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First Subsea pipeline tool for Ichthys LNG

LNG Industry,

First Subsea has been awarded a contract by Saipem Portugal to supply a 42” PRT (pipeline recovery tool) for the Gas Export Pipeline on the Ichthys LNG Project.

The contingency tool is First Subsea’s largest modular PRT, and features a 400Te WLL Hyperlast™ twin seal dewatering system, check valve, pig catcher, pig signaler and an ROV deployment arm.

Subsea pipeline

The Ichthys LNG Project includes an offshore central processing facility (CPF) and a Floating Production Storage and Offloading Facility (FPSO) located in the field, with a number of satellite manifolds and subsea wells tied back to the CPF. Saipem is installing 889 km of 42” diameter subsea pipeline, in water depths of up to 275 m, connecting the CPF to an onshore processing facility in Darwin.

The modular PRT system is suitable for pipe or tubular diameters of 42”, 48”, 54” and 60” using First Subsea’s patented Ballgrab® ball and taper grip technology for loads in excess of 1200Te WLL. Guided by an ROV through deployment by the vessel crane, the PRT is inserted into the pipe and a secondary lock system activated through a hydraulic ROV hot stab. After the connection between the A&R wire to the PRT is established, the pipe and tool are then ready for recovery back to the surface.

Ichthys LNG

The Ichthys LNG Project is a joint venture between INPEX group companies, Total, and the Australian subsidiaries of Tokyo Gas, Osaka Gas, Chubu Electric Power and Toho Gas.

Adapted from press release by Katie Woodward

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