Frigg discovery on UKCS

A new well was drilled in March/April, which confirmed that the petroleum deposit extended into the UKCS. Esso drilled in block 30/10 (where the Odin discovery was made in 1974) north of Petronord’s discovery, and found that a small part of the reservoir also extended in that direction.

Additional seismic surveying was initiated. The structure proved to be smaller and more complex than the initial investigations had revealed. It nevertheless represented a major gas discovery, and the decision was taken to bring the field on stream.

Frigg ranked then as the largest and northernmost gas reservoir in the North Sea. Recovery of the oil was considered, but the layer containing these resources was regarded at the time as too thin to be produced.