NACE 61114

Abstract

<strong>Foreword</strong> <br>This technical committee report presents an overview of the various methods used in the oil and gas industry to test and mitigate underdeposit corrosion (UDC) occurring in corrosive pipeline environments when solids are present and carbon steel is used. The testing techniques are different in nature and in design and therefore assess and evaluate UDC in different ways. It is not the intent of this report to favor one method over another. The objective is to provide industry users with some tools and means from which to choose when confronted with such an issue. The choice of methods relates mainly to the type of application at hand and how well the methods apply to such situations. The user is cautioned that the testing discussed in this report may not be representative or applicable to all pipeline conditions. UDC testing under majority hydrocarbon conditions or in the presence of wax, asphaltenes, and biofilms is still in its infancy and was excluded from this report. <br>This NACE technical committee report was prepared by Task Group (TG) 380, "Underdeposit Corrosion&#226;&#8364;&#8221;Testing and Mitigation," which is administered by Specific Technology Group (STG) 61, "Inhibition&#226;&#8364;&#8221;Corrosion and Scaling," and is sponsored by STG 31, "Oil and Gas Production&#226;&#8364;&#8221;Corrosion and Scale Inhibition," and STG 60, "Corrosion Mechanisms." This report is issued by NACE International under the auspices of STG 61.