P80 - providing power to an oil rig

Innovative study shows potential for up to 70 percent reduction of CO2 emissions from offshore oil and gas production

Thursday 27 May 21

A new study of an innovative project based on Power-to-X and floating wind technology shows that CO2 emissions from production of offshore oil and gas can be reduced significantly, if the platforms are supplied with renewable energy. The solution can potentially bring greener gas to shore.

The project O/G Decarb is a theoretical feasibility study, where the project partners during the past two years have assessed whether wind and wave energy on a floating foundation with optional integration of hydrogen, potentially can improve the CO2 emission from offshore oil and gas production.

The project partners are Floating Power Plant, Hydrogen Valley, DTU Wind Energy, TechnipFMC, Danish Hydrocarbon Research and Technology Centre, and Total. Energy Cluster Denmark has facilitated the study.

The conclusions from the study shows that floating wind and wave technology has great technical potential in regards to reducing emissions from offshore oil and gas production. However, there is limited commercial potential and scalability in the Danish North Sea due to the special conditions that applies to Danish operations; mature fields and a low water depth combined with limited wind and wave energy compared to other locations.

In the study, three concepts and business cases have been elucidated in order to reduce the footprint from production of oil and gas.

  • The study has shown a potential for an offshore production platform to be supplied with energy from wind and waves. This in itself could potentially reduce CO2 emissions from production by 70 percent.
  • The study has also shown that integration of hydrogen production and storage can be used as an alternative energy source on days with little or no wind or waves. This significantly improves the power consistency and reduces CO2 emissions by more than 70 percent.
  • The study also highlighted the possibility of adding 2-15% hydrogen to the natural gas exported to land. Hydrogen in the natural gas export stream can reduce the footprint of the gas produced, which has proved technically possible but is limited by the current legislation.
  • Due to the characteristics of the Danish North Sea, the specific project application will result in high reduction costs. In another operating environment, the technology has a clear potential in terms of providing a cost-effective solution for delivering consistent energy production, which will provide maximum CO2 reduction.

Reduced emissions

Overall a very interesting result for the project partners:

"The O/G Decarb study has proven a potential, but also highlighted some of the technical and economic challenges in regards to electrification, just as the concept has shown a limited potential for operation in Denmark. Innovative concepts like this are interesting to us and we will continue to study electrification scenarios for the DUC installments in our effort to reduce emissions", says Kenneth Gaardboe Nielsen, Senior Facilities Engineer, Total E&P Denmark.

Centre Director in DHRTC, Morten Jeppesen also views the electrification of offshore oil and gas production as an important task, as it gives the industry an opportunity to reduce emissions:

"It is difficult to reduce CO2 emissions due to the platforms being located far out in the North Sea, far away from existing electrical infrastructure. If we can replace the natural gas currently used to supply the platform, we can reduce CO2 emissions", he says.


Watch Morten Jeppesen explain more about the project in the video above.


Photo: Floating Power Plant

News and filters

Get updated on news that match your filter.