Grane oil field
| Grane | |
|---|---|
  | |
| Country | Norway |
| Offshore/onshore | Offshore |
| Coordinates |
59°13′12″N 2°29′24″E / 59.22°N 2.49°ECoordinates: 59°13′12″N 2°29′24″E / 59.22°N 2.49°E{{#coordinates:59.22|N|2.49|E|type:landmark|||| |primary |name= }} |
| Operator(s) | Statoil |
| Partners |
Statoil (38%) Petoro (30%) ExxonMobil (25.60%) ConocoPhillips (6.40%) |
| Field history | |
| Discovery | 1991 |
| Start of production | 2003 |
| Peak of production | 10 March 2006 |
| Abandonment | 2028 |
| Production | |
| Current production of oil (barrels per day) | 34,000 m3/d ({{#invoke:Math|precision_format| 0.213853566195 | 1--1 }} Mbbl/d) |
| Producing formations | Heimdal, Lista |
Grane (Norwegian: Granefeltet) is an offshore oil field in the North Sea located 185 km ({{#invoke:Math|precision_format| 114.953670564 | 1-2 }} mi) west of the city of Haugesund on the western coast of Norway.[1] It is Norway's first heavy crude oil production field and Statoil's largest heavy oil field. The oil from the field, located in Block 25/11 is transported to Sture terminal via Grane oil pipeline.[2] The injection gas is imported to Grane oil field from the Heimdal, located just north the field.[3][4]
Contents |
Ownership
The Grane field is operated by Statoil. Statoil holds 38%, Petoro – 30%, ExxonMobil – 25.60%, ConocoPhillips – 6.40%.[2][5]
Technical features
The field lies in 128 metres ({{#invoke:Math|precision_format| 419.947506562 | 1-2 }} ft) of water at total depth of 1,700 metres ({{#invoke:Math|precision_format| 5,577.42782152 | 1-3 }} ft). The reservoir is nearly 27 square kilometres ({{#invoke:Math|precision_format| 10.4247582806 | 1-1 }} sq mi) and has an average pay thickness of 50 metres ({{#invoke:Math|precision_format| 164.041994751 | 1-2 }} ft) with an average porosity of 33% and permeability of 5–10 Darcies.[4] The reservoir consists of sandstones of Heimdal formation of Paleocene age, Lista formation and has high viscosity.[6]
Development history
Statoil and partners started development of the field in 1991.[2] The Grane field started producing in September 2003. 31 production wells were put into operation.[7]
Production
In Grane oil field, Norsk Hydro used the technology applied its Troll and Oseberg fields to maximize production in Grane. An estimated 700 million barrels ({{#invoke:Math|precision_format| (700)*158,987.294928/1,000,000 | 1-2 }}×106 m3) is expected to be produced by the field with 214 thousand barrels per day ({{#invoke:Math|precision_format| (214)*(5.520392185/3,000)/(5/432) | 1-1 }}×103 m3/d). With the first horizontal well drilled, Hydro already reached a peak production by 10 March 2006 setting a record at 243 thousand barrels per day ({{#invoke:Math|precision_format| (243)*(5.520392185/3,000)/(5/432) | 1-1 }}×103 m3/d) which exceeded the initially established field plan by about 30 thousand barrels ({{#invoke:Math|precision_format| (30)*158.987294928/1,000 | 1-0 }}×103 m3). From then on, the field supplied the market an average 220 thousand barrels per day ({{#invoke:Math|precision_format| (220)*(5.520392185/3,000)/(5/432) | 1-1 }}×103 m3/d).[7] The company expects 55% recovery from the field. This makes Grane third of the size of Oseberg and twice the size of Brage. There is no gas cap in Grane field.[4]
See also
- Sture terminal
- Heimdal gas field
- Oseberg Transport System
- Oseberg oil field
- North Sea oil
- Economy of Norway
References
- ↑ "List of Subsea Oil Gas Projects Offshore Europe(North)". Subsea.org. http://www.subsea.org/projects/allbyregion.asp. Retrieved 24 April 2011.
- ↑ 2.0 2.1 2.2 "Subsea Oil & Gas Directory". Subsea.org. http://www.subsea.org/projects/listdetails.asp?ProjectID=169. Retrieved 24 April 2011.
- ↑ "Statoil.Operations North Sea". Statoil.com. http://www.statoil.com/AnnualReport2008/en/CountrySpotlight/Norway/Pages/3-1-7-1_OperationsNorthSea.aspx. Retrieved 24 April 2011.
- ↑ 4.0 4.1 4.2 {{#invoke:Citation/CS1|citation |CitationClass=journal }}
- ↑ "ConocoPhillips data". Conocophillips.com. http://www.conocophillips.com/EN/about/worldwide_ops/country/europe/Pages/norway.aspx. Retrieved 24 April 2011.
- ↑ "OLJEDIREKTORATET Norwegian Petroleum Directorate. Grane". Npd.no. http://www.npd.no/engelsk/cwi/pbl/en/index.htm. Retrieved 24 April 2011.
- ↑ 7.0 7.1 "Grane oil field success at OTC". Hydro News. 3 May 2006. http://www.hydro.com/en/Press-room/News/Archive/2006/May/16979/. Retrieved 2009-12-7.
External links
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