In EPT published by Wilhelm Sicking, Feb 27, 2016

Heerema concludes Ichthys infield installations

Feb 25, 2014   + + +  Heerema Marine Contractors (HMC) has completed the infield flowlines installation scope for INPEX’s Ichthys LNG project offshore northwest Australia.

McDermott, the main contractor for the umbilical, riser and flowline project, subcontracted HMC for transportation and installation of the infield flowlines, subsea structures, and moorings.

Last week HMC’s deepwater construction vessel Aegir set down the final 18-in. production flowline on the seafloor.

During the campaign the new vessel demonstrated its capabilities in heavy lift, J-lay and reel-lay, performing:

Installation of 53 km (33 mi) of 6-in. and 8-in. carbon steel MEG and 12-in. corrosion resistant alloy (CRA) clad condensate flowlines via the reeling method

Inline installation of 14 flowline end terminations (FLETs) and three inline tees (ILTs)

Onshore prefabrication and spooling onto heavy-lift reels at an HMC-designated spooling base in Batam, Indonesia

Offshore loading of full reels with weights up to 3,185 metric tons (3,511 tons) using the Aegir’s 4,000-metric ton (4,409-ton) heavy-lift crane

Installation of 87 km (54 mi) of 18-in. CRA production flowlines via the J-lay method

Inline installation of 12 FLETs weighing up to 217 metric tons (239 tons) and 6 ILTs, weighing up to 197 metric tons (17 tons)

Onshore prefabrication of around 1,750 18-in. CRA quad joints, of 4.8 m (15.7 ft) nominal length.