摘要
沈建国等．长源距声波测井小波处理系统．测井技术，１９９５，１９（６）：４３９～４４６根据小波分析理论，利用小波变换、小波多分辨分析等方法分解长源距声波测井波形，给出了不同频率段、不同时刻的波形分解结果。这样可以对波形的局部特征进行分析，研究长源距声波波形中的各导波特征。根据ＭＡＬＬＡＴ算法的特点和国内长源距声波测井处理系统的现状，开发设计了长源距声波测井小波处理系统，在ＰＥ－３２８４计算机上利用该系统处理了江汉油田２０多口井的长源距声波测井资料，基本上能分辨套管井、裸眼井长源距声波测井波形中的各种导波。给出的部分处理结果综合图表明处理结果良好，为解释人员评价因井质量和地层特征提供了一种新方法。
According to the wavelet analysis theory, the long spacing sonic logging waveforms can be separated with wavelet transformation and wavelet multi-resolution analysis etc. Such wavelet separation results as different frequency range and different time are given. Thus, partial waveform characteristics can be analysed and various guidedwave characteristics of long spacing sonic waveforms can be studied.On the basis of the features of MALLAT arithmetic and the present status of chinese long spacing sonic logging process system, a new process system for long spacing sonic logging wavelets is developed. Long spacing sonic logging data from more than 20 wells have been processed utilizing the system on PE-3284 computer. The processing results show that various guided waves of long spacing sonic long waveforms for both cased holes and open holes can be identified. This new approach can be used to evaluate the cement bond quality and formation properties.
出处
《测井技术》
CAS
CSCD
1995年第6期439-446,462,共9页
Well Logging Technology
关键词
长源距
声波测井
小波变换
小波处理
测井
log spacing sonic log wavelet transform wavelet processing guidedwave signal
