Influence of the internal geometry on the elastic properties of materials using 3D-printing of computer-generated random microstructures

Othmane Zerhouni 1 Maria-Gabriella Tarantino 1 Kostas Danas 1 Fei Hong 2
1 LMS - Laboratoire de mécanique des solides
2 CSTJF - TOTAL-Scientific and Technical Center Jean Féger
Abstract : Understanding elastic properties of rocks is a scientific challenge due to the complexity of their microstructures. This study combines the numerical tools to generate models for internal geometry of pores with the 3D printing technology in order to control the shape and size of pores as well as the distribution of pore's network inside the sample. Accuracy of the printing has been assessed by optical microscopy. The numerical and experimental tests conducted on generated microstruc-tures show that the elastic properties are independent of the size of the pore. In turn, the shape of the pore has a strong effect on the elastic properties. This study shows that in case of multiple pore types, the ones with small aspect ratios have a strong impact though of minor volume fraction. The methodology that is developped can be extended to investigate the influence of more parameters in case of connected porosity and tests theories that have been proposed to link physical properties of reservoir rocks to their internal geometry.
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Othmane Zerhouni, Maria-Gabriella Tarantino, Kostas Danas, Fei Hong. Influence of the internal geometry on the elastic properties of materials using 3D-printing of computer-generated random microstructures. The Society of Exploration Geophysicists 2018 International Exposition and 88th Annual Meeting (SEG 2018), Oct 2018, Anaheim, CA, United States. ⟨10.1190/segam2018-2998182.1⟩. ⟨hal-01917370⟩

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