... manuscript Corrosion Management Upstream Oil & Gas corrosion rate deaerated condition Houston reaction TSA steel steel surface aluminum deposit seawater cathodic reaction ABSTRACT Thermally sprayed aluminum (TSA) has been used in offshore oil and gas infrastructure for decades...

.... The addition of corrosion inhibitor into the acid is used to reduce the corrosive attack of acid by adsorbing themselves onto the steel surface and prevents the direct contact of acid with the steel [5]. A perusal of literature reveals that most of the organic compounds used as effective corrosion inhibitors...

... oil may poison the inhibitor 6, 10, 11 , resulting in a decrease of inhibition efficiency. At the same time, the inhibitors may change the wettability of steel surfaces 12, 13 . Clearly, the evaluation of corrosion inhibitor is very important to ensure its validity in field conditions. materials...

... of such corrosion products and their relation to general corrosion are discussed, with results suggesting the formation of a thin Fe3O4 layer at the steel surface plays a critical role in determining the resistance of the material to general corrosion, and that the nature of the brine chemistry influences...

... and possible precipitation of CaCO3 scale on the steel surface would influence the CO2 corrosion mechanism. There are only a handful of studies in the literature that address the effect of Ca2+ and/or CaCO3 scale on CO2 corrosion12 14. Such studies rely on the initial Ca2+ concentration rather than...

... gravimetric measurements. The pyridinium-type sulfonate-functionalized IL did not contribute to corrosion protection of the steel surface, while the triethylammonium-type sulfonate-functionalized IL had an inhibition efficiency of ca. 40%. Key words: corrosion inhibition, Brønsted acidic ionic liquids...

... resistance of 3Cr-N80 steel. Corrosion products formed on N80 steel surface was composed of Ca(Mg,Fe)(CO3)2 where Fe 2+ was replaced by Ca2+ and Mg2+ ions. Key words: N80 steel, 3Cr-N80 steel, CO2 corrosion, corrosion rate, corrosion films INTRODUCTION Carbon steels have been widely used in oil and gas field...

... solubility and dissociation equations, changes in the electrochemical module due to the presence of a thick and porous corrosion product layer, and consideration of an adsorption mechanism for H2CO3 at the steel surface. The comparison between experimental results and model predictions showed a good...

... concentration corrosion rate steel surface NaCl solution carbon steel decanethiol electrode Corrosion Inhibitor (Decanethiol) for Carbon Steels Exposed to Aqueous CO2 Z. Belarbi, J.M. Dominguez Olivo, F. Farelas, M. Singer, D. Young, S. Nesic Institute for Corrosion and Multiphase Technology...

.... The corrosion rate i cor is calculated by the equation of i cor = k / R p . Herein k is a constant decided on the specific condition of steel surface and the environment. It is not easy to decide k on each condition. As a monitoring method without deciding k has been demanded, CIPE (Current...

... ABSTRACT It is well known that dry abrasive blasting cannot remove salts completely and therefore, some residual salts remain on the blasted steel surface. In offshore or coastal corrosive environments, it is difficult to keep the near white metal finish and control salt on the prepared...

.... The air surrounding the specimen is then replaced by an N2-O2 gas mixture leaner or richer in O2 than air. As oxygen diffuses into or out of the specimen to accommodate to the new external O2 concentration regime, the O2 concentration at the steel surface begins to evolve toward a new terminal value...

... layer, by modifying the local environment at the steel surface. Modeling of this hypothesis is currently in progress. Key words: Micro-alloying, CO2 corrosion, Flow effect, RDE, Plain carbon steel, Cr-Mo steel. 1 Paper No. 10879 ©2018 by NACE International. Requests for permission to publish...

... gas composition (particularly CO 2 , H 2 S, and O 2 impurities), condensation rate, relative humidity, and the existence of hygroscopic salts on the steel surface. The use of volatile corrosion inhibitors (VCIs) could constitute an economic and effective black powder mitigation method. However...

... in selecting suitable parameters in industry standards. flowline corrosion riser corrosion Publication Division amplitude materials and corrosion Midstream Oil & Gas passivity critical anodic transient duration Pipeline Corrosion well integrity texas 77084 critical duration steel surface...

... and the potential was monitored. It was observed that TSA is capable of polarising the steel bar to below -800mV (Ag/AgCl) even when a damage exposing 90% of steel surface is present. However, the potential became less negative with time reaching corrosion potential values (E corr ) of steel in 35 days. Even after...

... layer manuscript materials and corrosion well integrity corrosion rate experiment specimen dissolution steel surface Effect of Pyrrhotite on Mild Steel Corrosion in Aqueous CO2 and H2S Solutions Saba Navabzadeh Esmaeely, Gheorghe Bota, Bruce Brown, Srdjan Nesic Institute for Corrosion...

... or tripods which are submerged in very corrosive seawater. For the external steel surfaces, various kinds of CP system have been installed to protect the monopiles against corrosion, but the severe corrosion risk for the internal submerged steel surfaces has been underestimated in the past because...

... flowline corrosion riser corrosion Thickness corrosion scale carbon steel corrosion product steel surface The Effect of Corrosion Product Formation Mode at the Early Stage of Sour Corrosion of Pipeline Steel Huixin Li Institute of Advanced Materials and Technology University of Science...

... high temperature corrosion salt layer steel surface salt mat NaCl- and CaCl2-Induced High Temperature Corrosion of Automotive Exhaust Components ABSTRACT The high temperature corrosion behavior of ferritic stainless steel UNS S43940 has been investigated by means of cyclic exposure tests (CETs...