Turkey is poised to announce the discovery of gas either in the Black Sea or off Cyprus where its drillships are exploring.
The country is buzzing with excitement after President Recep Tayyip Erdogan said late Wednesday he will announce "very good" news on Friday, which would usher in "a new era" for the country.
"If I announce it now, the excitement would disappear," he said.
A Haberturk daily report said Turkey's Fatih-1 drillship had discovered gas in two separate locations, near the Danube river and in the Kiyikoy region along Thrace's shores of the Black Sea.
Lack of resources
Turkey, which has been exploring for energy resources in the Black Sea for several years, does not have any significant carbon energy resources, and is a major importer of gas from Russia and Iran.
Turkey's state-owned TPAO spudded the Tuna-1 exploration well in the Black Sea a month ago, hoping to find gas in an area where ExxonMobil has made a discovery off Romania.
The TPAO-owned drillship Fatih began drilling 100 nautical miles north of Turkey's Black Sea coastal province of Zonguldak.
The Tuna prospect, part of a major fan system, lies about 60 kilometres south of major Domino gas find off Romania. Water depth at the Tuna location in Block 3921 is about 2200 metres, with the reservoir targets likely to be Upper Miocene and Pliocene.
TPAO acquired both 2D and 3D seismic data in the area before the spud.
Drilling off Cyprus
Turkey's other drillship, Yavuz, has been drilling ahead off Cyprus.
Any hydrocarbon discovery off Cyprus is bound to lead to a further escalation of regional tensions which have seen Turkey locked in a bitter territorial dispute with the European Union in the Eastern Mediterranean.
The Greek and Turkish navies have both been deployed to an area between the islands of Crete and Cyprus after Turkey recently sent a seismic vessel to waters Greece contends are located above its continental shelf.
Ankara has been at odds with European Union countries — mainly Cyprus and Greece — over ownership of natural resources in the eastern part of the Mediterranean Sea.
Cyprus's internationally recognised government discovered offshore gas in 2011.
Turkey maintains that some blocks licensed to international oil companies by Nicosia are either on the Turkish continental shelf or in areas where the breakaway Turkish Republic of Northern Cyprus has rights over energy assets.