Transocean Marianas was an Earl & Wright Sedco 700 design semi-submersible platform drilling unit capable of operating in harsh environments and water depths up to 7,000 feet (2,100 m) using a 47.6 cm (18.75 in), 15,000 psi blowout preventer (BOP), and a 53 cm (21 in) outside diameter (OD) marine riser.

Deepwater drilling takes place far from the coast in water depths of more than 4,500 ft. Semisubmersibles, such as Transocean's Sedco 700 series, are fitted with large, buoyant pontoon structures below the water surface and columns passing through the water surface supporting the platform deck at a significant height above the sea surface.

2020年1月18日 · The Sedco 700 drilling rig is owned by Transocean Inc. which can be contacted for jobs and careers on the Sedco 700. The Semisub is a Semisub type of rig and is designed as a Earl & Wright/Sedco 700 Series and built by Levingston Shipbuilding at the …

Discover the vessel's particulars, including capacity, machinery, photos and ownership. Get the details of the current Voyage of SEDCO 700 including Position, Port Calls, Destination, ETA and Distance travelled - IMO 8755106, MMSI -8755106, Call sign.

1996年4月30日 · The first year entailed a major engineering effort which produced plans and specifications for converting a Sedco 700 series mobile offshore drilling unit to an FPS which could maintain station in a severe typhoon environment, supply electrical power to artificially lift crude from the Liuhua 11-1 reservoir, and support the installation and ...

1987 - The Sedco 711 and Sedco 700 become the first semisubmersibles 1965 - in the world to utilize top drives. 1994 - The Sovereign Explorer becomes the first rig to drill year-round 1965 - in West of the Shetland Islands.

2021年7月12日 · Ocean Prospector，ODECO设计，第一种自航半潜钻井平台，12立柱，两浮筒；建造数量：11. 1973年，Sedco 700. Sedco 700，Earl & Wright设计，8立柱，两浮筒，具备自航能力；建造数量：15. 1973年，Western Pacesetter. Western Pacesetter，Friede & Goldman设计，6立柱，两浮筒，具备自航能力；建造数量：39. 1973年，Deap Sea Driller. Deap Sea Driller （Aker H-3） ，Aker Mek Verksted设计，8立柱，两浮筒；建造数量：29. // DG海洋工程 // 微 …

2015年2月16日 · This summary provides key details about the Earl & Wright Sedco 700 series drilling unit from the document: The drilling unit is 227 feet long, 197 feet wide, and 120 feet high. It was built in 1985 and can operate in up to 1,500 feet of water and drill to depths of 25,000 feet.

The Sedco 700-series semisubmersible will be selected from Transocean's fleet of Other Floaters. Revenues of approximately $385 million could be generated over the firm three-year contract duration, excluding revenues for mobilization, de-mobilization and client reimburseables.

早期常规船型钻井平台随着波浪起伏运动，稳定性和运动性能欠佳。 海上油气行业需要更稳定的钻井平台船型。 半潜式平台的浮力来自于压载的、水密的、位于水面以下的浮筒，而操作甲板位于平台顶部。 浮筒和甲板通过立柱实现连接和支撑。 当半潜式钻井平台移位时，浮筒排载，以便平台漂浮在海面上并进行移动作业。 1961年，壳牌石油公司成功地将一台现有的半潜钻井平台改造成第一艘专用半潜式钻井平台，并在墨西哥湾成功作业。 随后，工业界很快接受了半潜式平台 …