Compréhension des écoulements biphasiques stables et instables de fluides à seuil lors du forage d’un puits pétrolier

Abstract : This thesis draws its motivation from the petroleum industry, and more particularly from the phase of primary cementation of the oil wells. The work consists of an experimental study of the biphasic, stable and unstable flows, fluids were used during this operation. In the unstable cases, the instability of Rayleigh-Taylor, which may develop when a heavy fluid rests on a light fluid under fields’ gravitaire for example, is one of the instabilities responsible for phenomena of mixture observed between the uncalled-for fluids, in particular the mud and the cement. It is studied in this work in the case of model fluids, in threshold, resuming the same rheologic behavior as the oil fluids, at the same time from a qualitative and quantitative point of view
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Ilham Maimouni. Compréhension des écoulements biphasiques stables et instables de fluides à seuil lors du forage d’un puits pétrolier. Mécanique des matériaux [physics.class-ph]. Université Paris-Est, 2017. Français. ⟨NNT : 2017PESC1139⟩. ⟨tel-01712019⟩

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