Logging Sequence Stratigraphic Division Based on Wavelet Time-Frequency Analysis
Ganghua Chen, Yu Jie, Zhang Xiao-zhen · Xinjiang shiyou dizhi · 2007
This paper introduces the basic principle and procedure of wavelet time-frequence analysis and discusses the geologic basis of sequence stratigraphic division with wavelet analysis. By analyzing the ideal model of sequence stratigraphy, the characteristics of sequence interface on the time-frequency energy chart and wavelet coefficient plot are summarized. Besides, with the wavelet transform of logging signals and selected proper scale, the sequences of different levels are classified, which provides a quantitative division method for sequence stratigraphic analysis, especially for high-resolution sequence stratigraphic analysis.