CORROSION INHIBITOR SELECTION - FEEDBACK FROM THE FIELD

摘要

This paper deals with the practical perspectives of corrosion inhibition in production operations. To this end examples of inhibition of sweet gas wells, wet gas pipelines and flowlines, and oil pipelines are discussed and challenges are identified. It is shown that a number of common problems can be avoided by proper inhibitor selection and qualification tests. Other key factors of equal importance are a proper economic evaluation to support the choice of corrosion inhibition as the first line of defense and a careful design of the system, including verification of the corrosion mechanism and injection hardware design. It is pointed out that inhibition will be successful only if the operators are engaged at an early stage and the procedures are included in the maintenance plan.