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. The production started in 2017. An amended PDO for an alternative oil export solution was approved in 2022. Since September 2023, Gina Krog is fully electrified by power from shore via the Johan Sverdrup field.

Reservoir

Gina Krog produces oil and gas from sandstone of Middle Jurassic age in the Hugin Formation. The field is structurally complex and segmented, and the reservoir depth is 3300-3900 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.

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.

Status

Oil production is declining, and to keep the production as high as possible, gas lift is used in some of the wells. In addition, two injection wells have been converted to producers. The strategy is to keep the gas production at plateau while at the same time maximising oil production. The second drilling campaign on Gina Krog started in June 2023 with two new wells, one with an exploration target. A PDO for the subsea tie-back of the discovery 15/5-2 Eirin was delivered in September 2023. The alternative oil export solution, which includes a pipeline from Gina Krog to the Sleipner A platform, is planned to be in operation in 2024.