Key learning outcome: The subsea CO2 subsea projects are challenged with less mature standards and a tighter economy inhibiting developing of own tailored robust low cost hardware to avoid using overrated oil and gas subsea hardware.
The Polaris project is an offshore CO2 injection system located ca 100 km of the coast of Finnmark where a saline aquifer reservoir is targeted for permanently storage. It is the primary CO2 storage solution for the Barents Blue project, an ammonia plant project utilizing gas production capacity from the Melkøya plant. The project also cater for inclusion of further 3rd party CO2,transported by ship, for injection via an onshore terminal and a 200 km pipeline or by direct injection using offshore offloading bouys.
The CO2 projects have many similarities with subsea oil and gas, but a different economy. There is a drive for low cost, still sufficiently robust, technical solutions. The available standards and engineering practices are not as complete and comprehensive. This impacts the system architecture, pipeline engineering, power and communication solutions. A subsea all-electric approach, with limited track record in subsea oil & gas application, can have significant cost benefits for very long tie-backs. The lack of service line could also make barrier testing of subsea XTs unpractical.
Subsea oil and gas systems, typically 690 bar, is overrated for CO2 applications. This drives the size, weight and cost of such items. The qualification cost of bespoken equipment for CO2 service is found inhibiting as single project required quantities cannot support this.
Chief Technology Officer, Horisont Energi.
Having a solid background from projects and operations, with over 35 years of subsea experience, Ståle holds a key position as Chief Technology Officer in Horisont Energi. Combined with his experience from management and executive boards, Ståle is an experienced business developer whose focus is to secure robust day to day operations in the company, developing a clean energy company for the future.
Øyvind has over 20 years of experience within the Oil and Gas industry since starting his first job as Drilling Service Engineer in Schlumberger in 2002. He joined in PGNiG Upstream Norway in 2019 and his current role is Principal Facility & Project Engineer within in the Department for Production and Operations where he supports projects and operations both within own operated licences and non-operated partnerships. The work scope covers from early phase concept evaluations and up to detailed root-cause-analysis as required. He is a jack-of-all-trades having a strong multi-discipline engineering background and enjoy working with overall system functionality and seeking the best concepts within the assigned frames without compromising on the safety aspects. His main domain is within subsea engineering, but skills overlap both upstream and downstream from the wells to the topsides. Øyvind holds a Master of Science in mechanical engineering from Institute of Thermal Energy and Hydro Power at Norwegian University of Science and Technology (NTNU).
At Grieghallen in Bergen, Norway 11 – 13 June