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51318-11295-The Impact of Biocide Choice and Dosing Strategy on Successful MIC Management under Anoxic and Flowing Conditions

Picture for The Impact of Biocide Choice and Dosing Strategy on Successful MIC Management under Anoxic and Flowing Conditions
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This benchmarking study involved both the application of biocides to reduce biofilm formation on clean carbon steel and the application of biocide to established biofilm.

Product Number: 51318-11295-SG
Author: Nora Eibergen / Philip Maun / Matthew Wier / Brittany Caldwell / Geert van der Kraan / Kenneth Wunch
Publication Date: 2018
Industry: Pipelines, Tanks, and Underground Systems
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$20.00
$20.00

Pipelines and other carbon steel assets that are exposed to water, mixed phases, or water-laden hydrocarbons are highly susceptible to microbiologically influenced corrosion (MIC). This process, caused by either direct or indirect attack of metallic iron by microorganisms, causes costly damage to carbon steel assets and, in some cases, failure of the asset altogether resulting in loss of primary containment. One approach to reduce and/or mitigate the negative impact of MIC is the implementation of an effective biocide treatment strategy.

In laboratory studies, the impact of multiple biocides and treatment strategies on MIC were evaluated. Several commonly used biocides were applied under anoxic flowing conditions to sessile organisms enriched from anoxic North Sea sediment. This benchmarking study involved both the application of biocides to reduce biofilm formation on clean carbon steel and the application of biocide to established biofilm. The impact of biocide choice and mode of application on effective microbial control and corrosion management in these studies will be discussed.

Key words: MIC, Microbiologically influenced corrosion, biocorrosion, flow loop, biocide

Pipelines and other carbon steel assets that are exposed to water, mixed phases, or water-laden hydrocarbons are highly susceptible to microbiologically influenced corrosion (MIC). This process, caused by either direct or indirect attack of metallic iron by microorganisms, causes costly damage to carbon steel assets and, in some cases, failure of the asset altogether resulting in loss of primary containment. One approach to reduce and/or mitigate the negative impact of MIC is the implementation of an effective biocide treatment strategy.

In laboratory studies, the impact of multiple biocides and treatment strategies on MIC were evaluated. Several commonly used biocides were applied under anoxic flowing conditions to sessile organisms enriched from anoxic North Sea sediment. This benchmarking study involved both the application of biocides to reduce biofilm formation on clean carbon steel and the application of biocide to established biofilm. The impact of biocide choice and mode of application on effective microbial control and corrosion management in these studies will be discussed.

Key words: MIC, Microbiologically influenced corrosion, biocorrosion, flow loop, biocide

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Picture for High Concentration Biocide Treatment of an Oil Pipeline
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51318-11616-High Concentration Biocide Treatment of an Oil Pipeline

Product Number: 51318-11616-SG
Author: Zach Broussard / Timothy J Tidwell / Renato De Paula / Victor Keasler
Publication Date: 2018
$20.00

An oil transmission pipeline in the Eagle Ford area was being treated with 150ppm of active biocide based on a five percent water hold up but good control of the microbial population was not being maintained.

 
Picture for Enhanced Biocide Treatment of Corrosive Biofilms
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51316-7279-Enhanced Biocide Treatment of Corrosive Biofilms

Product Number: 51316-7279-SG
ISBN: 7279 2016 CP
Author: Tingyue Gu
Publication Date: 2016
$20.00

Biocorrosion or microbiologically influenced corrosion (MIC) is a major problem in the oil and gas industry. Biofilms are the culprits of MIC. In this work, D-amino acids were used to enhance two biocides, alkyldimethylbenzylammonium chloride (ADBAC) and tributyl tetradecyl phosphonium chloride (TTPC), to treat a field biofilm consortium on C1018 carbon steel coupons.
Picture for Methodology for the comparative evaluation of batch biocide performance against microbial corrosion
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51316-7322-Methodology for the comparative evaluation of batch biocide performance against microbial corrosion

Product Number: 51316-7322-SG
ISBN: 7322 2016 CP
Author: Dennis Enning
Publication Date: 2016
$20.00

This study describes a laboratory test system which was specifically developed to assess the ability of biocides to lower microbial corrosion rates. It was found that the common oilfield biocides THPS and glutaraldehyde, dosed at concentrations of 300 ppm for 4 hours weekly over 5 weeks, could reduce MIC rates from 109.7 mpy to as low as 4.3 mpy
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