Abstract:
The O&G production corrosion challenges are not static phenomena. Fluid characteristics change over time, resulting in systems becoming less predictive for corrosion mitigation programs. Thus, carrying out specific studies aimed at understanding the corrosion mechanisms is constant in this sector, especially for offshore environments. Even though, few studies of oil/water/gas mixtures in multiphase flow conditions are found in the literature. Most published works study only water and gas-phase multiphase flowing (NEŠIĆ et al., 2008)(BROWN, 2004)(LI et al., 2015)(CAI; LEE; NEŠIĆ, 2005). In this work, the main objective was to study the effect of some parameters on the corrosion in multiphase-flow conditions of carbon-steel pipelines used in the pre-salt exploration. To achieve this objective, a specific multiphase flow loop was constructed for corrosion studies. The project was designed to meet a challenge of an exploration company whose goal was to understand the corrosion induced by multiphase flow in offshore mature-well conditions. Therefore, the loop characteristics and the test matrix were established based on specific field conditions established by the company. Additionally, corrosion-erosion, autoclave emulsion tests and Rotating Cylinder Electrode (RCE) tests were performed to understand the results obtained in the multiphase loop.
Referência:
SILVA, Carlos Alberto da; ALMEIDA, Neusvaldo Lira de; PANOSSIAN, Zehbour. Multiphase flow induced corrosion: undestanding interactions between crude oils and emulsion formation. In: RIO PIPELINE CONFERENCE & EXHIBITION, 2023, Rio de Janeiro. Palestra… 11 slides.
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