In the morning of August 28th, 2013, FrigstadDeepwater Rig Alfa, the biggest unltradeepwater semi-submersible drilling rig in the world with dual drilling towers,constructed by CIMC Raffles for FrigstadDeepwater Offshore, ushers its steel cutting in HCRO, said in the company's press release. HaraldFrigstad, the chairman of FrigstadDeepwater Company, the CEO Simen S Eriksen, and Mr. Yu ya,the president of CIMC Raffles jointlystart the steel cutting machine.
FrigstadDeepwater Rig Alfa belongs to the latest generation of ultra deepwater semi-submersible drilling rig and also is the second one constructed by CIMC Raffles for FrigstadDeepwater Company. This platform is a drilling rig with length of 177meters, width of 92.7 meters and height of 118 meters, maximum displacement of 70000 tons, maximum operating water depth of 12000 feet (3658 meters), drilling depth of 50000 feet (15250 meters) and dual top drives load of 1250sh.tons.Besides, it is equipped with DP3 dynamic positioning system. This platform enters into Norway Classification Society. It owns spacious efficient space and convenient maintenance access and for the first time, employs DP3 enclosed circle design, detritus cabin processing and storage system and ballast water treatment system. What’s more, due to its NOV hydraulic dual towers design, its production efficiency will be highly improved on the basis of security guarantee. This drilling rig is workable in multi deepwater areas, such as Mexico Gulf, China South Sea, Australia, BrazilSea, West Africa and South Atlantic etc.
Its basic design is provided by Frigstad Engineering Company and detail design, construction design, construction and commissioning work will be borne by CIMC Raffles. Besides, CIMC Raffles will independently complete the installment and commissioning of the entire drilling system.CIMC Raffleswill continue to employ the unique construction mode,that is, carrying outparallelconstruction of deckbox and lowerhulland fulfilling mating by 20,000 tonsgantry crane. This platform is scheduled to be delivered at the end of 2015.