Clay Models and Acoustic Velocities
Clay Models and Acoustic Velocities
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DOI：
10.2118/11031-ms
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发表时间：
1982
期刊：
影响因子：
--
通讯作者：
J. Minear
中科院分区：
文献类型：
--
作者：
J. Minear
声波速度，或由速度推导出的孔隙度，通常会因页岩或粘土的影响而修正。这些修正很大程度上是经验性的。两相多孔介质模型适用于沉积地层，为评估页岩和粘土对清洁地层的影响提供了一种新的方法。用一个特殊的模型计算了层状页岩和构造页岩以及分散粘土对纵波和横波慢度的影响。计算表明，层状页岩和构造页岩的效果大致相同。分散粘土的影响可以忽略不计。页岩和粘土对横波慢度的影响大于纵波慢度。
Acoustic velocity, or porosity derived from the velocity, is often corrected for shale or clay effects. These corrections are largely empirical. Two-phase porous media models are applicable to sedimentary formations and provide a new approach to estimating the effects of shale and clay on clean formations. One particular model is used to calculate the effects of laminated and structural shale and dispersed clay on compressional and shear wave slowness. The calculations suggest that laminated and structural shale have about the same effect. Dispersed clay may have negligible effect. Shale and clay increase shear wave slowness more than compressional wave slowness.