Prelude FLNG To Fill One ShipBorne Cargo Every Week

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  • Prelude FLNG, the world’s largest floating producer of LNG will fill one shipborne cargo every week.
  • Markets and the supply chain have changed and now, Prelude FLNG has changed them further.
  • By comparable offshore gas projects the first LNG carriers might expect to pick up cargoes by mid-February.
  • Australia boasts eight substantial LNG export installations and has surpassed Qatar, for now, to become the world’s top LNG producer.
  • Engineers and workers from hundreds of suppliers provided the grind of minds and onboard cacophony that changed criticism into admiration.
  • LNG imports are set to more than double to 2040.

When at plateau production, Prelude FLNG — the world’s largest floating producer of liquefied natural gas, or LNG — will fill one shipborne cargo every week says, an article in Offshore Engineering.

Australia to top LNG sales

As production ramps up from test volumes, there’s the realization of a dramatic shift in LNG markets. Criticized in Australia when gas glut threatened, Prelude FLNG plodded on from decision gate to first gas in December 2018.

Now seems the master stroke that’ll ensure Australia remains atop world LNG sales. More than ever, large-scale FLNG looks every bit the nation-builder that oil has been.

Delayed announcement

There’s always uncertainty in newness though the market is served with excellent analytical data. Shell (on behalf of partners Inpex, CPC and Korea Gas) appeared to delay the announcement of Prelude’s first volumes despite keen interest:

“I’m sure you can appreciate the volume of global enquiries we receive on Prelude … is immense, and given the time of year, it’s especially busy for those of us working,” Shell spokesperson, Rachael Power, told Offshore Engineer.

Project scheduled

On Christmas Day, the world’s largest offshore floating facility began filling its remaining two (of six) liquefied natural gas (LNG) storage tanks while testing the vast complex of process plant on board.

Incessant delay linked to project scale seemed at an end. Commissioning in early December led to ramp-up by New Year’s, and now the project is scheduled to “plateau” producing 3.6 million tonnes of LNG per annum; 1.3 MMtpa of light oil and 400,000 tonnes a year of liquefied petroleum gas (LPG) by 2020.

Cost remains undisclosed

Judging by comparable offshore gas projects, the first LNG carriers might expect to pick up cargoes by mid-February.

“We don’t comment on costs of our projects and comparisons with others or schedule but will ship our first cargo when we are ready and it is safe to do so,” Powers wrote in an email.

Prelude’s operations crews had already practiced ship-to-ship transfers, when export process kit was used to “import” a delivery of test volumes.

A changed market

The business is not as usual for FLNG these days as markets and the supply chain have changed. Now, Prelude FLNG itself has changed them further.

When the first FLNG projects were announced in 2012, “global” gas glut was the consensus picture even as LNG markets became “increasingly regional”. The FLNG project count was low: a few regional projects and the prospect of Woodside’s Prelude-like Browse FLNG.

Confidence, however, is back, and the LNG supply chain’s growth is lifting all boats. Midstream player Awilco LNG told analysts in September 2018 that, “the market turned in 2018 after four miserable years.”

World’s top LNG producer

So, Prelude joins a “maturing” FLNG market still fixated largely on richer gas prices in pipeline-poor Korea, Japan and China. The market is enabled by a smallish network of process engineers offering front-end engineering design (FEED) although alliances once made with liquefaction contractors no figure prominently in annual reports, perhaps in light of Prelude’s success.

Australia can boast eight substantial LNG export installations and has surpassed Qatar, for now, to become the world’s top LNG producer. China, meanwhile, is closing in on the No. 1 importer title. Soaring Indian demand, too, is good news for Prelude.

LNG imports

As offshore operators get to know their FLNG supply chain, China and India are rapidly amassing alternate suppliers of gas that include the ExxonMobil-led PNG LNG, Yamal and BP. With Prelude FLNG, China, Korea and Japan gain a supplier of scale to mitigate disruption and stir (or stifle) competition.

Beijing’ 10% tariff on U.S. LNG also bodes well for Prelude cargoes, and the Energy Information Agency says China is set to expand its already substantial 17 LNG import terminals and their combined regas capacity of 7.4 billion cubic feet per day.

India, Shell’s LNG Outlook 2018 says, will, by 2022, increase its LNG imports to 70 MMtpa from today’s 500 MMtpa. Korea has its own “go-greener” program and wants more LNG.

Supplier transformation

What Prelude signals the most, perhaps, is the supply chain’s ability to help make large-scale FLNG as viable as newer, small-scale FLNG and even land-based LNG.

