Abstract
In the oil fields of North District in Venezuela the high oil temperature (up to 150 °C) has an impact in the performance of the pipeline coating. Internal and external corrosion are the frequent problems in these flowline systems. One of the possible solutions to mitigate the external pipeline corrosion is the use of liquid epoxy coatings. The main purpose of this paper is to present one possible solution to the external corrosion of the flowline system based in the use of liquid resins as a method to control external corrosion. In this study two different liquids epoxy coatings systems (A and B) were used. Since no international standard test methods are available to qualify such a high temperature coating systems, we just used some standard test methods developed for lower service temperatures: Impact test, Aging test, Holidays test, Adhesion test, Abrasion test, and Cathodic Disbonding Test (CDT) techniques were performed in order to evaluate their corrosion control properties. The results indicate that the organic coating B may be used to control external corrosion in flowlines up to 150 °C. Nevertheless, additional tests should be conducted to confirm our initial assessment.
