The company estimates that the well could contain oil equivalents ranging between 125 to 400 million barrels.
The original Alta-3 well had a gross hydrocarbon column of about 120 meters, which was drilled back in 2015. The present objective of the re-entry was the deepen the well further and assess the Permo-Carboniferous carbonate reservoir and to conduct injection and production tests.
Three tests were conducted at the site to investigate to production and injection characteristics of the oil reservoir.
Two injection tests in the carbonate reservoir below the oil-water contact injected 5000 and 18200 barrels of seawater per day. This, the company says, proved that the reservoir had good injectivity in the Falk and Orn formations.
Production test in the gas zone in the Lower Triassic reservoir produced about 21 million cubic feet of gas per day.
Lundin also says that the pressure data from wells 7220/11-3, -3A and -3AR show good communication with two wells drilled previously in the Alta discovery.
The re-entry well, the first in 2016 drilling campaign on the Loppa High had gone to depths of 2575 metres and 2389 metres TVD below mean sea level, in rocks of Carboniferous age. Here the depth of the water was about 400 metres.
Lundin Petroleum CEO and president Alex Schneiter said: “We are very pleased with the latest results which indicate excellent reservoir characteristics at the re-entry well and away from the well bore.
“Further appraisal over the Alta discovery will be required during 2017 to fully delineate this large structure.”
At the PL609, Lundin Petroleum is the operator and holds about 40% working interest in the license. Other partners include Idemitsu Petroleum Norge and RWE Dea Norge with 30% respectively.
