Contents of this paper were reviewed by the Technical Committee of the 16 th International Congress of the Brazilian Geophysical Society and do not necessarily represent any position of the SBGf, its officers or members. Electronic reproduction or storage of any part of this paper for commercial purposes without the written consent of the Brazilian Geophysical Society is prohibited.
Contents of this paper were reviewed by the Technical Committee of the 16 th International Congress of the Brazilian Geophysical Society and do not necessarily represent any position of the SBGf, its officers or members. Electronic reproduction or storage of any part of this paper for commercial purposes without the written consent of the Brazilian Geophysical Society is prohibited.
Estimation of stress and geomechanical properties of anisotropic fractured reservoirs is a critical issue during oil & gas field development. Since the seismic data is sensitive to these properties, studies of the variation of Pwave reflection coefficients with azimuth in a horizontal transverse isotropic (HTI) media can be applied to obtain fracture properties and extended to estimate the in-situ principal stresses. Therefore, considering the Rüger reflectivity approximation for HTI media, we employ a seismic to geomechanics relation through the Linear Slip Theory (LST), based on a simplified Hooke's law for HTI media, to estimate fracture properties. Finally, we derive an anisotropic poroelastic horizontal stress model in order to analyze the influence of in-situ principal stresses in the AVO response for an ISO-HTI interface at the symmetryaxis and isotropy planes.
Contents of this paper were reviewed by the Technical Committee of the 16 th International Congress of the Brazilian Geophysical Society and do not necessarily represent any position of the SBGf, its officers or members. Electronic reproduction or storage of any part of this paper for commercial purposes without the written consent of the Brazilian Geophysical Society is prohibited.
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