In mid-March 2018 the bid round for the Omurtag exploration block was still not launched. This offer has been repeatedly postponed since 2013.  The Omurtag block encompasses 2,834 sq km and is situated in eastern Bulgaria, between the 1-16 Gradishte and Provadia permits. Potential finds are expected in Valanginian limestones, which are producing in Bulgaria's oldest field Tyulenovo-Shabla, situated onshore on the Black Sea coast. Particularly attractive objectives seem to be Eocene limestones and sandstones with other possible targets in Middle Jurassic and Triassic sandstones and Middle Triassic limestones/dolomites.   Â   Â 
In mid-March 2018 the bid round for the Omurtag exploration block was still not launched. This offer has been repeatedly postponed since 2013. 