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Effect of Fluids and Frequencies on Properties Elastics of sandstones and carbonates.

Abstract : Seismics or Seismology are powerful tools to investigate Earth's crust. However, both rely on seismic waves that travelled through fluid-saturated sedimentary layers. This work, mainly experimental, aims at understanding the static and dynamic effects of the saturating fluid on the elastic response of clastic rocks.In this framework, two specific studies are emphasized:(i) the rock-fluid physico-chemical interaction, often addressed as the "shear weakening" effect, thought to affect the rock overall elastic response; and (ii) the rock-fluid mechanical interaction, addressed as "frequency effect", thought to induce a dependence of elastic properties to the measuring frequency.Two main rock types are investigated: Sandstone and Limestone. All rock samples are chosen to be isotropic and composed of a dominant mineral content, i.e. quartz for sandstone and calcite for limestone.
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  • HAL Id : tel-02295557, version 1



Lucas Pimienta. Effect of Fluids and Frequencies on Properties Elastics of sandstones and carbonates.. Other [q-bio.OT]. Ecole normale supérieure - ENS PARIS, 2015. English. ⟨NNT : 2015ENSU0002⟩. ⟨tel-02295557⟩



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