Snorre Expansion Project now in production

December 14, 2020 09:00 CET
Photo of the Snorre A platform
The Snorre A platform in the North Sea. (Photo: Bo B Randulff - Even Kleppa - Woldcam / Equinor ASA)

At 12. December production commenced from the Snorre Expansion Project in the North Sea. This major Increased Oil Recovery project will add almost 200 million barrels of recoverable oil reserves and help extend the productive life of the Snorre field through 2040.

The project was originally scheduled to come on stream in the first quarter of 2021.

The Snorre field partnership consists of Equinor, Petoro, Vår Energi, Idemitsu and Wintershall Dea.

“I am proud that we have managed to achieve safe start-up of the Snorre Expansion Project ahead of schedule in such a challenging year as 2020. In addition, the project is set to be delivered more than NOK 1 billion below the cost estimate in the plan for development and operation (PDO),” says Geir Tungesvik, Equinor’s executive vice president for Technology, Projects and Drilling.

The Snorre field has been on stream since 1992. There are substantial resources left in the ground on the Snorre field. In December 2017, Equinor and the Snorre partners submitted a modified plan for development and operation (PDO) for the Snorre field to Norwegian authorities.  The recovery factor will now be increased from 46 to 51 percent, representing significant value for a field with 2 billion barrels of recoverable oil reserves.

Photos of Geir Tungesvik and Arne Sigve Nylund
Geir Tungesvik, executive vice president for Technology, Projects and Drilling, and Arne Sigve Nylund, executive vice president for Development and Production Norway.

The Hywind Tampen project, featuring 11 floating wind turbines that will supply the Snorre and Gullfaks fields with power, is expected to come on stream in the third quarter of 2022. Some 35 percent of the power requirement for the two fields is expected to be met using wind power.

According to the original PDO, the Snorre field was intended to be closed in 2011-2014, but continues to produce thanks to the authorities’ consent to extend the field’s life.

“Life extension represents good resource management. The new volumes brought to Snorre A help ensure activity offshore and onshore, creating substantial value for the Norwegian society,” says Arne Sigve Nylund, Equinor’s executive vice president for Development and Production Norway.

The investments in Snorre Expansion Project total NOK 19.5 billion (2020 value), and the development is profitable even at far lower oil prices than today. The project has had substantial spin-off effects for the supply industry in Norway, particularly in Eastern Norway and in Rogaland.

24 new wells will be drilled to recover the new volumes. The wells are divided into six subsea templates. Bundles connecting the new wells to the platform have also been installed, in addition to new risers. The project also includes a new module and modifications on Snorre A.

After three years of modifications being carried out on a platform on stream, the final preparations to receive oil from the new wells were performed during a major turnaround this autumn. The turnaround and work were performed without injuries or serious incidents.

Although the Snorre Expansion Project had progressed far when the Covid-19 pandemic began, the project has experienced challenges associated with deliveries, closed borders and plants, in addition to limited workforce on the platform due to infection control measures. 2020 has been a busy year, particularly when it comes to marine operations and modifications. Despite this, production began ahead of schedule.

“This is a result of excellent teamwork, both internally with own employees and safety delegates, and with our suppliers and partners. In a very unusual year many have gone to great lengths, been constructive and solution-oriented to ensure that the project was delivered,” says Tungesvik.

The Snorre field partnership consists of: Equinor Energy AS (operator) 33.27 %, Petoro AS 30%, Vår Energi AS 18.55%, Idemitsu Petroleum Norge AS 9.6 % and Wintershall Dea Norge AS 8.57%.

Related pages and downlods

Snorre Expansion templates on a barge
Snorre Expansion templates sail away from Tønsberg. (Photo: Roar Lindefjeld - Espen Rønnevik / Equinor ASA)

Facts

  • The field is in the Tampen area in the northern part of the North Sea. Water depth is between 300 and 380 metres.
  • Snorre is a giant in the North Sea and one of the fields with the largest remaining reserves among Equinor’s oil producing fields on the Norwegian continental shelf.
  • A total of 24 wells will be drilled in the Snorre Expansion project (SEP), 13 producers and 11 injectors for pressure support. The drilling operations will continue for two years.
  • The Snorre field is complicated and divided by several faults. A large number of wells are required in order to produce the considerable remaining resources. Including SEP some 100 wells will be tied in to Snorre A.
  • So far, the Snorre field has produced 1.4 billion barrels of oil. Total recoverable volumes in the field are estimated at 2 billion barrels.
  • The productive life of the Snorre field was originally expected to last until 2011 – 2014. Snorre is now expected to produce through 2040.

Main suppliers for Snorre Expansion Project:

Aibel: Modifications to Snorre A, including the construction of a new module
TechnipFMC: Subsea production systems
Subsea 7: The fabrication and installation of pipeline bundle system
Transocean: Drilling and well operations
Halliburton: Integrated well services
Deep Ocean: Marine installations.