基于Hilbert-Huang变换的测井曲线自动分层方法

发布时间：2018-06-24 05:54

本文选题：自动分层 + HHT　；参考：《地质科技情报》2017年02期

【摘要】：利用Hilbert-Huang变换方法得到测井曲线各个固有模态函数的瞬时频率,将测井曲线的瞬时频率变化剧烈的点作为层界面位置,从而实现测井曲线自动分层。首先构建并分析了一个理想信号,证实了Hilbert-Huang变换作为分层方法的有效性和优越性,然后将这种方法应用到实际的测井资料中进行自动分层,并给出了根据Hilbert-Huang变换进行测井曲线自动分层的具体步骤,对比了不同参数和方法下的分层结果。分层结果显示,一般前三个分量的分层结果与实际结果符合较好。将HilbertHuang变换的分层结果与其他方法分层结果相比较发现,该方法不需设定过多的分层参数就可以准确地识别层界面,分层点具有明确的物理意义,而且得到的是不同尺度的分层结果,相比于传统分层方法更加准确和高效。
[Abstract]:The Hilbert-Huang transformation method is used to obtain the instantaneous frequency of each inherent modal function of the log curve, and the sharp change point of the instantaneous frequency of the log curve is used as the layer interface position, thus the log curve is automatically stratified. First, an ideal signal is constructed and analyzed, and the validity of the Hilbert-Huang transformation as a stratified method is proved. And superiority, then this method is applied to the actual logging data to be stratified automatically, and the concrete steps of automatic logging curve stratification based on Hilbert-Huang transform are given, and the stratification results under different parameters and methods are compared. The stratification results show that the stratification results of the first three components are in accordance with the actual results. The hierarchical results of HilbertHuang transformation are compared with the results of other methods. It is found that this method can accurately identify the layer interface without too many layered parameters. The stratified points have clear physical meaning, and the hierarchical results of different scales are obtained, and the phase is more accurate and efficient than the traditional hierarchical method.
【作者单位】：中国地质大学(武汉)地球物理与空间信息学院;
【基金】：国家高技术研究发展计划(“863”计划)项目(2014AA06A608)
【分类号】：P631.81

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