Statfjord oil field

Statfjord is an oil field in the North Sea. The field was discovered in 1974 is 85% in Norway and 15% in the British sector of the sea, but is operated by a joint operating under Norwegian law. The field was the largest oil field in the North Sea and at times the most important oil field. Originally, the field should go off the grid for a yield of 48 % of the oil in place in mid -1990, now 63 % are considered economically exploitable and it is to be operated until 2020.

Oil and gas are in Erdtiefen 2500-3000 meters. They originated about 160 million years ago in the Jurassic and are in sandstone formations where oil and gas are located in the pores between the sand grains.

Exploitation

At peak times, promoted the crew of the drilling platforms Statfjord A, B and C above 700,000 barrels / day, the record is 850 204 barrels on 16 January 1987. Together with the later to -down satellite platforms Snorre A, Snorre B, Statfjord East, Statfjord North and Sygna 1995 reached an annual average of 819 091 barrels / day the field. By the 25th anniversary in 2004 Statfjord promoted four billion barrels of oil worth NOK 1.045 trillion and 70 billion cubic meters of natural gas.

The oil is loaded onto tankers and oil rigs from the driven to the refineries. The gas from the Norwegian part of the field is transported by pipeline Statpipe on the Norwegian mainland to Kårstų in Stavanger, the gas from the British part goes over the Brent field to Scotland. Statfjord was the first oil field to which the Norwegian state oil company Statoil then a 50 - % share received on the Norwegian stocks, a practice that is then maintained for all subsequent Norway discovered oil fields. The other 50 % was mobile. Since 1987, Statoil operates the field alone. 2012, oil production was 260 275 m³.

History

Norway announced the discovery of Statfjord on 26 February 1974. The drilling began after Shell and Esso had discovered in 1972, the Brent oil field in the British sector, and the Norwegian government hoped it would spread up in the Norwegian sector. They were in fact successful, but had their own new oil field discovered. 1977 took Statfjord A for work.

The three rigs are Condeep constructions. Each weighs about 250,000 tons, followed by still 40,000 tons of process and residences are located. Statfjord A was at its formation in May 1977 as the largest drilling platform in the world. The exploitation began with problems. Statfjord A was far more expensive than planned, the completion also took a year longer than planned. In 1978 she was also still plagued by several accidents: 5 workers died in a fire in February, another 16 crashed with a helicopter that was to take the crew of mountains to the rig.

In 1979 took over the island to the regular production. In 1981, he Statfjord B, which started production in 1982 and 1984/1985 Statfjord C. Within a year, the cost for each of the rigs had paid for itself. Currently 620 workers work in shifts on the oil rigs. It was the first oil field where oil and female workers were employed.

Others

It was in the 1970s, two oil crises: one in 1973/74 and 1979 /80. The one about led to a quadrupling of prices, the other to a further tripling. Overall, the price of oil verzwölffachte So. The price of gas - traditionally linked to the oil price - followed; price of coal and the price of other energy sectors rose. See also energy crisis, stagflation.