| 基于EMD与关联维的储层识别(英文) |
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| 引用本文： | 文晓涛,贺振华,黄德济.基于EMD与关联维的储层识别(英文)[J].应用地球物理,2009,6(1):70-76. |
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| 作者姓名： | 文晓涛 贺振华 黄德济 |
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| 作者单位： | [1]成都理工大学信息工程学院,成都610059 [2]成都理工大学沉积地质研究院,成都610059 |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划) |
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| 摘 要： | 在储层发育带，通常地震波波形会变复杂，所以关联维会变小。但由于地震波是有一定带宽的信号，波形受这个带宽内所有频率成分的影响，如果直接进行关联维的计算，其结果往往不能很好地反映储层。鉴于这种情况，提出了经验模态分解（EMD）与关联维相结合的方法，利用EMD对地震波进行分解，对分解后的每一个平稳的固有模函数（Intrinsic ModeFunction，IMF）分量进行关联维计算，将计算结果与有效的IMF分量进行储层预测。利用该方法对xx区三叠系中油组进行了试算，取得了较好的效果。
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| 关 键 词： | 经验模态分解 关联维 固有模函数 储集层 |
Reservoir detection based on EMD and correlation dimension |
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| Xiaotao Wen,Zhenhua He,Deji Huang.Reservoir detection based on EMD and correlation dimension[J].Applied Geophysics,2009,6(1):70-76. |
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| Authors: | Xiaotao Wen Zhenhua He Deji Huang |
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| Institution: | (1) State Key Lab. of Oil & Gas Reservoir Geology & Exploration, Chengdu University of Technology, Chengdu, 610059, China;(2) Sedimentary Geology Institute, Chengdu University of Technology, Chengdu, Sichuan, 610059, China |
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| Abstract: | In hydrocarbon reservoirs, seismic waveforms become complex and the correlation dimension becomes smaller. Seismic waves are signals with a definite frequency bandwidth and the waveform is affected by all the frequency components in the band. The results will not define the reservoir well if we calculate correlation dimension directly. In this paper,we present a method that integrates empirical mode decomposition (EMD) and correlation dimension. EMD is used to decompose the seismic waves and calculate the correlation dimension of every intrinsic mode function (IMF) component of the decomposed wave.Comparing the results with reservoirs identified by known wells, the most effective IMF is chosen and used to predict the reservoir. The method is applied in the Triassic Zhongyou group in the XX area of the Tahe oil field with quite good results. |
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| Keywords: | empirical mode decomposition correlation dimension intrinsic mode function reservoir |
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