Green light for wellhead removal ops at Australian oil field
What happened
NOPSEMA approved Jadestone’s environmental plan to remove three wellheads at Montara, specifying ROV surveys, seabed prep, wellhead recovery and a single vessel capable of deck recovery. The plan includes an operational allowance that covers mobilisation, surveys, removal and demobilisation and mandates disposal within 12 months after arrival at the receiving port. Watch supplier vessel availability, port disposal capacity and whether mobilisation slips force acceptance of premium re‑routing or overtime work
Buyer takeaway
Treat Montara as a firm mobilization window that needs confirmed vessel and disposal plans; single-vessel scope reduces substitution options and increases scheduling leverage for suppliers
Cost / money
Expect logistics and port disposal pass-throughs and potential premium day rates for the recovery-capable vessel if calendar slots are tight
Supplier / commercial
Vessel and ROV owners can push reservation fees or shorter quote validity; buyers should require disclosure of such mechanics up front
Safety / operations
ROV seabed operations and deck recovery involve lifting and handling risks; ensure contractor lift plans and recovery procedures are validated against the EP
What to watch
Watch for mobilisation slips that cascade into port handling and disposal windows; verify port capacity and waste acceptance before awarding mobilisation-critical work
Key facts
- Single vessel required for recovery and deck handling
- Operational allowance includes mobilisation, surveys, removal and demobilisation
- Dismantling/disposal to be completed within 12 months of arrival at receiving port
Source excerpts
The EP underlines that the wellhead removal will be subject to the availability of a suitable vessel, and whenever feasible, will be a vessel of opportunity mobilizing to the Montara field for other activities. As a result, the exact timing of the wellhead removal is unknown
The EP underlines that the wellhead removal will be subject to the availability of a suitable vessel, and whenever feasible, will be a vessel of opportunity mobilizing to the Montara field for other activities
A final abandonment report was submitted to the regulator for these wells in September 2021. 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
