| 基于小波熵水淹层识别方法探索 |
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| 引用本文： | 王任一,刘日强.基于小波熵水淹层识别方法探索[J].地球物理学进展,2007,22(5):1558-1561. |
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| 作者姓名： | 王任一 刘日强 |
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| 作者单位： | 1. 中国地质大学(武汉),武汉,430074;中海油湛江分公司勘探开发部,湛江,524057
2. 吐哈油田,哈密,839009 |
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| 基金项目： | 中石油吐哈油田公司重大科技攻关项目(编号THKJ2004-06)资助 |
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| 摘 要： | 储层的孔隙度和电阻率曲线间微差形态波形的复杂程度隐含着储层含油气性的信息,油层水淹程度不同,其时频平面上小波系数能量团存在着显著差异,随水淹程度加重,其能量团分布由复杂逐渐趋于简单单调.油层水淹信息映射在其小波系数能量熵特征上,可使油层水淹信息得到放大,更易于水淹程度识别.基于测井信息的小波熵识别水淹层的方法,对利用传统测井解释理论判别比较困难的低阻油层有较强的识别能力.
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| 关 键 词： | 水淹层 连续小波变换 小波熵 低阻油层 |
| 文章编号： | 1004-2903（2007）05-1558-04 |
| 收稿时间： | 2006-11-01 |
| 修稿时间： | 2007-05-29 |
The identification method of the water flooded layer based on the wavelet entropy |
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| WANG Ren-yi,LIU Yue-qiang.The identification method of the water flooded layer based on the wavelet entropy[J].Progress in Geophysics,2007,22(5):1558-1561. |
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| Authors: | WANG Ren-yi LIU Yue-qiang |
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| Abstract: | The information of petroliferous reservoir is hided in the level of differential waveform complexity between the resistivity and porosity log curves of reservoirs.The wavelet coefficient energy group of time-frequency surface has distinct difference for different swept extent.Along with water flooded extent increase,the energy group distribution gradually tends to be simple.The signal of water flooded reservoir reflects in the energy entropy of wavelet coefficient,which enlarges the information of water flooded reservoir and makes identifying the swept layer easy.The conventional log explanation theory badly identifies the low resistivity oil layer,which is well identified by the identification method of swept layer based on the wavelet entropy of log signal. |
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| Keywords: | the water flooded layer continuous wavelet transform wavelet entropy low resistivity oil layer |
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