In the Exmouth sub-basin, offshore Northwest Australia, Apache Energy ltd. is developing the Van Gogh oilfield on behalf of a joint venture of the same name.
‘As part of the Vincent field, it lies in water depths of 1,115.5 to 1,214 ft. An FPSO will be used for production and storage of the oil. The FPSO will be moored to a disconnectable turret-mooring (DTM) buoy, moored to the seabed with nine anchors. Flexible flowlines, which connect to two subsea manifolds and the production wellheads, will be attached to the buoy. In the event of storms or cyclones, the FPSO will be able to disconnect from the buoy and sail to calmer waters. The offshore installation contractor for the Van Gogh project, Acergy Australia pty ltd., asked Jumbo to take care of the transportation of the massive DTM buoy from Singapore to the Exmouth gulf, delivering sub-sea equipment to the subsea installation vessel mv Toisa Proteus, and demobilizing equipment from the Toisa Proteus to Singapore. Beside the normal engineering procedure, additional planning was required in the preparation phase of the project.