| 基于时频域Teager主能量的储层检测 |
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| 引用本文： | 陈学华,钟文丽,贺振华.基于时频域Teager主能量的储层检测[J].石油地球物理勘探,2011(3):434-437,500,328. |
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| 作者姓名： | 陈学华 钟文丽 贺振华 |
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| 作者单位： | 成都理工大学油气藏地质及开发工程国家重点实验室;成都理工大学地球物理学院;成都理工大学地球科学学院 |
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| 基金项目： | 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 |
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| 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。
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| 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 |
Reservoir characterization based on Teager dominant energy in time-frequency domain |
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| Chen Xue-hua,Zhong Wen-li,and He Zhen-hua.Reservoir characterization based on Teager dominant energy in time-frequency domain[J].Oil Geophysical Prospecting,2011(3):434-437,500,328. |
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| Authors: | Chen Xue-hua Zhong Wen-li and He Zhen-hua |
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| Affiliation: | 1.1.State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu,Sichuan 610059,Chinaa2.College of Geophysics,Chengdu University of Technology,Chengdu,Sichuan 610059,Chinaa3.College of Earth Sciences,Chengdu University of Technology,Chengdu,Sichuan 610059,China |
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| 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. |
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| Keywords: | time-frequency analysis Teager dominant energy reservoir detection spectral decomposition energy density generalized S-transform |
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