Corrosion rate prediction for mid steel pipeline in multiphase flow


The determination of corrosion rates in the upstream, midstream and downstream step is among one of the biggest challenges for oil and gas industry. In this scenario, defining the degree of severity of each of the data system variables becomes of fundamental importance for establishing reliable criteria for selecting materials for industry application. Therefore, to improve the understanding of the corrosion study influenced by multiphase flow, a testing loop was designed and assembled at the Corrosion and Protection Laboratory of the Institute for Technological Research, in which API X80 steel coupons were positioned in locations with a 0º and 45º inclinations. Tests were conducted by varying the partial pressure of the gaseous phase containing blends of CO2 and H2S with N2 balance, mixed with the liquid phase containing light oil and heavy oil in water with salinity (NaCl) simulating oil well conditions with 80 % water cut. The main objective of this work is to establish model that can predict the corrosion rate in conditions close to those obtained experimentally.

SILVA, Carlos Alberto da; PEREIRA, H.B.; TAQUEDA, M.E.S.; PANOSSIAN, Zehbour. Corrosion rate prediction for mid steel pipeline in multiphase flow. In: INTERNATIONAL CORROSION CONGRESS, 21., AND THE INTERNATIONAL CORROSION MEETING, 8., 2021, São Paulo. (on-line). Proceedings… 11p.

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