Seillean (OPV)
Encyclopedia
The FPSO Noble Seillean is a dynamically positioned
Dynamic positioning
Dynamic positioning is a computer controlled system to automatically maintain a vessel's position and heading by using its own propellers and thrusters...

 floating oil production, storage and offloading vessel
Floating Production Storage and Offloading
A floating production, storage and offloading unit is a floating vessel used by the offshore industry for the processing of hydrocarbons and for storage of oil. A FPSO vessel is designed to receive hydrocarbons produced from nearby platforms or subsea template, process them, and store oil until it...

. The name Seillean means "honeybee" in Gaelic.

History

The vessel was designated as a single well oil production ship (SWOPS) when constructed for BP
BP
BP p.l.c. is a global oil and gas company headquartered in London, United Kingdom. It is the third-largest energy company and fourth-largest company in the world measured by revenues and one of the six oil and gas "supermajors"...

 by Harland and Wolff
Harland and Wolff
Harland and Wolff Heavy Industries is a Northern Irish heavy industrial company, specialising in shipbuilding and offshore construction, located in Belfast, Northern Ireland....

 in 1990. The vessel was designed for the Cyrus oilfield on Block 16/28 in the UK sector of the North Sea
North Sea
In the southwest, beyond the Straits of Dover, the North Sea becomes the English Channel connecting to the Atlantic Ocean. In the east, it connects to the Baltic Sea via the Skagerrak and Kattegat, narrow straits that separate Denmark from Norway and Sweden respectively...

. Later she served on the Donan field. Seillean was sold by BP in 1993 to Reading & Bates. As Brazilian oil company Petrobras
Petrobras
Petróleo Brasileiro or Petrobras is a semi-public Brazilian multinational energy corporation headquartered in Rio de Janeiro, Brazil. It is the largest company in Latin America by market capitalization and revenue, and the largest company headquartered in the Southern Hemisphere by market...

 took the decision to develop the Roncador field
Roncador Oil Field
Roncador oil field is a large oil and gas field located in the Campos Basin, off the coast of Brazil, northeast from Rio de Janeiro. It covers an 111 km2 area and reaches depths between --History:...

, a four-year charter for Seillean was signed. In 1997-1998, Seillean was upgraded and arrived in Brazil in December 1998.

After acquisition of Reading & Bates by Transocean
Transocean
Transocean Ltd. is one of the world's largest offshore drilling contractors. The company rents floating mobile drill rigs, along with the equipment and personnel for operations, to oil and gas companies at an average daily rate of US$282,700...

, the vessel was acquired by Frontier Drilling in 2002. She was moved to Jubarte field. In February 2006, the vessel started to operate in the Petrobras-operated Golfinho Field in the Espirito Santo Basin off Brazil. In 2007, Seillean was moved to Pipa 2 oil field.

In June 2010, FPSO Seillean was contracted for the oil collection and processing at the Macondo Prospect
Macondo Prospect
The Macondo Prospect is an oil and gas prospect in the United States Exclusive Economic Zone of the Gulf of Mexico, off the coast of Louisiana...

 to deal with the Deepwater Horizon oil spill
Deepwater Horizon oil spill
The Deepwater Horizon oil spill is an oil spill in the Gulf of Mexico which flowed unabated for three months in 2010, and continues to leak fresh oil. It is the largest accidental marine oil spill in the history of the petroleum industry...

.

With the purchase of Frontier Drilling in 2010, FPSO Seillean was acquired by Noble Corporation
Noble Corporation
Noble Corporation is the modern name of Noble Drilling Corporation, by which it was known through the 1990s. The company was part of the S&P 500 stock market index until 3/26/2009, when the headquarters were transferred to Switzerland. Noble Corporation is a major contract driller of oil and...

. She was renamed Noble Seillean and her flag was changed from Panama to Liberia.

Description

FPSO Seallean is a dynamically positioned monohull floating production, storage and offloading vessel. She is classed by Lloyd's Register of Shipping as a 100A1 Oil Processing Tanker. Seallean is equipped with a flare, two cargo-handling cranes, a process plant inside the hull, a completion tower, and crew accommodation. The vessel has a displacement of 79,600 tonnes, the capacity to process up to 20000 oilbbl/d, and to store up to 306000 barrels (48,650,112.3 l) of oil. Ship's length is 249.7 metres (819.2 ft), breadth is 37 metres (121.4 ft), and depth is 20.5 metres (67.3 ft). She could operate at the water depth of 2000 metres (6,561.7 ft). The vessel is equipped with a helideck of 29 by.

Seillean is powered by a hybrid system of three Ruston
Ruston (engine builder)
Ruston & Hornsby, later known as Ruston, was an industrial equipment manufacturer in Lincoln, England, the company's history going back to 1840. The company is best known as a manufacturer of narrow and standard gauge diesel locomotives and also of steam shovels. Other products included cars, steam...

 gas turbine of 3.3 MW each, and three MAN diesel driven generators 4.2 MW each. These are operated such that when fuel gas is available from production operations, the gas turbine generators generate electrical power. When fuel gas is unavailable, the diesel driven generators provide the power, supplemented by the gas turbine driven generators operating on diesel oil.

Seillean has the following production facilities: processing plant. Maximum oil production is 25000 oilbbl/d and maximum produced water handling capability is 15000 oilbbl/d.
  • Storage and transport facilities for 310000 barrels (49,286,061.5 l) of oil.
  • A 6-5/8" riser which can connect to a subsea
    Subsea
    Subsea is a general term frequently used to refer to equipment, technology, and methods employed in marine biology, undersea geology, offshore oil and gas developments, underwater mining, and offshore wind power industries.- Oil and gas :...

     wellhead
    Wellhead
    A wellhead is a general term used to describe the component at the surface of an oil or gas well that provides the structural and pressure-containing interface for the drilling and production equipment....

    .


The crude oil is pumped from the process plant to six cargo oil tanks. During the 1998 upgrade, an offtake reel system was installed which allows to ship discharge of cargo to a dynamically positioned shuttle tanker.

External links


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