Lundin Petroleum said its unit, Lundin Norway, completed the drilling and testing of the re-entry of appraisal well Alta-3, on the eastern flank of the Alta discovery in PL609.
The Alta discovery is estimated to contain contingent resources of between 125 and 400 million barrels of oil equivalents, Lundin said in a statement on Friday.
The original Alta-3 well, drilled in 2015, encountered a gross hydrocarbon column of approximately 120 meters. The objective of the Alta-3 re-entry was to deepen the well to further assess the quality of the PermoCarboniferous carbonate reservoir as well as to conduct injection and production tests.
A production test in the gas zone in the Lower Triassic reservoir section produced a maximum of 21 million cubic feet of gas per day.
The re-entry well, which was the first of three wells in 2016 drilling campaign on the Loppa High, was drilled to a total depth of 2,575 meters.
Once the Leiv Eiriksson rig has plugged and abandoned the Alta-3 well it will move some 60 km to the north on PL609 to re-enter the suspended well 7220/6-2 to complete the drilling of the Neiden prospect which is estimated to contain gross unrisked prospective resources of 204 MMboe.
Lundin Norway is the operator of PL609 and holds a 40 percent working interest in the license, while partners Idemitsu and RWE Dea hold 30 percent each.