DOI: 10.1002/grl.50346
论文题名: Determination of rock acoustic properties at low frequency: A differential acoustical resonance spectroscopy device and its estimation technique
作者: Zhao J. ; Tang G. ; Deng J. ; Tong X. ; Wang S.
刊名: Geophysical Research Letters
ISSN: 0094-8889
EISSN: 1944-8620
出版年: 2013
卷: 40, 期: 12 起始页码: 2975
结束页码: 2982
语种: 英语
英文关键词: differential acoustical resonance spectroscopy
; Gassmann equation
; low-frequency measurement technique
; rock acoustic properties
; whole-curve-fitting inversion
Scopus关键词: Acoustic resonance spectroscopies
; Acoustical resonance
; Gassmann equations
; Measurement techniques
; Nonlinear least squares
; Numerical and experimental study
; Simultaneous estimation
; whole-curve-fitting inversion
; Compressibility
; Curve fitting
; Estimation
; Porosity
; Rocks
; Acoustic properties
; acoustic method
; acoustic property
; compressibility
; density
; inverse analysis
; least squares method
; porosity
; rock property
; seismic wave
英文摘要: A laboratory device, Differential Acoustic Resonance Spectroscopy (DARS), has been developed to investigate the acoustic properties of rock materials below 1 KHz. The device is based on analyzing shifts of resonance frequency of a cavity perturbed by the presence of a small sample. Numerical and experimental studies have previously shown that this technique can be used to estimate the compressibility of samples. In this study, we adopt a nonlinear least-squares whole-curve-fitting inversion approach, which for the first time allows estimation of both the compressibility and density of rock samples. In comparison to previous estimation techniques, this inversion method provides more reliable estimation of rock acoustic properties. This research proves that the DARS laboratory device, in conjunction with the calibration technique proposed herein, is a useful tool to estimate the properties of small rock samples. In addition, the simultaneous estimation of compressibility and density can potentially provide information on porosity and, by extension, a link between porosity and acoustic modulus at low frequency. Key Points Acoustic properties measurements at low-frequency(<700Hz) Simultaneous estimation of compressibility and density of rock samples Frequency dependency of seismic wave ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880562212&doi=10.1002%2fgrl.50346&partnerID=40&md5=a1286515dcfbb31551c62120da03d441
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6153
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Petroleum Resources and Prospecting, CNPC, China University of Petroleum (Beijing), Beijing, ChangPing 102249, China
Recommended Citation:
Zhao J.,Tang G.,Deng J.,et al. Determination of rock acoustic properties at low frequency: A differential acoustical resonance spectroscopy device and its estimation technique[J]. Geophysical Research Letters,2013-01-01,40(12).