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Título:
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Diffusion-reaction modelling of the degradation of oil-well cement exposed to carbonated brine
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Autor/a:
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Martínez Estévez, Ariadna; Liaudat, Joaquín; López Garello, Carlos María; Carol, Ignacio
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Otros autores:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental; Universitat Politècnica de Catalunya. MECMAT - Mecànica de Materials |
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Abstract:
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The essential aspects of a diffusion-reaction model in development for the degradation process of oil-well cement exposed to carbonated brine are presented in this paper. The formulation consists of two main diffusion/reaction field equations for the concentrations of aqueous calcium and carbon species in the hardened cement paste pore solution, complemented by a number of chemical kinetics and chemical equilibrium equations. The volume fraction distribution of the solid constituents of the hardened cement paste and the reaction products evolve with the progress of the reaction, determining the diffusivity properties of the material. A sensitivity analysis of some parameters of the model is presented to illustrate the capabilities to reproduce realistically some aspects of the degradation process. |
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Materia(s):
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-Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
-Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Degradació ambiental::Contaminació atmosfèrica
-Carbon sequestration
-Cement--Deterioration
-Carbon sequestration
-Oil-well cement
-CO2
-Carbonic acid
-Chemical model
-Finite Element Method
-Ciment -- Deterioració
-Anhídrid carbònic -- Aspectes ambientals |
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Derechos:
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Tipo de documento:
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Artículo - Versión publicada
Objeto de conferencia |
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