Some Venezuelan crude oils have shown exceptional inhibition of sulfide stress corrosion cracking susceptibility and general corrosion in carbon steels, even up to 99 % water cut. The inhibition mechanism of a specific crude oil was studied and the effect of saturate, aromatic and resin fractions separated from the crude oil was evaluated. Results from electrochemical impedance spectroscopy, complemented with chemical analysis of electrode surface, corrosion products and crude oil fractions were consistent with an adsorption model for corrosion inhibition.

Subject
Sulfur, Chemical compounds, Electrochemical impedance spectroscopy, Crude oil inhibition, Steel surfaces, Hydrogen permeation, Corrosion rate, Oils, Corrosion products, Sodium chloride solution, Surface analysis, Crude, Resins
Keywords:
crude oil inhibition, corrosion inhibition, electrochemical impedance spectroscopy, hydrogen permeation, CO2 Corrosion, SARA analysis, Saturate, Aromatic, Resin
© 2001 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2001
Association for Materials Protection and Performance (AMPP)
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