Moderated by: Vidar Strand, Baker Hughes and Gunnar Birkeland, UNITECH Energy Group

17:00 - 17:20

Subsea Hydrogen Storage and Infrastructure – for stable energy as electricity or hydrogen to consumers in the ocean space
Svein Kjenner - TechnipFMC 

Taking advantage of years of knowhow and experience from subsea and combining with new knowledge, enables new possibilities in the energy transition journey

6 years ago we asked the question: How could we utilize the competency within subsea to enable CO2 reduction? Later the idea of Deep Purple was incepted.

Deep Purple is about researching the problem of reducing CO2 and finding solutions. We started by looking at the Oil & Gas domain on the Norwegian Continental Shelf where we identified interesting concept for reducing significant C02 emissions.

NCS have excellent wind conditions however this energy source is highly intermittent and energy storage is inevitable. Since Hydrogen is noted as a candidate for seasonal GWh energy storage medium, we looked into how this could be realized. Compressed Hydrogen with GWh  capacity was studied. By utilizing subsea knowledge to place the storage under water, we get access to lots of space to place large size storage tanks in a safe and stable environment.

For the subsea hydrogen infrastructure, the scope is to select concepts and qualify technology to TRL level 6 EU scale which means: tested in realistic simulated environment. Selected elements to be qualified are connection system, pipelines, risers, storage tanks, and storage system. The presentation will cover status on how far we have come and what the learnings are so far.

This presentation covers:

• Introduction to the overall concept
• Roadmap and applicable use cases
• The concept and scope for hydrogen & subsea technology development
• The challenges and learnings

17:20 - 17:40

Decarbonizing gas field developments
Nicolas Barras - Aker Solutions 

Gas is part of a low emission energy transition away from coal in a world with ever-increasing energy demand. The European Commission has presented the Taxonomy Complementary Climate Delegated Act on climate change mitigation and adaptation, addressing gas as a transitional energy source.

Knowing the impact of energy consumption is an eye-opener. What are the emissions and their related cost? What is the effect of increasing CO2 taxes? What is the cost of energy over time? Should we choose something more energy efficient with a higher CAPEX? All these questions may be answered using Just Eco, a new tool developed by Aker Solutions. A comparison of different alternatives such as: products, vendors, technology or concepts may be performed. Emissions related to power generation will be different from region to region, a kg CO2/kWh will be defined representing the regional norm for electricity generation.

As an example, subsea gas compression has proven its value as a real opportunity to maximize return for mature gas fields as well as new discoveries, with a significant potential for reduced CAPEX and OPEX compared to topside solutions. Also the environmental footprint of subsea compression installations are significantly lower, offering advantages over topside solutions. There is a substantial reduction in power demand compared to a traditional compression setup. Decarbonizing the production of gas as part of the energy transition to meet the energy demand in a responsible way is calling for this technology in years to come.

17:40 - 18:00

Subsea compression – a global impact technology
Aase Taranger - OneSubsea 

The global shift to drastically reduce greenhouse gas emissions has positioned natural gas as one of the key sources to accelerate decarbonization of the energy mix. The method used to extract these resources, as well as the associated energy consumption, will also be a major contribution in meeting the defined sustainability goals. Subsea compression technologies have an instrumental role to play as they provide significant benefits in terms of recovery, accelerated production, as well as energy efficiency.  In other words, producing more low carbon energy, with less energy consumption.

Subsea gas compression takes advantage of more than 25 years of advancements in the subsea boosting domain. This is particularly true for the OneSubsea multiphase compression technology, leveraging an unparalleled experience with 35+ systems delivered, totaling more than 4 million hours of operating time.

The benefits of subsea compression are particularly evident for deep waters and long tiebacks. Scientific studies show that subsea compression enables more than 60% reduction in compression energy compared to the topside option. Along with increased recovery, the reduction in energy intensity will be even greater.

Shifting to renewable and low-carbon energy sources is essential for decarbonizing oil and gas production. Regardless of energy source, optimizing the energy efficiency in the production value chain secures adequate energy supply, which in turn reduces cost, carbon footprint and environmental impact. Subsea multiphase compression is the best tool to drastically reduce the energy intensity of offshore gas production.