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在流体饱和多孔介质棒上,已进行了许多胀缩、弯曲和扭转震动的测量。胀缩和弯曲震动的测量可得到杨氏模量波的损耗参数 Q_r,扭转震动的测量得到切变波的 Q_(?)。然而,在假设流体饱和岩石是各向同性固体时,大部分岩石的 Q_p 可由压缩波计算。从这些测量中我们发现了计算Q_p 的错误,同时强调研究工作者在解释介质棒中胀缩波的数据时,要考虑到简单流体粘度引起的损耗。通过应用已发表的理论,我们认为胀缩波的衰减峰频率预期在几赫到几千赫,并取决于棒的直径,用已发表的水、乙醛和 n-癸烷饱和的 Navajo 砂岩测量结果与计算的曲线比较,在每一种情况下,计算的峰频与测量峰频一致。由于饱和流体(水)的粘度变化,当温度从4℃到25℃时峰频随之漂移。
On fluid-saturated porous media rods, numerous measurements of expansion, flexion, and torsional vibration have been made. Swelling and bending vibration measurement can be obtained Young’s modulus wave loss parameter Q_r, torsional vibration measurement shear wave Q_ (?). However, assuming that fluid-saturated rocks are isotropic solids, Q_p for most rocks can be calculated from compressional waves. From these measurements we found the error of calculating Q_p, emphasizing that the researchers consider the loss due to the viscosity of a simple fluid in interpreting the data of the expansion and contraction wave in the media rod. By applying the published theory, we believe that the frequency of the attenuation peaks of swell waves is expected to be in the order of a few hertz to a few kilohertz and, depending on the diameter of the rod, is measured with Navajo sand saturated with published water, acetaldehyde and n-decane The result is compared with the calculated curve, in each case the calculated peak frequency is consistent with the measured peak frequency. Due to the change in the viscosity of the saturated fluid (water), the peak frequency drifts as the temperature goes from 4 ° C to 25 ° C.