摘要
提出一种基于对波形包络信号进行统计分析的初至波检测新方法．该方法利用信号道大、小时窗内波形包络能量的比值变化来检测初至信号．实际资料试处理结果表明，对多层套管井全波资料和裂缝地层环行声波资料进行处理时，取０．２～０．４倍脉冲极值作为门槛值可检测到各种弱初至波。
new method of first arrival picking is proposed on the basis of the amplitude envelope for full sonic waveform. The method uses the changes of energy ratio between the long window and the short window to pick first arrivals. For the multilayer cased borehole and the circumferential sonic waveform in fractured formations. the results processed show that this method is very efficient for picking weak first arrivis.
出处
《石油天然气学报》
CAS
CSCD
北大核心
1994年第S1期23-25,共3页
Journal of Oil and Gas Technology
关键词
声波测井
首波
波形
希尔伯特变换
脉冲
振幅包络
sonic logging
head wave
waveform
Hilbert transformation
pulse
amplitude envelope
