Wisting Oil Field

The plan for development and operation (PDO) for the discovery is slated to be finalised at the end of 2022 and production is planned to commence in 2028. The Wisting field will have an expected field life of 30 years.

An impact assessment for the development and operation of Wisting was presented by Equinor in February 2022.

Location and site details

Discovered in 2013 by OMV, the Wisting Oil Field is located in the Hoop area in the Barents Sea within PL 537 and 537B. The region is around 310km north of Hammerfest.

The depth of water at the site ranges from 390m to 418m.

The field features an ultra-shallow reservoir with low temperature and pressure, and it is heavily segmented. It hosts oil in sandstone of Late Triassic age in the Fruholmen Formation and of Early Jurassic age in the Nordmela and The rock formations.

Wisting Oil Field details

The oil field was delineated with well 7324/7-3 S in 2016 and well 7324/8-3 in 2017 respectively.

Six wells have been drilled to date at Wisting where the sixth and the latest well (Wisting Central 3) was drilled in 2017.

The standalone field development will include a circular Floating Production and Storage Unit (FPSO) with power procured from the shore to minimise carbon dioxide emissions. The FPSO will also process and store the recovered oil before it is shipped.

The FPSO selected for the oil field project is based on a Sevan design. The top side of FPSO will weigh around 20,000 metric tonnes and will feature a large process module and a large utility module.

The floating unit will also include living quarters for up to 140 people, a hull and a helicopter deck to facilitate operations.

Electrification has been preferred for the project since there is not enough gas in the reservoir to power the field throughout its life while gas imports are costly and technically demanding.

The transmission lines that will power the FPSO will be connected to an onshore power station. The cables connecting the site and power station will be around 340km long.

The Wisting Oil Field will have a power demand of around 80MW in the operations phase.

The development and operation phases for the project are expected to deliver significant value in Northern Norway.

Equinor estimates that field development will involve more than NOK35bn worth of goods and service deliveries from Norway. The figure was calculated before all contracts are awarded.

A supply base and the helicopter base are expected to be established in Hammerfest to support operations at Wisting.

Equinor plans to divide the operating model between Hammerfest and Harstad. The control room and operational support tasks will be established in Hammerfest, while administrative operations and other technical functions will be conducted from Harstad.

Contractors involved

Aker Solutions secured the contract to provide Front-End Engineering and Design (FEED) services for the circular FPSO in November 2021. The award includes the option for engineering, procurement, construction, and installation (EPCI) of the FPSO, subject to the final investment decision.

Leirvik and Sevan SSP have been selected as sub-suppliers of engineering services for the living quarters and hull respectively.

Petro Arctic was contracted for supplier analyses and consultancy, while Bodo Business Park secured spinoff analysis and location study contracts.

Aker Solutions, TechnipFMC, OneSubsea Processing, IKM Ocean Design and Kongsberg Maritime are responsible for FEED studies of Subsea Production and Processing Equipment, Umbilical, Risers and Flowlines (SURF).

Subsea 7, Baker Hughes Energy and NOV are also associated with FEED studies related to the offshore project.