【摘要】 油气储层可引起地震信号的能量密度产生异常,因而可利用这种异常进行储层检测。本文在广义S变换的基础上,推导出了一种时频域Teager能量,并定义了反映地震信号能量密度主要信息的瞬时Teager主能量属性。经实际地震信号的分析,发现时频域Teager能量分布具有更高的时频聚集性和时间分辨率。三维地震资料的处理结果表明,瞬时Teager主能量可有效地反映油气储层的位置,准确刻画储层的空间展布及内部的非均质性,可作为分析储层的一种新的瞬时谱属性。更多还原

【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.更多还原