“Decommissioning projects of this magnitude need intensive planning and care, which is why the New Zealand Environmental Protection Agency approached us for an independent review to verify whether the approach aligned to international standards and best practice.”
Assessing technical accuracy and environmental impact
We formed a multi-office team to complete a technical review of the decommissioning plan for the floating production storage and offloading (FPSO) facilities. This included decommissioning subject matter experts from Vysus Group, our partner under Worley’s Global Decommissioning Collaboration.
Together, we assessed the approach to cleaning, de-mooring, and removing the FPSO structures. We looked at safely removing, recovering and disposing of the infrastructure and mooring systems, and the down hole plug and abandonment approach for the production and gas lift.
Setting the project up for the next phase
We concluded that the New Zealand EPA decommissioning approach aligns with international regulations and best practices. Most importantly, it’s environmentally safe.
We also suggested pathways to realize environmental benefits. This included reducing impacts on the local seabed and water column and using the latest approaches to restore marine habitats with reefing.