Evaluación De La Influencia De Las Condiciones De Fondo De Pozo En El Deterioro De Un Acero API P110, En Ambientes Simulados Del Proceso De Combustión In Situ, Por Gravimetría Y EIS

AUTOR(ES)
FONTE

Matéria (Rio J.)

DATA DE PUBLICAÇÃO

2016-09

RESUMO

ABSTRACT Given the large amount of consumption of oil as an energy source, is resulting in a diminution in the existing world oil, the exploitation of heavy oil emerges as new alternative extraction is left aside because of the difficulties associated to processing. Therefore the in situ combustion process is an extraction method that facilitates production of such oil therefore lead to increased production at the expense of an increase in costs associated with maintenance, as operational conditions promote corrosion phenomena as the different materials involved in the process, since they are exposed to atmospheres of iron Sulfide (H2S), among other gases; at elevated temperatures and pressures, which promotes corrosion phenomena Sulfide stress cracking. Additionally, the materials affected by the acidity and the amount of impurities present in the crude. Therefore the behaviour of API P110 steel exposed to heavy oil was evaluated with different sulphur contents (0.5 - 1.5 wt%), TAN (2.28 - 6.84 g KOH / g oil) at elevated temperatures (190-250 °C) and pressures (8.96x106 to 11.72x106 Pa), since these conditions may occur in the extraction process by in situ combustion downhole. It was found that the main mechanism of corrosion in these conditions is sulfidation corrosion corrosion whose main products are the FeS and iron oxide (Fe3O4).

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