluded that spectral decomposition can reveal geological structures of different size. It is an effective tool for depositional environment and reservoir study. The effectiveness of time-frequency methods will continue to be improved by the efforts to improve the accuracy and resolution of time-frequency analysis methods and the applications under various geological conditions.
出处
《勘探地球物理进展》
2009年第1期18-22,共5页
Progress in Exploration Geophysics
关键词
地震层序
储层研究
时频分析
分频解释
时频属性
seismic sequence
reservoir research
time-frequency analysis
interpretation on frequency-division section
time-frequency attribute
