Application of AVAZ inversion algorithm based on exact formulas to a wide-azimuth seismic survey data
https://doi.org/10.51890/2587-7399-2021-6-2-12-19
Abstract
Results of applying of nonlinear AVAZ inversion optimization algorithm to data from 3D wide-azimuth seismic survey in the Republic of Serbia are presented. The algorithm is based on exact reflection coefficients formulas for PP reflection from anisotropic medium. We compare it with a conventional algorithm based on Ruger linear approximation of P-wave reflection from a boundary between isotropic and anisotropic (HTI) media. Maps of fracture orientation and anisotropy degree are more detailed in the case of using AVAZ inversion based on exact formulas. The results are in general accordance with the FMI well data, which indicates reliable performance of the algorithm.
About the Authors
G. A. Dugarov
Trofimuk Institute of Petroleum Geology and Geophysics SB RAS
Russian Federation
Russian Federation
T. V. Nefedkina
Trofimuk Institute of Petroleum Geology and Geophysics SB RAS
Russian Federation
Russian Federation
I. Yu. Bogatyrev
NTC NIS – Naftagas
Russian Federation
Russian Federation
N. A. Goreiavchev
Trofimuk Institute of Petroleum Geology and Geophysics SB RAS; Novosibirsk State University
Russian Federation
Russian Federation
G. M. Mitrofanov
Trofimuk Institute of Petroleum Geology and Geophysics SB RAS; Novosibirsk State University
Russian Federation
Russian Federation
T. V. Olneva
Gazpromneft NTC LLC
Russian Federation
Russian Federation
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Review
For citations:
Dugarov G.A., Nefedkina T.V., Bogatyrev I.Yu., Goreiavchev N.A., Mitrofanov G.M., Olneva T.V. Application of AVAZ inversion algorithm based on exact formulas to a wide-azimuth seismic survey data. PROneft. Professionally about Oil. 2021;6(2):12-19. (In Russ.) https://doi.org/10.51890/2587-7399-2021-6-2-12-19
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