Abstract
Corrosion depends on a given environment and the metal type. The presence of carbon dioxide (CO2), hydrogen-sulphide (H2S) and free water in the production fluid can cause severe corrosion problems in oil and gas pipelines. Two types of corrosions may occur in the oil and gas pipeline system when the presence of CO2 and H2S in the hydrocarbons fluid: sour corrosion and sweet corrosion. The purpose of this chapter is to develop corrosion defect prediction models and the reliability based design and re-qualification criteria for assessing corroded pipelines. This evaluation focuses on corrosion defect growth; check burst strength; check bending capacity and so on. The corrosion products deposited on the steel surface is related to sufficient protection. In this chapter, corrosion defects inspection, calculating method of corrosion defect growth, corrosion predictions are discussed.
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