New development concept on Oseberg

15/06/2016 When Oseberg Vestflanken 2 starts producing in 2018, it will represent a new concept on the Norwegian shelf. Unmanned wellhead platforms may be relevant for future developments.

The Plan for Development and Operation (PDO) for Vestflanken 2, nine km from the Oseberg field centre in the northern part of the North Sea, was approved by the Ministry of Petroleum and Energy this Tuesday. Vestflanken 2 is the first of three planned phases for development of the remaining reserves in the Oseberg area. This project will help extend the life of the Oseberg field, which has been in production since 1988.

The PDO was submitted in December last year

The development solution chosen for Oseberg Vestflanken 2 is an unmanned wellhead facility resting on the seabed. This platform will have no process equipment, living quarters, drilling facilities or helicopter deck. The wells on the field will be drilled with a mobile drilling unit, while maintenance will be performed with a support vessel with adapted gangway drawing up alongside the platform.

This concept is new on the Norwegian shelf, but common on the Danish and Dutch shelves.

The operator Statoil and partners Petoro, Total and ConocoPhillips have estimated the development cost at NOK 8.2 billion (2015). This investment will enable the production of 17.6 million standard cubic metres of oil equivalents (around 110 million bbls o.e). Of the reserves, the oil makes up nearly 10 million cubic metres (62 million barrels), while the gas reserves amount to 7.8 billion Sm3. The reservoirs are located between 2400 and 3100 metres below the sea surface.

The wellhead facility has ten well slots. To increase the recovery of oil, two of the slots will be used to inject gas. In addition, two production wells will be drilled from an existing subsea template on the Vestflanken. Further injection will take place by bringing in gas through a new pipeline from the gas injection system which already exists in this area. The wells on Vestflanken 2 will be controlled from the Oseberg field centre, where the oil and gas will also be processed.

 

Relevant

 

Illustration: Statoil

Oseberg Vestflanken 2 will be developed with a simplified, unmanned wellhead facility with ten well slots. The licensees have booked a dedicated, simplified, jack-up drilling facility (Cat J rig) to drill the wells.
(Illustration: Statoil)

Updated: 15/06/2016

Latest news

Dry well near the Snorre field in the North Sea – 33/6-5 S
27/10/2021 Neptune Energy Norge AS, operator of production licence 882, has concluded the drilling of wildcat well 33/6-5 S.
Boreløyve for brønn 6407/9-13 i utvinningsløyve 1060
22/10/2021 The Norwegian Petroleum Directorate has issued a drilling permit to Equinor Energy AS for well 6407/9-13, cf. Section 13 of the Resource Management Regulations.
Dry well southeast of the Johan Sverdrup field in the North Sea – 17/8-1
22/10/2021 Lundin Energy Norway AS, operator of production licence 976, is in the process of concluding the drilling of wildcat well 17/8-1.
Drilling permit for well 36/1-4 S in production licence 885
21/10/2021 The Norwegian Petroleum Directorate has issued a drilling permit to Wellesley Petroleum AS for well 36/1-4 S, cf. Section 13 of the Resource Management Regulations.
Production figures September 2021
20/10/2021 Preliminary production figures for September 2021 show an average daily production of 2 022 000 barrels of oil, NGL and condensate,
Drilling permit for well 24/12-7 in production licence 1041
18/10/2021 The Norwegian Petroleum Directorate has issued a drilling permit to Aker BP ASA for well 24/12-7, cf. Section 13 of the Resource Management Regulations.
Minor oil and gas discovery near the 7122/6-1 (Tornerose) discovery in the Barents Sea – 7122/6-3 S
13/10/2021 Vår Energi AS, operator of production licence 901, has concluded the drilling of wildcat well 7122/6-3 S.
Dry well near the Solveig field in the North Sea – 16/4-12
08/10/2021 Lundin Energy Norway AS, operator of production licence 981, is in the process of concluding the drilling of wildcat well 16/4-12.
25 years’ experience with safe and secure CO2storage
05/10/2021 Carbon capture and storage (CCS) is a hot topic. Director General Ingrid Sølvberg recently took part in a panel discussion at the EU-Norway Energy Conference to spread the word about safe and secure storage of CO2 on the Norwegian shelf.
Minor oil discovery near the Ekofisk field in the North Sea – 2/5-15
28/09/2021 DNO Norge AS, operator of production licence 006 C, has concluded the drilling of wildcat well 2/5-15.