MATCO can help. We are an independent materials testing and corrosion engineering firm that has years of experience in all aspects of on-site and laboratory inspection and assessment of pipelines, natural gas wells and production facilities. Our team includes PhD's, registered professional engineers, and certified inspectors from a variety of technical disciplines, including petroleum engineering, corrosion, mechanical engineering, coating inspection, chemistry, metallurgy and materials science. We also have a comprehensive array of laboratory and field testing equipment, all calibrated on a routine basis in accordance with both national and international standards. This team is ready to be put to use at a moment's notice.
Corrosion of oil and gas pipelines is directly related to the internal and external (soil) conditions present for the unique location of a given pipeline, as well as to the materials of manufacturing and the quality of these materials. Pipelines in submerged conditions are subject to a greater risk of corrosion because of the continuous presence of corrosive moisture – the electrolyte necessary to have the electrochemical corrosion reaction proceed. The specific chemical composition, resistivity and redox potential of the soil/water table will determine the relative corrosivity or risk of corrosion.
In addition to the soil characteristics, it is useful to measure the electrochemical potential of the structure in the electrolyte (soil or water). This is done using methodologies developed by the underground pipeline industry and recognized by NACE International and other professional societies and regulatory organizations. The structure-to-soil potential of a buried asset can be related to the present state of corrosion, with less electronegative values of potential indicated an increasing likelihood of active corrosion. By using sacrificial (galvanic) cathodic protection or impressed cathodic protection, corrosion can be mitigated by shifting the structure-to-soil potential to more electronegative values.
Internal corrosion is most often due to microbiologically influenced corrosion (MIC) in oil transportation pipelines and storage tanks. MATCO engineers have a deep understanding of MIC and are well equipped to diagnose, monitor and resolve even the most complex of MIC conditions. Typical programs includes a site evaluation and assessment, lab testing confirmation, and development of a program that typically includes the use of biocides / inhibitors designed by MATCO’s senior corrosion engineering team.
For information about how MATCO can become your partner, contact us today.