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Sembawang conversion enables deeper drilling

Sembawang conversion enables deeper drilling

Singapore: Sembawang Shipyard reports successful completion of major upgreade work to drillship 'Aban Abraham'. Dutch design office Ulstein Sea of Solutions has been responsible for the concept and basic design of the upgrade to operate the DP vessel in deeper waters up to 6,600 feet.

The upgrade work on the Pelican-class vessel, owned by Aban Abraham Pte. Ltd., included a.o. widening of the beam by adding sponsons on both sides of the drillship to compensate for additional weight and provide sufficient buoyancy. A total of 3,500t displacement was gained by adding the sponsons, increasing deadweight capacity with an additional 1,400t.

The vessel's capacities for riser tensioning, riser storage, riser handling and mud storage has subsequently increased significantly to deal with the increased waterdepth. The upgrade also involved a new substructure with an increased drillfloor height and an increase in power generating capacity including a complete new power distribution and automation system.  [03/10/08]

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