Ursa Tension Leg Platform | |
---|---|
Record height | |
Preceded by | Petronius Compliant Tower (640 m (2,100 ft)) |
Surpassed by | Perdido Regional Host (2,438 m (7,999 ft)) |
General information | |
Status | Complete |
Type | Oil platform |
Location | 130 miles (210 km) southeast of New Orleans |
Coordinates | 28°09′14″N89°06′13″W / 28.154027°N 89.103553°W Coordinates: 28°09′14″N89°06′13″W / 28.154027°N 89.103553°W |
Opening | 2009 |
Cost | $1.45 billion |
Height | |
Antenna spire | 1,306 m (4,285 ft) |
Design and construction | |
Developer | Shell Oil Company 45.39%, British Petroleum 22.69%, ExxonMobil 15.96% and ConocoPhillips 15.96% |
The Ursa tension leg platform is an oil platform with a tension leg structure located at 28°09′14″N89°06′13″W / 28.154027°N 89.103553°W about 130 miles (210 km) southeast of New Orleans in the Gulf of Mexico. It is operated by Shell Oil Company. It has a total height from the seabed to its top of 4,285 feet (1,306 m). [1]
A tension-leg platform (TLP) or extended tension leg platform (ETLP) is a vertically moored floating structure normally used for the offshore production of oil or gas, and is particularly suited for water depths greater than 300 metres and less than 1500 metres. Use of tension-leg platforms has also been proposed for wind turbines.
New Orleans is a consolidated city-parish located along the Mississippi River in the southeastern region of the U.S. state of Louisiana. With an estimated population of 393,292 in 2017, it is the most populous city in Louisiana. A major port, New Orleans is considered an economic and commercial hub for the broader Gulf Coast region of the United States.
The Gulf of Mexico is an ocean basin and a marginal sea of the Atlantic Ocean, largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of the United States, on the southwest and south by Mexico, and on the southeast by Cuba. The U.S. states of Texas, Louisiana, Mississippi, Alabama, and Florida border the Gulf on the north, which are often referred to as the "Third Coast", in comparison with the U.S. Atlantic and Pacific coasts.
Shell Oil is the operator of the project with 45.39%. BP Exploration & Production Inc has 22.69% while Exxon Mobil Corp and ConocoPhillips each have 15.96%.
Shell Oil Company is the United States-based wholly owned subsidiary of Royal Dutch Shell, transnational corporation "oil major" of Anglo-Dutch origins, which is amongst the largest oil companies in the world. Approximately 22,000 Shell employees are based in the U.S. The U.S. headquarters are in Houston, Texas. Shell Oil Company, including its consolidated companies and its share in equity companies, is one of America's largest oil and natural gas producers, natural gas marketers, gasoline marketers and petrochemical manufacturers.
BP plc is a British multinational oil and gas company headquartered in London, United Kingdom. It is one of the world's seven oil and gas "supermajors", whose performance in 2012 made it the world's sixth-largest oil and gas company, the sixth-largest energy company by market capitalization and the company with the world's 12th-largest revenue (turnover). It is a vertically integrated company operating in all areas of the oil and gas industry, including exploration and production, refining, distribution and marketing, petrochemicals, power generation and trading. It also has renewable energy interests in biofuels and wind power.
ConocoPhillips is an American multinational energy corporation with its headquarters located in the Energy Corridor district of Houston, Texas in the United States. It is the world's largest independent pure-play exploration and production company and the company ranked No. 95 in the 2018 Fortune 500 list of the largest United States corporations by total revenue. ConocoPhillips was created through the merger of American oil companies Conoco Inc. and Phillips Petroleum Co. on August 30, 2002. In 2012, ConocoPhillips spun off its downstream assets as a new, separate company, Phillips 66.
The discovery well was drilled in 1991, with Sonat's Discoverer Seven Seas drillship, on Mississippi Canyon block 854. Construction was finished in 1998.
Sonat, Inc., headquartered in Birmingham, Alabama, was a large Fortune 500 American energy holding company. The company was founded in 1928 and was listed on the New York Stock Exchange under the ticker symbol "SNT". Sonat was primarily involved in transmission and marketing natural gas and oil and gas exploration and production. The company was also involved in contract offshore drilling until 1995 when the offshore business became Transocean. In 1999 Sonat merged with El Paso Corporation. The company was headquartered in the AmSouth-Sonat Tower in downtown Birmingham.
A drillship is a merchant vessel designed for use in exploratory offshore drilling of new oil and gas wells or for scientific drilling purposes. In most recent years the vessels are used in deepwater and ultra-deepwater applications, equipped with the latest and most advanced dynamic positioning systems.
The Ursa Tension Leg Platform was replaced as the tallest man-made structure in the world by the Magnolia Tension-leg Platform.
The Troll A platform is a condeep offshore natural gas platform in the Troll gas field off the west coast of Norway. It is the tallest and heaviest structure that has ever been moved to another position, relative to the surface of the Earth, and is among the largest and most complex engineering projects in history. The platform was a televised sensation when it was towed into the North Sea in 1996, where it is now operated by Statoil.
An oil platform, offshore platform, or offshore drilling rig is a large structure with facilities for well drilling to explore, extract, store, and process petroleum and natural gas which lies in rock formations beneath the seabed. In many cases, the platform contains facilities to house the workforce as well.
