Many gas fields contain dangerous levels of hydrogen sulfide gas – odorless, colorless, toxic and corrosive. The Shah gas reservoir in Abu Dhabi contains 23% of the gas, as well as 10% CO2 requiring corrosion resistant piping from the well head to a processing facility.
One solution to transporting so called “sour” gas is to use standard steel piping internally lined with a corrosion resistant alloy (CRA). This is usually Inconel 625 alloy (NiCrMo-3). The pipe can be lined with a tube of this material which is inserted into the id and mechanically expanded. Alternately, the id can be clad with a weld overlay.