Study of corrosion inhibition for oil and gas oilfield applications

The exploitation of deep-water hydrocarbons has gained significance due to the current expectations regarding oil and gas resources in superficial waters. The current status and the technological challenge related to pipelines, with regard to the materials, prevention and control of internal corrosion are severely corrosive hydrocarbons (H20, H2S and CO2 content), high pressures and temperatures. Thus, internal protection for pipeline steel surfaces becomes one of the critical factors for successful crude´s production and transport. One way of protecting the pipelines from corrosion is to use corrosion inhibitors. In this work, an investigation will be carried out to evaluate the corrosion susceptibility of different types of steel used for oil and gas systems immersed in brine with chloride at different pH, temperatures, and dissolved carbon dioxide, using electrochemical measurements. The effect of the addition of organic corrosion inhibitors on the corrosion rates will also be studied. Also some methodologies will be used for the characterization, including: X-ray Photoelectron Spectroscopy (XPS), Atomic Force Microscopy (AFM), Scanning Electro Microscopy (SEM) and Energy Dispersive X-ray (EDX).