Consent to start up Troll phase 3

Equinor-Oyvind-Gravaas-Even-Kleppe-Troll3

Photo: Equinor/Øyvind Gravås and Even Kleppe.

02/07/2021 Licensees in Troll Nord in the North Sea have secured consent to start up facilities and modifications associated with the Troll phase 3 project.

The PDO for Troll phase 3 was approved in December 2018. The project is a further development of the Troll field and will produce the gas from Troll Vest.

The development solution chosen by the operator Equinor and its partners comprises two subsea templates with eight gas wells tied into the Troll A platform. The wellstream from these wells is routed to Troll A through a new 36-inch pipeline, for further compression and export via existing infrastructure.

Recoverable reserves from Troll phase 3, mainly gas, are estimated at about 2.2 billion barrels (350 million standard cubic metres) of oil equivalent.

Major supplier of gas to the continent

"Troll is a giant on the Norwegian shelf. The field supplies as much as 7 per cent of Europe’s daily demand for gas, and Troll phase 3 will help maintain a high level of production for a long time to come," says Wenche Tjelta Johansen, Leader of Licence management.

The licensees have invested just over 8 billion kroner in Troll phase 3, and the plan is for it to produce for at least 30 years. Troll phase 3 was originally scheduled to come on stream this spring, but start-up was postponed until the autumn due to the Covid-19 restrictions.

Troll was proven in 1979, and the original plan for development and operation (PDO) was approved in 1986. The plan was updated in 1990 in order to move the gas processing to the Kollsnes terminal. The field came on stream in 1995.

Developed in phases

Troll was developed in phases, with gas extraction from Troll Øst in phase 1 and oil from Troll Vest in phase 2. Troll phase 1 was developed with Troll A, which is a fixed foundation wellhead and compression installation with a concrete substructure. Troll A receives power from shore. Gas compression capacity was expanded on Troll A in 2004/2005 and again in 2015.

Troll phase 2 was developed with Troll B, which is a floating living quarters and production facility in concrete, and Troll C, which is a semi-submersible living quarters and production facility in steel.

The oil in Troll Vest is produced from multiple subsea templates tied into Troll B and Troll C via pipelines. Production from the Troll C installation started in 1999. Troll C is also used for production from Fram, Fram H-Nord and Byrding. Several amended development plans (PDOs) were approved in connection with installing multiple subsea templates on Troll Vest.

Illustration showing Troll phase 3 expansion

Illustration of Troll phase 3: Equinor.

 

Contact

Ola Anders Skauby

Director Communication and public affairs

Tel: +47 905 98 519

Updated: 02/07/2021

Latest news

Temporary appointment - Director general
04/07/2022 The Ministry of Petroleum and Energy has announced a temporary appointment, naming Torgeir Stordal (60) as Director General of the NPD from 30 June and until a new Director General of the NPD is hired.
Drilling permit for well 30/5-4 S
04/07/2022 The Norwegian Petroleum Directorate (NPD) has granted OMV (Norge) AS drilling permit for well 30/5-4 S, cf. Section 13 of the Resource Management Regulations.
Drilling permit for well 35/6-3 S
04/07/2022 The Norwegian Petroleum Directorate (NPD) has granted Neptune Energy Norge AS drilling permit for well 35/6-3 S, cf. Section 13 of the Resource Management Regulations.
Preparing Nova for start-up
30/06/2022 The authorities have granted consent to start production from the Nova field in the North Sea.
Drilling permit for well 25/7-10
28/06/2022 The Norwegian Petroleum Directorate (NPD) has granted ConocoPhillips Skandinavia AS drilling permit for well 25/7-10, cf. Section 13 of the Resource Management Regulations.
Drilling permit for well 6607/12-5
27/06/2022 The Norwegian Petroleum Directorate (NPD) has granted Equinor Energy AS drilling permit for well 6607/12-5, cf. Section 13 of the Resource Management Regulations.
Prestigious UN post for Harald Brekke
23/06/2022 Senior geologist Harald Brekke has been elected to the Commission on the Limits of the Continental Shelf (CLCS).
Production figures May 2022
21/06/2022 Preliminary production figures for May 2022 show an average daily production of 1 831 000 barrels of oil, NGL and condensate.
Dry well near the Kvitebjørn field in the North Sea – 34/9-1 S
21/06/2022 Equinor Energy AS, operator of production licence 1049, has concluded the drilling of wildcat well 34/9-1.
Ingrid Sølvberg resigns as Director General
17/06/2022 Sølvberg has today, Friday 17 June, resigned from her position as Director General for the Norwegian Petroleum Directorate.