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用SYC-Ⅱ声波仪开展全波列测井的研究是一项新的偿试。利用国产价廉实用的SYC-Ⅱ岩石参数测定仪作为声测井的发射和接收装置,并配备自行研制的由采集器和IBM便携式微机组成的数据采集装置,实现了井场的声波全波列波形的数据采集。文中介绍了用互频谱相位法和解析法从声波全波列波形中提取纵、横波速度的数据处理方法和原理,并给出了全波列测井在三峡坝址的应用实例。最后对二种处理方法可能产生的误差进行了讨论。
SYC-II sonic wave instrumentation for full wave logging is a new test. The domestically-available and inexpensive SYC-II rock parameter tester was used as the launching and receiving device for acoustic logging, and a self-developed data acquisition device consisting of a collector and an IBM portable microcomputer was used to realize the sound wave full-wave column at the wellsite. Waveform data acquisition. In this paper, the data processing method and principle of extracting the longitudinal and transverse wave velocity from the waveforms of full-wave acoustic waveforms using the mutual spectral phase method and analytical method are introduced. The application examples of full-wave column logging at the Three Gorges dam site are given. Finally, the possible errors of the two methods are discussed.