Numerical simulation of the dead-volume effect in seismic-frequency measurements of elastic properties of fluid-saturated rocks

Cheng-Hao Cao; Boris Gurevich; Vassili Mikhaltsevitch; Li-Yun Fu

doi:10.1080/22020586.2019.12073119

2nd Australasian Exploration Geoscience Conference: Data to Discovery

ISSN: 2202-0586
E-ISSN:

oa Numerical simulation of the dead-volume effect in seismic-frequency measurements of elastic properties of fluid-saturated rocks
Authors Cheng-Hao Cao^a,c,f, Boris Gurevich^d, Vassili Mikhaltsevitch^e and Li-Yun Fu^b
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^a Key Laboratory of Petroleum Resource Research, Institute of Geology and Geophysic, Chinese Academy of Sciences, , No. 19, Beitucheng Western Road, Beijing, 100029, , China ^b Key Laboratory of Deep Oil and Gas, China University of Petroleum (East China), ,Shandong, 266580, , China ^c Institutions of Earth Science, Chinese Academy of Sciences, , 19 Beitucheng Western Road, Chaoyang District, Beijing, 100029, , China ^d Curtin University, , GPO Box U 1987, Perth, , WA 6845A, , ^e Curtin University, GPO Box U 1987 Perth, , WA, 6845, , ^f [email protected], , [email protected], , [email protected], , [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2019, Issue 2nd Australasian Exploration Geoscience Conference: Data to Discovery, Dec 2019, p. 1 - 3
DOI: https://doi.org/10.1080/22020586.2019.12073119
- Published online: 01 Dec 2019

Abstract

Summary

Low-frequency measurements of the elastic properties rocks based on the forced-oscillation method is an emerging approach for calibration of well log and seismic measurements. The dispersive properties observed in the low-frequency experiments are usually dependent on the boundary conditions of a tested rock sample, whether the sample surface is properly sealed, or surrounded by rigid pore-fluid containers connected with the pore space of the rock, so-called “dead volumes”. By treating the dead volume as a specific porous material, we analysed the impact of the dead volumes on the strains in the sample via numerical simulation of the forced oscillation tests, our simulation is based on the models incorporating the properties and physical characteristics of the laboratory samples. The numerical results are in good agreement with the analytical solutions.

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References

Chapman, S., and Quintal, B. 2018, Numerical analysis of local strain measurements in fluid-saturated rock samples submitted to forced oscillations. Geophysics, 83, MR309-MR316.
Jaeger, J. C., Cook, N. G. W., and Zimmerman, R. 2007, Fundamentals of Rock Mechanics: Wiley.
Mikhaltsevitch, V., Lebedev, M., and Gurevich, B. 2014, A laboratory study of low-frequency wave dispersion and attenuation in water-saturated sandstones. The Leading Edge, 33, 616-622.
Mikhaltsevitch, V., Lebedev, M., Pervukhina. M., and Gurevich, B. 2019, The effect of the boundary conditions on the elastic moduli measurements at low frequencies: Experimental study: 5th International Workshop on Rock Physics, Expanded Abstracts, Hong Kong, 4.
Pimienta, L., Borgomano, J.V.M., Fortin, J. and Guéguen, Y. 2016, Modelling the drained/undrained transition: effect of the measuring method and the boundary conditions. Geophysical Prospecting, 64, 1098-1111.
Quintal, B., Rubino, J. G., Caspari, E., and Holliger, K. 2016, A simple hydromechanical approach for simulating squirt-type flow. Geophysics, 81, D335-D344.
Zimmerman, R. W. 2000, Coupling in poroelasticity and thermoelasticity. International Journal of Rock Mechanics and Mining Sciences, 37, 79-87.

/content/journals/10.1080/22020586.2019.12073119

Article Type: Research Article

Keyword(s): attenuation; bulk modulus; Dead volume

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oa Numerical simulation of the dead-volume effect in seismic-frequency measurements of elastic properties of fluid-saturated rocks

Abstract

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