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Evaluation of Static and Dynamic Elastic Properties in Carbonate Rocks
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 81st EAGE Conference and Exhibition 2019, Jun 2019, Volume 2019, p.1 - 5
Abstract
The understanding of rocks mechanical properties is essential for some of the petroleum industry sectors, such as drilling, well stimulation and development. Rock mechanics data, as Young's modulus and Poisson's ratio, can be obtained by the static and dynamic conditions using triaxial compressive and ultrasonic tests, respectively. This work analyses the behaviour of static and dynamic elastic properties in a set of 20 carbonate core samples and compares with other literature results. Our approach is based in fit equations to predict static properties from the dynamic data, considering the occurrence of the frictional sliding or closing of cracks and microcracks, while performing triaxial tests. The results indicated a strong relationship among the effective pressures applied, porosity, density, and the efficiency of static and dynamic property relations. Additionally, porosity type could be indicated as one of the causes of the difference between static and dynamic moduli, since the inclusion of density and porosity in the relations demonstrated a significant improvement between Young's static and dynamic modulus correlations.