Seismic interpretation using seismic trace frequency attribute properties - a preliminary study

摘要

Time-frequency analysis (T-F) of the seismic reflection character of thin formations (Widess, 1973; Mahradi, 1983; Yang, 1988; Yin et al., 2003) is increasingly being applied to high-resolution seismic processing and interpretation, especially for sequence interpretation of complex continental facies. This includes identification and partitioning of multi-level sequences, micro-facies characterization of sedimentary layers and the cycle structure of thin sand-shale interbeds, and thickness prediction of thin reservoirs (Li, 1987; Jin, 1988; Mushen et al., 2000; Ling Yun, 2004), etc. Using different mathematical transforms e.g., Fourier transform, wavelet transform, Wigner-Vill transform, Gabor transform, etc, (Cohen, 1989; Williams er al., 1989; Boashash, 1991; Bahorich, 2002), the time-frequency analysis allows us to decompose and to depict in detail the local spectra of the input signals, so as to get an overall knowledge of their micro-structures by the relatively high resolution in the frequency domain.