Development

Sleipner Vest is a field in the central part of the North Sea, 12 km west of Sleipner Øst. The water depth is 110 metres. Sleipner Vest was discovered in 1974, and the plan for development and operation (PDO) was approved in 1992. The field is developed with two platforms: the normally unmanned wellhead platform Sleipner B, which is remotely operated from the Sleipner A facility on the Sleipner Øst field, and the gas treatment platform Sleipner T, connected by a bridge to Sleipner A. The production started in 1996.

Reservoir

Sleipner Vest produces gas and condensate mainly from Middle Jurassic sandstone in the Hugin Formation. Minor hydrocarbon volumes occur locally in the Sleipner Formation. The reservoir is at a depth of 3450 metres and is highly segmented. Faults in the field are generally not sealing and communication between the sand deposits is good.

Recovery strategy

The field is produced by pressure depletion. CO2 is removed from the gas and injected for storage in the Utsira Formation.

Transport

The well stream is sent to the Sleipner A facility for processing. Sales gas is exported from Sleipner A via Gassled (Area D) to the market. Unstable condensate is transported in a pipeline to the Kårstø terminal.

Status

Sleipner Vest is in the middle of the tail production phase. Drilling targets are being evaluated for a drilling campaign in 2024/2025. To increase the production from the field, the inlet pressure at Sleipner T has been reduced and is planned to be reduced further in the coming years.