Types of Pipeline in Oil & Gas Industry: Injection lines: Pipelines injecting water / steam / polymer / gas into the wells to improve the lift. Flow lines: Pipelines from the well head to the nearest processing facility. Trunk lines / Inter field lines: Pipelines between two processing facilities or from pig trap to pig trap or from block valve
The corrosion under insulation (CUI) war has been fought for many years in the petrochemical industry. The corrosion processes are well understood but yet CUI often goes undetected until the damage is significant which may lead to catastrophic failures, e.g. on equipment operating under high pressure. CUI May occur on: Carbon steel (general/localised corrosion) Stainless steel (localised corrosion/stress corrosion