Development

Heimdal is a field in the central part of the North Sea. The water depth is 120 metres. Heimdal was discovered in 1972, and the initial plan for development and operation (PDO) was approved in 1981. The field was developed with an integrated drilling, production and accommodation facility with a steel jacket. Production started in 1985. When the Heimdal riser gas facility (Gas Centre) came into operation, Heimdal also became a hub for dry gas transport from Oseberg, in addition to processing production from fields such as Atla, Skirne, Vale, Valemon and Huldra.

Reservoir

Heimdal produced gas and some condensate from sandstone of Paleocene age in the Heimdal Formation. The reservoir lies in a massive turbidite system at a depth of 2,100 metres and has good quality.

Recovery strategy

The field was produced by pressure depletion.

Transport

Gas from Heimdal was transported in Statpipe via the Draupner and Ekofisk fields to continental Europe. When the Heimdal Gas Centre was established, a new gas pipeline was connected to the existing gas pipeline from the Frigg field to the Shell-Esso Gas and Liquid (SEGAL) terminal at St Fergus in the UK. A gas pipeline was laid from Heimdal to the Grane field for gas injection at Grane. Condensate was transported by pipeline to the Brae field in the UK sector and further to Cruden Bay in the UK. In connection with the phaseout of operations at Heimdal, a subsea solution for dry gas transport will be established which involves connection of the pipeline from Oseberg to Heimdal (Oseberg Gas Transport) with the three pipelines from Heimdal to Draupner, St Fergus and Grane, respectively.

Status

The production from Heimdal ceased in 2020. Heimdal was used as a gas processing centre for tied-in fields until June 2023. A decommissioning plan for Heimdal was submitted in 2020, and according to the formal removal resolution, decommissioning must be completed by the end of 2028.