Scarborough
http://www.exxonmobil.com.au
natural-gascamp, FiFo
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The Scarborough Gas Project, is the farthest gas field in the CarnarvonBasin, located off the coast of northern Western Australia, 220 kilometresnorth west of Exmouth. It is owned as a joint venture operation betweenEsso Australia Resources Pty Ltd, a fully owned subsidiary ofExxonMobile and BHP Billiton.
Scarborough Gas Field Discovered in 900 Metres of Water in 1979
The Scarborough gas field was discovered in 1979 in 900 metres ofAustralian controlled waters in the Indian Ocean. The project is under themanagement of ExxonMobil which is considering development of the fieldby use of a Floating Liquefied Gas (FLNG) processing, storage and gasoff-loading facility.Scarborough FLNG will Load Gas Tankers at Sea
The FLNG being proposed will be about 495 metres in length and 75metres in width and be able to process between six and seven milliontonnes of liquefied natural gas (LNG) annually from five on-boardprocessing trains. The FLNG, that will have a doubled hulled bottom andsides, will be permanently fixed to the seabed. The gas will be loaded onto visiting LNG carriers from a loading facility located behind the FLNGitself. It is estimated offloading of LNG will take place between six andnine times every month throughout the year.Scarborough to Have a Total of 12 Production Wells
It is planned to drill 12 gas production wells within the Scarborough gasfield in two phases. Phase one will involve the drilling of seven production wells between 2018 and 2019 with a further five wells to be drilled during the following 15 years after project start up. The drilling of these wells will be known as phase two. During 2019 and 2020 it is envisaged the installation of underwater infrastructure will take place. This installation will include the tie back of the production wells to the FLNG vessel as well as the installation of flowlines, risers and umbilicals. Scarborough Project commissioning is due to occur during 2019 and 2020 along with the offshore installation. LNG commercial gas production is expected to take place during the 2020/21 financial year and is expected to continue for the next 25 to 35 years.The Scarborough gas field project, that will cover an area of around 30hectares, approximately one percent of the total lease hold, containsbetween eight and 10 trillion cubic feet of lean gas with no measurablequantity of condensate. Because of this it is not expected the returns will contain any condensate.
Once the FLNG vessel is in place at the Scarborough gas field site, it will be connected to the seabed moorings and the turrent system, with the use of equipment, barges and support vessels specialised in this type ofoperation. The mooring lines themselves will consist of 24 steel chainsanchored to either suction or impact piles anchored deep into the seabed.The piles will weigh between 140 and 180 tonnes each and be six metres indiameter. The FLNG vessel itself will be permanently moored at the site and designed to survive all weather conditions.
