OneSubsea - At the forefront of technology development

By leveraging cutting-edge technologies and industry expertise, OneSubsea is playing a crucial role in transforming the subsea industry
OneSubsea is a global provider of subsea production and processing systems, with a deep commitment to innovation, efficiency, and sustainability. The company delivers integrated solutions, products, systems and services to the energy industry, enabling a step change in reservoir recovery through the integration of the entire production system over the life of the field.
Although the company still has one foot firmly planted in conventional offshore activities, it is increasingly working with technology that can enable alternative forms of low-carbon or zero-emission solutions.
Game-changing projects – transforming the industry
Ormen Lange: Thought leadership on the energy trilemma

Ormen Lange Phase 3 is one of OneSubsea’s flagship projects—a fully subsea-to-beach subsea gas compression system that will be powered by hydroelectricity from the Norwegian grid, making it one of the lowest carbon-intensive projects in the industry.

Operated by A/S Norske Shell, the Ormen Lange gas field lies at a water depth of 800 – 1,000 meter in the Norwegian Sea, 120 km off the west coast of Norway. The field began producing in 2007, and today it meets up to 20% of the UK’s gas needs.

OneSubsea will be delivering a subsea compression system, which will unlock an additional 30-50 billion cubic meters of natural gas from the field, increasing recovery rate from 75% to 85%. To achieve this, two compressor stations will be installed close to the field at a water depth of 900 meter, which will be powered from shore through a 120 km long umbilical. This is an industry first and an enabler for the wider industry.

The system is a real gamechanger. Compared to previously evaluated solutions for Ormen Lange, the OneSubsea system is significantly smaller in size and weight, and more cost effective. The performance of the system has recently been validated by a dedicated technology qualification program, demonstrating that the system can be operated from shore through a record-braking stepout distance.

Earlier this year, the EU officially classified natural gas as green energy, further supporting the importance of increasing gas production and extending the lifespan of fields such as Ormen Lange.

Energy security is not just about having uninterrupted access to energy, but also about securing energy supplies at an affordable price, while minimizing our environmental impact.

With the Ormen Lange project, OneSubsea is demonstrating how through its technology can help address the energy trilemma of balancing the three competing priorities of energy security, affordability, and environmental sustainability.

Repurpose technology – What the future can bring
For more than half a century, the subsea industry has been developing an outstanding array of technology and competence, which today offer key building blocks to realize new prospects and open new avenues in the low-carbon energy market.
OneSubsea has been actively pursuing opportunities to repurpose its technology for various applications within the industry. Among these are novel solutions for subsea power systems, infrastructure for offshore renewable energy, and carbon capture, utilization and storage (CCUS).
Subsea substation
A subsea substation receives power from wind turbines, transforms the voltage, and subsequently transmits electricity to shore. By locating the substation on the seabed, where environmental conditions are stable and cold, the system can be significantly simplified. Additionally, it would require less maintenance, be more efficient and economical, and with a lower carbon footprint than floating or bottom-fixed topside substations.
High-power subsea CO2 pump

Capturing and sequestrating CO2 in hydrocarbon reservoirs are two key strategies to reduce emissions and contribute to our net-zero goals. Since 2017, OneSubsea has made significant efforts to develop, manufacture, and qualify a high-power deepwater CO2 pump, one of the main building blocks for subsea CCUS solutions.

Bigger and greater things – Subsea joint venture
OneSubsea is heading towards bigger and great things. Last year, SLB, Aker Solutions and Subsea 7 announced their intention to form a joint venture to drive innovation and efficiency in subsea production by helping customers unlock reserves and reduce cycle time. The agreement will bring together a portfolio of innovative technologies such as subsea gas compression, all-electric subsea production systems and other electrification capabilities to help customers meet their decarbonization goals.
The joint venture will bring together world-class businesses that are uniquely positioned to provide subsea technologies to help the industry improve recovery and reduce overall subsea development costs. The transaction is subject to regulatory approvals and other customary closing conditions, and is expected to close in the second half of 2023.
The energy transition needs young talent
The energy industry is a captivating tale of innovation and adventure. Today, the industry is undergoing what is perhaps its biggest transformation to date. The need to decarbonize and develop new technologies present a mix of challenges and opportunities for those who want to be at the forefront of the energy transition.

Net zero will not be achieved overnight. It will require bold strategies, innovation, and curiosity. This is where the next generation of talent can have an impact.


OneSubsea is committed to developing the next generation of talent. The company offers a wide range of opportunities for young professionals who are keen to gain hands-on experience and develop their skills. These include internships, part-time jobs, and a well-structured career ladder for those who wish to climb higher.

OneSubsea will be showcasing its new subsea ultrasonic flow meter at UTC 2023. Attendees can look forward to hearing more about subsea compression, subsea boosting, the CO2 subsea pump, and the subsea substation.
A large team of seniors and young professionals from OneSubsea will be present at the UTC conference. Be sure to catch them to network and learn more about OneSubsea.