Online published: 2011-04-20
Seismic data contain abundant information on underground sedimentary body. Using wavelet transform timefrequency analysis can allowone-dimensional time domain signal expand to two-dimensional seismic wave time-frequency domain, and then the spectrumcan more clearly depict the sedimentary cycle structure of the internal body. Through the establishment of different types of sedimentary models, the change lawof the sedimentary body corresponding to seismic signal in the time-frequency map in progradation, aggradation and retrogradation sedimentary environment is analyzed. The actual data show that the energy group moving direction in the time-frequency map is consistent with petrophysics variation. This method provides a newway of thinking and approach in studying sedimentary cycle in non-drilling area.
WANG Zhiping , Qin Qirong , SU Peidong , FAN Xiaoli . Using time-frequency characteristics to analyze sedimentary cycle[J]. Lithologic Reservoirs, 2011 , 23(2) : 95 -99 . DOI: 10.3969/j.issn.1673-8926.2011.02.018
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