Gullfaks oil field

📅 آخر تحديث: ٤ أغسطس ٢٠٢٦
✍️ نُشر في: ٤ أغسطس ٢٠٢٦
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الموسوعة الحرة
Petroleum production of Norway by year and oil field

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]

In November 2022, the Hywind Tampen floating offshore wind farm started supplying power to the Gullfaks platforms.[3]

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 is 380 metres (1,250 ft),[4] making it taller than the Eiffel Tower. Gullfaks C holds the record [5] 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.[6] 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) southeast of Gullfaks C, has a subsea separation manifold installed in 2007 which is tied-back to the existing Gullfaks infrastructure.[7][2]

Gullfaks platform design data[8]
InstallationGullfaks AGullfaks BGullfaks C
TypeConcrete gravity platformConcrete gravity platformConcrete gravity platform
FunctionDrilling, production, storage, accommodationDrilling, production, accommodationDrilling, production, accommodation
LocationSW part of fieldNW part of field
Water depth, metres135142216
Fabrication substructureNorwegian Contractors StavangerNorwegian Contractors StavangerNorwegian Contractors Stavanger
Topsides designAker Engineering and Foster WheelerAker Engineering and Foster Wheeler
Substructure weight, tonnes340,000173,000370,000
Topside weight, tonnes40,00025,00049,000
Accommodation (crew)330160300
Legs434
Cells241924
Storage capacity, barrels180,000Nil
Well slots4242
Wells21 production, 17 injection20 production, 13 injection
Throughput oil, barrels per day (bpd)245,000150,000
Water injection, bpd4 x 95,00095,000
Platform installed19861987May 1989
Production start19871988January 1990
Oil production to2 x SPM buoys (8,400 m3/hour)Gullfaks A
Gas production toStatfjord CStatfjord C

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. The report also questioned why the Statoil’s probe that was supposed to assess which barriers functioned "and thereby helped to prevent or limit the hazard" did not seem to have been assessed.[9]

On 29, April 2016, a helicopter carrying oil workers crashed while flying from the Gullfaks oil field to Bergen. All 13 people on board were killed.[10]

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. 123Petterson, 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. 12"Statoil". Archived from the original on 2014-12-20. Retrieved 2013-11-27.
  3. ↑"Hywind Tampen starts powering Snorre". reNEWS - Renewable Energy News. 2023-05-16. Archived from the original on 2023-06-01. Retrieved 2024-12-21.
  4. ↑Structures
  5. ↑"Heaviest man-made object moved".
  6. ↑Lindberg, Björn (11 August 2022). "How large is a troll?". INDUSTRIMINNE.NO.
  7. ↑Amazing Structures, author Michael Pollard Page 34,35
  8. ↑Oilfield Publications Limited (1985). The North Sea Platform Guide. Ledbury UK: Oilfield Publications Limited. pp. 276–83.
  9. ↑"summary letter in English"(PDF). Archived from the original(PDF) on 2011-07-26. Retrieved 2011-11-14.
  10. ↑"Super Puma crash: Helicopter 'showed warning light'". BBC News. 2016-05-01. Retrieved 2024-08-11.