The size of the newly discovered gas reserves will be announced on Saturday, when the president will visit Fatih, the drilling vessel that made the discovery, Anadolu Agency quoted Erdogan as saying.
Turkey expects Fatih to continue discovering new natural gas deposits in the region, Erdogan added.
In August, Erdogan said that the Fatih drillship discovered in the Black Sea Turkey's biggest-ever natural gas field holding estimated reserves of 320 billion cubic metres. The discovery was made near the Tuna-1 well, where the Fatih launched drilling on July 20.