Simulated Maneuver of Shell’s Prelude FLNG Facility
At 488m in length, and longer than four football pitches, Shell’s Prelude FLNG facility was always going to represent a formidable challenge even for the skilled tug masters who were charged with towing the facility from the shipyard in South Korea where it was constructed, and delivering it to its final destination, a remote gas field 475 kilometers off the coast of Western Australia.
HR Wallingford’s involvement in the project extends to the real time navigation simulation for the facility’s departure from the Geoje Shipyard in Korea, along the Busan Channel; positioning and mooring Prelude once on site; conducting berthing and departure simulations of the LNG, LPG and condensate offtake tankers that will moor alongside the FLNG; and providing ongoing pilot and tug master training in the Australia Ship Simulation Center in Fremantle.
HR Wallingford also created and provided to Shell Australia a bespoke, web-based decision support tool, to assist with operations planning.
The Prelude FLNG facility is expected to develop gas fields for the next 25 years, extracting natural gas from wells, which is liquefied and chilled to −162 °C. Offloading liquefied natural gas from large FLNG facilities provides a significant innovation, cutting costs and eliminating the need for long pipelines to onshore LNG processing plants.