It said the reserves of the Thar Jath oil fields, in Block 5A in the southern Unity state, were estimated at a minimum of 250 million barrels.
White Nile Petroleum is expected to dig 45 wells in the coming year, it added. Sudans main oil fields are in the south, and disputes over oil fuelled a civil war there for more than two decades, claiming 2 million lives mostly from hunger and disease.
A peace deal signed in January ended Africas longest civil war and has revived interest in Sudans potential oil reserves. The deal states both sides will respect any oil contract signed before the date of the peace deal Jan. 9, 2005 and any deals after a new government of unity is formed will be decided by a joint petroleum commission from the national energy and mining ministry.
But an official from the former southern rebel group the Sudan Peoples Liberation Army (SPLA) has said it has signed a deal with a London-listed company called White Nile, giving it part of block B in SPLA-controlled areas.