测井声波波形与声源的特性有关

Sonic Waveforms Related with Characteristics of Sonic Source

根据推导出的圆管状压电换能器在各种激励电压信号作用下的声源函数和谱函数以及声波测井正演问题研究出的石油井孔中任意一点上的声波公式,用计算机技术模拟出了相应的测井记录声波全波列,并将它们输入到声波全波列测井处理程序中进行处理。正演模拟结果和处理结果表明,测井记录的声波全波列不但与所测地层的性质有关,而且与声源的特性有关,声源特性对测井记录的声波全波列的质量有一定的影响。

Fa Lin,Li Ya,Feng Zhiyong.Sonic Wave Forms Related with Characteristics of Acoustic Source.WLT, 1993;17(3):197～203 Based on acoustic source and spectrum functions from cylindrical piezoelectric transducer stimulated by voltage signals and a formula derived from forward modelling of acoustic log for sonic pressure at any point in borehole,an acoustic full wave train as recorded in the well is simulated and input into computer for full wave processing.Forward modelling and processing results show that the recorded sonic wave curves are not only related to formation properties,but also to the characteristics of acoustic source.