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WA-472-P WA-473-P Anchor Holding Test

Activity type Drilling
Activity subtypes
Submitted by Woodside Energy Ltd
Submission date 29 September, 2015
Subtype New
Decision date 10 November, 2015
RMS ID 3340
Status Finalised
Outcome Accepted
Link to previously accepted EP

Paul Kelley
Well Delivery Manager, Australian Ops
Woodside Energy Limited
240 St Georges Terrace
Perth WA 6000
Phone: +61 8 9348 5179

Location map (click to enlarge)
Location map - Activity: WA-472-P WA-473-P Anchor Holding Test (refer to description)

The planned ‘Skippy Rock’ and ‘Buttons Crossing’ exploration wells are located in WA-472-P and the ‘Big Brooks’ exploration well is in WA-473-P. Two of the three wells may be required to meet permit work plan commitments issued under the Offshore Petroleum and Greenhouse Gas Storage Act 2006 (Cth).
The proposed drilling activities are scheduled to commence in Quarter 1 2016 and are subject to a separate EP.
To ensure MODU mooring capability in the area can be met, Woodside proposes to undertake an anchor holding test around the Skippy Rock well location, with potential testing around Buttons Crossing and Big Brooks.
The anchor holding testing activity is planned to be carried out using up to two anchor handling vessels (AHV) (with associated support vessels).
The AHV(s) will drop an anchor and provide tension, to ensure embedding of the anchor occurs. The vessel will then drift back and use an ROV to examine the level of embedding on the seafloor. The anchor will then be removed, and another test conducted at a different location (locations determined by proposed mooring spread for the MODU).
A 1NM radius precautionary zone will be in place around the AHV when anchor testing is being conducted.
(Initially submitted as  ‘WA-472-P and WA-473-P Exploration Drilling Environment Plan)

Other Details
Locations North West
Commonwealth waters adjacent to Western Australia
Titles (or other instruments) WA-472-P
Current Documents (Finalised)
EP Document

Location map