Norpipe is the undersea oil and natural gas pipelines system in the North Sea. It supplies oil from the Norwegian Ekofisk and associated fields in the North Sea to the United Kingdom and natural gas to Germany.
|Norpipe oil pipeline|
|Country||Norway, United Kingdom|
|From||Ekofisk oil field|
|Passes through||North Sea|
|Partners||ConocoPhillips, Total S.A., Equinor, Eni, SDFI|
|Length||354 km (220 mi)|
|Diameter||34 in (864 mm)|
|Norpipe natural gas pipeline|
|From||Ekofisk oil field|
|Passes through||North Sea|
|Partners||Equinor, Petoro, ConocoPhillips, Eni, ExxonMobil, Norsea Gas, Royal Dutch Shell, Total, DONG Energy|
|Technical service provider||ConocoPhillips|
|Length||440 km (270 mi)|
|Maximum discharge||16 billion cubic meters per year|
|Diameter||36 in (914 mm)|
The Norpipe oil pipeline starts at the Ekofisk 2/4-J facility. In addition to Ekofisk (Cod, Ekofisk, West Ekofisk, Tor, Albuskjell, Eldfisk, Edda, and Embla fields) the pipeline carries oil from Valhall, Hod, Gyda, Ula, Tambar, and Oselvar fields in Norwegian zone, and from several UK's oil fields, such as Fulmar and Judy, see table. A tie-in point for UK fields is located about 50 kilometres (31 mi) from Ekofisk. It has a landfall at Teesside Refinery in England.
The length of pipeline is 354 kilometres (220 mi) and it has diameter of 34 inches (860 mm). The pipeline is owned by Norpipe Oil AS, a consortium which includes ConocoPhillips Skandinavia AS (35.05%), TotalFinaElf Exploration Norge AS (34.93%), Statoil (18.5%), Eni Norge AS (6.52%), and SDFI (5%). It is operated by ConocoPhillips Skandinavia AS. The pipeline was commissioned in 1975. The Petroleum Safety Authority Norway has granted consent to use the pipeline until 2028. The Norpipe oil pipeline originally had two intermediate booster pump installations in the UK sector designated 37/4A and 36/22A, these were seldom used and were subsequently bypassed. The booster platforms were removed in 2009/10 as part of the greater Ekofisk decommissioning.
Booster pumping stationsEdit
|Designation||Norpipe 37/4A||Norpipe 36/22A|
|Distance from Ekofisk 2/4 J||123 km||235 km|
|Distance from Teesside||231 km||119 km|
|Water depth||85 m||81 m|
|Fabricated||UIE Cherbourg and St Wandrille|
|Total weight||9,750 tonnes|
|Operational||14 October 1975||1975|
|Drive||3 × GE (MS-3002J) 2-Stage axial gas turbines 11,800 / 14,400 hp||3 × GE (MS-3002J) 2-Stage axial gas turbines 11,800 / 14,400 hp|
|Fuel||Diesel or crude oil||Diesel or crude oil|
|Pump||3 × Bingham 1-stage centrifugal pumps||3 × Bingham 1-stage centrifugal pumps|
|Generators||3 × Bergen 640kVA diesel sets||3 × Bergen 640kVA diesel sets|
|Accommodation||2 storey, 24 beds 2 × double, 5 × four bed cabins||3 storey, 31 beds 1 × single, 9 × double, 3 × four bed|
|Helideck||Super Puma||Super Pumaa|
|Utilities||Telemetry, lube oil, chemicals, instrument and plant air, steam, potable water, cranes and lifting equipment||2 × B-E MK 60 Cranes|
UK fields and NorpipeEdit
|Field||Installation||Production to||Length||Diameter, inches||Year commissioned|
|Ekofisk||Platform 2/4 J||Teesside terminal||354 km||34||1975|
|Judy||Platform||Norpipe UK Tee via Northern Wye and Southern Wye||24||1997|
|Joanne||Subsea||Judy||5.5 km||2 x 12-inch||2002|
|Stella||Semi-submersible FPF-1||Southern Wye / Tanker||44 km||10||2016|
|Harrier||Subsea||Stella FPF-1||7 km||2018|
|Fulmar||Platform||Southern Wye||15.5 km||24||1997 Fulmar had formerly used offshore tanker loading|
|Auk North||Subsea||Fulmar||10.7 km||8||2011|
Natural gas pipelineEdit
The 440-kilometre (270 mi) long Norpipe natural gas pipeline runs from Ekofisk to a receiving terminal at Emden in Germany. The diameter of pipeline is 36 inches (910 mm) and it has capacity of 16 billion cubic metres (570 billion cubic feet) of natural gas per year. The natural gas pipeline was commissioned in 1977 and will be in use until 2028. The start-up investment was 26.4 billion Norwegian krone. The pipeline is owned by Gassled and operated by Gassco. The technical service provider is ConocoPhillips.
On 30 September 1995, a German cargo ship Reint collided with the Norpipe H7-platform in the German continental shelf. Only minimal damages to the platform, and no injuries to people were caused. The H7 platform has been off-the-service since 1999, and in 2007 a bypass pipe laid around the platform.
- "ConocoPhillips Gets Go Ahead to Use Norpipe Oil Pipeline Until 2028". Rigzone. 22 July 2008. Retrieved 10 November 2009.
- "Pipeline Facts" (PDF). Statoil. Retrieved 9 October 2010.
- "Norpipe Oil Pipeline". Subsea Oil & Gas Directory. Retrieved 10 November 2009.
- Heerema. "Ekofisk". Heerema. Retrieved 19 September 2020.
- "Norpipe 36/22 A". ekofisk. Retrieved 3 October 2020.
- "Norpipe 37/4 A". ekofisk. Retrieved 3 October 2020.
- "Judy Joanne". chrysaor. Retrieved 2 October 2020.
- "Fulmar" (PDF). repsol. Retrieved 2 October 2020.
"Natural gas in the Nordic countries" (PDF). Nordic Energy Perspectives. March 2009: 31. Archived from the original (PDF) on 27 July 2011. Retrieved 10 November 2009. Cite journal requires
- "Gassco gets consent to use B-11 facility, Norpipe until 2028". Scandinavian Oil-Gas Magazine. 20 January 2009. ISSN 1500-709X. Retrieved 10 November 2009.
- Vinnem, Jan Erik (2007). Offshore risk assessment: principles, modelling and applications of QRA studies. Springer. ISBN 978-1-84628-716-9. Retrieved 10 November 2009.
- "Gassco plugs in Norpipe bypass". Upstream Online. NHST Media Group. 25 June 2007. Retrieved 10 November 2009.