Methods of calculating coherence cube on the basis of wavelet transform
X-W Wang, KQ Yang, LH Zhou, Jingting Wang, H Liu, YM Li · Lanzhou University Institutional Repository · 2002
Two methods of calculating coherence cube are put forward in frequency division on the basis of wavelet transform, and methods of M. Bahorich and K. J. Marfurt. The first method is for calculating coherence cube by using instantaneous phase of wavelet transform of wavelet functions (or derivative wavelet functions) simulating seismic wavelet; The second method is for calculating coherence cube by using the real and imaginary pails of wavelet transform above-mentioned wavelet functions. In order to identify characteristics of small faults under in oilfield structure, the coherence cube is reconstructed by calculating coherence cube in frequency division. The first method is testified to be more efficient than the second in terms of the application of oilfield.