Reservoir characterization based on Teager dominant energy in time-frequency domain
CHEN Xue-hua1,2, ZHONG Wen-li3, HE Zhen-hua1
1 State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu,Sichuan 610059,China;
2 College of Geophysics,Chengdu University of Technology,Chengdu,Sichuan 610059,China;
3 College of Earth Sciences,Chengdu University of Technology,Chengdu,Sichuan 610059,China
Abstract：Reservoir causes energy density anomalies of seismic signal which could be utilized to detect reservoirs.Teager energy in time-frequency domain is derived from generalized S-transform in this paper.Furthermore,an instantaneous Teager dominant energy(ITDE) is proposed,which delineates the major features of seismic energy density.Analysis of real seismic traces shows that Teager energy distribution in time-frequency domain possesses higher time-frequency localization and temporal resolution.3D seismic data demonstrates that ITDE can depict reservoir location,and characterize the spatial distribution and internal heterogeneity of reservoirs.ITDE can be used as a new instantaneous spectral attribute in reservoir characterization.
