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dc.contributor.authorBrajanovski, Miroslav
dc.contributor.authorGurevich, Boris
dc.contributor.authorNadri, D.
dc.contributor.authorUrosevic, Milovan
dc.contributor.editorS Komatina-Petrovic
dc.identifier.citationBrajanovski, M. and Gurevich, B. and Nadri, D., and Urosevic, M. 2009. Stress induced azimuthally anisotropic reservoir - AVO modeling, in Komatina-Petrovic, S. (ed), The 5th Congress of Balkan Geophysical Society, May 10 2009. Belgrade, Serbia: Balkan Geophysical Society.

The analysis of rock anisotropy in terms of seismic velocities and within the context of rock physics (Biot- Gassmann theory of poroelasticity) provides important information for the evaluation of the stress state (tensors) of rocks, detection of the directions of formation weaknesses, helps in the estimation of overall permeability and failure prediction. Understanding the influence of stress and pore pressure on seismic velocities is important for 4-D reflection seismic interpretation, AVO analysis and reservoir modeling. Laboratory measurements were carried out on spherical shale samples from the overburden under confining stress up to 400 MPa, by means of ultrasonic soundings in 132 independent directions. Such an approach enables the estimation of 3-D elastic anisotropy. Since the sandstones were partly unconsolidated, it was not possible to take ultrasonic measurements. To overcome this, we developed a method for stress induced azimuthal anisotropy estimation using only cross-dipole logging data. These results give the possibility for anisotropic correction in AVO analysis.

dc.publisherBalkan Geophysical Society
dc.titleStress induced azimuthally anisotropic reservoir - AVO modeling
dc.typeConference Paper
dcterms.source.titleCongress of Balkan Geophysical Society
dcterms.source.seriesCongress of Balkan Geophysical Society
dcterms.source.conferenceThe 5th Congress of Balkan Geophysical Society
dcterms.source.conference-start-dateMay 10 2009
dcterms.source.conferencelocationBelgrade, Serbia
curtin.accessStatusOpen access
curtin.facultyDepartment of Exploration Geophysics
curtin.facultyFaculty of Science and Engineering
curtin.facultyWA School of Mines

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