1887

Abstract

Summary

Diagenetic changes intensely impact petrophysical properties of reservoir rocks. In particulary permeability and tortuosity. Changes in tortuosity influencing cementation exponent and thus saturation evaluation as well. In fractured and vuggy carbonate reservoirs permeability evaluation is impossible without knowledge of porosity components (intergranular, vugs and fractures). Rock-physics templates allows continous evaluation of the diagenetic changes. This paper demonstrates simple and yet elegant solution for the variable cementation exponent evaluation, involving rock-physics workflows. In addition to this new rock-physics model for fractured and vuggy carbonates has been introduced. The model allows either simulate acoustic respond in the fractured and vuggy carbonates. Alternatively porosity components evaluation can be done using measured shear velocity. The evaluation results have been compared to the Image logs. The comparison shows remarkable parity between rock-physics driven porosity components and Image analysis results.

© EAGE Publications BV
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/content/papers/10.3997/2214-4609.20132102
2014-02-17
2025-12-08

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Tackling Diagenesis: Rock Physics Models Applications into Advanced Petrophysics
Conference Proceedings 2014, 1 (2014); https://doi.org/10.3997/2214-4609.20132102
/content/papers/10.3997/2214-4609.20132102
/content/papers/10.3997/2214-4609.20132102
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