Australia’s offshore regulator NOPSEMA ordered Vermilion Energy to halt crude offloading at its Wandoo oilfield in February 2026, following an oil spill and a finding of systemic safety failures at the field’s ageing infrastructure. The shutdown places Vermilion’s planned exploration drilling programme — and the long-term future of its only Australian asset — under serious regulatory and commercial pressure.
NOPSEMA Cites Systemic Failures at Wandoo
The February 2026 direction from NOPSEMA prohibits Vermilion from resuming crude offloading until the Wandoo oil export system is demonstrated to be safe and fit for purpose. The regulator’s intervention followed a hydrocarbon release — the fourth minor spill at Wandoo since 2021 — and a broader assessment that found inadequate inspection and maintenance practices, alongside repeated non-compliance with Wandoo’s approved environment plan.
The safety case situation compounds the regulatory picture. Vermilion submitted a required update to the Wandoo safety case in June 2025 but was informed in July that it required revision. As of March 2026, the updated safety case has not been resubmitted to NOPSEMA — leaving the field operating without a current accepted safety case document, a significant compliance gap for an offshore petroleum facility in Australian Commonwealth waters.
A Decade of Minimal Returns
The regulatory shutdown arrives against a difficult financial backdrop. Vermilion’s Australian subsidiary generated a total profit of just $550,000 from Wandoo across the entire period from 2015 to 2024, according to annual reports filed with ASIC. Annual production has fallen 47% over that decade, declining a further 2% in 2025. Output for the year ending June 2025 reached 1.15 million barrels — approximately 3,148 barrels per day — well below the field’s late-1990s peak.
Wandoo commands a premium to Brent crude pricing given its low-sulphur quality, which has historically supported the economics of continued operation at relatively modest production rates. But the combination of declining output, mounting maintenance costs, and now a regulatory shutdown creates a materially different investment case than Vermilion presented when it outlined its exploration programme in late 2025. The commercial pressures facing mature offshore assets are part of a wider upstream challenge examined in our 2026 oil and gas storage trends outlook.
Exploration Programme: Approval Pending, Future Uncertain
Vermilion has submitted an environment plan to NOPSEMA covering up to seven near-field exploration wells in the Wandoo WA-14-L licence area, targeting prospects including Kullingal, Mottlecah, and Jinjulu. Drilling is scheduled to commence in 2026 or 2027, dependent on NOPSEMA acceptance of the environment plan and availability of a Mobile Offshore Drilling Unit.
The exploration programme now faces a significant credibility problem with its regulator. NOPSEMA’s current direction explicitly states that Vermilion has not demonstrated it can meet regulatory requirements or maintain adequate health, safety, and environmental risk management — conditions it must satisfy before the drilling environment plan can be accepted. The regulator is simultaneously assessing the exploration plan while having issued a direction against the operator’s existing production operations.
If the exploration wells are not drilled, or if results are commercially disappointing, Vermilion faces a decommissioning scenario significantly ahead of its stated target of operating Wandoo until at least 2040. Decommissioning the Wandoo A steel monopod platform and associated pipelines is estimated at $103 million, with well abandonment costs of a further $106 million — a combined liability of approximately $209 million. Vermilion has not provided for removal of the Wandoo B concrete gravity structure in its asset retirement obligations, a position that may attract scrutiny given the regulatory climate.
The Wandoo Infrastructure
The Wandoo field sits approximately 80 kilometres northwest of Karratha in the Carnarvon Basin, in 55 metres of water. Wandoo B — a concrete gravity-based structure built with 28,000 cubic metres of concrete and 8,500 tonnes of steel — is the only facility of its type in Australia and serves as the field’s primary production, processing, and oil storage hub, with capacity for 400,000 barrels. Wandoo A is an unmanned monopod wellhead platform, now 33 years old, tied back to Wandoo B for processing.
Vermilion acquired its initial 60% stake in Wandoo from ExxonMobil in 2005, taking full ownership in 2007. The company has conducted seven drilling campaigns over the field’s history. For context on how major upstream operators manage mature offshore assets, see our roundup of the top 10 upstream oil and gas companies in 2026.
What Happens Next
Vermilion must satisfy NOPSEMA on three fronts before the field can return to normal operation: resubmit and gain acceptance of the updated safety case, demonstrate the export system is fit for purpose, and restore compliance with its environment plan. Only once those conditions are met does the exploration environment plan assessment become a realistic path forward.
The Wandoo situation illustrates a recurring challenge for operators of mature offshore assets: the cost of maintaining ageing infrastructure to regulatory standard often escalates faster than production revenue from declining fields. For Vermilion, a Calgary-headquartered company with operations across Canada, Europe, and Australia, Wandoo represents a small but reputationally significant asset — one that is now drawing public attention from Australia’s offshore regulator at an awkward moment in the exploration approval process.
Why has NOPSEMA shut down the Vermilion Wandoo oilfield?
NOPSEMA ordered Vermilion to halt crude offloading at the Wandoo oilfield in February 2026 following an oil spill — the fourth since 2021 — and a finding of systemic safety failures including inadequate maintenance and repeated non-compliance with the field’s approved environment plan. Vermilion cannot resume offloading until the export system is demonstrated to be safe and fit for purpose.
What is the current production rate at the Wandoo oilfield?
Wandoo production for the year ending June 2025 was approximately 1.15 million barrels, equivalent to around 3,148 barrels per day. Production has fallen 47% over the past decade and declined a further 2% in 2025.
What are Vermilion’s exploration plans for the Wandoo field?
Vermilion has submitted an environment plan to NOPSEMA covering up to seven near-field exploration wells in the Wandoo WA-14-L licence area. Drilling is targeted for 2026 or 2027, subject to NOPSEMA acceptance of the plan and rig availability. The exploration programme is now at risk given the regulator’s current direction against Vermilion’s production operations.
How much would it cost to decommission the Wandoo oilfield?
Vermilion’s consultants estimate decommissioning the Wandoo A platform and associated pipelines at approximately $103 million, with well abandonment costs of a further $106 million — a combined liability of around $209 million. The Wandoo B concrete gravity structure has not been included in Vermilion’s asset retirement obligations.
Who operates the Wandoo oilfield and when did they acquire it?
The Wandoo oilfield is operated by Vermilion Energy, a Calgary-based international oil and gas company. Vermilion acquired an initial 60% stake from ExxonMobil in 2005 and took full ownership in 2007. The field is Vermilion’s only Australian asset, located approximately 80 kilometres northwest of Karratha in the Carnarvon Basin.