改进的小波阈值法在测井曲线去噪中的应用

摘要

介绍了基于小波阈值法的测井曲线滤波原理，分析了现有小波阈值函数和阈值特点，提出了一种改进的小波阈值去噪法。通过 Heavisine 信号的仿真实验以及测井曲线实例表明，改进的小波阈值法在有效滤除测井信号中的噪声的同时又可以保留曲线的细节信息，在测井曲线去噪处理中得到很好的应用。%The paper introduces the logging curves filtering principle based on wavelet thresholding method ,anlyses the thresholds and wavelet thresholding functions characteristics, then an improved wavelet threshold denoising method is proposed. The simulation experiment of Heavisine signal and logging curves example results show that, the improved wavelet thresholding method can preserve curves datails well while reducing noise efficiently and it can get good application in logging curves denoise processing.