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Installation of production flowlines, diverse utility pipelines and structures for the deep-water Gorgon LNG expansion project, off the coast of Western Australia.
Company : Chevron Australia
Location : Northwest Shelf, Western Australia
1340 m
Max water depth
Scope of work
- Installation of 47 km of production flowlines, monoethylene glycol & utility pipelines
- Installation of 12x PLETs
- Supply, fabrication & installation of anti-burial mattresses, buckle initiator sleepers & active pipe supports
- Span correction
- Flooding, cleaning, gauging & hydro testing (FCGT) of all pipelines
47 km
production flowlines
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Specials & challenges
- Pipeline head removal using laydown head removal frames
- Production flowlines cladded with corrosion resistant alloy
- First job in Australia for Fortitude
- Upgrades to Alegria to carry monoethylene glycol
- Deep-water installation close to live assets
- Complex deep-water FCGT campaign with specialised flooding mediums
- Extension of original Gorgon-Jansz development, for which Allseas executed the installation scope
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