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Abstract

Summary

Carbonate reservoirs are some of the most important plays in the oil and gas business around the world. The monitoring of fluid distribution within those rocks is not an easy task due to the complexity of their pore structure, which also influences the relationship between the petrophysical properties and seismic data. Fluid substitution theories like Biot-Gassmann often used for that monitoring, depend on the accurate info of the dry bulk modulus (Kdry), which is usually obtained from P- and S-wave velocities. In cases where those velocities are not available, it is possible to use other theories like the Nur (critical porosity) model to estimate Kdry from porosity and mineral content. This work aims to use a dataset of petrophysical data measured in core plugs to evaluate how the external pressure influence the prediction of Kdry based on the Nur Model. The results indicated the impact of pressure in the lab measured porosity affect the accuracy of such predictions and a modification in the Nur Model is proposed for accounting those effects.

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/content/papers/10.3997/2214-4609.201901022
2019-06-03
2024-04-23

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References

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Pressure Effects on the Prediction of the Dry Bulk Modulus Using the Nur Critical Porosity Model
Conference Proceedings 2019, 1 (2019); https://doi.org/10.3997/2214-4609.201901022
/content/papers/10.3997/2214-4609.201901022
/content/papers/10.3997/2214-4609.201901022
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