Alternative corrosion inhibitor formulation for carbon steel in CO2-saturated brine solution under high turbulent flow condition for use in oil and gas transportation pipelines

A benzimidazole derivative (BPMB) was tested as inhibitor for carbon steel in CO2-saturated brine, singly (under static and turbulent conditions) and formulated with mercaptoalcohol (ME) (under turbulence). Potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), ATR-IR, SEM, XRD and AFM were employed for the study. Turbulence at short immersion time (1 h) decreased BPMB corrosion inhibition efficiency. However,...