Reservoir

Gina Krog produces oil and gas from sandstone of Middle Jurassic age in the Hugin Formation. The field is complex and segmented, and the reservoirs lie depths of 3,300-3,900 metres. Reservoir thickness and quality are varying.

Recovery strategy

The field has earlier been produced by gas injection in most reservoir segments. Since 2021, all segments are produced by pressure depletion.

Status

In 2022, the production has been stable and according to plan. A new drilling campaign using a jack-up rig is planned for 2023. Randgrid FSO will be replaced by an oil export pipeline to Sleipner A with anticipated start-up in 2024. The Eirin discovery is being considered for tie-in to Gina Krog.

Transport

Stabilised oil and condensate are transported to a floating storage and offloading vessel (Randgrid FSO), and then offloaded to shuttle tankers for further transport. Rich gas is exported to the Sleipner A facility for further processing. Sales gas is exported from Sleipner A via Gassled (Area D) to the market, while unstable condensate is exported to the Kårstø terminal.

Development

Gina Krog is a field on the Utsira High in the central part of the North Sea, just north of the Sleipner Vest field. The water depth is 120 metres. Gina Krog was discovered in 1978, and the plan for development and operation (PDO) was approved in 2013. The field is developed with a fixed platform with living quarters and processing facilities. Production started in 2017. From 2023, Gina Krog will be supplied with power from shore, as part of the electrification of the Utsira High area.