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Prelude Floating Liquefied Natural Gas (FLNG) Development
Construction of Shell’s innovative Prelude FLNG facility is in progress and once complete it will be deployed off the northwest coast of Western Australia to extract and process gas from the Prelude and Concerto gas fields.
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.
|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.
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.