The explorer also saw a drop in production from 35,700 barrels of oil equivalent per day to 32,700 boepd.
Operating cash flow of $975.6 million at the end of the year was slightly higher at the end of 2013 than in the previous year.
With oil discoveries in PL359 Luno II and Gohta during the year, both offshore Norway, president Ashely Heppenstall said Norway was progressing well.
“As