| 小波变换在裂缝识别和裂缝密度评价中的研究(英文) |
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| 引用本文： | 张晓峰,潘保芝,王飞,韩雪.小波变换在裂缝识别和裂缝密度评价中的研究(英文)[J].应用地球物理,2011,8(2):164-169. |
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| 作者姓名： | 张晓峰 潘保芝 王飞 韩雪 |
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| 作者单位： | 吉林大学地球探测科学与技术学院; |
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| 基金项目： | sponsored by National Science and Technology Major Project of China (No. 2008 ZX 05009-001) |
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| 摘 要： | 通过常规测井曲线小波变换来评价裂缝参数是一个较新的研究课题。本文针对火山岩裂缝储层,对常规测井曲线做coif5、bior4.4和db5基小波的小波变换,通过变换后的分解信号与成像测井裂缝密度的对比研究,寻找出与裂缝密度相匹配的基小波,再将常规测井曲线在这个基小波下的分解信号与曲线变化率法相结合建立裂缝指示曲线来识别裂缝发育段,最后通过裂缝指示曲线与成像测井的裂缝密度之间的量化关系来比较准确的评价裂缝密度。将裂缝指示曲线法在松辽盆地南部进行了应用,通过裂缝指示曲线求取的裂缝密度与成像测井的裂缝密度之间的相对误差为0.53。
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| 关 键 词： | 小波变换 裂缝识别 曲线变化率 裂缝密度 |
| 收稿时间： | 20 January 2011 |
A study of wavelet transforms applied for fracture identification and fracture density evaluation |
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| Xiao-Feng Zhang,Bao-Zhi Pan,Fei Wang,Xue Han.A study of wavelet transforms applied for fracture identification and fracture density evaluation[J].Applied Geophysics,2011,8(2):164-169. |
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| Authors: | Xiao-Feng Zhang Bao-Zhi Pan Fei Wang Xue Han |
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| Institution: | Zhang Xiao-Feng1,Pan Bao-Zhi1,Wang Fei1,and Han Xue11.College of GeoExplaration Science and Technology,Jilin University,Changchun 130026,China. |
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| Abstract: | Combining wavelet transforms with conventional log differential curves is used to identify fractured sections is a new idea.In this paper,we first compute the mother wavelet transform of conventional logs and the wavelet decomposed signals are compared with fractures identified from image logs to determine the fracture-matched mother wavelet.Then the mother wavelet-based decomposed signal combined with the differential curves of conventional well logs create a fracture indicator curve,identifying the fractu... |
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| Keywords: | Wavelet transform fracture identification differential curves fracture density |
| 本文献已被 CNKI SpringerLink 等数据库收录！ |
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