Abstract
Based on an acoustic logging transmission network and the engineering pattern of a sliding wave in acoustic logging, analysis and calculations have been performed in a study of the effects of the electric-acoustic and acoustic-electric conversions of the transducers on the acoustic logging signal. The results show that acoustic-electric conversion through the transducer can cause not only a serious disturbance in the signal amplitude, but also an apparent transmission delay. For engineering applications, the amplitude variation and transmission delay must be accounted for in a practical analysis of the acoustic logging signal in rocks. The results also show that with enhanced understanding and proper justification, the error caused by the acoustic-electric conversion can be significantly reduced in evaluation of the cement bond quality of a cased well, and the accuracy of rock porosity calculated using the measured acoustic velocity can be increased.
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Fa, L., Xie, W., Tian, Y. et al. Effects of electric-acoustic and acoustic-electric conversions of transducers on acoustic logging signal. Chin. Sci. Bull. 57, 1246–1260 (2012). https://doi.org/10.1007/s11434-012-5034-1
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DOI: https://doi.org/10.1007/s11434-012-5034-1