Capturing and sequestrating CO₂ in hydrocarbon reservoirs is becoming a central element of operator’s strategies to reduce their carbon footprint and meet the net zero goals of the oil and gas industry. This is driving numerous efforts among the major subsea players to develop and qualify the required technologies for underwater applications. Since 2017 OneSubsea has conducted significant efforts to develop, manufacture, and qualify a deep water 6MW CO₂ subsea pump solution, one of the main building blocks required for transport, injection, and storage of CO₂ subsea.

OneSubsea will present results from performance testing with water and dense phase gas CO₂, demonstrating steady pump performance over the full operating envelope. This represents a technology stretch with increased speed range, shaft dimensions, and new process media compared to previously developed pump solutions. The high-pressure test facility specifically developed to qualify the pump capabilities is equipped with a full set of condition monitoring instrumentation and CO₂ flow metering system to ensure accurate performance evaluation. This includes Vx flowmeters, Ultrasonic flowmeters, Coriolis mass flow meter, densitometers, process coolers, flow loop choke, and a slug generator arrangement, all contributing to building knowledge for dense gas CO₂ applications