An interim alliance was formed between the major players.
The full alliance was formed and the project was sanctioned.
The first sod was turned at Bunbury.
The six month casting basin excavation at Bunbury is well underway, with excavation of 450,000 cubic metres of material. While 150,000 cubic metres was able to be used for hardstand areas and car parks on the site, the balance was used for a local landfill reclamation project.
The CGS base is completed and storage cells begin to take shape after only four months of construction. At this point the CGS design was altered to allow a 33% oil storage capacity increase.
The first two shafts of the CGS have reached the commencement of the “bulge” section where wall thickness changes as the geometry of both the inside and outside walls changes.
A majority of topside assembly was completed at ground level. Flat panel assembly and substantial prefabrication was employed in the topside construction.
The CGS shafts were topped out in May 1996 allowing electrical and mechanical fit out and installation of pipe work to progress.
CGS construction completed, the controlled casting basin flooding begins.
The tow of the CGS out of the casting basin begins. It took the CGS 24 days to reach its destination 75 kilometres north-west of Dampier.
Strandjacks were used to raise the topside for placement onto a transport frame — put in place by the Asian Hercules.
After being anchored into position the CGS installation sequence commenced by lowering one edge to the sea floor. Finally positioned, the tasks of adding 40,000 tonnes of rock ballast to open cells and rock armouring to prevent scouring of the base, were undertaken.
Once on the transport frame, the topside was loaded onto the barge Ocean Orc for transport to the Wandoo site.
The topside is guided into position over the CGS.
A support leg is positioned over the CGS shaft prior to mating.
Once the topside was in place on the CGS the barge and transport frame are towed clear.
The drilling rig was repositioned over the topside to complete the well drilling Wandoo B begins to produce oil.