孔隙度、泥质含量、饱和度对岩石声波的影响

乔文孝等．孔隙度、泥质含量、饱和度对岩石声波的影响．测井技术，１９９５，１９（３）：１９４～１９９早期的Ｂｉｏｔ多孔介质声学理论只适用于骨架固体和孔隙内流体分别为一种固体和一种流体，这限制了该理论在实际工程中的应用。本文把Ｂｉｏｔ理论和Ｂｅｒｒｙｍａｎ理论结合起来，研究了多孔介质的声学性质（纵、横波波速等）与孔隙度、饱和度、泥质含量及频率之间的关系，并将计算结果与实验测量结果进行了对比，二者的趋势有较好的一致性。本文的工作表明，Ｂｏｉｔ理论和Ｂｅｒｒｙｍａｎ理论可方便地应用于声全波测井和地震勘探。

The Effects of Porosity, Clay Content and Saturation onRock''''s Acoustic Properties

In early Blot theory on acoustic wave propagation in fluid-saturated porous media,only one kind of material was assumed to form skeleton solid and to fill pore respectively.That restricts the application of the theory in practical engineering. Blottheory and Berryman theory are combined to investigate the effects of porosity,saturation,clay content and acoustic frequency on acoustic properties of rock. It isshown that the calculated results are in good agreement with that measured. Therefore,Biot theory combined with Berryman theory can be employed in acoustic welllogging and seismic exploration conveniently.