Material Selection and Corrosion Control for Topside Process and Utility Piping and Equipment

摘要

This paper gives guidelines for the material selection and corrosion control philosophies for topside process (multiphase/crude, gas, and produced water) and utility (raw seawater, de-aerated seawater, chemical injection, etc) piping and equipment. For process piping and equipment, the paper discusses CO_2 internal corrosion predictions on carbon steel, as well as pitting and chloride stress cracking of corrosion resistant alloys due to high chloride contents in the produced water. For the utility systems, the paper discusses the corrosivity of the internal fluids and establishes suitable materials. The paper also addresses external corrosion control strategies based on using high durability painting systems supported by adequate surface preparation requirements.