VM 110 13CRSS is a super martensitic OCTG steel (also called Super 13%Cr steel) for sweet wet CO2 corrosive environments. It is manufactured in accordance with latest edition of API 5CRA and ISO 13680 – PSL 1. VM 110 13CRSS offers corrosion and SSC resistance on a greater usage domain than API L80-13CR in terms of temperature, H2S and chloride contents. VM 110 13CRSS is also available with High Collapse performance (VM 110 13CRSSHC).
Finer grade selection shall take into account other parameters such as Chloride content and in-situ pH.
OCTG carbon steels are known to corrode when exposed to wet CO2 containing environments: they will suffer from various forms of corrosion such as general metal loss corrosion or localized corrosion (pitting, crevice, Mesa attack). Martensitic and Super martensitic steels have proved to be the most cost effective solution to protect against wet CO2 corrosion in oil & gas wells.
Comparison of Cost vs time for Carbon steel + inhibitors (+ workovers) and for 13%Cr steel in wet C02 well
VM 110 13CRSS is manufactured in accordance with group 1- material category 13-5-2 of the latest edition of API 5CRA and ISO 13680 – PSL 1.
VM 110 13CRSS offers corrosion and SSC resistance on a greater usage domain than API L80-13CR in terms of temperature and chloride content, as shown on the graphs below:
Corrosion resistance of Super 13Cr vs API L80-13Cr as a function of temperature and chloride content
The product is used in the following area: