Development

Tor is a field in the southern part of the Norwegian sector in the North Sea, 13 kilometres northeast of the Ekofisk field. The water depth is 70 metres. Tor was discovered in 1970, and the plan for development and operation (PDO) was approved in 1973. The field was developed with a combined wellhead and processing facility tied-back to the Ekofisk field, and started producing in 1978. Tor was shut down in 2015, and the facility will be removed by the end of 2022. In November 2019, a new PDO for the redevelopment of the field was approved. The plan includes two subsea templates with eight horizontal production wells, tied-back to the Ekofisk Centre.

Reservoir

The reservoir contains oil and gas in fractured chalk of Late Cretaceous age in the Tor Formation and of early Paleocene age in the Ekofisk Formation. There are significant remaining resources in both formations. The reservoir depth is 3,200 metres.

Recovery

The field is produced by natural pressure depletion.

Transport

The well stream is transported by pipeline to the processing facility at the Ekofisk Centre and further to Teesside in the UK and Emden in Germany.

Status

Production started again in December 2020.