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声波测井非纵波讯息问题的提出声波测井中综合利用纵波、横波及其他类型波的运动学、动力学参数以研究地质问题,是一种新方向,其优点是可以利用除纵波以外其它类型波的速度、幅度等参数,以获取地层弹性的更多讯息。特别是在井壁和井下仪器之间环形缝隙的流体中传播的管波,频率较低(3.5千赫左右),衰减比常规的20千赫声讯号小得多,因而允许用较大的源距,尤其是这种讯息的记录可在套管井中进行,并在井周围的空间有较大的探测半径,因而是一种有前途的新方法。苏联文献在1977年就报道过在井壁和
Synthetic use of kinematic and kinetic parameters of P-wave, S-wave and other types of waves to study geological problems in sonic log is a new direction. The advantage of this method is that it is possible to use other types than S-wave Wave speed, amplitude and other parameters, to get more information on formation elasticity. In particular, the tube waves propagating in the fluid in the annular gap between the borehole wall and the downhole tool have a lower frequency (around 3.5 kHz) and a much smaller attenuation than the conventional 20 kHz acoustic signal, thus allowing a larger source The distance, and in particular the record of such information, is a promising new method for conducting cased holes with a large detection radius in the space around the well. The Soviet literature reported in 1977 on the borehole wall and