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A novel evaluation technique, based on an artificial pit electrode, has been developed for inhibitor studies. The first example is of three generic inhibitors, against localised corrosion. The second is of three industrial inhibitors against existing localised corrosion on a north sea production platform
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The study evaluated the effect of pH buffer on corrosion control of steel materials at elevated temperatures. Laboratory results of pH buffer in sodium chloride, potassium chloride, sodium bromide and sodium chloride/sodium bromide brines, Field case histories for buffered brine packer fluids in high-temperature, high-pressure wells.
HISTORICAL DOCUMENT. This Technical Committee Report establishes the pertinent parameters to be observed and/or controlled during laboratory and field evaluation of corrosion inhibitors for the purpose of establishing a common baseline for the comparison of the results from such evaluations.
Hydrogen Induced Cracking (HIC) can be a major issue for line pipe exposed to sour environments. In this study, influence of the test solutions on HIC evaluation was investigated from the view point of corrosion. Electrochemical measurements were employed to compare corrosion behavior of line pipe steels between the 0.93N acetate buffer solution and the conventional 0.05N acetate solution.
Biocides and corrosion inhibitors can decrease corrosion in stagnant and flowing systems. We used 1 ml syringe columns packed with 60 carbon steel beads (55 mg each), which were continuously injected with the effluent of an sulfur reducing bacteria continuous culture chemostat, to monitor corrosion under flow conditions.
The performance and relative importance of a recent testing program for corrosion inhibition and other performance parameters using documented test methods.
Development of a high efficiency acid for scale removal that is compatible with 3% and 13% Cr alloys at elevated temperatures, with low general corrosion rates and no pitting.
This paper discusses how precipitation of scales and corrosion products on the pipe surface along with other influencing factors contributed to the initiation of pits and finally failure of a wet gas pipeline in a sweet gas field, south of Iran.
This paper describes corrosion inhibitor tests that were carried out at different temperatures and interpreted using Langmuir adsorption and desorption.
Two benchmark experiments were performed by NASA and CERL. The first was performed in 1998 at the NASA KSC Corrosion Technology Laboratory and the second in 2007 in Okinawa, Japan under the leadership of CERL.
UNS R56404Titanium exposure to warm, naturally-aerated, dilute, HF-containing, fresh acid mixtures does result in unacceptable, elevated etch rates. Several common inorganic salts such as aluminum, molybdate, and/or borate salts, inhibit this attack.
Three brands of oil-soluble water-dispersible inhibitors were evaluated with the rotating cage autoclave (RCA). Some inhibitors showed enough efficiency at high rotating speed but the others require more dosage to maintain the same result.