The Effect of Microstructure and Chromium Alloying Content to the Corrosion Resistance of Low-Alloy Steel Well Tubing in Seawater Injection Service

摘要: Failure analysis of corroded well tubing steel grade L-80, removed from three separate seawater injection wells on two their operated fields has revealed the importance microstructure and alloying chemistry. In first well, marked differences in severity corrosion damage between individual joints could be observed. other it was observed that one had suffered severe damage, whereas no damage. This despite fact these were completed within months another received through same topside deaeration treatment facility. Analysis steels chemistry containing a mixed tempered martensite bainite Similarly, with martensitic without chromium addition ( 0.5 wt% little or These findings stress significant role play enhancing resistance performancemore » L-8O for service.« less