SEMAC-1 Commences Export Pipeline Installation for Ichthys LNG Project
Inpex Corporation reported Monday that the Inpex-operated Ichthys liquefied natural gas (LNG) Project commenced gas export pipeline (GEP) installation works June 28, following the earlier arrival of the Saipem-operated, semisubmersible pipelay barge SEMAC-1 in the Northern Territory, Australia.
The Project’s 552 mile (889 kilometer) GEP will connect the onshore processing facilities near Darwin to the Ichthys gas-condensate field in the Browse Basin, offshore Western Australia.
Managing Director Ichthys LNG Project Louis Bon said that the SEMAC-1 had officially started the 102 mile (164 kilometer) shallow water pipelay component of the GEP installation, which includes laying the first 11 mile (18 kilometer) section of 42-inch diameter pipe through Darwin Harbour.
“The gas export pipeline will deliver gas and some condensate from our offshore central processing facility to the Ichthys LNG Project onshore facilities at Bladin Point near Darwin so that it can be processed for export,” Bon said.
“The commencement of the pipelay work means we are starting to physically connect our home base in Darwin to the Ichthys gas-condensate field where our semisubmersible offshore facilities will be permanently moored for the life of the Project.”
Working from east to west in Darwin Harbour, the SEMAC-1 will first feed pipe to the Project’s landfall site for a 1.8 mile (3 kilometer) shore-pull. This work supports the onshore component of the GEP, which will stretch about 4.3 miles (7 kilometers) from the beach valve at Middle Arm to the Bladin Point onshore processing facilities.
The SEMAC-1 is scheduled to be in Darwin Harbour for about four weeks. In total, the 102 mile (164 kilometer) shallow water pipelay installation is scheduled to take about 80 days. Once completed, the SEMAC-1 will transfer work to Saipem’s deep water installation vessel, Castorone, which will lay the remaining 446 miles (718 kilometers) of pipe to the Ichthys gas-condensate field.
International oil and gas contracting service provider Saipem is the engineering, procurement, construction and installation (EPCI) contractor for the Ichthys LNG Project’s GEP and has extensive experience on similar large diameter pipeline projects around the world.
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