Gullfaks oil field

Gullfaks

Gullfaks A being completed near Haugesund

Location of Gullfaks

Country Norway
Location North Sea
Block 34/10
Offshore/onshore offshore
Coordinates 61°12′53.80″N 2°16′25.93″E / 61.2149444°N 2.2738694°E / 61.2149444; 2.2738694Coordinates: 61°12′53.80″N 2°16′25.93″E / 61.2149444°N 2.2738694°E / 61.2149444; 2.2738694
Operator Statoil
Partners Statoil, Petoro
Field history
Discovery 1978
Start of production 1986
Peak of production 180,000 barrels per day (29,000 m3/d)
Peak year 2001
Production
Current production of oil 39,000 barrels per day (~1.9×10^6 t/a)
Year of current production of oil 2013
Estimated oil in place 73 million barrels (~1.0×10^7 t)

Gullfaks is an oil and gas field in the Norwegian sector of the North Sea operated by Statoil. It was discovered in 1978, in block 34/10, at a water depth of 130-230 meters.[1] The initial recoverable reserve is 2.1 billion barrels (330×10^6 m3), and the remaining recoverable reserve in 2004 is 234 million barrels (37.2×10^6 m3). This oil field reached peak production in 2001 at 180,000 barrels per day (29,000 m3/d). It has satellite fields Gullfaks South, Rimfaks, Skinfaks and Gullveig.[2]

Platforms

The project consists of three production platforms Gullfaks A (1986), Gullfaks B (1988), and Gullfaks C (1989).[1] Gullfaks C sits 217 metres (712 ft) below the waterline. The height of the total structure measured from the sea floor is 380 metres (1,250 ft),[3] making it taller than the Eiffel Tower. Gullfaks C produces 250,000 barrels per day (40,000 m3/d) of oil. The Tordis field, which is located 11 kilometres (6.8 mi) south east of Gullfaks C, has a subsea separation manifold installed in 2007 which is tied-back to the existing Gullfaks infrastructure.[4][2]

Incidents

Between November 2009 and May 2010 a well being drilled from Gullfaks C experienced multiple well control incidents which were investigated by Petroleum Safety Authority Norway and summarized in a report released on 19 November 2010. The report stated that only chance prevented the final and most serious incident on 19 May 2010 from becoming a full-scale disaster.[5]

Geology

The reservoir consists of delta sandstones from the Middle Jurassic Brent Group, shallow-marine Lower Jurassic Cook Formation sandstones, and the fluvial-channel and delta-plain Lower Jurassic Statfjord Formation.[1]

See also

References

  1. 1 2 3 Petterson, O., Storli, A., Ljosland, E., Nygaard, O., Massie, I., and Carlsen, H., The Gullfaks Field, 1992, in Giant Oil and Gas Fields of the Decade, 1978-1988, AAPG Memoir 54, Halbouty, M.T., editor, Tulsa: American Association of Petroleum Geologists, ISBN 0891813330, pp. 429-446
  2. 1 2 Statoil
  3. ↑ Structures
  4. ↑ Amazing Structures, author Michael Pollard Page 34,35
  5. ↑ summary letter in English
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