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杨摄武,季佑仙:层速度—岩性指数剖面的程序实现及应用,《石油地球物理勘探》,22(2)1987:228～231在很多地区,直接利用层速度来预测岩性是可能的,特别是用来区分砂泥岩的偏砂相或偏泥相是有效的。我们知道,岩层的弹性性质不同,地震波在其中传播的速度就不同。在碎屑岩中,砂泥岩比值的变化必定要引起岩石弹性性质的改变,致使地震波在其中传播的速度亦发生相应的变化。这就为我们利用层速度资料来推断碎屑岩中砂泥岩比值的变化提供了重要的根据。理论研究和大量实际资料表明,地震波在岩层中的传播速度和岩石的性质、密度、
Yang Weibu, Ji Youxian: Program Implementation and Application of Layer Velocity-Lithology Index Profile, “Petroleum Geophysical Prospecting”, 22 (2) 1987: 228 ~ 231 It is possible to predict the lithology directly by layer velocities in many areas In particular, it is effective to distinguish the sandstone from the masonry or muddy phase. We know that the rock’s elastic properties are different and the seismic waves propagate at different speeds. In the clastic rocks, the change of the ratio of sandstone and mudstone must inevitably lead to the change of the elastic properties of the rock, resulting in the corresponding changes in the speed of the seismic waves propagating therein. This provides an important basis for us to use layer velocity data to deduce the change of sandstone-mudstone ratio in clastic rocks. Theoretical studies and a large number of actual data show that the seismic wave propagation velocity in the rock and rock properties, density,