ASX-listed explorer 88 Energy has announced a maiden resource estimate of 1.03 billion barrels located on the central North Slope of Alaska. The Icewine East project is spread over an area of 185,320 net acres. The maiden resource estimate is based on well logs from the previously drilled exploration well Icewine 1, seismic data, data from other wells in the region, recent petrophysical analysis and geophysical mapping. 88 Energy holds a 75 per cent working interest in the project.