Green light for wellhead removal ops at Australian oil field
What happened
NOPSEMA accepted Jadestone’s environment plan for removing three Montara wellheads, authorising ROV surveys, seabed prep, recovery and a single‑vessel execution model with an allowance that covers mobilisation and demobilisation. The work expects approximately two days on each wellhead with an overall mobilisation allowance to handle surveys and recovery, making this a concrete near‑term vessel and ROV demand. Watch whether the project team confirms nominated disposal port and vessel availability, as those choices will define mobilisation cost pass‑throughs
Buyer takeaway
Treat the regulator approval as a firm execution window: vessel, ROV and disposal logistics now matter for mobilisation costs and contract scope
Cost / money
Mobilisation and disposal routing are likely to be material cost drivers because a single vessel will carry mobilisation/demobilisation charges and disposal handling
Supplier / commercial
ROV and deck‑recovery suppliers can commercialise seabed prep, marine‑growth removal and disposal routing if contracts leave these scopes undefined
Safety / operations
ROV recovery and heavy deck lifts carry HSE risk that needs method statements, exclusion zones and lifting controls in place before mobilisation
What to watch
Confirm nominated disposal port and waste facility early; unresolved port or permit issues will push costs or create shut‑down points during demobilisation
Key facts
- Three wellheads at Montara field
- Work allows ~2 days per wellhead with an approximate 14‑day mobilisation allowance
- One vessel required to recover subsea infrastructure to deck
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 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
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
