Banner image

Activity - Stybarrow End State Decommissioning

Activity details
Organisation Woodside Energy (Australia) Pty Ltd
Project Stybarrow Development
Activity types Decommissioning, dismantling or removing a facility
In-force EP 7115
Submission date 31 July, 2022
Outcome Accepted
Acceptance date 23 May, 2024
Locations North West
Start date Pending titleholder notification
Stop date Pending titleholder notification
Lifecycle Classification Decommissioning
Please note: activity start and stop dates are based on notifications provided by the titleholder.

Titleholder contact
Andrew Winter
Phone: 08 9348 4000

Activity Description
Woodside Energy (Australia) Pty Ltd (formerly BHP Petroleum Australia Pty Ltd) is undertaking the safe and sustainable closure of the Stybarrow Development in petroleum licence WA-32-L off the coast of Western Australia, around 56 km north-west of Exmouth, and in water depths of about 810 m – 850m.

The equipment, covered under this EP, includes 9 anchors, 10 suction base foundations piles and a historical exploration wellhead buried in the seabed which will remain in situ. Management and removal of the other subsea equipment in the Stybarrow field, is addressed in Stybarrow Decommissioning and Field Management EP. The petroleum activity in this EP is scheduled to commence in March 2025 once the equipment removal activities described in the Stybarrow Decommissioning and Field Management EP are completed.

Impacts associated with the ongoing presence of the equipment include long-term degradation of the materials, alteration of seabed and benthic habitats and potential displacement or interactions with other users. These impacts and risks have been demonstrated as ALARP and acceptable in the EP. The petroleum activities in this EP will have been completed once the environmental performance standards within have been met and reported upon to NOPSEMA.
Location map (click to enlarge)
Location map - Activity: Stybarrow End State Decommissioning (refer to description)

Accepted EP Documents

EP Document A1079727 (33.9 MB)
Statement of reasons A1098173 (554 KB)

Related EP assessments

7115 (Click to view)