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Novel wide-angle AVO attributes using rational function

Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Conventional AVO inversion employs Zoeppritz equations and various approximations to them to obtain the refection coeffcients of plane-waves, which are confned to a certain (small) angle range (mostly below 40°). However, near the critical angles (wide-angle), refections at the post-critical angles provide much more potential for velocity and density inversion because of the large amplitudes and phases-shifted waveforms, while the Zoeppritz equations are not applicable anymore. Hence, there is a strong demand for the research into wide-angle AVO. With refection coefcients at wide-angle corresponding to the features of rational function, we try to approximate the seismic data with vector ftting which is used to obtain the rational zero-pole and residual properties of wide-angle AVO. We apply this technique to classify AVO type and recognize the lithology. Our experiment shows that extending our research into wide-angle AVO is very promising in gathering richer data for a more accurate seismic analysis.
Czasopismo
Rocznik
Strony
123--132
Opis fizyczny
Bibliogr. 17 poz.
Twórcy
autor
  • College of Information Science and Engineering, China University of Petroleum (Beijing), Beijing 102249, China
  • State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China
autor
  • College of Information Science and Engineering, China University of Petroleum (Beijing), Beijing 102249, China
  • State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China
autor
  • College of Information Science and Engineering, China University of Petroleum (Beijing), Beijing 102249, China
  • State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China
Bibliografia
  • 1. Aki K, Richards PG (1980) Quantitative seismology, theory and methods. I. W. H. Freeman, New York
  • 2. Ayzenberg M, Tsvankin I, Aizenberg A, Ursin B (2009) Effective reflection coefficients for curved interfaces in transversely isotropic media. Geophysics 74(5):WB33–WB53
  • 3. Bortfeld R (1961) Approximations to the reflection and transmission coefficients of plane longitudinal and transverse waves. Geophys Prospect 9(4):485–502
  • 4. Castagna JP, Foster DJ, Swan HW (1998) Framework for avo gradient and intercept interpretation. Geophysics 63(3):948–956
  • 5. Červený V, Hron F (1961) Reflection coefficients for spherical waves. Studia Geophysica Et Geodaetica 5(2):122–132
  • 6. Debski W, Tarantola A (1995) Information on elastic parameters obtained from the amplitudes of reflected waves. Geophysics 60(5):1426–1436
  • 7. Downton JE, Ursenbach C (2006) Linearized amplitude variation with offset (avo) inversion with supercritical angles. Geophysics 71(5):E49–E55
  • 8. Gustavsen B, Semlyen A (1999) Rational approximation of frequency domain responses by vector fitting. IEEE Trans Power Deliv 14(3):1052–1061
  • 9. Haase AB (2004) Spherical wave avo modeling of converted waves in isotropic media. Seg Tech Progr Expand Abstr 23(1):2586
  • 10. Krail PM, Brysk H (1983) Reflection of spherical seismic waves in elastic layered media. Geophysics 48(6):655–664
  • 11. Li J, Xu WS, Hui DC, Yi YS, Bo WJ (2016) Study on frequency-dependent characteristics of spherical-wave PP reflection coefficient. Chin J Geophys 59:3810–3819
  • 12. Macdonald C, Davis PM, Jackson DD (1987) Inversion of reflection traveltimes and amplitudes. Geophysics 52(5):606–617
  • 13. O’Brien P (1963) A note on the reflection of seismic pulses with application to second event refraction shooting. Geophys Prospect 11(1):59–72
  • 14. Shuey RT (1985) A simplification of the Zoeppritz equations. Geophysics 50(50):609–614
  • 15. Ursenbach C, Haase AB, Downton JE (1949) An efficient method for avo modeling of reflected spherical waves. Seg Tech Progr Expand Abstr 24(1):202–205
  • 16. Winterstein DF (1985) Supercritical reflections observed in p- and s- wave data. Geophysics 50(2):185
  • 17. Zhu X, Mcmechan GA (2015) Elastic inversion of near- and postcritical reflections using phase variation with angle. Geophysics 77(4):149
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-6038beba-b041-42ea-b0c0-49bd23271874
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