Woodside in the clear for plug & abandonment ops offshore Australia
What happened
Woodside received regulator approval to carry out permanent plug‑and‑abandonment work on multiple subsea wells in WA, with both vessel‑based and MODU strategies planned. The operation explicitly plans the MODU and support vessels to operate in the area for a sustained campaign spanning mobilisation, demobilisation and contingency activities; watch whether the vessel approach succeeds or the operator pivots to full MODU work
Buyer takeaway
Treat the approval as a confirmed campaign that will consume MODU and support vessel calendar space; negotiate slot proof and fallback obligations now
Cost / money
Sustained MODU/vessel occupation increases exposure to mobilisation premiums and pass‑throughs if slots are confirmed late
Supplier / commercial
Suppliers offering both vessel and MODU options gain negotiating leverage on timing and deposits; expect tighter quote validity
Safety / operations
Switching between vessel and MODU strategies changes certification, crew and equipment readiness profiles that must be managed in mobilisation plans
What to watch
Watch whether the vessel‑first plan is feasible in practice; a pivot to MODU will extend asset occupancy and change supplier commitments
Key facts
- P&A of three subsea wells (Julimar/Brunello sequence)
- Option to remediate an additional well (Balnaves Deep‑1) using vessel or MODU fallback
- Planned on‑site operations window spans mobilization, contingency, and demobilization over mu
Source excerpts
The P&A and well intervention will be undertaken using a moored or hybrid semi-submersible MODU with up to three MODU support vessels and an inspection, maintenance, and repair (IMR) vessel
If completed using a vessel-based strategy, no further activity will be performed under this EP. On the other hand, if the vessel-based strategy is not feasible or unsuccessful, the activity will be undertaken by a MODU-based strategy
The P&A and well intervention will be undertaken using a moored or hybrid semi-submersible MODU with up to three MODU support vessels and an inspection, maintenance, and repair (IMR) vessel. The MODU will undertake plug and abandonment activities, wellhead cutting, and may be used to remove wellheads
