李长文，余春昊，张银海等．岩石声波主频漂移现象及其应用探讨．测井技术，１９９９，２３（４）：２５３～２５７岩石超声测量分析结果表明，不同岩石具有不同的纵波或横波频率特性，岩石声衰减越大，其频率主值越低。纵波主频随孔隙流体性质变化较显著，与含气饱和度之间呈“Ｕ”字形关系。井孔模型中的声波全波列观测实验也指出，随着地层孔隙度及渗透率的增大，不仅各组分波的衰减增大、速度减小，而且其主频也有不同程度的降低，特别是斯通利波的主频明显向低频方向漂移，高频组分波比低频组分波衰减更大。上述实验现象得到了实际声波测井资料的印证。声波全波列频谱特征参数可用于非均质复杂储层评价和声波测井仪器改进。 Li Changwen, Yu Chunhao, Zhang Yinhai and so on. Frequency shift of rock acoustic wave and its application. Logging Technology, 1999,23 (4): 253 ~ 257 The results of ultrasonic measurement of rock show that different rocks have different characteristics of longitudinal or shear frequency. The larger the attenuation of rock sound is, the lower the main frequency is. The longitudinal frequency of the longitudinal wave changes significantly with the properties of the pore fluid, and shows a “U” shape relationship with the gas saturation. In the wellbore model, the observation of full-wave acoustic wave also shows that with the increase of formation porosity and permeability, not only the attenuation of each component wave increases and the velocity decreases, but also its dominant frequency decreases to some extent. In particular, the dominant frequency of Stoneley obviously shifts to the low frequency, and the high-frequency component wave attenuates more than the low-frequency component wave. The above experimental phenomena have been confirmed by the actual acoustic logging data. The acoustic full-wave spectrum spectral parameters can be used to evaluate heterogeneous complex reservoirs and improve acoustic logging tools.