Green light for wellhead removal ops at Australian oil field
What happened
NOPSEMA approved Jadestone’s environmental plan to remove three wellheads at the Montara field, including ROV surveys, seabed prep, removal and on‑deck recovery. The regulator acceptance defines a one‑vessel execution profile and allows for an allowance period for mobilisation, surveys, removal and demobilisation, making logistics and port disposal the key follow‑on items to watch
Buyer takeaway
This approval converts planning into committed activity; treat vessel, port reception, waste handling and demobilisation as contract negotiation levers
Cost / money
Cost exposure can shift at handovers (vessel demob, port reception, disposal). Without clear incoterm‑style responsibilities, buyers face unexpected pass‑throughs
Supplier / commercial
The single‑vessel and short‑activity windows increase supplier leverage on availability and demurrage terms; expect short‑validity quotes for any late changes
Safety / operations
ROV surveys and subsea recoveries require validated lift plans and certified handling procedures to avoid HSE incidents during recovery and deck transfer
What to watch
Watch for vague port and disposal clauses or late changes to mobilisation windows that create demurrage disputes and change‑order claims
Key facts
- Includes 'as‑found' and 'as‑left' ROV surveys and seabed preparation
- Single vessel required for recovery, with mobilisation and demobilisation allowance
- Dismantling and disposal to occur after arrival at nominated port and waste facility
Source excerpts
The accepted EP, which provides for the removal of Montara-1, 2, and 3 wellheads, includes remote operated vehicle (ROV) activities such as ‘as found’ and ‘as left’ surveys, marine growth removal, and wellhead area preparation
The dismantling and disposal of the wellheads is anticipated to be completed within 12 months of arrival at the receiving port and waste management facility
One vessel is required to complete this activity with the capacity to recover the subsea infrastructure to the deck. The dismantling and disposal of the wellheads is anticipated to be completed within 12 months of arrival at the receiving port and waste management facility