At Prelude, Shell’s worldwide gas-trading operation and Asia’s proximity to Australia justify scale, and the facilities economies of scale are now insurance for when prices fluctuate.

Liquefaction solutions backed

Back in 2012 the year of FLNG project go-aheads, the supply chain was busy protecting patents, forming alliances and learning from operators, including Shell. Whether using refrigeration tech or exhaust processes, small-scale looked more “doable”.

Early movers rounded on their own remedies for converting hulls to LNG holds and gas to liquids. When Prelude was an idea, new liquefaction solutions from Britain, Germany, Japan, Norway and the U.S. seemed to stimulate consortia of contractors ready to offer FEED or deliver engineering, procurement and construction (EPC).

Maritime continent Asia might lack Europe’s network of interlocking pipelines, but “a FEED and an Asian yard” could get your FLNG project built, be it a converted hull or custom, barge-like vessel.

FLNG forge

It was during that fateful six-year span of frenzied FLNG bandwagonism that Prelude FLNG took shape.

In October 2012, the cutting of 260,000 metric tons of steel set the Technip Samsung Consortium to work at Samsung Heavy Industries shipyard in South Korea. Three short years later, a 488- by 74m floater left drydock for further fittings and sea trials.

Shell’s push to test the limits of FLNG had achieved that major milestone. Suppliers and rival operators had to marvel at the commercial power about to be harnessed. Once fully laden, the 600,000t vessel could supply all of Hong Kong’s LNG needs for a year.

“Shell is uniquely positioned to make it a success given our commercial capability,” Shell’s head of projects and tech, Matthias Bichsel, said when local Aussie criticism was at its loudest and smaller-scale LNG projects were being sanctioned elsewhere.

Bichsel and his expert teams, however, were bent on proving Prelude’s economies of scale. They had the LNG pedigree. Now they had a giant marine vessel to match their “LNG, offshore, deepwater and marine technology and our proven ability to successfully deliver megaprojects.”

Tech triumph

As 2018 wound down, production wells, mooring lines, two umbilical and four risers were joined to the moored turret designed by SBM. “This is the first of what Shell expects to be multiple Shell FLNG projects,” Shell proclaimed.

In Prelude’s wake, a number of other aspiring FLNG players appeared to roll-up development plans. With production plant now tapping Australia’s big gas fields, Prelude’s technological achievement is a high-water mark.

While the tech used offshore derives from years of onshore LNG, Shell also presided over new FLNG innovations to manage sloshing in LNG tanks; the coupling between wells and LNG plant; liquids off-loading; mooring systems and marine-proofing of process equipment like absorption columns and the facility’s main cryogenic heat exchangers.

More than 600 engineers and 5,000 other workers from hundreds of suppliers provided the grind of minds and onboard cacophony that changed criticism into admiration.

 

Turret a milestone

Prelude’s arrival in Australia in July 2017 kickstarted the era of extracting and liquefying gas well out to sea for simultaneous production to market. It also started the commissioning process for a turret mooring system designed and built by Dutch SBM Offshore at the invitation of Technip. A thousand workers will recall the scale in five modules that became the vessel’s 90-meter mooring column.

According to SBM spokesperson, Paula Blengino, the Prelude turret mooring system (TMS) represents a significant milestone in SBM Offshore’s gas experience and is a testimony to the technological expertise for turrets.

She said, “The Prelude FLNG is a Shell project.” The TMS’s main job is to keep Prelude on-station by allowing the vessel to weathervane around its moorings. That means fewer moves to protect the facility’s riser system.

Like so many Australian suppliers, SBM learned a lot aboard Prelude. Since the project, SBM, like the rest of the FLNG supply chain has matured.

Market growth

In November 2018, Australia overtook Qatar to become, for now, the world’s largest exporter of LNG. Eight LNG projects not called Prelude – Darwin, Gladstone, Gorgon, Ichthys, Queensland Curtis, Northwest Shelf, Pluto, Wheatstone – helped bring that about.

As the Prelude FLNG Marine Terminal begins production, Chinese demand is creating a growing LNG supply gap the project will help close. It’s a changed market since the days of Australia’s first LNG projects, or from 2012, when FLNG was a new term.

Beyond 2018 – a year of Awilco LNG said saw 40% more LNG production – LNG carrier rates look set to rise along with LNG prices to beyond 2023 (EIA). Beyond that, LNG imports are set to more than double to 2040. Prelude’s scale should come in handy.

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Source: OEDigital

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