Norwegian North Sea
The main Gullfaks field lies in block 34/10 in the northern part of the Norwegian North Sea. It has been developed with three large concrete production platforms.
What is the Gullfaks C installation?
Gullfaks C was installed in May 1989 in waters that are 216 meters deep, and it started to produce on January 1, 1990. The design lifetime was 30 years. Block 34/10 was called the “Golden Block” back in 1978 when it was awarded to Statoil, Norsk Hydro and Saga Petroleum, with Statoil as operator.
How heavy is the Gullfaks c installation?
The Gullfaks C platform installed in May 1989 is the largest and heaviest offshore concrete structure ever built. Designed for 220 m water depth it has a displacement of more than 1.4 million tonnes and represents a total investment of $ 2 billions.
Where is Troll A platform?
Troll A is a gas production platform and the pinnacle of the Norwegian condeep concept: moveable deepwater concrete structures. It is located in the Norwegian Troll gas field in the North Sea.
Where are Norway’s oil fields?
Since production started in 1971, oil and gas have been produced from a total of 115 fields on the Norwegian shelf. At the end of 2020, 90 fields were in production: 67 in the North Sea, 21 in the Norwegian Sea and 2 in the Barents Sea. Three new fields started producing in 2020: Skogul, Ærfugl and Dvalin.
How did they move Troll A?
T0 move the structure, engineers built Troll A’s hollow legs, set them on the ocean’s surface, then filled them with water to sink them. After draining the legs, Troll A’s builders then dragged the platform and legs out to sea using ten tugboats. It took the tugboats a full week to drag the structure the 120+ miles.
What is the tallest oil rig?
List of tallest oil platforms
| Name | Pinnacle height (metres / feet) | Jacket Weight |
|---|---|---|
| Petronius Compliant Tower | 640 | 43,000 |
| Baldpate Compliant Tower | 581.5 | 57,269 |
| Bullwinkle Platform | 529 | 54,427 or 49,375 |
| Benguela-Belize Lobito-Tomboco Platform | 512 | 43,500 |
How are Condeeps made?
Condeep is an abbreviation for concrete deep water structure. A Condeep usually consists of a base of concrete oil storage tanks from which one, three or four concrete shafts rise. The Condeep base always rests on the sea floor, and the shafts rise to about 30 meters above the sea level.
Who owns the Troll A platform?
Equinor
Operator Equinor, formerly known as Statoil, currently holds 30.58% ownership of the field, while the remaining stake is held by Petoro (56%), Norske Shell (8.10%), Total E&P Norge (3.69%) and ConocoPhillips Skandinavia (1.62%).
Who owns Norway’s oil?
As of 2017, the Government of Norway is the largest shareholder with 67% of the shares, while the rest is public stock. The ownership interest is managed by the Norwegian Ministry of Petroleum and Energy.
What is the tallest structure ever moved?
Located about 80 km off the west coast of Norway is Troll A, a colossal natural gas platform and the tallest structure ever moved by mankind. It’s construction is regarded as one of the largest and most complex engineering projects in history.
Where is the Gullfaks field?
The main Gullfaks field lies in block 34/10 in the northern part of the Norwegian North Sea. It has been developed with three large concrete production platforms. The Gullfaks A platform began production on 22 December 1986, with Gullfaks B following on 29 February 1988 and the C platform on 4 November 1989.
How is oil produced at the Gullfaks oil field?
The Gullfaks A platform began production on 22 December 1986, with Gullfaks B following on 29 February 1988 and the C platform on 4 November 1989. Produced oil is loaded directly into shuttle tankers on the field, while associated gas is piped to the Kårstø gas treatment plant north of Stavanger and then on to continental Europe.
What is the recovery factor on Gullfaks?
The field set a production record of 605,965 barrels for a single day on 7 October 1994. The satellite fields – Gullfaks South, Rimfaks, Skinfaks and Gullveig – have been developed with subsea wells remotely controlled from the Gullfaks A and C platforms. The recovery factor on Gullfaks is 59 per cent, but the goal is to increase into 62 per cent.
What is exploregullfaks Sør?
Gullfaks Sør is a satellite to the main Gullfaks field, developed with subsea production installations. The first development phase was approved in March 1996, and came on stream in October 1998.
