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Rock Physics Diagnostics of the Unayzah Sandstone
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, EAGE Workshop on Applications and Challenges of Rock Physics for Quantitative Geophysical Interpretation, May 2012, cp-274-00002
- ISBN: 978-94-6282-066-1
Abstract
The Unayzah sandstone in Central Saudi Arabia is a mature consolidated formation. The effective medium model of Raymer-Hunt-Gardner accurately predicts the effects of porosity, lithology and pore-fluid on the seismic response. Empirical results are calibrated to measured data at well log and seismic scale to confirm the validity of the model. This model-driven approach will be used to constrain the amplitude-versus-angle (AVA) inversion results for P-impedance and Vp/Vs ratio, which is then used to predict porous oil-saturated zones within the formation.