Adelaide company Beach Energy Ltd. awarded a subsea installation contract for work at its Thylacine natural gas field in Production Licenses TL2 and TL3, Tasmanian sector, Otway basin to Norwegian group DOF Subsea.
The work, which is part of Phase 5 of the Beach-OG Energy joint venture’s Otway Gas expansion project, involves transportation of equipment to the site followed by installation of the subsea umbilicals, flexible flowlines, connectors, structures and rigid spools for four new wells being drilled on Thylacine field.
The work will be carried out using DOF’s support vessel Skandi Acergy and the contract is scheduled for completion by first-quarter 2023.
DOF was awarded a similar contract for Phase 4 of the Otway project in 2020.
The A$1 billion ($710 million) Otway expansion project involves two new wells in Geographe gas field in the Victorian sector of the basin and four wells in Thylacine. Drilling is being done with the Ocean Onyx semisubmersible rig. The Georgraphe wells have been completed and the rig has now moved to Thylacine.
The overall gas development consists of the two gas fields that tie back to an unmanned platform in 100 m of water. The gas is then piped about 80 km north to the Victorian coast where it is processed at the Otway gas plant near Port Campbell.