The Rev Field is an offshore gas field located in the southern part of the Norwegian North Sea. The field is operated by Repsol Norge with 70% interest.
Petoro, a Norwegian government-owned energy company, holds the remaining 30% stake.
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Repsol became the majority stakeholder in the field, following its acquisition of Canadian energy company Talisman Energy in May 2015.
Rev field was discovered in February 2001. The plan for development and operation (PDO) for Rev field was approved in 2007, and the offshore field commenced production in January 2009.
Rev Field Location
The Rev Field is located in Production Licence 038C, Block 15/12, on the Norwegian Continental Shelf (NCS). Water depth ranges between 90m and 110m.
The field lies around 4km south of the Varg Field and approximately 225km southwest of Stavanger, Norway.
It is approximately 3km from the UK median line, and 221km from the coast of Aberdeenshire, Scotland.
Discovery and Reservoir Details
The Rev field was discovered by drilling exploration well 15/12-12.
The well was drilled in December 2000 and it reached a total depth of 3,085m in the Triassic Skagerrak Formation. It was abandoned in February 2001 as an oil and gas discovery.
It was followed by drilling additional wells to appraise the discovery.
From May 2003 to December 2006, four appraisal wells- 15/12-13 B, 15/12-16 S, 15/12-17 A, and 15/12-17 S were drilled by West Alpha and Maersk Giant. All encountered hydrocarbons.
The quality of the Rev reservoir, located at 3,000m depth, is divided into two segments. The field produces from Intra-Heather sandstone of the Late Jurassic Age.
Originally, the field had recoverable reserves of 3.6 million standard cubic metres of oil equivalent (Sm3) of oil equivalent. This includes 2.7 million Sm3 of natural gas.
Rev Field Development Details
Rev field consists of two areas- Rev West and Rev East. The field was developed with a subsea template consisting of three production wells and an umbilical cross over into the UKCS.
Two of the production wells are located in Rev West, while the other is in Rev East. The field uses pressure depletion to produce hydrocarbons.
The wells are connected to the Armada platform on the UK Continental Shelf (UKCS) via the umbilical cross over.
The Armada processing facilities include a gas compression train providing booster compression, a Try-Ethylene Glycol (TEG dehydration), and an export compression.
After processing, the production is transported to the Seal Sands on Teesside terminal in the UK via the UK’s Central Area Transmission System (CATS) for final processing.
The condensate is sold as a stabilised crude oil.
The liquid is transported through the Everest Liquid System (ELS) and the Forties Pipeline System (FPS) to the Kinneil processing plant at Grangemouth.
As the recoverable volumes dropped since PDO, Rev field has been producing for short periods since 2013.
Several measures were also taken to extend the life of the offshore field including exporting reinjected gas in the Varg reservoir to the UK via the existing Rev infrastructure.
Recent Developments
Repsol Norge sought approval for decommissioning of the UKCS components of the Norwegian Rev field as the export pipeline and umbilical cross over into the region.
The components which will be decommissioned include around 4.8km of 12inch gas condensate pipeline from the UK median line to the flange at the Rev Subsea Isolation Valve (SSIV) near Armada platform; and 4.9km of the Rev electrical and hydraulic control cable (umbilical) stretching from the UK median line to the junction box near Armada.
The decommissioning programme was approved by the UK Secretary of State in April 2018.
In 2019, Repsol received consent from the Norwegian regulators to extend the life of the Rev field until April 2021. The company secured another extension until December 2023 in 2020.
In April 2023, Norwegian Ocean Industry Authority again agreed to a life extension of the Rev field until December 2026.
Key Contracts
In September 2024, IKM Operations, an energy service providing company, was awarded a contract related to the Rev Field.
The contract scope includes the delivery of integrity management services such as engineering works, inspection of topsides, and subsea installations and pipelines for five years.
IKM subsidiaries IKM Ocean Design, IKM Inspection, and IKM Testing will support the IKM Operations.
The Environmental Impact Assessment (EIA) for the decommissioning programme was prepared by Repsol and Xodus, an Aberdeen-based energy consultancy firm.
During drilling and appraisal activity, facilities such as Rowan Stavanger, Maersk Giant, West Alpha were used. Semi-submersible drilling rig Scarabeo 6 from Italian oil services company Saipem was also used.
