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51313-02508-Mitigation of Underdeposit and Weldment Corr. with an Environmentally Acceptable Corrosion Inhibitor

Picture for Mitigation of Underdeposit and Weldment Corr. with an Environmentally Acceptable Corrosion Inhibitor
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Product Number: 51313-02508-SG
ISBN: 02508 2013 CP
Author: Alyn Jenkins
Publication Date: 2013
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The subsea flow lines of an oilfield located offshore Norway were at risk of corrosion due to several factors. Firstly the flow lines contained high levels of CO2 which resulted in general and pitting corrosion problems. In addition the oil wells produced significant amount of solids and in areas where these solids accumulate there was the potential for under corrosion to occur. Finally there was evidence that the welds within the pipeline were corroding preferentially. Therefore a corrosion inhibitor was required which could mitigate all the forms of corrosion present in the flow lines. To qualify an inhibitor for this application several environmentally acceptable corrosion inhibitors were developed. This paper details the test work performed to qualify a new corrosion inhibitor for this field. The inhibitors were evaluated in numerous tests including kettle test rotating cylinder electrode test HP autoclave under deposit corrosion tests and weldment corrosion test.

The subsea flow lines of an oilfield located offshore Norway were at risk of corrosion due to several factors. Firstly the flow lines contained high levels of CO2 which resulted in general and pitting corrosion problems. In addition the oil wells produced significant amount of solids and in areas where these solids accumulate there was the potential for under corrosion to occur. Finally there was evidence that the welds within the pipeline were corroding preferentially. Therefore a corrosion inhibitor was required which could mitigate all the forms of corrosion present in the flow lines. To qualify an inhibitor for this application several environmentally acceptable corrosion inhibitors were developed. This paper details the test work performed to qualify a new corrosion inhibitor for this field. The inhibitors were evaluated in numerous tests including kettle test rotating cylinder electrode test HP autoclave under deposit corrosion tests and weldment corrosion test.

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