Production, Injection and Flow of Petroleum with High Levels of CO₂: Operational and Flow Assurance Aspects

Abstract:

Petroleum production always comes accompanied by some contaminants, including CO₂. Recent pre-salt exploration in Brazil indicates significant carbon dioxide (CO₂) concentration levels. Whereas in post-salt areas a ratio of 1 to 2% in CO₂ concentration was observed, in the pre-salt area this molar ratio increased to 15 to 20% in relation to the gas phase, and were even higher in some cases. Several challenges have emerged in the production, treatment and disposal of oil with such high levels of CO₂. The aim of this study is to show the management of CO₂ in a pre-salt producing platform whose CO₂ content is about 18% molar in the gas phase. The focus is on the operational aspects of daily production, where theoretical analyses are compared with the data observed in the field. Scenarios of production, injection, treatment and export are presented with emphasis on the aspects of flow assurance, the characterization of fluids, the integration of the injection-production-export system, and the dilution of CO₂.

• Periodical: Applied Mechanics and Materials (Volume 830)
• Pages: 78-84
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.830.78
• Online since: March 2016
• Authors: Ivanilto Andreolli*, Luciene de Arruda Bernardo
• Keywords: CO₂, Oil Flow, Petroleum, Pre-Salt, Properties

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