Snorre Oil Field

Operator: Equinor
Country: Norway
Location: Tampen area in the northern part of the North Sea
Production start: 1992
Partners: Statoil - 33.28%, Petoro - 30.0%, ExxonMobil - 17.45%, Idemitsu - 9.6%, RWE Dea - 8.57% and Core Energy 1.11%
Type: Oil
Estimated Reserves: Original
- 249.9 million Sm³ oil
- 6.6 billion Sm³ gas
- 4.7 million tonnes NGL
Production Volume: 85 000 barrels/day (2013)

The water depth in the area is 300 - 350 metres.
Snorre A in the south is a floating steel facility (TLP) for accommodation, drilling and processing. Snorre A also has a separate process module for production from the Vigdis Oil and Gas Field. A subsea template with ten well slots, Snorre UPA, is located centrally on the field and connected to Snorre A.
Snorre B is located in the northern part of the field, and is a semi-submersible integrated drilling, processing and accommodation facility. An amended PDO for Snorre, including a new processing module on Snorre A for processing oil from Vigdis, was approved in December 1994. The PDO for Snorre B was approved in June 1998. Snorre B came on stream in June 2001.
Snorre C is a TLP which will be added to the field
Oil and gas are separated in two stages at Snorre A before transport in separate pipelines to Statfjord A for final processing and export. The oil is loaded onto shuttle tankers at Statfjord and excess gas is sent through the Statpipe Gas Pipeline to Kårstø, or through Tampen Link to St Fergus. Processed oil from Snorre B is routed by pipeline to Statfjord B for storage and loading to shuttle tankers.
All gas from Snorre B is normally re-injected, but may also be sent to Snorre A for injection or export.
The field is produced with pressure support from water injection, gas injection and water alternating gas injection (WAG).
The Snorre Expansion Project (SEP) consists of six subsea templates, each with four wells

Dragados: Snorre B Semi-sub
Kvaerner Rosenberg: Snorre TLP
Kvaerner:
- TLP Well Template and Piles
- Drilling Derrick, Sub-structure and Skidbase
- Snorre B - Deck Sections
Leirvik
- Snorre A VKM & Installation New Office and Workshop module including Hook-Up
- Snorre A LQE & Installation 46 new cabins, CCR etc. in one module including Hook-Up
ABB: Snorre B - Engineering, procurement, as well as contracting and full installation, delivery of four templates with manifolds, wellhead, trees and control systems for 27 subsea wells as well as control umbilicals
Emtunga: A60 fire pump modules
Aibel: Engineering, procurement, fabrication and installation of major modification work on the Snorre platforms related to Snorre Export and Robustness
Aker Solutions: Deliver replacement and upgrading of the drilling equipment and systems on the Snorre A platform
FMC Technologies:
- 10 production risers and tieback connectors
- Replacement workover system

1979 - Snorre Oil Field discovered
1992 - First oil produced
1998 - The PDO for Snorre B was approved
2001 - Snorre B came on stream
2010 - Aibel awarded contract for platform modifications
2012 - Aker Solutions awarded contract for replacement and upgrading of the drilling equipment and systems on the Snorre A platform
2012 - Statoil announced it was to install seismic cables on the seabed to increase oil recovery
2013 - Statoil recommends a third platform to increase recovery
2014 - Temporary shut down on Snorre B due to erosion beneath the template
2018 - Approval for expansion project
2020 - Snorre expansion project starts production
2022 - Hywind Tampen wind farm begins supplying power to the platforms

The Snorre field consists of several large fault blocks. The reservoir contains Lower Jurassic and Triassic sandstones in the Statfjord and Lunde Formations.
The reservoir depth is 2 000 - 2 700 metres. The reservoir has a complex structure with many alluvial channels and internal flow barriers.

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