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51317--9519-Development of Application Friendly Products for Wet Gas Corrosion Inhibition

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An operator in North America discovered an internal corrosion failure in a wet gas system directly below the point of injection of a water-soluble corrosion inhibitor (CI). Tests using low shear rotating cage autoclaves and a dual autoclave system were performed as a corrosion screening method.

Product Number: 51317--9519-SG
ISBN: 9519 2017 CP
Author: Jeffery Clark
Publication Date: 2017
Industry: Chemical Inhibitors
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$20.00
$20.00

An operator in North America discovered an internal corrosion failure in a wet gas system directly below the point of injection of a water soluble corrosion inhibitor (CI). Upon further investigation an inconsistency was found between the standard laboratory based carbon steel immersion corrosion rate of the neat water-soluble corrosion inhibitor and the observed corrosion rate based on the field time to failure. For this reason studies were conducted to uncover the discrepancy between the laboratory compatibility test and the observed field corrosion rate in a wet gas system. Tests using low shear rotating cage autoclaves were performed as a corrosion screening method of the neat CI. Additionally it was desired to ensure that the product would travel with the gas and provide corrosion inhibition throughout the entire system. For this reason an additional study was conducted using a dual autoclave system to study the ability of the product to travel with a stream of gas effectively inhibiting the entire gas system. Using these findings from the corrosivity evaluation and the CI transport studies criteria for CI qualification in gas systems are recommended as best practices.

Key words: Wet Gas, Corrosion Inhibitor Qualification, Corrosion Rate, Immersion Test, Neat Chemical Compatibility

 

An operator in North America discovered an internal corrosion failure in a wet gas system directly below the point of injection of a water soluble corrosion inhibitor (CI). Upon further investigation an inconsistency was found between the standard laboratory based carbon steel immersion corrosion rate of the neat water-soluble corrosion inhibitor and the observed corrosion rate based on the field time to failure. For this reason studies were conducted to uncover the discrepancy between the laboratory compatibility test and the observed field corrosion rate in a wet gas system. Tests using low shear rotating cage autoclaves were performed as a corrosion screening method of the neat CI. Additionally it was desired to ensure that the product would travel with the gas and provide corrosion inhibition throughout the entire system. For this reason an additional study was conducted using a dual autoclave system to study the ability of the product to travel with a stream of gas effectively inhibiting the entire gas system. Using these findings from the corrosivity evaluation and the CI transport studies criteria for CI qualification in gas systems are recommended as best practices.

Key words: Wet Gas, Corrosion Inhibitor Qualification, Corrosion Rate, Immersion Test, Neat Chemical Compatibility

 

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Guidelines for Corrosion Inhibitor Selection for Oil and Gas Production

Product Number: 51317--8842-SG
ISBN: 8842 2017 CP
Author: Johannes Sonke
Publication Date: 2017
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Recommended corrosion inhibitor (CI) testing methods and interpretation to assure proper execution of a test program. Associated guidance for CI test program definition testing and management to ensure and improve the integrity of carbon steels applications in our Industry.
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51317--9780-Development of Test Methods and Factors for Evaluation of Oilfield Corrosion Inhibitors at High Temp

Product Number: 51317--9780-SG
ISBN: 9780 2017 CP
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Publication Date: 2017
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Evaluation of corrosion inhibitors for high temperature (HT) upstream oilfield applications can be challenging. A series of laboratory testing methodologies were conducted to further elucidate the factors which affect laboratory corrosion inhibitor performance in high temperature conditions.
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51317--9527-Application of Encapsulated Scale Inhibitors - Understanding the Field Success Factors

Product Number: 51317--9527-SG
ISBN: 9527 2017 CP
Author: Mike Jackson
Publication Date: 2017
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This product slowly dissolves for long term scale/corrosion protection. This paper describes the chemical management system that reviewed: statistical interpretation of the results, laboratory methodologies, software simulations to calculate (a) the amount of encapsulated materials (b) frequency of treatment, (c) the economic analysis.

 
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