Shell Technology PRELUDE TURRET MOORING SYSTEMS Discipline Product Line Project TMS The Prelude Turret Mooring System is a key component of Shell Australia’s floating liquefied natural gas (FLNG) facility, which will be deployed at the Prelude gas field off the North West coast of Australia. Moored some 200 kilometres from the nearest land, the Prelude FLNG facility will produce gas from offshore fields and liquefy it onboard via a cooling process. The Shell Prelude FLNG facility will be the largest floating offshore facility in the world, measuring 488 metres long and 74 metres wide and weighing close to 600,000 tonnes. The TMS’s overall dimensions exceed 30 metres in diameter and is almost 100 metres in height. The facility will be able to withstand the extreme weather conditions experienced in the North West of Australia including a 1 in 10,000 year storm – which exceeds a category five cyclone. Australia Turret Delivery 2015 Key Facts Facility Name: Prelude Type: FLNG Mooring Type: Internal Turret Client: Shell Field: Prelude Water Depth (m): 250 m Environment: Harsh environment No. of Risers: 14 + 6 umbilicals Mooring arrangement: 16 lines (4 x 4), Suction piles Mooring legs: Chain, sheathed S-S wire rope Turret height: 94 m Swivel stack: 9 units Stack height: 19 m Capacity in MTPA (Million Tonnes Per Annum): LNG : 3.6 MTPA LPG : 0.4 MTPA Condensate : 1.3 MTPA Provides safety and reliability for the world’s largest floating offshore facility The World’s largest floating facility
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Shell
TechnologyPRELUDE
TURRET MOORING SYSTEMS
Discipline Product LineProject
TMS
The Prelude Turret Mooring System is a key component of Shell Australia’s floating liquefied natural gas (FLNG) facility, which will be deployed at the Prelude gas field off the North West coast of Australia. Moored some 200 kilometres from the nearest land, the Prelude FLNG facility will produce gas from offshore fields and liquefy it onboard via a cooling process. The Shell Prelude FLNG facility will be the largest floating offshore facility in the world, measuring 488 metres long and 74 metres wide and weighing close to 600,000 tonnes. The TMS’s overall dimensions exceed 30 metres in diameter and is almost 100 metres in height. The facility will be able to withstand the extreme weather conditions experienced in the North West of Australia including a 1 in 10,000 year storm – which exceeds a category five cyclone.
Australia Turret Delivery 2015
Key Facts
Facility Name: Prelude
Type: FLNG
Mooring Type: Internal Turret
Client: Shell
Field: Prelude
Water Depth (m): 250 m
Environment: Harsh environment
No. of Risers: 14 + 6 umbilicals
Mooring arrangement: 16 lines (4 x 4), Suction piles
Mooring legs: Chain, sheathed S-S wire rope
Turret height: 94 m
Swivel stack: 9 units
Stack height: 19 m
Capacity in MTPA (Million Tonnes Per Annum):
LNG : 3.6 MTPALPG : 0.4 MTPA Condensate : 1.3 MTPA
Provides safety and reliability for the world’s largest floating offshore facility
The World’s largest floating facility
The Turret Mooring System’s primary function is to keep the Prelude facility on station, and limit excursions to protect its riser-system which receives gas from the subsea architecture. Four groups of four mooring lines secure the Prelude FLNG to anchor points at water depths of 250 metres which.
Specifically designed to allow the facility to remain on station for 25 years in extreme weather conditions, the turret allows the vessel to weathervane around its moorings. SBM’s proprietary turret design consists of five modules – all of which were delivered to SHI’s Goeje shipyard for integration into the hull.
TURRET, MOORING AND RISERS
Supports the mooring system, risers and umbilicals
Swivel stack permits fluid transfer from subsea system to topsides
Resists loads under the most extreme weather conditions
TURRET MOORED FLNG
360° weathervaning
The sole intention of this Factsheet is to share general information. © SBM Offshore 2016.
All rights reserved. www.sbmoffshore.comApril 2016
Contact Details [email protected]
Prelude TMS: At a glance
The Prelude Turret Mooring System is designed to withstand category 5 cyclonic conditions
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