| 一种基于小波变换的测井曲线去噪新方法 |
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| 引用本文： | 邹长春, 杨欣德, 潘令枝, 朱继永, 李彦华. 一种基于小波变换的测井曲线去噪新方法[J]. 物探与化探, 1999, (6): 462-466. doi: 10.3969/j.issn.1000-8918.1999.06.011 |
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| 作者姓名： | 邹长春 杨欣德 潘令枝 朱继永 李彦华 |
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| 作者单位： | 中国地质大学,北京,100083;; 中国地质大学,北京,100083;; 大港油田集团公司测井公司,天津,300280;; 中国地质大学,北京,100083;; 大港油田集团公司测井公司,天津,300280 |
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| 摘 要： | 从小波变换的思想出发,提出一种测井曲线去噪新方法.首先按照Mallat塔式算法对测井曲线进行小波分解,然后应用一个非线性软门限函数在小波域内将噪声抑制与滤除,最后通过小波变换得到重构的测井曲线.结果表明,该方法较传统滤波方法更为有效.
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| 关 键 词： | 测井曲线 去噪 小波变换 数据处理 |
| 收稿时间： | 1999-05-17 |
A NEW TECHNIQUE FOR DENOISING LOG CURVE ON THE BASIS OF WAVELET TRANSFORM |
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| Zou Changchun, Yang Xinde, Pan Lingzhi, Zhu Jiyong, Li Yanhua. A NEW TECHNIQUE FOR DENOISING LOG CURVE ON THE BASIS OF WAVELET TRANSFORM[J]. Geophysical and Geochemical Exploration, 1999, (6): 462-466. doi: 10.3969/j.issn.1000-8918.1999.06.011 |
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| Authors: | Zou Changchun Yang Xinde Pan Lingzhi Zhu Jiyong Li Yanhua |
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| Affiliation: | 1. China University of Geosciences, Beijing 100083;
2. Logging Corporation, Dagang Oilfield Group, Tianjin 300280 |
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| Abstract: | Based on the idea of wavelet transform,this paper puts forward a new technique for denoising log curve.First,wavelet decomposition of log curve is carried out in accordance with Mallat tower algorithm,then a nonlinear soft threshold is used to restrain and leach noise in the wavelet field,and finally the reconstructed log curve is obtained through wavelet reverse transform.The result shows that the technique is more effective than the traditional filtering method. |
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| Keywords: | log curve denoising wavelet transform data processing |
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