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08622 Inhibition of Weld Corrosion in Flowing Brines Containing Carbon Dioxide

Picture for 08622 Inhibition of Weld Corrosion in Flowing Brines Containing Carbon Dioxide
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Product Number: 51300-08622-SG
ISBN: 08622 2008 CP
Author: Ian George Winning, Khaled Alawadhi V, Alison Chalmers, and Michael Robinson
Publication Date: 2008
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The aim of this research was to study the effectiveness of typical oilfield corrosion inhibitors in controlling internal corrosion of welded X65 pipeline steel in brines saturated with carbon dioxide at one bar pressure, under dynamic flowing conditions, at a range of temperatures. A rotating cylinder electrode (RCE) apparatus was designed to allow steel from the weld metal, heat affected zone (HAZ) and parent material to be galvanically coupled and tested in high shear stress conditions. In producing the RCE, the three regions of the weld were identified by optical metallography and samples of each were machined to produce cylindrical electrodes, which were mounted on a motor driven shaft. Electrical connections were made to the three electrodes via a high quality slip-ring assembly.
The aim of this research was to study the effectiveness of typical oilfield corrosion inhibitors in controlling internal corrosion of welded X65 pipeline steel in brines saturated with carbon dioxide at one bar pressure, under dynamic flowing conditions, at a range of temperatures. A rotating cylinder electrode (RCE) apparatus was designed to allow steel from the weld metal, heat affected zone (HAZ) and parent material to be galvanically coupled and tested in high shear stress conditions. In producing the RCE, the three regions of the weld were identified by optical metallography and samples of each were machined to produce cylindrical electrodes, which were mounted on a motor driven shaft. Electrical connections were made to the three electrodes via a high quality slip-ring assembly.
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