Corrosion of pipeline gathering systems

[deancdn]

Hello:

I just have a quick question regarding natural gas pipelines in gathering systems.

If the gas is being separated at the well site and transported through the pipeline with the assumption that there will be some condensed water. If the gas has H2S, would this provide a condition where corrosion will be a problem? I understand that without separation and free water/formation water in the pipeline will be a corrosion concern.

Thanks for the help.

Dean

 

[stanweld]

Both sweet (CO2) and/or sour (H2S) corrosion can be experienced in gas gathering systems in wet service. Corrosion can be quite severe or slight based on water content, temperature, pressure and %CO2 and/or %H2S. I have specified carbon steels, carbon steels with corrosion inhibitors, stainless steels, duplex stainless steels and nickel base alloys depending stream corrosivity.