Gullfaks_C

Gullfaks oil field

Gullfaks oil field

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Gullfaks is an oil and gas field in the Norwegian sector of the North Sea operated by Equinor. 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]

Quick Facts Country, Location ...
Petroleum production of Norway by year and oil field

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 and the height of the total structure measured from the sea floor 380 metres (1,250 ft),[3] making it taller than the Eiffel Tower. Gullfaks C holds the record [4] of the heaviest object that has ever been moved to another position, relative to the surface of the Earth with a total displacement between 1.4 and 1.5 million tons.[5] The platform 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.[6][2]

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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.[8]

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]
    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. [2]
    "Statoil". Archived from the original on 2014-12-20. Retrieved 2013-11-27.
  3. [3]
    Structures
  4. [4]
    "Heaviest man-made object moved".
  5. [5]
    Lindberg, Björn (11 August 2022). "How large is a troll?". INDUSTRIMINNE.NO.
  6. [6]
    Amazing Structures, author Michael Pollard Page 34,35
  7. [7]
    Oilfield Publications Limited (1985). The North Sea Platform Guide. Ledbury UK: Oilfield Publications Limited. pp. 276–83.
  8. [8]
    "summary letter in English" (PDF). Archived from the original (PDF) on 2011-07-26. Retrieved 2011-11-14.
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