摘要：We built a broad-frequency-band measurement system for rock elastic parameters based on the stress-strain method following Batzle et al., Geophysics 71, N1-N9 (2006). The system gives strain amplitude anomalies at some measurement frequencies. These anomalies put limitations on the range of the measurement frequency and jeopardize the credibility of the measurement results over a broad frequency band. To overcome these limitations, we investigated the cause of these anomalous strains by numerical model simulations with a finite element method based on the experimental apparatus. Through the systematic analysis of the modeling results, we conclude that the resonances caused by non-axial perturbations lead to such anomalous measurement results. Based on the analysis, we give a solution to reduce the effect of the resonances and shift the first resonance frequency beyond the frequency band of 1-2000 Hz. The enhanced measurement system can provide robust and reliable measurements on the elastic parameters of rocks between 1 and 2000 Hz, which is crucial for a quantitative study of the frequency-dependent phenomenon related to fluid effects. This in turn will provide a powerful tool for the experimental characterization of elastic properties of oil/gas reservoir rocks, thus laying a solid foundation for low-frequency rock physics analysis and quantitative seismic interpretation.
© 2018 Author(s).

ISSN号：0034-6748

卷、期、页：v 89,n 6,

发表日期：2018-06-01

期刊分区（SCI为中科院分区）：三区

收录情况：SCI（科学引文索引印刷版）,ESI（基本科学指标数据库）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：Review of Scientific Instruments

通讯作者：孙超,赵立明

第一作者：唐跟阳,赵建国,王尚旭

论文类型：期刊论文

论文概要：孙超,唐跟阳,赵建国,赵立明,王尚旭，An enhanced broad-frequency-band apparatus for dynamic measurement of elastic moduli and Poisson's ratio of rock samples，Review of Scientific Instruments，2018，v 89,n 6,

论文题目：An enhanced broad-frequency-band apparatus for dynamic measurement of elastic moduli and Poisson's ratio of rock samples