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Woollybutt Field Decommissioning

Activity type Decommissioning, dismantling or removing a facility
Activity subtypes
Lifecycle Classification Decommissioning
Submitted by Eni Australia Limited
Submission date 30 September, 2021
Subtype New
Decision date 16 May, 2022
RMS ID 6768
Status Finalised
Outcome Accepted
Link to previously accepted EP
Joe Covic
Phone: 08 9320 1111
Location map (click to enlarge)
Location map - Activity: Woollybutt Field Decommissioning (refer to description)

The Woollybutt Field is located approximately 80 km off the northwest coast of Western Australia in Lease Area WA-25-L. The Field is approximately 30 km west of the Barrow Island Marine Management Area and Marine Park boundary, and more than 50 km south-west of the Montebello Islands Marine Park.

The scope of this Environment Plan (EP) covers the decommissioning of the following infrastructure within Permit Area WA 25 L: six steel mooring anchors and chains, eight concrete umbilical crossing mattresses and 16 grout bags, approximately 10 km of umbilicals and jumpers, and approximately 20 km of flexible flowlines and jumpers.

Property described to be covered is: DSPM mooring anchors and chains, umbilical crossing mattresses (8) and grout bags (16), umbilicals and jumpers (10) totalling 8.3 km length, flexible reinjection flowlines and jumpers (4 flowlines, 4 jumpers, 4 risers) with a combined length of 20.1km.

This EP proposes to recover the above Woollybutt field infrastructure for disposal onshore with the exception of the buried DSPM mooring anchors and the buried sections of mooring line. The activity is proposed to be undertaken in 2022 with a duration of 60-90 days.

Other Details
Locations North West
Commonwealth waters adjacent to Western Australia
Titles (or other instruments) WA-25-L
Current Documents (Finalised)
EP Document

Location map


Previous EP Documents (Under assessment)
EP Document

Location map