Innovative Pipe Coating Material and Process for High Temperature Fields

Abstract : To date, the high temperatures (above 140°C) met in some fields in, e. g. , the North Sea, impose the development of innovative corrosion protecting coatings. Thermostable products have been developed from combining a high-Tg thermoplastic and epoxyamine monomers (the latter reducing the viscosity of the former to allow processing) which, together with the associated coating process solve these services innovatively. Details of the subtleties of material choice and behavior, process engineering and how environmental issues are met are presented. Data from various long term ageing tests performed on these thermostable materials, including filled formulations, are discussed. Durability tests against sea water over 12000 hours at 160°C are followed by desorption and dynamic mechanical analysis to assess whether any irreversible degradation has occurred. Carbon steel adhesion measurements are carried out in the view of coating applications as well as in situ Tg values evaluated by impedance spectroscopy. Plasticization effect of water is discussed. In addition, impedance spectra also indicate the quality of corrosion resistance achieved under accelerated ageing conditions.
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V. Sauvant-Moynot, S. Duval, J. Grenier. Innovative Pipe Coating Material and Process for High Temperature Fields. Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles, Institut Français du Pétrole, 2002, 57 (3), pp.269-279. ⟨10.2516/ogst:2002019⟩. ⟨hal-02043943⟩

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