It has been important for the oil industry to establish reliable test method(s) for qualification and safe utilization of subsea pipelines and components made from stainless steels. This paper describes a method that has been developed through a JIP executed with support from leading oil companies and meterial suppliers.p
Results here of an effort to identify a potentiodynamic means of inducing corrosion in laser-etched areas of stainless steel tools. The electrochemical technique should be able to distinguish between “good” and “bad” etches relatively quickly so that it may be used to help refine the laser etch process, and ultimately assist in quality assurance.
Field experience was studied to identify the best solutions to Localized corrosion of 316 stainless steel instrument and chemical injection tubing in marine environment. Laboratory tests and exposure in marine environment of samples have been used to evaluate possible alternative materials and protective chemicals.
An advanced grade of super-austenitic stainless steel with a reduced content of nickel offers a significant economic advantage over nickel-base CRA’s. As the alloy is readily fabricated by conventional techniques, it is an excellent candidate for a variety of applications in the chemical, petrochemical, mining, oil and gas, and refining industries.
In this work, the open circuit potential of different stainless steel grades as well as nickel based and copper based alloys has been systematically measured in seawater under different experimental conditions. In particular the effect of temperature, oxygen content and chlorination level have been studied.