新疆石油地质

新疆石油地质 ›› 2004, Vol. 25 ›› Issue (5): 529-531.

• 应用技术 • 上一篇    下一篇

提高测井曲线纵向分辨率的小波变换技术

冯国庆1, 杨琨2, 陈忠强3, 沈勇伟4   

  1. 1.西南石油学院石油工程学院 四川 成都 610500;
    2.中国石油新疆油田分公司勘探开发研究院 新疆 克拉玛依 834000;
    3.中国石油新疆石油管理局测井公司新疆 克拉玛依 834000;
    4.中国石油新疆油田分公司采油二厂新疆 克拉玛依 834000
  • 收稿日期:2004-01-08 发布日期:2021-01-13
  • 作者简介:冯国庆(1974-),男,山东荷泽人,博士,油气田开发。联系电话:028-83032581

Wavelet Transformation Technique for Improving Vertical Resolution in Well Logging Curves

FENG Guo-qing1, YANG Kun2, CHEN Zhong-qiang3, SHEN Yong-wei4   

  1. 1. Institute of Petroleum Engineering, Southwest Petroleum Institute, Chengdu, Sichuan 6 10500, China;
    2. Research Institute of Explorationand Development, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China;
    3. Well Logging Co., Xinjiang PetroleumAdministration Bureau, PetroChina, Karamay, Xinjiang 834000, China;
    4. No.2 Production Plant, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China
  • Received:2004-01-08 Published:2021-01-13

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摘要： 小波变换是-种能同时在时间域和频率域内进行局部化信号分析的新方法,且时间域分辨率可随尺度因子的增大而提高,其主要优点在于它在时间域和频率域都有良好的局部化性质,可以聚集到信号的任意细节。利用该特点采用Mallat方法可对测井曲线进行分解和重构,重构后的测井曲线可以提高纵向分辨率。该方法与反褶积方法比较,小波变换后的测井曲线更能反应细节信息,具有更高的纵向分辨率。

关键词: 小波变换, 测井曲线, 分解, 重构, 纵向分辨率

Abstract: Wavelet transformation is a new method that can make local signal analysis both in time and frequency domains, where the time domain resolution could change and increase with scale factor. The method is characterized by good localized time and frequency domain that could converge signals at any detail. By means of Mallat arithmetic, the method can be used to decompose and reconstruct well log curves, and improve the vertical resolution. Compared w ith deconvolution method, the well log curves transformed by wavelet analysis contain more detailed information and reach higher vertical resolution.

Key words: wavelet transformation, well log curve, decomposition, reconstruction, vertical resolution

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