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07511 Mitigation of Microbiologically Influenced Corrosion in Water Injection

Product Number: 51300-07511-SG
ISBN: 07511 2007 CP
Author: Stephen Maxwell, Mark Berry, and Laid Latifi
Publication Date: 2007
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In 1987, a corrosion review of oilfield flowline and pipeline networks in the United Arab Emirates concluded that pitting corrosion had occurred and that Microbiologically Influenced Corrosion (MIC) was a possible contributor to the corrosion observed. In response to this finding, a comprehensive MIC mitigation and monitoring strategy was put in place. The strategy covered both the production pipelines and also the seawater injection flowlines. For almost 20 years, the high rates of corrosion initially determined have been controlled to acceptable levels and the pipelines and flowlines continue to meet operational performance specifications. In particular, the control of MIC groove corrosion in subsea water injection flowlines is highlighted, given the frequency of reports of failures due to grooves in other seawater injection flowlines around the world. Chemical biocides have been applied to control bacterial growth and activity and regular cleaning pigs introduced to minimise deposits.

In 1987, a corrosion review of oilfield flowline and pipeline networks in the United Arab Emirates concluded that pitting corrosion had occurred and that Microbiologically Influenced Corrosion (MIC) was a possible contributor to the corrosion observed. In response to this finding, a comprehensive MIC mitigation and monitoring strategy was put in place. The strategy covered both the production pipelines and also the seawater injection flowlines. For almost 20 years, the high rates of corrosion initially determined have been controlled to acceptable levels and the pipelines and flowlines continue to meet operational performance specifications. In particular, the control of MIC groove corrosion in subsea water injection flowlines is highlighted, given the frequency of reports of failures due to grooves in other seawater injection flowlines around the world. Chemical biocides have been applied to control bacterial growth and activity and regular cleaning pigs introduced to minimise deposits.

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