西南石油大学学报（自然科学版）2017，Vol.39Issue(2)：53-61,9.DOI:10.11885/j.issn.1674-5086.2016.01.08.01
页岩层理与含水率对声波传播影响的实验研究
An Experimental Study on the Effects of Shale Stratification and Hydration on the Transmission of Acoustic Waves
摘要
Abstract
Studies on the acoustic characteristics of rocks are the groundwork for geomechanical logging and the evaluation of reservoir properties,and the acoustic properties of shale are especially affected by its stratification and hydration.Hence,we have performed ultrasonic transmission tests on stratified shale with varying levels of hydration,to study the characteristics of the soundwaves' transmission speed and attenuation of energy under these circumstances.We have found that as the stratification angle increases,the P-and S-wave velocities and the P-to-S-wave velocity ratio decrease,while the attenuation coefficients of the P-and S-waves increase.Furthermore,as hydration increases,the velocity of P-waves first increase,then decrease at higher levels of hydration,whereas its attenuation coefficients are inversely correlated.The velocity of S-waves decreases slightly at lower levels of hydration,and basically remains unchanged at higher levels of hydration,while its attenuation coefficients are not significantly affected by hydration.A comparative analysis of the normalized results demonstrates that stratification angles have a greater effect on P-and S-wave velocities than hydration.关键词
页岩/含水率/层理倾角/声波特性/归一化/实验Key words
shale/water content/stratification angle/acoustic characteristics/normalization/experiment分类
能源科技引用本文复制引用
范翔宇,段美恒,张千贵,赵鹏斐,贾光圣..页岩层理与含水率对声波传播影响的实验研究[J].西南石油大学学报（自然科学版）,2017,39(2):53-61,9.基金项目
国家重点基础研究发展计划(2013CB228003) （2013CB228003）
中国博士后科学基金(2014M560728) （2014M560728）
