APPLICATIONS

TrussFloatTM as floating wind platform to power onshore electricity grids

Globally, there is an ever increasing need for renewable energies within the energy mix to limit global warming due to greenhouse gas emissions. Offshore wind is now a main source of renewable energy.

Floating wind will allow to fully exploit this potential, with important development opportunities.

 

Limited impacts

  • Little noise and visual pollution onshore
  • Very limited sea bed impacts, even in complex soils​

 

Increased competitiveness over time compared to bottom-fixed wind 

There is a high potential of cost reduction over time. Indeeed the Levelized Cost of Energy (LCOE) will benefit from :

  • Access to better wind quantity and quality (> 8 m/s) at deeper water depths (> 60 meters)
  • More predictable source of energy for a better integration in the grid
  • Reduced installation costs: no need for expensive offshore installation vessels
  • Wind turbine power capacity and efficiency can be increased with technological improvements

TrussFloatTM as floating wind platform to decarbonize O&G production

Is it estimated that about 5% of offshore production is consumed for offshore electric power generation, resulting in :

  • Reduced sales volumes
  • Deficiency of fuel sources could force early cessation of mature fields :
  • In case of transition from gas lift activation to electric submersible pumps, O&G production requires additional electric power wich is problematic if gas is becoming scarce
  • High water cut production or heavy crude are hardly suitable for power generation, hence O&G producers face the challenges associated with continuous offshore Diesel supply 
Benefits of floating wind for O&G companies 
Benefits for O&G production
  • Reduce carbon footprint
  • Avoid emission costs related to CO2/NOx/etc.
  • LCOE of floating wind power expected to be competitive with offshore diesel power generation as early as 2022-2025
  • Increase gas sales or re-injection by reducing own consumption
  • Increase production and lifetime for mature O&G fields
  • Deferral of decommissioning costs
  • Space premium & HSE benefits on main platforms (less thermal power production equipment)
Preparation for commercial floating wind farms
  • Allows to acquire first-hand knowledge in risk and cost assessment for most competitive feed-in tariffs
  • Leverage competitive advantage due to transferable offshore expertise
  • Credibility and visibility in renewable energy markets
TrussFloatTM as floating wind platform for water injection for O&G production
Thanks to TrussFloat‘s superior stability and high deck capacity, floating wind power can be used for direct water injection in mature O&G reservoirs. This innovative technology reduces scope 1 and 2 emissions, prolongates reservoir lifetime and allows important savings in capital expenditure in situations where the injection well is far away from the production platform. TrussFloatTM floating platform accomodates and powers all necessary equipment such as sea water lift pump, water treatment plant, booster and water injection pumps. The whole system has to be designed such that the average water injection over a certian period of time meets the O&G production requirements. In this case, the reservoir serves as natural potential energy storage system to counter the intermittency of wind power.

TrussFloatTM as floating wind platform to generate green hydrogen

Floating wind power can be used to produce green hydrogen offshore. This award winning concept accompanies O&G majors towards a carbon neutral world by giving their O&G infrastructure a second life.

We believe that this should happen in two phases:

Phase 1: Electrification of O&G platforms or direct water injection with floating wind turbines. This is particularly interesting for mature fields with a lack of associated gas for thermal power production.

Phase 2: Installation of hydrogen production equipment on the floating wind turbines and hydrogen injection into existing O&G infrastructure. This is particularly interesting for near CoP O&G fields.

Phases 1 and 2 can also be carried out in parallel, depending on the maturity of the O&G production field.

After a two-stage application process, Dolfines has been laureate of the Marine Energy Alliance (MEA) for this concept. Dolfines is collaborating closely with MEA partners in the technical and commercial development comprising the basis design for open sea testing prototype including permitting aspects, hydrogen export line and mooring system, levelized cost of energy optimization and business case development.

 

TrussFloatTM as floating wind platform to power Carbon Capture and Storage (CSS)

Thanks to TrussFloat‘s superior stability at light weight, floating wind power can be used to power compressors to inject captured CO2 in mature or depleted reservoirs far off the coasts and in deep water. In case of mature reservoirs, CO2 injection enhances production. The whole system has to be designed such that the average CO2 injection over a certian period of time meets the O&G production requirements. In this case, the reservoir serves as natural potential energy storage system to counter the intermittency of wind power. In case of depleted reservoirs, the carbon dioxyde can be transported offshore using existing pipelines. This innovative technology reduces scope 1 and 2 emissions for carbon capture and storage (CCS) and allows important savings in capital expenditure in situations where the existing offshore O&G infrastructure can be used.