Norsk Hydro declined to comment on the size of the oil deposit.
"Further analyses and delineation drilling must be carried out to obtain secure data regarding the expected volume of additional reserves and recovery rate," Norsk Hydro said.
Oil and gas fields are not always exploitable because of technical or cost reasons.
The company refused to comment on reports in the daily Verdens Gang that the reserves would be twice the size of those of the neighbouring Brage field, which has registered a peak production of 110,000 barrels per day.
The discovery is the fourth oil and gas find on the Norwegian continental shelf in recent months.




