基于时频域Teager主能量的储层检测  

Reservoir characterization based on Teager dominant energy in time-frequency domain

作　　者：陈学华[1,2] 钟文丽[3] 贺振华[1] 

机构地区：[1]成都理工大学油气藏地质及开发工程国家重点实验室,四川成都610059 [2]成都理工大学地球物理学院,四川成都610059 [3]成都理工大学地球科学学院,四川成都610059

出　　处：《石油地球物理勘探》2011年第3期434-437,500+328,共4页Oil Geophysical Prospecting

基　　金：国家自然科学基金项目(41004054);高等学校博士学科点专项科研基金项目(20105122120002);四川省教育厅自然科学重点项目(092A011)联合资助

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。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.

关 键 词：时频分析 Teager主能量 储层检测 谱分解 能量密度 广义S变换 

分 类 号：P631[天文地球—地质矿产勘探]