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Influence of Insulation on CUI in Simulated Oil & Gas Production

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Macro and microbiological growth can have significant impacts on safe and efficient operations in oil & gas applications especially in water injection and underground storage systems. Operators must provide protection against both chemical and microbial corrosion to protect assets from degradation and failure. High density polyethylene (HDPE) coatings have been shown to provide long-term corrosion protection for salt brackish and brine piping. However HDPE is susceptible to biodegradation. This study explores the development and testing of a novel HDPE coating containing a unique blend of antimicrobial powder additive engineered to protect against common bacteria and fungi in brine water. Experiments were conducted to evaluate the biological and material performance of the coatings. Results from microbiological testing showed that coatings enhanced with the material additive resisted and deactivated over 70% of bacteria present in the brine water and over 90% of the harmful fungi which causes fouling in pipelines. Testing results indicated that the additive has no significant impact on the mechanical properties or corrosion resistance of the HDPE lining. These results are significant because the additive protects against harmful microbes while maintaining properties of the HDPE system. This technology provides transformative change in prevention methods for on-shore brine pipeline applications.

Product Number: 51319-12881-SG
Author: Emily Hunt
Publication Date: 2019
$0.00
$20.00
$20.00
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Picture for Solution to Corrosion Under Insulation (CUI) with Three Layered CUI Control and CUI Warning Systems
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51314-4079-Solution to Corrosion Under Insulation (CUI) with Three Layered CUI Control and CUI Warning Systems

Product Number: 51314-4079-SG
ISBN: 4079 2014 CP
Author: Miki Funahashi
Publication Date: 2014
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Picture for THE INFLUENCE OF INSULATION MATERIALS ON CORROSION UNDER INSULATION
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THE INFLUENCE OF INSULATION MATERIALS ON CORROSION UNDER INSULATION

Product Number: MPWT19-15362
Author: John Williams, Owen Evans
Publication Date: 2019
$0.00

The designer of industrial equipment and piping has three weapons in the fight against corrosion
under insulation (CUI). The first and primary defense against CUI is a high quality, immersion
grade coating. The second is a properly designed and installed weather barrier jacketing. The third
and, arguably, least understood element is the choice of insulation material. This paper will explore
the ways in which insulation materials influence CUI behavior, presenting results from both
laboratory and field-testing on seven industrial insulation materials and one composite system.
The materials tested were calcium silicate, expanded perlite, cellular glass, mineral wool (both
regular and water-repellent grade), and two types of flexible aerogel blanket material -Pyrogel
XT and Cryogel Z
Picture for Factors for Selecting Thermal Insulation Materials to Prevent Corrosion Under Insulation
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Factors for Selecting Thermal Insulation Materials to Prevent Corrosion Under Insulation

Product Number: 51319-12952-SG
Author: Kentaro Mizushima
Publication Date: 2019
$20.00

Many types of thermal insulation materials are used in oil and gas plant facilities. Recently new materials have been developed to prevent corrosion under insulation (CUI) and even the conventional materials have been improved their properties to provide better protection.When designing a plant measures to prevent CUI are studied when verifying the materials of construction determining the protective coatings systems and selecting thermal insulation and jacketing materials. Measures to prevent CUI should not be considered separately for these but rather together as a total system. Recently though while protective coatings have been studied by users coating manufacturers and independent organizations such as testing laboratories engineering firms and consultants there has been little investigation of the ability of thermal insulation materials themselves to prevent CUI.In this study the ability of various thermal insulation materials to prevent CUI in a simulated severely corrosive environment were examined. The factors influencing CUI prevention or aggravation were identified based on which it was recommended that these factors be considered when selecting thermal insulation materials during the design of a plant. As a summary of this study experiences of design of plants and related other CUI studies effective ideas relating to protective coatings thermal insulation and jacketing materials for preventing CUI will be shared.
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