Oseberg Oil Field

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Summary Information

  • Operator: Statoil
  • Country: Norway
  • Location: 130 kilometres north-west of Bergen
  • Production start: 1988
  • Partners: Statoil 49.30%, Petoro 33.60%, Total E&P Norge 10%, ExxonMobil E&P Norway 4.7%, ConocoPhillips Skandinavia 2.4%
  • Type: Oil & Gas
  • Estimated Reserves: Original - Remaining as of 31.12.2011
* 381.0 million Sm³ oil - 22.4 million Sm³ oil
* 105.4 billion Sm³ gas - 75.1 billion Sm³ gas
* 12.0 million tonnes NGL - 4.4 million tonnes NGL
  • Production Volume:

+++ Description

  • The Oseberg Offshore Field Centre includes three platforms, Oseberg A, B and D, connected to one another with bridges, in the southern part of the Oseberg field, and the Oseberg C platform, which lies 14 kilometres north of the field centre.
  • Oseberg A is a concrete base platform with process equipment and living quarters, while Oseberg B sits atop a steel jacket and has drilling, production and injection equipment.
  • Oseberg D is a steel platform with gas processing and export equipment. It was connected to the Field Centre with a bridge in 1999.
  • Oseberg C is an integrated drilling, accommodation and production platform with a steel jacket.
  • Gas export started from the Oseberg Field Centre on October 1, 2000. This represented the beginning of a new era for the Oseberg field.
  • The **Oseberg Sør field** consists of several structures south of the main Oseberg petroleum field and was developed with an integrated drilling, accomodation and production platform on a steel jacket at a sea depth of 100 meters.
  • **Oseberg Øst** is the smallest of the platforms in the Oseberg area. It is situated 25 kilometres northeast of the Oseberg field centre. Field development includes an integrated drilling, accommodation and production platform with equipment for first-phase processing.

+++ Contractors

  • **Kvaerner:**
* Oseberg II - Deck & Conductors
* Oseberg A - Flare boom & Bridge
* Oseberg B - Drilling Jacket and Piles
* Oseberg Øst - Jacket and Piles
* Oseberg Sør - Jacket and Piles
* **Halliburton:** Drilling services
  • **Aker Solutions:** Engineering, procurement, construction and installation (EPCI) contract for upgrading the drilling facilities on the Oseberg B platform
  • **FMC Technologies:** Supply includes five subsea trees, five wellheads, two manifolds, control systems and other associated equipment for the Oseberg Delta 2 Project
  • **Heerema Marine Contractors:** Oseberg B Platform installation
  • **Emtunga:**
* Oseberg East - Firewater generator modules
* Oseberg C - Subsea module & Office modules
  • **Saipem:** Oseberg Sor Platform installation & Oseberg Gas Line - T & I
  • **Aibel:**
* EPCI (Engineering, Procurement, Construction and Installation) to replace the existing Heat Recovery Steam Generation (HRSG) system on the Oseberg D platform
* Project management, engineering, procurement, fabrication and installation work to upgrade the mud system on the Oseberg C platform
* FEED study for drilling upgrades on Oseberg C platform

+++ History

  • 1988 - First oil production commenced
  • 1991 - Troll Oseberg gas injection project (TOGI) came on stream and was utilised to inject gas from Troll in order to maintain pressure on the Oseberg field and ensure optimal recovery
  • 2000 - Gas export started from the Oseberg Field Centre
  • 2000 - Oseberg Sør starts production
  • 2007 - Halliburton awarded drilling contract
  • 2009 - Aker Solutions won an engineering, procurement, construction and installation (EPCI) contract to upgrade Oseberg B platform
  • 2012 - The sub-surface team on the Oseberg field was awarded the Norwegian Petroleum Directorate's prize for improved oil recovery (IOR) for its work in increasing recovery by means of gas injection.
  • 2012 - Total acquires Exxon's stake
  • 2014 - Statoil announces new project for Oseberg Øst

+++ Geology

  • Oseberg is an oil field with a gas cap
  • The field consists of several Middle Jurassic sandstone reservoirs of the Brent Group, and is divided into several structures. The main reservoirs are in the Oseberg and Tarbert Formations, but production also takes place from the Etive and Ness Formations. The reservoirs lie at a depth of 2 300 - 2 700 metres and generally have good reservoir characteristics. In addition, there are resources in the Statfjord Formation in several of the satellite structures west of the main reservoir

+++ Links

  1. Statoil, The Oseberg area
  2. Oseburg, NPD
  3. Saipem Fixed Offshore Production Facilities Project References
  4. Leirvik Living quarters and extensions References
  5. FoundOcean Europe Subsea References
  6. Saipem Europe Pipeline References
  7. Kvaerner Platform References
  8. Kvaerner Topsides References
  9. Emtunga Europe Offshore Platform References
  10. Oseberg Sør officially opens
  11. Halliburton’s Assisted Geosteering Technology Aids Optimization Of Well Placement For Norsk Hydro In The North Sea
  12. Aker Solutions awarded drilling upgrade contract on the Oseberg B platform
  13. StatoilHydro awards 58 MUSD Oseberg EPCI contract to Aibel
  14. StatoilHydro contract to upgrade the mud system on Oseberg C goes to Aibel AS
  15. Aibel AS is awarded the StatoilHydro FEED contract for drilling upgrades on Oseberg C
  16. Statoil awarded IOR prize
  17. Norway: Total exchanges assets with ExxonMobil in the North Sea
  18. FMC Technologies Receives $152 Million Subsea Equipment Order for Statoil's Oseberg Delta 2 Project
  19. Oseberg – 25 years young and still going strong
  20. More oil from Oseberg Øst with new drilling campaign
  21. Unmanned wellhead platform chosen concept for Oseberg Future development
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