Diffusion-reaction modelling of the degradation of oil-well cement exposed to carbonated brine

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dc.contributor.authorMartínez, A.
dc.contributor.authorLlaudat, J.
dc.contributor.authorLópez, C.M.
dc.contributor.authorCarol, Ignacio
dc.date.accessioned2020-03-23T16:59:02Z
dc.date.available2020-03-23T16:59:02Z
dc.date.issued2017
dc.description.abstractThe 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.
dc.description.abstractThe 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.
dc.format.extent11 p.
dc.identifier.isbn978-84-946909-6-9
dc.identifier.urihttps://hdl.handle.net/2117/180961
dc.language.isoeng
dc.publisherCIMNE
dc.rights.accessOpen Access
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits
dc.subject.lcshFinite element method
dc.subject.lcshPlasticity -- Mathematical models
dc.subject.lemacElements finits, Mètode dels
dc.subject.lemacPlasticitat -- Models matemàtics
dc.subject.lemacPlasticitat
dc.subject.otherCarbon sequestration, Oil-well cement, CO2, Carbonic acid, Chemical model, Finite Element Method
dc.titleDiffusion-reaction modelling of the degradation of oil-well cement exposed to carbonated brine
dc.typeConference report
dspace.entity.typePublication
local.citation.contributorCOMPLAS XIV
local.citation.endingPage635
local.citation.publicationNameCOMPLAS XIV : proceedings of the XIV International Conference on Computational Plasticity : fundamentals and applications
local.citation.startingPage625

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XIV International Conference on Computational Plasticity: fundamentals and applications (COMPLAS 2017), Barcelona, 5-7 September, 2017