The asset integrity of a dense phase, super critical CO2 (scCO2) production system is critical to efficient, safe, cost effective operation. Until recently these assets were managed using carbon steel lined with a thick, presumably resilient polymer. However, these polymer lined pipes pose a significant problem in terms of cracking. Corrosion behind the liner was causing a hydrogen cracking issue that was difficult to mitigate. Introduction of a specially designed scCO2 corrosion inhibitor has shown that bare carbon steel can be protected against corrosion in these harsh conditions. This new method of asset management enables more efficient, less costly, and safer operation for the operator. This paper shows data from a field trial strongly supporting the advantageous use of this new technology.

Subject
Water, Corrosion rate, Mass loss, Iron, Dosages, Manganese, Corrosion inhibitors, Wall thickness, High density polyethylene, Oxygen, Carbon steel, Corrosion coupons, Electrical resistance probes
Keywords:
supercritical CO2, corrosion inhibition, mild steel, field trial, low capital cost
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2022
Association for Materials Protection and Performance (AMPP)
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