摘要
为了探讨孔隙流体的黏滞系数对饱和砂岩的衰减、模量和速度色散的影响，本文进行了四种不同黏滞系数的饱和长石砂岩的低频共振实验，结果发现在0．01～10Hz频带范围内，无论是衰减温度话还是衰减频率谱，都显示出衰减随黏滞系数的增大成良好的线性增长关系，黏滞系数越大楼量越大；同时还具有明显的模量与速度色激，而且随着黏滞系数的增大，模量与速度色权有增强的趋势。
Low-frequency covibration experiments of four kinds of fluid-saturated feldspar sandstones which have different viscosity coefficients respectively were conducted so as to know how fluid viscosity coefficient influences attenuation, modulus and velocity dispersion in fluid-saturated sandstone. These experiments lead to believable conclusions:Both attenuation temperature spectrum and attenuation frequency spectrum show that acoustic attenuation is linear with viscosity coefficient in 0. 01-10Hzband. Higher viscosity coefficient results in higher modulus.There occur obvious modulus and velocity dispersions, which tend severe with the increase of viscosity coefficient.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
1999年第4期420-425,共6页
Oil Geophysical Prospecting
基金
国家自然科学基金!49774250
关键词
衰减
模量
饱和砂岩
孔隙度
流体
粘性
地震勘探
viscosity, attenuation, modulus dispersion, velocity dispersion, saturated sandstone
