The Heidrun oil field is an oil and gas field

Oil and gas field

An oil and gas field is a field, or vast reservoir, that contains both oil and natural gas.-See also:* Oil field* Natural gas field* Oil reservoir* List of oil fields* List of natural gas fields...

 discovered in 1985 in the Norwegian

Norway

Norway , officially the Kingdom of Norway, is a Nordic unitary constitutional monarchy whose territory comprises the western portion of the Scandinavian Peninsula, Jan Mayen, and the Arctic archipelago of Svalbard and Bouvet Island. Norway has a total area of and a population of about 4.9 million...

 sector of the Norwegian Sea

Norwegian Sea

The Norwegian Sea is a marginal sea in the North Atlantic Ocean, northwest of Norway. It is located between the North Sea and the Greenland Sea and adjoins the North Atlantic Ocean to the west and the Barents Sea to the northeast. In the southwest, it is separated from the Atlantic Ocean by a...

, named after the goat Heiðrún

Heiðrún

Heiðrún is a goat in Norse mythology, which consumes the foliage of the tree Læraðr and produces mead for the einherjar. She is described in the Poetic Edda and Prose Edda.-Prose Edda:-Poetic Edda:...

 from Norse mythology

Norse mythology

Norse mythology, a subset of Germanic mythology, is the overall term for the myths, legends and beliefs about supernatural beings of Norse pagans. It flourished prior to the Christianization of Scandinavia, during the Early Middle Ages, and passed into Nordic folklore, with some aspects surviving...

.

The field lies 175 kilometres (108.7 mi) West of Kristiansund

Kristiansund

Kristiansund is a city and municipality on the western coast of Norway, in the Nordmøre district of Møre og Romsdal county. It was officially awarded township status in 1742, and it is still the major town for the region. The administrative center of the municipality is the city of Kristiansund...

. It has produced oil

Petroleum

Petroleum or crude oil is a naturally occurring, flammable liquid consisting of a complex mixture of hydrocarbons of various molecular weights and other liquid organic compounds, that are found in geologic formations beneath the Earth's surface. Petroleum is recovered mostly through oil drilling...

 and gas

Natural gas

Natural gas is a naturally occurring gas mixture consisting primarily of methane, typically with 0–20% higher hydrocarbons . It is found associated with other hydrocarbon fuel, in coal beds, as methane clathrates, and is an important fuel source and a major feedstock for fertilizers.Most natural...

 since October 1995, and had a production of 165000 barrels (26,232,903.7 l) of oil and 650 thousand cubic meter of natural gas per day in 2004. Its production in 2006 was estimated at 3 million cubic meter of natural gas and 140000 barrels (22,258,221.3 l) of oil a day. The crude oil is characterized as being naphthenic with 25.0 API (0.9043 g/cm3), 0.52% sulfur and a high 2.90 TAN (Total Acid Number

Total Acid Number

The Total Acid Number is the amount of potassium hydroxide in milligrams that is needed to neutralize the acids in one gram of oil. It is an important quality measurement of crude oil. The TAN value indicates to the crude oil refinery the potential of corrosion problems. It is usually the...

).

The Heidrun field is located on Haltenbanken in the Norwegian Sea. The sea depth in the area is 350 metres (1,148.3 ft). The field has been developed with a floating concrete tension leg platform

Tension-leg platform

A Tension-leg platform or Extended Tension Leg Platform 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 meters...

, installed over a subsea template with 56 well slots. The northern part of the field is developed with subsea facilities.

External links

• Heidrun Facts and Interactive map

• The NPD's fact-pages. Field HEIDRUN. Heidrun field facts
• Heidrun field development Information on Heidrun platform