Development

Gudrun is a field in the central part of the North Sea, 50 kilometres north of the Sleipner Øst field. The water depth is 110 metres. Gudrun was discovered in 1975, and the plan for development and operation (PDO) was approved in 2010. The field is developed with a steel jacket and a topside with process facility and living quarters. Gudrun is tied-back to the Sleipner A facility with two pipelines, one for oil and one for wet gas. A PDO exemption was granted for the discovery 15/3-9 in 2013. The production started in 2014.

Reservoir

Gudrun produces oil and gas from sandstone in the Upper Jurassic Draupne Formation and the Middle Jurassic Hugin Formation. The reservoir quality in the Draupe Formation, which constitutes the main recoverable resources, is in general good. The Hugin Formation has larger variation in reservoir quality. The reservoirs are at depths of 4000-4700 metres.

Recovery strategy

The field is mainly produced by pressure depletion. Part of the reservoir in the Draupne Formation is produced with water injection.

Transport

Unstable oil and rich gas are transported in separate pipelines to the Sleipner A facility for further processing. Dry gas is exported via Gassled (Area D) to the market, while oil is transported to the Kårstø terminal.

Status

The production is off plateau and on decline. No development wells have been drilled since the last drilling campaign in 2022. A new drilling campaign is currently being prepared and will benefit from 4D seismic data collected on the field in 2023. Gudrun has been supplied with power from shore through the area solution for the Utsira High since 2024. The Gudrun installation has flexibility for tie-in of discoveries in the area. An exploration well made a discovery to the northeast of Gudrun, 15/3-13 S (Brokk-Mju).