Activity details

Organisation	Woodside Browse Pty Ltd
Project	North West Shelf
Activity types	Any other petroleum-related activity
In-force EP	7064
Submission date	24 June, 2022
Outcome	Accepted
Acceptance date	15 September, 2022
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

Activity Description

Woodside is planning to decommission four exploration wellheads. The wells are located in permits WA-32-R and WA-28-R around 380 km north of Broome, at water depths of between approximately 501 m and 677 m. The wellheads and associated infrastructure are proposed to be left in situ. A Decommissioning Options Assessment was performed for the wellheads which compared removal of infrastructure to leaving it in situ. The assessment found that the leave in situ decommissioning option was preferred as it meets legislative requirements, is technically feasible, has no health and safety risks, and provides equal environmental impacts and lower risks when compared to removal compared. Impacts associated with the ongoing presence of the wellhead include long-term degradation of the wellhead material and potential displacement or interactions with future trawl fishers. These impacts and risks have been demonstrated as ALARP and acceptable in the EP. The petroleum Activities Program will end four months after acceptance of this EP by NOPSEMA and the expected duration of the activity will be zero days.

Location map (click to enlarge)

Accepted EP Documents

EP Document	A872842 (11.7 MB)
NOPSEMA Report	A876163 (138 KB)

Related EP assessments

7064 (Click to view)