Project Profile
Value: US$1.86 billion
Location: Barrow Islands, off the Pilbara coast, 85 kilometres north – north – east of Onslow and 140 kilometres west of Karratha
Water Depth: 220m
Start-up Year: October 2013
Gorgon main project:
The projects will see the proposed establishment of a midstream development, which will includes an LNG facility on Barrow Island, which lies directly between the gas fields and the mainland. The LNG plant will have three trains, with a nominal capacity of 5 million tonnes per annum each (Train 1 due online 2014). The LNG plant can only be 300 hectares big under the 2003 Barrow Island Act. The joint venture partners have letters of understanding for the long-term supply of up to 4 million tonnes of LNG per annum to North American West Coast. There will also be a domestic gas plant, with a capacity of 256 MMcf/d (300TJ/d) is part of the project.
The CO2 re-injection scheme would transport produced CO2 from the Gorgon field and re-inject it into the Dupuy reservoir 2,500m below Barrow Island. If successful, the intended technology would reduce the LNG project’s CO2 emissions from 9.5 million tonnes per year to 3.5 million tonnes per year.
The Gorgon reservoir has 12.9tcf of gas in a water depth of 220m. It is also high in CO2 (in the 10-15% range) and is HT/HP (130 degrees c/360 bar). The Jansz Reservoir is lean with low co2 (1%) and is located in 1350m of water. There are plans to increase the capacity of the trains to 7/8 mtpa.
The Final Investment Decision was approved on 14 September 2009.
LNG Jetty and Marine Structures scope:
Includes design, material supply, fabrication, construction and commissioning of Australia’s longest LNG Jetty which includes supply, fabrication and construction of marine structures including a heavy lift facility, tug pens and navigation aids.
Operators:
Chevron Australia: Operator with 47% interest
Shell: 25% interest
ExxonMobil: 25% interest
Osaka Gas: 1.25% interest
Tokyo Gas: 1% interest
CHUBU Electric Power Co: 0.417%
Contractors:
Saipem Leighton Consortium:
Leighton Contractors
Saipem
Sub Contractor:
A Noble & Son Ltd – Perth: Lifting Gear and Rigging Equipment – General and Winch Ropes
Alltype Engineering: Stability Column Packers
Altona Plumbing: Supply and installation of services
Argyle Commercial Enterprises: Spill Kits
Aussie Fluid Power Ltd Pty.: Hydraulic Systems for Screed Frame (Jetty) and Water Pumps
Bellotti & Co.: Steel Formwork
Cal Dive International (Australia) Pty Ltd.: Diving Services
Coates Hire – Belmont: Misc. Equipment Rental
Coffey Environments Pty Ltd.: Asbestos Survey
Control Systems Technology Pty Ltd.: Ballast Weighing Platform (Load Cells)
Encee Electrical: Supply and installation of services
Holcim (Australia) Pty Limited: Rock Supply - 40/60 Ballast
Jumbo: Transported and discharged fourteen of the twenty-five MOF caissons for Saipem
KAEFER Integrated Services Pty Ltd.: Pipe cryogenic insulation
Kuehne & Nagel (Australia) Pty Ltd.: International Freight Forwarding Services
Leighton Engineering: Provision of Marine and Naval Architecture engineering support services
Mammoet Australia: Cranes
Miclyn Express: Support construction activities
National Maritime Services Pty Ltd.: Modular Barges for Diving Platform
Spiers Earthworks: Earthworks and pavement
Strategic Marine Pty Ltd.: Punts
Tanks West Pty Ltd.: Tanks for Treatment of Effluent and Water Tanks
Transair Two Way: Radio Communication
Trelleborg Marine Systems Melbourne Pty Ltd.: Docking Aid System, Mooring Systems and Load Monitoring System
United Industries WA: Miscellaneous Metalwork and Stone Spreader
Verhoef Aluminium Scheepsbouw Industrie BV: Gangway Towers
WA Civil Contracting Pty Limited: Earthworks and pavement
Western Plant Hire: FEL and Excavator Hire