Numerical simulation of fractured media

Mu Luo; Brian J. Evans

doi:10.1071/ASEG2001ab080

ISSN: 2202-0586
E-ISSN:

oa Numerical simulation of fractured media
Authors Mu Luo^a and Brian J. Evans^b
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^a Curtin University of Technology, Australia, [email protected] ^b Curtin University of Technology, Australia, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2001, Issue ASEG2001 - 15th Geophysical Conference, Dec 2001, p. 1 - 3
DOI: https://doi.org/10.1071/ASEG2001ab080
- Published online: 01 Dec 2001

Abstract

Numerical simulations using low order approximations of the full Zoeppritz equations were performed on anisotropic parameters derived from the Sydney basin and the North West Shelf region. The resultant amplitude coefficients were then displayed in full azimuths in which a lineation indicates abnormalities caused by the fractured media. Our studies show that amplitude variations with offset and azimuth (AVAz) depend not only on fracture orientation, but also on impedance differences of P- and S-waves in the fractured media.

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2001-12-01

2026-01-25

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References

Hudson, J. A., 1981, Wave speeds and attenuation of elastic waves in materials containing cracks: Geophys. J. Roy. Astr.Soc, 64, 133-150.
Luo, Mu., and Evans, B.J., 2000, A new method for fracture mapping using 3-D seismic data: 5’ SEGJ Int. Symposium, Tokyo, http://www.gsj.go.jp/~g0192/segj2000/timetable.html, 6-9.
MacBeth, C, 1999, Azimuthal variation in P-wave signature due to fluid flow: Geophysics on-line, March 16, http://geo_online.org/eman/emanlist.html, 1-45.
Perez, M. A., Gibson, R. L., and Toksoz, M. N., 1999, Detection of fracture orientation using azimuthal variation of P-wave AVO responses: Geophysics, 64, 1253-1265.
Ramos A. C. B., and Davis T. L., 1997, 3-D AVO analysis and modelling applied to fracture detection in coalbed methane reservoirs: Geophysics, 62, 1683-1695.
Ruger, A., 1996, Variation of /?-wave reflectivity with offset and azimuth in anisotropy media: 66’ Ann. Internat. Mtg., Soc. Expl. Geophys., Expanded Abstracts, 1810-1813.
Thomsen, L., 1985, Weak elastic anisotropy: Geophysics, 51, 1954-1966.
Yu, G., Durney, D. W., and Vozoff, K., 1990, P-wave velocity in Sydney basin coal: dependence on confining pressure and water saturation: in Advances in the study of the Sydney basin, Proceeding of 24 Symp. (Newcastle, N.S.W., Australia), 130-137.

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Article Type: Research Article

Keyword(s): amplitude coefficient; fractured media; Numerical simulation

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