Woodside Energy Ltd (Woodside), as titleholder on behalf of joint venture partners, proposes to undertake the following activities:
• Light well intervention activities on the Cossack-4H (CK4) and Lambert-3 (LH3), Wannea-7ST1 (WA7) and Wannea-8 (WA8) wells using a light well intervention vessel.
• Routine and non-routine support activities, including support vessel and helicopter operations.

The wells are tied back to the Okha floating production, storage and offloading facility (FPSO) and on completion of the Petroleum Activity will be managed under the accepted Okha FPSO Operations EP.

The Operational area is in petroleum titles WA-9-L, WA-16-L and WA-11-L, in Commonwealth waters, approximately 120 km north-west of Dampier in water depths between 81 m and 128 m.

The Petroleum Activity may occur between ~ Q2 2027 and 2031, in a single campaign or over multiple campaigns. The duration of the activities at each well range from between approximately 14 and 35 days. The vessels involved will be operating 24 hours a day, 7 days a week. Timing and duration are subject to change due to factors including approvals, weather, project vessel availability and other unforeseen circumstances.