- Title
- Long-term under-deposit corrosion of carbon steel pipelines under stagnant seawater
- Creator
- Wang, Xiang; Melchers, Robert E.
- Relation
- 26th (2016) International Ocean and Polar Engineering Conference . Proceedings of the 26th (2016) International Ocean and Polar Engineering Conference, Volume 4 (Rhodes, Greece 26 June - 1 July, 2016) p. 386-393
- Relation
- http://www.isope.org/publications/proceedings/ISOPE/ISOPE%202016/index.htm
- Publisher
- International Society of Offshore and Polar Engineers (ISOPE)
- Resource Type
- conference paper
- Date
- 2016
- Description
- The severe channelling corrosion of offshore water injection pipelines is a major threat for the oil industry. However, no agreed mechanism is available at present. This paper reports a long-term experimental study aiming to investigate the potentially contributing factors including the presence of deposits, microbiological activities and nitrate addition on the formation of channelling corrosion. The results show that the steel specimens covered with deposits are more severely corroded by pitting corrosion than those without deposits. Nitrate addition enhanced the propagation of pitting corrosion along the boundaries of deposits. The synergistic effect of microbiologically influenced corrosion (MIC) and under-deposit corrosion (UDC) is proposed to cause severe localized corrosion. The findings provide healthy suggestions for pipeline integrity management of offshore oil industry.
- Subject
- water injection pipeline; channelling corrosion; under-deposit corrosion; microbiologically influenced corrosion; nitrate treatment
- Identifier
- http://hdl.handle.net/1959.13/1344585
- Identifier
- uon:29458
- Identifier
- ISBN:9781880653883
- Language
- eng
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