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石油勘探的声波测井数据中包含大量的地下地层信息,从声波信息时频分析的原理出发,根据地下不同地层岩石对声波吸收程度的不同,把包含在实测声波测井数据中的信息转换为反映地下岩石层性质的信息,初步探讨并总结了各个模式波的频域信息在石油钻井地质解释中的应用,为全波列测井的应用提供了一个新的方向。通过对实际测量的声波数据分析,找到了模式波的主频值及主频差值与地下岩石地层岩性变化之间的关系,总结了试油井段的纵横波比值、纵波主频值及主频差值的平均值的变化规律,为可能含油气的储层特别是特殊岩性储层的解释提供了一条新的途径。
According to the principle of time-frequency analysis of sound wave information, the information contained in the actual sonic log data is converted into The information reflecting the nature of the underground rock layer is discussed and summarized. The application of the frequency domain information of each mode wave in the geologic interpretation of petroleum drilling is preliminary discussed and a new direction is provided for the application of the full wave logging. Through the analysis of the actual measured acoustic data, the relationship between the dominant frequency value and the dominant frequency difference of the model wave and the lithology change of the underground rock stratum has been found out. The ratio of longitudinal to transverse wave, The variation law of the average of the frequency difference values provides a new way for the interpretation of reservoirs that may have oil and gas, especially for special lithologic reservoirs.