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The Prelude FLNG development in Australia will be Shell’s first deployment of its FLNG technology. The technology allows for the production, liquefaction, storage and transfer of LNG at sea, as well as the ability to process and export liquefied petroleum gas (LPG) and condensate. Prelude will be located in the Browse Basin, approximately 475km north-northeast of Broome and over 200 km from the nearest point on the coast of the remote Kimberley region, in Western Australia.

The Prelude natural gas field was discovered by Shell in 2007 with an additional field, Concerto, discovered nearby in 2009. Combined, these gas fields have around 3 trillion cubic feet of liquids-rich gas.

The Prelude FLNG facility will be 488m long and 74m wide, weighing more than 600,000 tonnes fully ballasted - roughly six times as much as the largest aircraft carrier. Some 260,000 tonnes of that weight will consist of steel - around five times more than was used to build the Sydney Harbour Bridge.

Safety of the Prelude FLNG facility has been paramount during its design, and its safety is on par with modern offshore oil and gas facilities. The FLNG design includes a number of key safety features including the layout (and separation) of hydrocarbon processes from accommodation modules, enlarged safety gaps between process modules, fire-proof protective coatings and specially designed product loading arms.  In addition, Lloyds Register has conducted an independent safety review of the Design Safety Case and relevant final safety assessments.

Prelude is proudly operated by Shell in partnership with INPEX (17.5%), KOGAS (10%) and OPIC (5%).

The Prelude FLNG facility is anticipated to stay moored at location for 25 years, and is expected to produce 3.6 million tonnes per annum (mtpa) of LNG, 1.3 mtpa of condensate and 0.4 mtpa of LPG for export.

Key facts

Key facts

Location: Browse Basin, Australia
Water Depth: ~250 metres
Category: Floating liquefied natural gas
Interest: Shell 67.5%, INPEX 17.5%, Kogas 10%, OPIC 5%
Fields: Prelude and Concerto
FLNG facility production capacity: 5.3 million tonnes per annum (mtpa) of liquids: 3.6 mtpa of LNG, 1.3 mtpa of condensate and 0.4 mtpa of LPG
Key contractors: Technip Samsung Consortium


To meet the world’s growing energy demands, bringing new supply sources to market is critical. Gas resources are plentiful and geographically diverse. Globally we see strong demand for natural gas – the cleanest-burning fossil fuel. FLNG technology is an important development for the LNG industry as it potentially reduces the project costs and environmental footprint of an LNG development, opening up new business opportunities for countries looking to develop their gas resources and bring more natural gas to market.

Benefits for Australia

Prelude and Shell’s FLNG technology will be a key part of the Australian LNG industry and will bring significant benefits to Australia.

Prelude hull float

After 14 months of construction, the Shell Prelude FLNG project continues to create history. Watch the video.

The Project Takes a Giant Step Forward

After months of construction the Prelude team faces its greatest challenge yet. The two giant sections of the hull are complete; now they must join together. Watch the video.