Sweden-based engineering group Trelleborg’s oil and marine hoses operation has launched a new seawater intake unit designed to serve floating liquefied natural gas (FLNG) extraction facilities.
The new Swiline range of hoses can be used in lengths of 600m or greater, enabling use of seawater from greater depths for the liquefaction process.
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Trelleborg oil and marine hoses project manager Jonathan Petit said: "FLNGs offer the potential to effectively extract vast amounts of LNG for industrial and domestic use but to do that, and ensure the LNG is transported as cost-efficiently as possible, effective cooling is crucial.
"This means using seawater which is as cold as possible. This therefore needs to be extracted from greater depths and pumped in higher volumes than is the case with FPSOs, for example."
Swiline hoses have been designed to deliver optimum performance even in demanding process conditions and are certified to the API 17K standard.
The hoses are designed to incorporate an integrated bending stiffener with a continuous inner liner and rubber outer cover, reduce the risk of corrosion while offering optimal thermal insulation.
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By GlobalDataSwiline hoses can be easily installed vertically from the FLNG deck and can be assembled beside the hull with connection on the intake flange by divers, or in the riser caisson.
They are available in diameters ranging from 24in to 40in ID.
Trelleborg said that the Swiline range has already been qualified for the $12.6bn Shell Prelude project in the Timor Sea, where production is set to begin in 2017.
In addition to FLNGs, the new technology can also optimise the topside architecture on FPSOs by collecting cool water from up to 1,000m below sea level.
