Sevan Driller

In June 2010, UDW Sevan Driller became the world’s first cylindrical drilling rig to commence operation. The rig is currently operating under a six year contract for Petrobras S.A. offshore Brazil.

Petrobras S.A is a national oil company founded in 1953 by the Brazilian government. Petrobras has been ranked as the world‘s 3rd largest public energy company and 8th largest company in the world in market value, and closed 2010 with a production of 2.2 million bpd of oil and LNG and 0.4 million boepd of gas.
  • Design:Sevan 650
    Building year:2009
    Yards:Cosco Shipyard, China
    Client:Petrobras S.A.
    Contract:6 year fixed
    Field/area:Pre-salt Brazil
    Start operation:Q2 - 2010
    RegistrationSingapore
    ClassificationDNV
  • Water depth3,000 m (10,000 ft, upgradable to 12,000 ft)
    Drilling depth12,000 m (40,000 ft)
    LOA (Length)86 m
    Breadth75 m (at waterline)
    Depth24.5 m
    Displacement55,800 mT at 12.5m draft
    Variable deck load20,000 mT
    Diesel generators8 x 5,535 kW
    Thrusters8 x 3,800 kW
    Station keepingDP3
    Living quarters150 persons
    Helicopter deckSikorsky S92 and S-61N, Superpuma AS332L2, EC225 and EH-101
    Deck cranes2 ea, max capacity: 100 mt at 15 m
    Oil storage150,000 bbl
    Mud storage2,850 m3
    Transit speed7-9 knots
    Deck area5,700 m2
    Riser tensioning systemDAT - 3,200 kips
    Drilling lifting capacity1,000 ton
    Set back load1,000 mT
  • TypeParallel operations. Independent handling of BOP and X-mas trees
    Hook load, main/aux908 mT
    BOP18 3/4", 15,000 psi, 5-6 rams (upgradeable to 7)
    Mud pumps4 x 2,200 hp, 7,500 psi