Abstract
All kinds of corrosion monitoring techniques have their own advantages and obvious disadvantages when applied in acidic oil and gas fields. According to the characteristics of various technologies, an intelligent safety monitoring system was established based on electrochemical noise probe with galvanic corrosion probe, electrochemical hydrogen permeation probe and electric resistance probe. This paper presents the development of monitoring unit, system integration, and field test and data analysis. The results demonstrate that electrochemical noise not only determines the occurrence of corrosion, but also shows the characteristic of localized corrosion clearly; electrochemical hydrogen permeation technique reveals several advantages in the monitoring progress including simplicity, high sensitivity and high reliability, while the improved electric resistance probe shows a better environmental suitability. The accuracy and reliability of corrosion monitoring has been greatly increased by this integrated technique which can achieve the consistency and complementation of much information.
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