Drydocks World completes major refurbishment of NDC' s jackup Al Ghallan
DUBAI -- Drydocks World has reported the completion of a major refurbishment carried out on National Drilling Company’s (NDC) offshore drilling rig Al Ghallan. The project is part of a series of four rig repair and refurbishment projects signed with NDC in 2013. Before that, eight projects were completed. The numbers of projects carried out for NDC have progressively increased over the years.
Drydocks World has successfully dry-docked, repaired and refurbished 125 Offshore Platform Vessels (OPV) belonging to major companies. The shipyard also has extensive experience on drilling rigs and jackup drilling units. There are instances where a basic hull structure was transformed into a complete OPV with newly fabricated bracing legs, columns, spud cans, accommodation structures and jackup and drilling systems.
“These major refurbishment projects performed in parallel with the fleet expansion plans to obtain new and advanced offshore and onshore rigs are contributing considerably in strengthening NDC’s operational excellence and sustaining the maximum levels of safety, environment protection and effective performance. This will certainly enable NDC to serve its clients competently and always meet their operational requirements and achieve their satisfaction,” said Abdalla Saeed Al Suwaidi, CEO of NDC.
The Al Ghallan rig is a self-elevating cantilever type Mobile Offshore Drilling Unit with three triangular lattice type legs, which are 234 ft long. The work carried out on the rigs include modification of three spud cans of 160 tonnes each, including replacement of cathodic protection, painting, placing height markings, carrying out an inclining experiment and updating the rig’s operating manuals. Nearly 55 tonnes of steel were replaced in the tanks.
Major refurbishment was carried out on the accommodation. The rig’s three cranes were dismantled and overhauled. High pressure Koomey lines were replaced. Pipes around the rig were revamped. An engineering study was carried out based on which the ventilation in the Sewage Treatment Plant and transformer room were improved. Cantilever skidding gears, air hoists, air tuggers, raw water tower elevation system, gears and bearings and dump and equalizing valves were overhauled. Other work included MPI inspection of legs, painting of the derrick and blasting and painting of hull, tanks and mud pits.