Etude de la stabilité des asphaltènes dans le pétrole brut : choix de dispersants et le mécanisme d'action

Abstract : The precipitation of asphaltenes during oil extraction plug up the well bore and causes serious damages diminishing the oil productivity. To prevent asphaltene precipitation additives are injected in the well bore to stopping aggregation. The objective of our study was to synthesis and to test the efficiency of a new family of flocculation inhibition based on the ionic liquids containing an imidazolium cation. The flocculation test were carried out with different experimental techniques and it was shown that certain of these molecules are very efficient. An efficient dispersant should delay the flocculation process and and limit the size of the flocculating flocs. Thus, in flocculating fluids, flocs are maintained in suspension and do not hinder the crude oil flux.
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Malika Boukherissa. Etude de la stabilité des asphaltènes dans le pétrole brut : choix de dispersants et le mécanisme d'action. Autre. Université Paul Verlaine - Metz, 2008. Français. ⟨NNT : 2008METZ026S⟩. ⟨tel-01752594⟩

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