The corrosive effects of iron monosulfide deposited on carbon steel surfaces were investigated in autoclave experiments. The H2S and CO2 partial pressures were 1 to 20 bar. Temperatures were 10-120 °C. The test solutions consisted of high-salinity brine and low-salinity condensed water. Typical duration was 14 days. Weight loss and localized corrosion data were obtained.
This study describes a laboratory test system which was specifically developed to assess the ability of biocides to lower microbial corrosion rates. It was found that the common oilfield biocides THPS and glutaraldehyde, dosed at concentrations of 300 ppm for 4 hours weekly over 5 weeks, could reduce MIC rates from 109.7 mpy to as low as 4.3 mpy
Traditional internal lining schemes for the storage/transport of crude oil & refined fuels may no longer be appropriate. The aggressive nature of crude oil (high temp. & more sour), high purity refined products & increased use of biofuels demand better linings & more certain test results. The focus of this paper is to review the trends in test methodology from the early 1990’s to present.