Method for correction of the prestack migration amplitude of converted waves

• Autorzy: Kostecki, A. , Półchłopek, A.
• Języki publikacji: EN

Abstrakty

EN

The paper presents a method for correction of amplitude of prestack migration using the reflectivity function. The solution of wave equations for heterogeneous media expressed in the form of Neumann series for converted waves was used to find the reflectivity function. The performance of the proposed method was verified using synthetic models of wavefields. The synthetic models of wavefields were also used to compare amplitude correction levels required by the presented method and the standard amplitude correction methods, i.e., the methods using the spherical divergence and extention factor.

Słowa kluczowe

EN

converted waves; prestack depth migration; amplitude decay; spherical divergence; reflectivity function

• Czasopismo: Acta Geophysica
• Rocznik: 2006
• Tom: Vol. 54, no. 2
• Strony: 113-125

Twórcy

autor

Kostecki, A.

autor

Półchłopek, A.

• Oil and Gas Institute ul. Lubicz 25A, 31-503 Kraków, Poland,

Bibliografia

• Bleistein, N., 1987, On the imaging of reflectors in the earth, Geophysics 52, 931-942.
• Brekhovskikh, L.M., 1957, Waves in Layered Media, Izd. Akad. Nauk, Moskva (in Russian).
• Cohen, J.K., and N. Bleistein, 1985, Velocity inversion procedure for acoustic waves, Geophysics 50, 1077-1087.
• Červeny, V., and M. de Castro, 1993, Research note: Application of dynamic ray tracing in the 3D inversion of seismic reflection data, Geophys. J. Int. 113, 776-779.
• Červeny, V., I. Mołotkow and I. Psencik, 1977, Ray Method in Seismology, Universita Karlova, Praha.
• Doherty, P., 1991, A brief comparison of some Kirchhoff integral formulas for migration, Geophysics 56, 1164-1169.
• Fejnberg, E., 1961, Radiowave Propagation in the Earth, Izd. Akad. Nauk, Moskva (in Russian).
• Hanitzsch, C., 1997, Comparison of weights in prestack amplitude - preserving Kirchhoff depth migration, Geophysics 62, 1812-1816.
• Kostecki, A., and A. Półchłopek, 1998a, Stable depth extrapolation of seismic wavefields by a Neumann series, Geophysics 63, 2063-2071.
• Kostecki, A., and A. Półchłopek, 1998b, Prestack migration in lateral inhomogeneous media, Prace Inst. Górn. Naft. i Gazown. 94 (in Polish).
• Kostecki, A., and A. Półchłopek, 2003, Prestack depth migration using converted waves, Acta Geophys. Pol. 51, 1, 73-84.
• Schleicher, J., M. Tygiel and P. Hubral, 1993, 3D true amplitude finite-offset migration, Geophysics 58, 1112-1126.
• Stolt, R.H., and A.K. Benson, 1986, Seismic Migration. Theory and Practice, Geophysical Press, London, pp. 382.
• Tien-when Lo., and P.L. Inderwiesen, 1994, Fundamentals of Seismic Tomography, Geophysical Monograph Series, Society of Exploration Geophysicists, Tulsa.