Hardman Resources and Tullow Oil reported positive test drilling results from their 50-50 owned Waraga-1 Oil Discovery in Uganda.
They said initial results show a flow rate of about 1,500 barrels a day of 33.8 degree API oil.
Hardman chief executive Simon Potter said the programme in Uganda "has delivered three discoveries in the first three wells and now the first oil flow . . . in East Africa, south of the Sudan."
