Banner image

Prelude Subsea Installation

Activity type Construction and installation of a facility
Activity subtypes Any other petroleum-related activity
Submitted by Shell Australia Pty Ltd
Submission date 15 September, 2014
Subtype New
Decision date 13 November, 2014
RMS ID 2910
Status Finalised
Outcome Accepted
Link to previously accepted EP

Daphne Fei
Prelude Production HSSE Manager
Shell Australia Pty Ltd
GPO Box A47
Perth WA 6837
Telephone: +61 8 9223 0307
Mobile: +61 4 02 975 481

Location map (click to enlarge)
Location map - Activity: Prelude Subsea Installation  (refer to description)

Shell Australia Pty Ltd (Shell) proposes to install and pre-commission subsea facilities in the Petroleum Permit Area WA-44-L as part of the Prelude Floating Liquefied Natural Gas (FLNG) Project. Prelude will be located in Commonwealth marine waters in the northern Browse Basin, 200 km offshore northwest Australia and 475 km north-north east of Broome.
The subsea facilities that are within the scope of this Environmental Plan include:
Two production manifolds
One riser base manifold
Four production flowlines
One subsea umbilical and associated subsea distribution hardware
Jumpers, steel flying leads, umbilical termination assemblies
16 mooring lines and 16 piles
Associated temporary equipment (initiation anchors and parking frames) necessary for the installation activities
Upon arriving in the field, the installation vessel will set up a seabed survey array to accurately position the structures. The vessel will then install the facilities on the seabed guided by Remotely Operated Vehicles (ROVs). A post-installation visual ROV survey will also be done to record as-built and as-laid conditions of the installed facilities. The subsea facilities will have a significant duration (for some equipment around 18 months) between equipment installation at site and hook-up to and start-up of the Prelude FLNG facility. The installation campaign will commence in mid-2015 to mid-2016 with one to six vessels in the Prelude field at any one time executing the installation activities.
Note: This information has been extracted from the EP Summary. Please refer to the attached EP Summary for more information.

Other Details
Locations North West
Commonwealth waters adjacent to Western Australia
Titles (or other instruments) WA-44-L
Current Documents (Finalised)
EP Document

Location map