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Industry Article: In Situ Calibrated Velocity-to-Stress Transforms Using Shear Sonic Radial Profiles for Time-Lapse Production Analysis

In Situ Calibrated Velocity-to-Stress Transforms Using Shear Sonic Radial Profiles for Time-Lapse Production Analysis
Publication: The Leading Edge (TLE)
Publication Date: 03/01/2015

In a case study from Malaysia, horizontal stress magnitudes and third-order elastic constants were determined using full-waveform borehole acoustic waves along with the effective vertical stress and an acoustoelastic model based on nonlinear elasticity. When all three stress magnitudes and the stress-sensitivity coefficients of the zone of interest are known, the in situ calibrated velocity-to-stress transforms can be used to understand the effects of the stress path on velocities and could be used for time-lapse seismic and reservoir-geomechanics simulations.




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