DOF Subsea Australia has been awarded a contract by energy company Woodside to provide transportation and installation services in support of flowline installation operations on the North West Shelf, Australia
DOF will provide project management, engineering, transportation and installation services for work at the Cossack Wanaea Lambert and Hermes fields, with completion during Q3 2021. DOF Subsea Australia will deploy dive support vessel Skandi Singapore for the project.
Equipped with an in-built saturation diving system and 140-tonne active heave compensation crane, Skandi Singapore was built in 2011 based on an STX DSV 06 design, with an overall length of 107.1 m, beam of 21 m, draught of 6.6 m, a deck of 900 m2, deck capacity of 2,000 tonnes, with accommodation for 100.
The Okha floating production, storage and offloading (FPSO) vessel extracts, processes, stores and offloads oil and export gas from the Cossack, Wanaea, Lambert and Hermes fields. Oil is dispatched from the FPSO to trading tankers while export gas is transported via a 32-km gas export line to North Rankin Complex (NRC). Gas is subsequently transported from the NRC to the Karratha Gas Plant via two 130-km trunklines.
The offshore production system consists of subsea wells, wellheads, Xmas trees, manifolds, umbilicals, flowlines and risers, a riser turret production and mooring system, the FPSO and the gas export line.
The Woodside contract follows an announcement by DOF Subsea two days earlier of two contracts in the Asia Pacific region, securing backlog for its onshore team and offshore fleet. The first project involves saturation diving and will see Skandi Singapore deployed for three to four weeks starting early Q4 2020.
DOF Subsea said the second award is for onshore preparation and planning for a decommissioning project, with further possible offshore work in 2021.
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