FBE TEST PROTOCOL FOR TEMPERATURES UP TO 150°C

摘要

The exploration and production of deeper oilfields over the past six years has demonstrated an increase in temperature of around 40°C, raising the pipelines temperature up to 120°C. It appears that operating temperatures will continue to increase. Steel pipelines for hydrocarbon transportation have always been protected from corrosion through a coating system. Fusion bonded epoxy coatings, in combination with cathodic protection have been established as the best protective option for many years. Nowadays, failure of FBE coating systems is a fact, due to the increase in temperature of oilfields above regular operating temperatures. This work describes the analysis, selection and testing of FBE coatings as a corrosion protective system for operating with temperatures up to 150°C. Current standards do not provide testing practices for temperatures over 90 °C. A tests protocol was developed for applied film, following the guidelines of CSA Standard Z245.20-10 "External Fusion Bond epoxy coating for steel pipe", adjusting test temperature to 150 °C. A high temperature FBE coating test protocol is developed based on this investigation.