PRODUCTION • PROCESSING • HANDLING
SECTION TITLE
TECHNOLOGY G
MEGA-PROJECT Peter Johnson explains why a big LNG project calls for an engineered solution Guide tubes
lobally, this particular LNG project is a very signifi cant, large and technically complex, energy development. In essence, the
project is ingenuity at its best. Innovative technologies have been used where possible to deliver this project and ensure that once in operation, it continues to run with little to no downtime. Located about 220km off shore Western
Australia, the fi eld represents the largest discovery of hydrocarbon liquids in Australia in 40 years. T is LNG project is currently in construction and is ranked among the most signifi cant oil and gas projects in the world. It is eff ectively three mega-projects rolled into one, involving some of the largest off shore facilities in the industry, a state-of-the-art onshore
the responsible classifi cation society. Off shore facilities consist
processing facility and an 890km pipeline uniting them for an operational life of at least 40 years. In operation, it is expected to produce at capacity up to approximately 8.9 million tonnes of LNG per annum and 1.6 million tonnes of LPG per annum, in addition to about 100,000 barrels of condensate per day at peak. A Final Investment Decision was reached in 2012 and fi rst production is scheduled to commence towards the end of 2018/beginning of 2019.
FABRICATION T e construction work for the off shore facilities was carried out at a shipyard with
of a CPF (Central Processing Facility) and an FPSO (Floating Production Storage Offl oading). On the CPF there are several risers and riser guide tubes that will be placed around the facility. Due to the size of the columns, they need housings to ensure alignment. T ere have been concerns that movement of the columns against the housings will cause erosion- corrosion and impact. As the CPF has a design life of 40 years, it was decided to protect the columns and housings with composite bearings. Composite bearings are generally installed around propulsion areas on ships. T ere are several ways to install bearings, however once they reach a certain size, the
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