| 二维小波变换在成像测井识别裂缝中的应用研究 |
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| 引用本文： | 张晓峰,潘保芝.二维小波变换在成像测井识别裂缝中的应用研究[J].石油地球物理勘探,2012(1):173-176,188,201. |
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| 作者姓名： | 张晓峰 潘保芝 |
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| 作者单位： | 东华理工大学放射性地质与勘探技术国防重点学科实验室;吉林大学地球探测科学与技术学院 |
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| 基金项目： | 国家重大科技专项大型油气田及煤层气开发专题“复杂含油气盆地构造及其控油气作用”(2008ZX05009-001) |
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| 摘 要： | 本文首先对电成像测井资料进行水平方向和垂直方向的电导率曲线的小波变换,然后在小波变换后的高频段寻找与裂缝对应的分解信号,再将水平方向和垂直方向的分解信号进行绝对值叠加,再转换成二值信号(即裂缝为1,非裂缝为0)成图,从而增强成像测井中的裂缝信息,为成像测井的人机交互解释中的裂缝识别提供依据。实际应用结果表明,该方法可以准确、直观地显示出裂缝,效果很好。
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| 关 键 词： | 二维小波变换 成像测井 裂缝型储层 电导率 |
Two-dimensional wavelet transform to identify fractures in imaging logging |
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| Zhang Xiaofeng,and Pan Baozhi.Two-dimensional wavelet transform to identify fractures in imaging logging[J].Oil Geophysical Prospecting,2012(1):173-176,188,201. |
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| Authors: | Zhang Xiaofeng and Pan Baozhi |
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| Affiliation: | 1.Key Laboratory of Radioactive Geology and Exploration Technology Fundamental Science for National Defense,East China Institute of Technology,Fuzhou,Jiangxi 344000,China 2.College of Geo-exploration Science and Technology,Jilin University,Changchun,Jilin 130026,China |
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| Abstract: | Imaging logging usually gives an accurate intuitive response of fractures.This paper discusses two-dimensional wavelet transform for conductivity curve of imaging logging.The conductivity curve of imaging logging is decomposed by wavelet transform,and the relationship between decomposed signals and fracture are found out.The absolute values of the decomposed horizontal and vertical signals are added and then they are re-mapped to binary(fracture is 1,and no fracture is 0) in order to enhance fracture identification in imaging logging,and provide the basis for fracture identification in the interactive interpretation.Real data examples show that this approach is rather effective. |
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| Keywords: | two-dimensional wavelet transform imaging logging fractured reservoir conductivity |
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