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Activity - OKHA Floating Production Storage and Offloading Facility Operations

Activity details
Organisation Woodside Energy Ltd
Project North West Shelf
Activity types Operation of a facility for the recovery or processing of petroleum
In-force EP 5055
Submission date 15 November, 2019
Outcome Accepted
Acceptance date 12 August, 2020
Locations North West
Start date 10 December, 2014
Stop date Pending titleholder notification
Lifecycle Classification Operation & Production
Please note: activity start and stop dates are based on notifications provided by the titleholder.

Titleholder contact
Daniel Clery
Phone: 08 9348 4000

Activity Description
Woodside Energy Ltd (Woodside) is operator of the Okha Floating Production Storage and Offloading (FPSO) facility, located in Commonwealth waters approximately 135 km north-west of Karratha, Western Australia. The Okha facility comprises the Okha FPSO vessel and associated subsea infrastructure located in the Production Licences WA-16-L, WA-9-L, WA-11-L. Additional infrastructure within the scope of this EP includes a 32 km Gas Export Line (WA-4-PL) tied back to the FPSO and four temporarily abandoned exploration wells. The four temporarily abandoned exploration wells are located in Petroleum Titles WA-9-L, WA-16-L, WA-5-L and WA-3-L and are not tied back to the FPSO. The Okha FPSO currently produces oil and gas from 13 production wells in the Cossack, Wanaea, Lambert and Hermes (CWLH) fields. The CWLH fields contain light crude oil with varying gas-to-oil ratios. Oil from the Okha FPSO is dispatched to trading tankers and gas produced is exported onshore for processing. Operations at the Okha FPSO may include:
• production and maintenance activities
• major projects involving refurbishment, modification, or major maintenance of the facility
• FPSO marine (disconnected) mode.

The Okha FSPO commenced production in September 2011 and operates 24 hours a day, 365 days a year. Supporting operations, such as maintenance activities, take place as required. The CWLH fields are predicted to remain active during the life of this EP.

The closest nearshore sensitive habitats to the Okha FPSO are the Glomar Shoals (33 km north-east), Montebello Commonwealth Marine Reserve (72 km south-west), Rankin Bank (86 km west), and the Dampier Commonwealth Marine Reserve (88 km south-east). The water depth at the FPSO mooring location is 80 m, with wells located in water depths up to 129 m. The depths along the export pipeline range from 80 m at its eastern end (Okha FPSO) to 125 m at its western end (North Rankin Complex).
Location map (click to enlarge)
Location map - Activity: OKHA Floating Production Storage and Offloading Facility Operations (refer to description)

Accepted EP Documents

EP Document A739486 (Unknown size)