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09288 Control of Top-of-Line Corrosion in a Sour Gas Gathering Pipeline with Corrosion Inhibitors

Picture for 09288 Control of Top-of-Line Corrosion in a Sour Gas Gathering Pipeline with Corrosion Inhibitors
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Product Number: 51300-09288-SG
ISBN: 09288 2009 CP
Author: Rich Martin
Publication Date: 2009
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This paper first reviews laboratory and field investigations of top-of-line corrosion. A particular oxygen contaminated, wet gathering pipeline is described which experienced severe corrosion in the vapor zone. Pigging could not be accomplished, therefore a corrosion inhibitor with oxygen tolerance and vapor space capability was applied.

Corrosion in the line was subsequently monitored with coupons, ultrasonic thickness measurements and periodic visual inspection. Corrosion inhibitor was detected in gas samples pulled from the line. All indicators pointed to adequate corrosion control in this pipeline even though operated in the same regime as before.
This paper first reviews laboratory and field investigations of top-of-line corrosion. A particular oxygen contaminated, wet gathering pipeline is described which experienced severe corrosion in the vapor zone. Pigging could not be accomplished, therefore a corrosion inhibitor with oxygen tolerance and vapor space capability was applied.

Corrosion in the line was subsequently monitored with coupons, ultrasonic thickness measurements and periodic visual inspection. Corrosion inhibitor was detected in gas samples pulled from the line. All indicators pointed to adequate corrosion control in this pipeline even though operated in the same regime as before.
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