OSLO, Norway – Aker BP has proven oil during appraisal drilling on the Øst Frigg field in the Norwegian North Sea.
The Odfjell semisubmersible Deepsea Nordkapp drilled well 25/2-23 A (Øst Frigg Alfa) in license PL873, 45 km (28 mi) northeast of the Alvheim field and 220 km (137 mi) northwest of Stavanger.
Øst Frigg was discovered in 1973, the well proving gas and oil in reservoir rocks from the Eocene (Frigg formation).
However, although the Plan for Development and Operation (PDO) was approved in 1984 with the field producing gas from 1988 to 1997, the oil column at that time was considered too small to recover.
Aker BP has been investigating the remaining oil potential in the shut-down Øst Frigg field.
This latest well encountered a 3-m (9.8-ft) oil column in the upper part of the Frigg formation, in a 177-m (581-ft) sandstone layer, and a 2-m (6.6-ft) oil column lower down in the same reservoir.
The Norwegian Petroleum Directorate assesses resources in the range 0.1-1.1 MMcm of recoverable oil. Work continues to assess the field’s remaining oil potential.
Deepsea Nordkapp will next drill a pilot well on shallow gas in PL 028 B in the North Sea, again for Aker BP.