Offshore construction is the installation of structures and facilities in a marine environment, usually for the production and transmission of electricity, oil, gas and other resources. It is also called maritime engineering.
Petronius is a deepwater compliant tower oil platform operated by Chevron in the Gulf of Mexico, 210 km southeast of New Orleans, United States.
A floating production storage and offloading (FPSO) unit is a floating vessel used by the offshore oil and gas industry for the production and processing of hydrocarbons, and for the storage of oil. A FPSO vessel is designed to receive hydrocarbons produced by itself or from nearby platforms or subsea template, process them, and store oil until it can be offloaded onto a tanker or, less frequently, transported through a pipeline. FPSOs are preferred in frontier offshore regions as they are easy to install, and do not require a local pipeline infrastructure to export oil. FPSOs can be a conversion of an oil tanker or can be a vessel built specially for the application. A vessel used only to store oil is referred to as a floating storage and offloading (FSO) vessel.
Troll is a natural gas and oil field in the Norwegian sector of the North Sea, one of the biggest in the North Sea, holding 40% of Norway’s gas – it also possesses significant quantities of oil, in thin zones under the gas cap, to the west of the field. The field as a whole consists of the main Troll East and Troll West structures in blocks 31/2, 31/3, 31/5 and 31/6, about 65 kilometres (40 mi) west of Kollsnes, near Bergen. Most of the gas lies in Troll East.
Condeep refers to a make of gravity-based structure for oil platforms developed by engineer Olav Mo in Hoeyer-Ellefsen and fabricated by Norwegian Contractors in Stavanger, Norway. A Condeep usually consists of a base of concrete oil storage tanks from which one, three or four concrete shafts rise. The Condeep base always rests on the sea floor, and the shafts rise to about 30 meters above the sea level. The platform deck itself is not a part of the construction.
Mars is a permanent offshore drilling and production tension-leg oil platform (TLP) operating in Mississippi Canyon blocks 762, 763, 806, 807, 850 and 851 in the Gulf of Mexico and was approved by the MMS in December 1992 with production beginning on July 8, 1996. The leases were acquired by Shell in 1985 and 1988. The platform is a joint venture between Shell Oil Company and BP, with Shell owning the majority share and operating the facility.
Magnolia is an offshore oil drilling and production Extended Tension Leg Platform in the Gulf of Mexico. It was the world's deepest ETLP, reaching 1,432 m (4,698 ft), beating the Marco Polo TLP by 120 m (390 ft). In March 2018, Big Foot took over this claim in 1,580 m (5,180 ft).
Very large floating structures (VLFSs) or very large floating platforms (VLFPs) are manmade islands, which may be constructed to create floating airports, bridges, breakwaters, piers and docks, storage facilities, wind and solar power plants, for military purposes, to create industrial space, emergency bases, entertainment facilities, recreation parks, mobile offshore structures and even for habitation. Currently, several different concepts have been proposed for building floating cities or huge living complexes. Some units have been constructed and are presently in operation.
Sakhalin Energy Investment Company Ltd. is a consortium for developing the Sakhalin-2 oil and gas project with corporate head office in Yuzhno-Sakhalinsk. The chief executive officer is Roman Dashkov.
A spar is a type of floating oil platform typically used in very deep waters, and is named for logs used as buoys in shipping that are moored in place vertically. Spar production platforms have been developed as an alternative to conventional platforms. The deep draft design of spars makes them less affected by wind, wave and currents and allows for both dry tree and subsea production. Spars are most prevalent in the US Gulf of Mexico; however, there are also spars located offshore Malaysia and Norway.
Deepwater drilling, or Deep well drilling, is the process of creating holes by drilling rig for oil mining in deep sea. There are approximately 3400 deepwater wells in the Gulf of Mexico with depths greater than 150 meters.
A floating wind turbine is an offshore wind turbine mounted on a floating structure that allows the turbine to generate electricity in water depths where fixed-foundation turbines are not feasible. Floating wind farms have the potential to significantly increase the sea area available for offshore wind farms, especially in countries with limited shallow waters, such as Japan. Locating wind farms farther offshore can also reduce visual pollution, provide better accommodation for fishing and shipping lanes, and reach stronger and more consistent winds.
Offshore concrete structures have been in use successfully for about 30 years. They serve the same purpose as their steel counterparts in the oil and gas production and storage. The first concrete oil platform has been installed in the North Sea in the Ekofisk field in 1973 by Phillips Petroleum. Since then 47 major concrete offshore structures have been built, whereby 21 of the 47 concrete substructures have been designed by Dr. techn. Olav Olsen.
Suction caissons are a new form of fixed platform anchor that have a number of advantages over conventional offshore foundations, mainly being quicker to install than deep foundation piles and being easier to remove during decommissioning. Suction caissons are now used extensively worldwide for anchoring large offshore installations, like oil platforms, offshore drillings and accommodation platforms to the seafloor at great depths. In recent years, suction caissons have also seen usage for offshore wind turbines in shallower waters.
Mr. Louie is a former self-elevating drilling barge converted into an oil platform. It was the first self-elevating drilling barge classed by the American Bureau of Shipping. As an oil platform, it operates at the Saltpond Oil Field, offshore Ghana.
Olympus is a tension leg platform oil rig, planned as a further development of the Mars field.
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