频谱法时差提取在声波全波形处理中的应用

在很多情况下，声波全波列测井所得的波形在时间和频率上都有重叠现象，这样在利用常规的滤波和时差分离方法处理时会遇到很大困难。但将基于Prony理论的频谱法时差提取应用于声波全波波形处理，可得到精确的各组分波时差值。本文研究讨论了Prony方法理论基础和频谱法预测理论，并进行了实际资料的处理。评价结果显示，在声波全渡波形处理中应用频谱法时差提取是可靠的。

APPLICATION OF SLOWNESS GAINED BY USING SPECTRAL METHOD IN ACOUSTIC FULL WAVEFORM PROCESSING

In many conditions, there are some arrival time and frequency overlap phenomena in waveforms gained by using acoustic full waveform logs, so it is very difficult to process waveforms with conventional methods such as wave filtering and arrival time separating. However, we can determine the accurate slowness of all the wave components by using spectral method based on the Prony theory. In this paper, after studying and discussing Prony theory and predicated theory of frequent spectral method, we processed some oil field data. Evaluation results show that the slowness gained by using spectral method in acoustic full waveform processing is reliable.