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51312-01196-Tank Reactor Studies of Biocide Performance and Mitigation of Dead-leg Corrosion

Picture for Tank Reactor Studies of Biocide Performance and Mitigation of Dead-leg Corrosion
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Product Number: 51312-01196-SG
ISBN: 01196 2012 CP
Author: Wayne Dickinson
Publication Date: 2012
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Preservation of petroleum quality and control of microbiologically influenced corrosion (MIC) in storage tanks pipelines and deadlegs are critical issues in the petroleum production industry. A model tank/deadleg system has been developed and used to evaluate biocide efficacy in controlling microbiological growth and MIC in these systems. The model system employs a glass tank reactor containing a dodecane/aqueous phase solution in combination with a 12-position modified Robbins device which serves as the deadleg. The Robbins device includes an integral electrode system to enable continuous corrosion monitoring. In tests using an oilfield consortia of sulfate-reducing acid-producing and general heterotrophic bacteria a long-acting biocide has been shown to effectively control growth of planktonic and sessile bacteria both in the tank and the deadleg segment. The biocide was able to maintain greater than a four-log reduction in viable bacteria while substantially reducing the risk of MIC on carbon steel surfaces. KEYWORDS: Biocide biofilm corrosion MIC storage tank deadleg pipeline electrochemical oilfield consortia Robbins device
Preservation of petroleum quality and control of microbiologically influenced corrosion (MIC) in storage tanks pipelines and deadlegs are critical issues in the petroleum production industry. A model tank/deadleg system has been developed and used to evaluate biocide efficacy in controlling microbiological growth and MIC in these systems. The model system employs a glass tank reactor containing a dodecane/aqueous phase solution in combination with a 12-position modified Robbins device which serves as the deadleg. The Robbins device includes an integral electrode system to enable continuous corrosion monitoring. In tests using an oilfield consortia of sulfate-reducing acid-producing and general heterotrophic bacteria a long-acting biocide has been shown to effectively control growth of planktonic and sessile bacteria both in the tank and the deadleg segment. The biocide was able to maintain greater than a four-log reduction in viable bacteria while substantially reducing the risk of MIC on carbon steel surfaces. KEYWORDS: Biocide biofilm corrosion MIC storage tank deadleg pipeline electrochemical oilfield consortia Robbins device
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