Comparative tests of commercially available corrosion inhibitors revealed that a new corrosion inhibitor, IMP-ICCA-9710, presented a higher protection efficiency in corrosion protection. Inhibitors were evaluated in rust, electrical resistance probe, bottle, and dynamcis circuit (loop) tests; in the latter one, electrochemical and weight loss techniques were used, observing a good correlation in both cases. The IMP-ICCA-9710 inhibitor turned out to be excellent for pipeline protection against corrosive agents in crude oil, displaying a protective film that adheres to the metal surface for long periods. The inhibitor is an imidazoline type and dispersable in water and soluble in hydrocarbons, thus permitting protection of pipes in stratified flows. Availability of the inhibitor comes during a time of increased processing of heavier crudes that present a higher content of salts, sulfur, and clays, for example. Water contact requires high-efficiency corrosion inhibitors that can achieve less than 2 mpy (mils/year) corrosion rate in stratified or annular flow.
Tests confirm effectiveness of new inhibitor for pipeline internal corrosion
Tests bestätigen die Effektivität eines neuen Inhibitors für die Pipelinekorrosion
Oil and Gas Journal ; 100 , 24 ; 66-70
2002
5 Seiten, 7 Bilder, 4 Tabellen, 13 Quellen
Aufsatz (Zeitschrift)
Englisch
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