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Allseas maiden pipelay project in China, comprising the installation of multiple pipelines and structures for the deepwater Lingshui 17-2 gas field development in the South China Sea.
Company : Chinese Offshore Oil Engineering Company (CNOOC)
Location : 150 km south of Hainan Island, South China Sea
1535 m
Max water depth
Scope of work
- Installation of 90 km, 18-inch export line with PLET at the deep end
- Installation of 4x 10-inch flowlines (in total 53 km) & 6 PLETs (J-mode)
- Installation of 3x 4.5-inch MEG lines (in total 19 km) & 6 PLETs (S-mode)
3x 4.5-inch
MEG lines
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Specials & challenges
- Allseas’ first project in China
- Installation of 2.3-km, 4.5-inch pipeline in 500 m water depth with PLETs floating at both ends
- Short preparation time (less than 6 months)
- Testing weather conditions (high humidity, large swells, typhoon season)
- High flexibility of 4.5-inch MEG lines
4.5-inch
MEG lines
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